which of the following events does not occur in spermatogenesis ​

Answers

Answer 1

Answer:

The mitochondria and Golgi apparatus are packaged into the head of the sperm.

Explanation:

Spermatogenesis is the production of male germ cells. Sufficient stimulation with sex hormones, especially testosterone, and a lower temperature, which is achieved by placing the testicles in the scrotum, are required for the correct course of spermatogenesis. Sperm production has three phases: reproductive, growth and maturation. At the beginning of sperm development are spermatogonia, which are male primordial cells. They have a spherical shape and are located at the edges of the seminal canals. Spermatogonia is mitotically divided. On the one hand, in order to preserve their numbers, and on the other hand, their division produces primary spermatocytes, which lie above the layer of spermatogonia. Primary spermatocytes are diploid, but after the first meiotic division, haploid secondary spermatocytes are formed from them. They still have double chromatids, so a second meiotic division soon occurs, the product of which is spermatids. Spermatids are already fully haploid and do not divide further. Spermatids then undergo a process of spermiogenesis, in which the nucleus condenses, forming a flagellum and losing most of the cytoplasm and some organelles. Immature sperm travel through the seed-forming canals to the epididymis, where they are definitively matured. This whole process takes about 72 days.


Related Questions

explain the following type of respiration with diagram in toad:
1..Buccal respiration
2..Cutaneous respiration
3.. Pulmonary respiration​

Answers

Answer:

1.Buccal pumping is "breathing with one's cheeks": a method of ventilation used in respiration in which the animal moves the floor of its mouth in a rhythmic manner that is externally apparent.

2.Cutaneous respiration, or cutaneous gas exchange, is a form of respiration in which gas exchange occurs across the skin or outer integument of an organism rather than gills or lungs.

3.Pulmonary ventilation is commonly referred to as breathing. It is the process of air flowing into the lungs during inspiration (inhalation) and out of the lungs during expiration (exhalation.

Yan Lang po Sana makatulung

what is diffussion ?
Defines osmosis?
what is hypotonic solution?​

Answers

Answer:

Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration. The concept of diffusion is widely used in many fields, including physics, chemistry, biology, sociology, economics, and finance.

Dictionary

Definitions from Oxford Languages

Search for a word

osmosis

/ɒzˈməʊsɪs/

Learn to pronounce

noun

1.

BIOLOGY•CHEMISTRY

a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

2.

the process of gradual or unconscious assimilation of ideas, knowledge, etc.

A hypotonic solution has a lower concentration of solutes than another solution. In biology, a solution outside of a cell is called hypotonic if it has a lower concentration of solutes relative to the cytosol. Due to osmotic pressure, water diffuses into the cell, and the cell often appears turgid, or bloated.

What tonicity term applies to the solution surrounding this cell?

Answers

Hypotonic. Since the black molecules can cross the cell membrane and water molecules are able to cross, the solution surrounding the cell has a lower solute concentration compared to the inside, causing water to move into the cell.

To determine the tonicity of the solution surrounding the cell in the given image, we need to consider the movement of water molecules across the cell membrane.

Based on the image, the black molecules can cross the cell membrane, while water molecules are also able to cross. Tonicity refers to the concentration of solutes outside the cell compared to inside the cell.

In this case, if the solution surrounding the cell has a lower concentration of solutes compared to the inside of the cell, water will move into the cell to equalize the concentrations. This would cause the cell to swell or potentially burst.

Therefore, the appropriate tonicity term for this situation is "Hypotonic." A hypotonic solution has a lower concentration of solutes compared to the inside of the cell, resulting in water moving into the cell.

Hence, the correct answer is "Hypotonic."

For more such question on Hypotonic

https://brainly.com/question/19464686

#SPJ8

1.What is the different between pulmonary circulation and systematic circulation
2. What is the different between aerobic andanaerobic respiration?
3. What is the important of ATP?
4. Write the group blood lack of atigen and antibody respectively?
5. Why the left ventricles thicker than right ventricles?
6. What is the different between disinfectants and antiseptics?
7. Write the life cycle of tape worm?
8. What are the main differences between cholera and typhoid?
9. Write the reason for need classification.
10. Write the genus name and species name of Homosapiens respectively ​

Answers

1. We can see here that the difference between pulmonary circulation and systematic circulation:

Pulmonary circulation is the circulation of blood from the heart to the lungs and back to the heart. While systemic circulation is the circulation of blood from the heart to the rest of the body and back to the heart.

What is aerobic and anaerobic respiration?

2. Aerobic respiration is a type of respiration that requires oxygen. While anaerobic respiration is a type of respiration that does not require oxygen.

3. The importance of ATP is that it is used to power all of the body's cells, including muscle cells, brain cells, and heart cells.

4. The group blood lack of atigen and antibody:

Blood group   Antibodies        Antigens

A                                Anti-B            A

B                                Anti-A                  B

AB                                None         A and B

5. The left ventricle is thicker than the right ventricle because it has to pump blood to a larger area of the body.

6. The difference between disinfectants and antiseptics is that:

Disinfectants kill microorganisms on surfaces, while antiseptics kill microorganisms on living tissue.

7. The life cycle of a tapeworm begins when an infected animal sheds tapeworm eggs in its feces. If a human ingests these eggs, they hatch in the small intestine and the larvae burrow through the intestinal wall and travel to the liver, lungs, or brain. In these organs, the larvae mature into adult tapeworms.

8. The main differences between cholera and typhoid are:

Cholera is caused by the bacterium Vibrio cholerae, while typhoid is caused by the bacterium Salmonella typhi. Cholera is spread through contaminated water, while typhoid is spread through contaminated food or water. Cholera symptoms typically develop within hours of infection, while typhoid symptoms typically develop within days of infection.

9. The genus name for H0mo sapiens is H0mo and the species name is sapiens.

Learn more about aerobic respiration on https://brainly.com/question/11691469

#SPJ1

Where is the greater solute concentration?

Answers

Answer:

outside the cell BH is in the

Answer:

B. Inside the cell

Explanation:

there are more black molecules inside the cell than anywhere else therefore there is a greater concentration inside the cell.

Cellular respiration and photosynthesis are similar in that both require
O A. glucose
B. membrane proteins
C. oxygen
O D. carbon dioxide
UBMIT
12

Answers

Answer:

If you can choose 2 your answers would be A.Glucose and C.Oxygen but if not try Oxygen.

Which part of a seed acts as the food source for the seed as it grows underground?

Answers

The answer is a cotyledon

PLEASE HELP!!!
what protein is part of the basal lamina outside blood vessels, and activates platelets when they stick to it?
-hemoglobin
-collagen
-fibrinogen
-tissue factor​

Answers

Tissue factor, I think.

Why was Copernicus's heliocentric model not believed until Galileo and Kepler provided mo
The model had the moon orbiting Earth.
The model was against religious teachings.
The model could not explain retrograde motion.
The model did not include all eight planets in the solar system.

Answers

Answer:

the model was against religious beliefs.

Search using the internet on how you can expand or enhance one's knowledge of animal/fish raising.​

Answers

Answer:

Fish farming involves raising a variety of aquatic animals, such as fish, mollusks and shrimps in an enclosure such as a tank or pond. With the surge in demand for healthy animal protein the  demand for fish and fish products is on the rise. Fish farms have the potential to produce fish for home consumption at about $0.90/lb which is a considerable saving when compared to supermarket prices of over $2.00/lb.

The first step for fish farming is to determine what you are going to do with your full-grown fish. You need to know the purpose, whether you are going to keep fish as a pet or for fish meat. This will decide a lot of things like the space requirements, equipment and capital requirements. If you intend to keep fish as a pet for showcase then a small tank or a backyard small fish farm is sufficient. If you intend to put a small fish farm with one or two ponds then also with a little business mindset you can market 1000 to 2000 lb of fish.  

This will also require you to set up a business entity and have a business mindset.The costs associated with raising different types of fish varies because different fish need certain temperature water to live. The type of fish also decides the requirement of equipment and the feed cost. There are lots of laws about raising fish and animals, and even more, stringent laws related to raising animals that are going to be consumed as food.

Before starting fish farms or fish hatchery of any size or type it is advisable to check local laws and the need of permits  to do so in your area.Normally you will get a license to operate your fish farm for a year which will be renewable. You need to submit the following documents to apply for the license:

Filled in application form

Sketch or aerial map of the facility layout, including dimensions

Copy of fish health certificate

Copy of stocking permit

Letter of a written permission from the landowner (in case if you are not the landowner)

Explanation

(I truly apologize if this answer is too long)

Why would a rough, steep mountain habitat have a higher rate of speciation
than a large, open grasslands habitat? I will make u brainliest
A. The mountain has less variety in the environment.
B. The mountain would cause less fragmentation.
O C. The mountain has wider range of environments.
O D. The mountain has more resources.
SUBMIT

Answers

Answer:

I think the correct answer is A

Explanation:

Answer: C. The mountain has wider range of environments.

This sunbird has built a nest.
How does this behavior affect the survival of the sunbird population?
O A. It keeps offspring warm as they grow and develop
B. It communicates to the offspring how to reproduce.
O C. It teaches offspring how to build their own nests.
D. It helps attract a mate and produce offspring.

Answers

Answer:

your answer is  d i think

Explanation:

Answer:

It's A

Explanation:

I got it right, this one is the most logical one since the purpose of a nest is to keep the offspring warm as they grow and develop.

Hope this helps!!

Please help me ASAP thank you

Answers

1. the sun 2. decomposers 3. i’m not sure 4. photosynthesis

Marianne is conducting an experiment on homeostasis in paramecium, which is a type of single-felled organism. Which of these observations provides the strongest evidence of a paramecium maintaining homeostasis

Answers

Hello. You did not present the answer options, which makes it difficult for you to receive a specific answer. However, I will try to help you in the best possible way.

One of the most common evidences that a paramecium is maintaining homeostasis is the pumping of water from the vacuoles present in its body.

The paramecium is a protozoan that lives in aquatic environments, mainly those composed of fresh water. The problem with this environment is that water is able to enter the paramecium organism in large quantities and this can promote the disruption of the organism through lysis of the cell. In this case, homeostasis must act quickly and pump water out of the body, through the cell vacuole.

Homeostasis is a regulatory system of the organism, which must promote the balance of the organism, whenever any external or internal factor tries to harm this balance.

 Which would be worse a change in DNA or a change in mRNA & why

Answers

Answer:

i think its DNA

Explanation:

im not sure

**100 POINTS** DNA is an organic molecule that is the code of life. DNA is made up of smaller molecules that form together into two chains. Those chains spiral around each other to form the DNA molecule. Which dichotomous key best describes DNA?

Answers

Answer:

Each step is based on genetic traits

Explanation:

so I think u can choose which one it is based on wht i said

a diagram that models the process of photosynthesis is shown below complete the diagram by filling in the missing labels.
I have this so far

Answers

Answer:

reactants = carbon dioxide & water

energy source = light

waste product = oxygen

primary energy = glucose

Explanation:

The energy source is light, reactants are carbon dioxide and water, the waste product is oxygen and primary energy is glucose.

What is photosynthesis?

The sustainability of the significant number of life on Earth depends on photosynthesis. It is how almost all of the energy in the biosphere is made accessible to living beings.

All higher living forms on Earth consume photosynthetic organisms directly or indirectly since they are the primary producers that serve as the foundation of the planet's food webs.

Additionally, photosynthesis is responsible for producing virtually all of the oxygen in the atmosphere. The majority of creatures would vanish, there might soon be little food or other organic stuff on Earth, and the atmosphere would eventually be almost barren of gaseous oxygen if photosynthesis stopped.

Commonly used notation for photosynthesis is: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂. This indicates that the reactants, six carbon dioxide molecules, and six water molecules, are transformed into a sugar molecule and six oxygen molecules, the products, by light energy being absorbed by chlorophyll (implied by the arrow).

The creature consumes the sugar, and as a byproduct, oxygen is produced.

Therefore, the energy source is light, reactants are carbon dioxide and water, the waste product is oxygen and the primary energy is glucose.

Read more about photosynthesis, here

https://brainly.com/question/1388366

#SPJ5

A solid is that form of matter that possesses the following
characteristics __.
a
Particles vibrate around fixed axes
b Definite shape
C
Definite volume
d All of the above

Answers

Definite volume is doesn’t possess a definite volume so therefore the answer is c

Wave frequency is measured in units
called Hertz (Hz). One Hertz is defined as
one wave per second. Suppose a person
counted 10 waves passing by over a time
period of 1 second. What is the wave
frequency?

Answers

Answer:

it will be 10Hz ,because number of waves per second is 10 so we divide with 1second

The wave frequency of a wave which is passing by 10 waves over a time period of 1 second will be 10 Hertz (Hz).

What is Wave frequency?

Wave frequency can be defined as the number of waves which are passing through a fixed point in a given amount of time period. The SI unit for the wave frequency is the hertz (Hz), where 1 hertz is equal to 1 wave which is passing through a fixed point in the time period of 1 second. A higher-frequency wave has generally more energy than a lower-frequency wave with the same magnitude of amplitude.

The wave frequency of a wave which is counted to be 10 waves passing through a point in a time period of 1 second will be 10 Hertz (Hz).

Learn more about Frequency here:

https://brainly.com/question/14316711

#SPJ2

Identify the two genes of each parent that would always produce an ear of corn which has all yellow kernels.

Answers

It would be YY or Yy

A certain species has little genetic variation the rapid extinction of this species would most likely result from the effects of

Answers

Answer:

Environmental change

Explanation:

A species that has little genetic variation cannot evolve (change) in response to variable environmental conditions because genetic variation is the raw material on which natural selection operates to select individuals. Adaptation to changing environmental conditions only can occur when there is variation (either genetic or phenotypic variation). In consequence, a species with low genetic variation is at a high risk of extinction, especially in challenging environments.

Examine the diagram of the nitrogen cycle.
Which option best describes what's happening in the part
labeled 3?
Ammonia, nitrates, and other compounds dissolve in
water and are carried to the oceans.
Human activities add nitrates and other compounds
to Earth's systems.
O Nitrogen is stored in the largest reservoir on Earth.
Nitrogen-fixing bacteria convert nitrogen gas into
compounds usable by plants and animals.

Answers

The part labelled 3 shows nitrogen is stored in the largest reservoir on Earth.

What is the nitrogen cycle?

The transformation and cycling of nitrogen in various forms throughout ecosystems is referred to as the nitrogen cycle, a biogeochemical process. The nitrogen cycle involves the transformation of nitrogen between various chemical forms so that it is available for use by plants and other creatures.

Nitrogen is a crucial element for the growth and development of living beings.

Learn more about nitrogen cycle:https://brainly.com/question/31808912

#SPJ1

7. Phytoplankton + Shrimp → Snapper → Shark
There are 2,500 kcal available for the 1st trophic
level.
There are kcal available for the 2nd trophic level.
There are kcal available for the 3rd trophic level.
There are 2.5 kcal available for the 4th trophic level.
Fill in the organisms and energy amounts on the
pyramid to the right
8. Use the food chain you created in #3 and complete

Answers

Answer:

The first level is 2,500

The second is 250

The third level is 25

and the fourth level is 2.5

Explanation:

The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.

Am I supposed to answer #8?

The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.

What is an ecosystem?

An ecosystem consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows.

Moreover, 7 major ecosystems are forest ecosystem, grassland ecosystem, tundra ecosystem, desert ecosystem, freshwater ecosystem, and marine ecosystem.

Hence, healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. They provide raw materials and resources for medicines and other purposes. They are at the foundation of all civilization and sustain our economies.

Learn more about ecosystem:

https://brainly.com/question/13979184

#SPJ2

(12.02 MC)
Why are spines considered a physical characteristic adaptation in cactus?

Answers

white dense spines help reflect sunlight spines provide shade cacti stem is thick and fleshy to store lots of water stem has waxy waterproof coating to help keep water in the cacti

Explain the difference between a data table and a graph.
When do you use a data table?
When do you use a graph?
HELP ME!!!

Answers

Answer:

A data table is a visual instrument comprised of labeled columns and rows, while a graph is a diagram showing the relation between variable quantities, typically of two variables, each measured along one of a pair of axes at right angles.

They are used for different purposes, depending on the problem

A data table is a visual instrument comprised of labeled columns and rows, while a graph is a diagram showing the relation between variable quantities, typically of two variables, each measured along one of a pair of axes at right angles.

Grasses
Grasshoppers
Frogs
Hawks
Snakes
Decomposers
Which organisms in the food web shown above compete for the same
food source in this environment?

Answers

Answer:

Frogs and snakes.

Explanation:

I answered this question for another person, plus, this is the only reasonable answer.

inquiry based pedagogy is being embraced in principle across the globe. in the last decade , it has been supported by an increasing body of research on its effectiveness. illustrate your understanding of the concept of inquiry based pedagogy with a relevant example​

Answers

Inquiry-based pedagogy involves fostering curiosity and active learning. For example, students investigating real-world environmental issues and proposing solutions.

Inquiry-based pedagogy is a teaching approach that promotes active learning and critical thinking through inquiry and exploration. One relevant example of inquiry-based pedagogy is a science classroom where students are encouraged to design and conduct their own experiments. Instead of simply following instructions, students formulate research questions, develop hypotheses, plan and execute experiments, collect and analyze data, and draw conclusions. For instance, students may investigate the effect of different variables on plant growth by manipulating factors like light, water, or soil composition. This approach allows students to engage in authentic scientific practices, develop problem-solving skills, and gain a deeper understanding of the scientific method. By actively participating in their learning process, students develop a sense of ownership and become more engaged, fostering a love for learning and nurturing their ability to explore and discover knowledge independently.

For more such questions on Pedagogy:

https://brainly.com/question/32239495

#SPJ8

If a heavy box represents a molecule which of the following represents passive transport in a cell

Answers

Answer:

um theres nothing there

Explanation:

Answer:

A

Explanation:

bc i got it right on a test :)

Discuss the importance of the change in CO with exercise?

Answers

Enhancing cardiac output allows you to maintain lower heart rates during physical activity. During exercise SV will increase related to the response of the increased pressure of the heart in order to supply blood to the body.


6. What two places might a free-floating DA molecule end up?

Answers

is there any answer choices before i start answering ur question
Other Questions
Which of the following is a major function of the Board of Directors of a company?a. Approving decisions made by divisional managersb. Monitoring line managersc. Aligning corporate strategy with stockholder interestsd. Creating contracts with supplierse. Designing marketing strategies for the company Using P=7If 0(z) = y + ja represents the complex potential for an electric field and a = p? + + (x + y)(x - y) determine the function(z)? (x+y)2-2xy Indicate in each independent case whether the is to be debited (DR) or to be credited (CR). Write your answer on your activity notebook. 1. Increase in accounts Payable 2. Decrease in Owner's Equity 3. Increase in Service Revenue 4. Increase in Cash 5. Decrease in Accounts Receivable B. Direction: Journalize the following transactions of ABC Consultancy Services for the month of June 2020. In 1/1/2022 the Gulf bank started it's businesses in Bahrain with the capital of 10000000 BD. 5000000 BD is deposited on the central bank, 2000000 BD deposited on Arab Bank, and 1000000 BD deposited on National of Bahrain bank, and the rest of the capital kept on the bank cash. The following transaction happened on the first week 2- Withdrawing 1500000 BD from Arab Bank and deposit the money in the central bank 3- 200000 BD paid cash to payment fund on the bank 4- The bank paid from the payment fund 50000BD, rent of the bank offices and 7500 BD Stationary 5- The bank purchased furniture cost of 75000BD, paid by check to be paid from Arab Bank account 6- The bank purchased computers cost of cost of 30000BD, cars cost of 50000, paid by check to be paid from National bank of Bahrain 7- The amounts that the bank received by the receipt account was 220000 as follows. 102000 BD Current accounts 28000 BD saving accounts 80000 BD debit accounts 8- The amounts that the bank accounts have withdrawals cash from bank as follows. 55000 BD Current accounts 30000 BD saving accounts 9- the service fees that the bank deducted from the accounts as follows 1000BD from current accounts 500BD from saving accounts Requirements: Record the financial transactions on Gulf bank books What was/were the purpose(s) of Early Christian art? Give anexample. In the process of learning acceptable rules of behavior, most of the time ______________________. Four years ago a person borrowed $15,000 at an interest rate of 10% compounded annually and agreed to pay it back in equal payments over a 10 year period. This same person now wants to pay off the remaining amount of the loan. How much should this person pay? Assume that she has just made the 3rd payment. A sled is being held at rest on a slope that makes an angle with the horizontal. After the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. Find the coefficient of kinetic friction k between the sled and the ground, assuming that it is constant throughout the trip. Mu_k =d_{1}\frac{{\sin}\left({\theta}\right)}{\left(d_{2}+d_{1}{\cos}\left({\theta}\right)\right)} (THIS IS CORRECT!)Suppose the same sled is released from the same height on the same slope. This time, however, assume that the coefficient of kinetic friction between the ground and the sled is a known quantity, mu, and, as before, constant throughout the trip. After the sled is released, it slides the same distance d_1 down the slope and then moves a certain (unknown) distance along the horizontal terrain before stopping. Find the distance d traveled by the sled from the end of the slope until it comes to a stop. Express your answer in terms of the variables d_1, mu, and theta now that patricia has received her doctorate and been hired to teach at a university, she has become professor plum, a __________ leader with __________ power. All else equal, which statement regarding Australia's currentaccount is correct? a. Running a current account deficit isproblematic and should be avoided b. An increase in the officialaid payment s a flexible container holding 4.00 moles of gas contracts from 89.6 l to 44.8 l when some gas is release What is the expected standard deviation of stock A's returns based on the information presented in the table? Outcome Probability of outcome TStock A return in outcome Good TON 2010 Medium TO 1300 low 21.27% (plus or minus 0.10 percentage points) b. 40.00w (plus or minus 0.10 percentage points) c.25.61 (plus or minus 0.10 percentage points) d. 32.66 plus or minus 0.10 percentage points) The expected standard deviation cannot be estimated because the probability of the bad outcome is not given or the standard deviation can be computed from the given information, but none of the above is within 0.10 percentage points of the correct answer write in standard form (x+4)(x^2+x-2) Please please help I need help and Im lost thank you which of the following is not a type of behavior-analysis design?a. stable baselineb. interrupted time-series designc. multiple-baselined. triangulation designe. reversal design dan bought a hotel for $2,600,000 in january 2018. in may 2022 he died and left the hotel to ed. while dan owned the hotel, he deducted $289,000 of cost recovery. the fair market value in may 2022 was $2,800,000. what is the basis of the property to ed?$2,600,000$2,800,000$2,321,000$289,000 An investor is considering the relative risks associated with two projects. The first project has a mean expected profit of 5000 with a standard deviation of 707.11. The second project has a mean expected profit of 500 with a standard deviation of 212.13. Use the coefficient of variation to establish which project has the lower degree of risk. bbbDifferentiate job-order cost accounting from process costaccountingGive concrete examples for eachDuring February, Cardella Manufacturing works on two jobs: A16 and B17. Summary data for these jobs are as follows: Manufacturing Costs Incurred Raw materials purchased on account: $54,000 Factory lab Which of the following types of alliances can be formed between a company and a foreign government?A) international joint ventureB) equity strategic allianceC) non-equity strategic allianceD) global strategic alliance Given the following data for the Grouper Company:Current liabilities $616Long-term debt 600Common stock 744Retained earnings 1140Total liabilities & stockholders equity $3100How would common stock appear on a common size balance sheet?26%68%14%24%