Which of the following is a difference between arteries and viens?
arteries carry blood and veins carry only plasma
arteries do not have valves and veins do have valves
arteries are thin and veins are thick
arteries carry blood back to the heart and veins carry blood to the heart

Answers

Answer 1
prob D i have no clue

Related Questions

Which is not true about amphibians
2. Many lack legs during their life cyce.
Most have developed a lateral line system,
Most depend on outside water sources to keep their body moist
Many spend part of there in the water and part of​

Answers

Answer:

many lack legs during their life cycle

Which is a byproduct of using hydrogen fuel?


electricity

smog

water

carbon dioxide

Answers

Answer:

Hello There!!

Explanation:

The answer is=>Water.

hope this helps,have a great day!!

~Pinky~

To survive, an organism must be able to maintain stable internal conditions in a changing environment. This process is called homeostasis. The Human Homeostasis Gizmo™ allows you to explore how the human body stays at a nearly constant temperature in different conditions. Notice the Air temp. and Body temp. thermometers representing the air temperature and body temperature.
1. What is the initial air temperature?
2. What is the initial body temperature?
3. Next to each factor listed below, write "increase," "decrease," or "same" based on how you expect that factor to affect body temperature.
A. Raising air temperature: __same____Sweating: __decrease___.
B. Lowering air temperature: ___increase___Shivering: __increase___.
C. Adding clothing: __increase_____Exercising: ___increase_____.

Answers

Answer:

1. Initial air temperature: 0 °C (32 °F)

2. Initial body temperature: 37 °C (99 °F)

3. The expected effect of different factors on body temperature are:

   A. Raising air temperature: Increase

   B. Lowering air temperature: Decrease

   C. Adding clothing: Increase

   D. Exercising: Increase

Explanation:

The question is incomplete, it is necessary to look for a software related to this homework.

Homeostasis is a property of organisms that consists in their capacity to maintain a stable internal condition by compensating for changes in their environment through the regulated exchange of matter and energy with the exterior. It is a a dynamic equilibrium controlled by a mechanism of feedback that constitute the self-regulating mechanisms. Examples of homeostasis are temperature regulation and the balance between acidity and alkalinity (pH)

The Human Homeostasis Gizmo™ is a software that allows you to explore  how the human body stays at a nearly constant  temperature in different conditions.  To use it, you have to set the air temperature at 0 °C (32 °F) and the body temperature at 37 °C (99 °F), and click Play. After a simulation of 1 hour, then click Pause and gather the information. Then, do the same cprocedure  to test the effect of other factors and Click Reset between each trial. To determine the effect of different factors on body temperature, you have to compare the  final body temperature to the final body temperature while  there is no specific movement or change.

Then:

1. Initial air temperature: 0 °C (32 °F)

2. Initial body temperature: 37 °C (99 °F)

3. The expected effect of different factors on body temperature are:

   A. Raising air temperature: Increase

   B. Lowering air temperature: Decrease

   C. Adding clothing: Increase

   D. Exercising: Increase

This is for a logical reason, anything you do to heat it or generate heat, will increase the temperature. And anything you do to generate cold, will lower the temperature.

The effect of different factors on body temperature according to Gizmo:

   A. Raising air temperature: Increase

   B. Lowering air temperature: Decrease

   C. Click Add to a sweatshirt, hat, pants, and  parka. Then, adding clothing:

   Maintained

   D. Set the Exercise level to 70%, then exercising: Increase

When the temperature increases, it is because you are able to record the results from the software and you see temperature goes from 99 °F to 100 °F. When the temperature decreases. it is because it goes from 99 °F to 97 °F. When it is maintained, there is no change.  

The genetic code was elucidated through the use of polyribonucleotide's synthesized either enzymatically or chemically in the laboratory. Given what we now know about the genetic code, how would you make a polyribonucleotide that could serve as an mRNA coding predominantly for may Phe residues and a small number of Leu and Ser residues?
What other amino acid(s) would be encoded by this polyribonucleotide, but in smaller amounts?

Answers

Answer:

The genetic codes are responsible for coding the amino acids. The messenger RNA (ribonucleic acid) consists of triplet codons, which is responsible for the synthesis of respective amino acid sequences. The UUU codes for the phenylalanine amino acids. Similarly, the incorporation of 5 mixtures such as ADP, GDP, CDP, and UDP can alternatively produce the mRNA polymer with the serine and lysine residue in a small amount.

EXPLANATION:

The genetic codes are responsible for coding the amino acids. The messenger RNA (ribonucleic acid) consists of triplet codons, which is responsible for the synthesis of respective amino acid sequences. The formation of the RNA stand is done by using ADP, GDP, CDP, and UDP (adenosine, guanosine, cytosine, and uridine diphosphate). It requires no template for the formation of polymers. Therefore incorporation of UDP is done by the incorporation of polynucleotide phosphorylase, which will result in the formation of poly U. The UUU codes for the phenylalanine amino acids. Similarly, the incorporation of 5 mixtures such as ADP, GDP, CDP, and UDP can alternatively produce the mRNA polymer with the ser and lysine residue in a small amount. For example in the stretch of polynucleotide UUU presence of one of the following codon UUA, UUG, CUU, CUC, CUA, CUG as well as UCU, UCC, UCA, UCG, and AGU can synthesize leucine and serine residues. (UUC)n can synthesize the polymer of phenylalanine, serine, and incorporation of few A and G will synthesize leucine. However, the presence of A, C, and G can also synthesize a small amount of tyrosine, isoleucine, and cysteine residue.

Two fruit fly cells are observed. Cell A has 16 chromosomes and the Cell B has 8 chromosomes. Which of the following is true?
а
b
ОООО
Cell A is in interphase and cell B is in prophase.
Cell A is in metaphase and Cell B is in interphase
Cell A is in anaphase and cell B is in prophase
Both cells are in prophase

Answers

Answer:

both cells are in prophase

Explanation:

How does variation affect an organism?

Answers

Answer:

Explanation:

Genetic variation in a group of organisms enables some organisms to survive better than others in the environment in which they live. Organisms of even a small population can differ strikingly in terms of how well suited they are for life in a certain environment. An example would be moths of the same species with different color wings.

necesito ayuda con esta sopa de letras por favor​

Answers

Answer:

Do you have a list?

Explanation:

In a semi-conservative model of DNA replication, which of the following is true?

Answers

Answer:

According to the semiconservative model, after one round of replication, every new DNA double helix would be a hybrid that consisted of one strand of old DNA bound to one strand of newly synthesized DNA. ... Each subsequent round of replication would then produce double helices with greater amounts of new DNA.

The semiconservative model, after one round of replication, every new DNA double helix would be a hybrid that consisted of one strand of old DNA bound to one strand of newly synthesized DNA. Each subsequent round of replication would then produce double helices with greater amounts of new DNA.

Why do they call it semi-conservative?

This ]method is known as semi-conservative replication because two copies of the original DNA molecule are made, each copy conserving (replicating) the details from one half of the original DNA molecule.

Each copy has one actual strand and one newly-synthesized strand.

Thus,  new DNA double helix would be a hybrid that consisted of one strand of old DNA bound to one strand of newly synthesized DNA.

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Please, serious answers only, don't search it up. Can an animal adapt into a new species? If so, why?

Answers

Answer:

Hi how are you doing today Jasmine

Answer:

Yes, an animal can adapt into a new species through a process called speciation. Speciation occurs when a population of animals undergoes significant changes over time, leading to the formation of a new species that is different from the original one.

Explanation:

REASON

The main reason for this adaptation and the emergence of a new species is natural selection. Natural selection is the process by which individuals with advantageous traits are more likely to survive and reproduce, passing on those traits to their offspring. Over many generations, these advantageous traits become more common in the population, while individuals without these traits become less common.

When a population of animals faces different environmental conditions or habitats, it can create diverse selection pressures. Some individuals may possess traits that allow them to better adapt to these new conditions, giving them a higher chance of survival and reproduction. As these advantageous traits become more prevalent in the population, they can eventually lead to reproductive isolation.

Reproductive isolation occurs when individuals from the original population can no longer mate and produce fertile offspring with individuals from the newly adapted population. This can happen due to genetic differences and changes that have accumulated over time. When reproductive isolation is complete, the two populations are considered separate species.

SUMMARY

Overall, the process of adaptation and the formation of new species is driven by natural selection, which favors traits that enhance an organism's chances of survival and reproduction in specific environments. Over time, these changes can accumulate, leading to the development of distinct species.

PLEASE MARK AS BRAINLIEST IF SATISFIED WITH THIS ANSWER

Help I will give extra points to anyone who helps question is In the photo

Answers

Answer:

C. 3

Explanation:

Looking at the graph, it goes fastest in the shortest time in sector 3.

why in an ovary, germ cells undergo oogenesis (enter meiosis) during fetal life (before birth). but in a testis, germ cells do not undergo spermatogenesis (do not enter meiosis) until puberty?

Answers

Ovary is in the vagina- girl body part. Ovary contains eggs, which then can be fertilized by sperm in order to create a baby. Germ cells enter meiosis as the sperm connects to the egg to fertilize and then create a zygote-> embryo->, etc. Testis is in the penis- boy body part. HOPE THIS HELPS!

Match the organism on the left with its role in the ecosystem on the right.

a. Butterfly orchid
b. Tree frog
c. Parrot fish
d. Cotton mouse
e. Climbing aster
f. Burmese python
g. Hardwood hammock

1. Producer
2. Niche
3. Decomposer
4. Secondary consumer
5. Animal
6. Primary consumer
7. Habitat

Answers

Answer:

a. Butterfly orchid

b. Tree frog

c. Parrot fish

d. Cotton mouse

e. Climbing aster

f. Burmese python

g. Hardwood hammock

Explanation:

a. Butterfly orchid- producer

b. Tree frog- consumer

c. Parrot fish- secondary consumer

d. Cotton mouse- primary consumer

e. Climbing aster- niche

f. Burmese python- animal

g. Hardwood hammock- habitat

#deadlywanderi
.
.
Describe mass of an object

Answers

Answer:

MARK AS THE PLSSS AND YOUR WELCOME

Match the given bones to their common names.

Answers

Answer:

femur = thigh bone

tibia =shin bone

humerus = upper arms

fibula = calf bone

The correct matching of the bones are as follows:

upper arm - humerusthigh bone - tibiacalf bone - femurshin bone - fibula

What are bones?

Bones are solid and tough mineralized structures which form part of the skeleton in humans.

There are 206 bones in the human skeleton.

The names of the bones given are as follows:

upper arm - humerusthigh bone - tibiacalf bone - femurshin bone - fibula

Therefore, bones make up skeleton in humans.

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One conclusion drawn from the experiment was that life span differences were independent of reproductive investment. If that is the case, then which of the following statements is true? Females that exhibited catch-up growth and produced many eggs had longer life spans than females that exhibited catch-up growth and produced few eggs. Females that exhibited catch-up growth and produced few eggs had longer life spans than females that exhibited catch-up growth and produced many eggs. Females that exhibited slowed growth and produced many eggs had longer life spans than females that exhibited slowed growth and produced few eggs. Females that exhibited slowed growth and produced few eggs had longer life spans than females that exhibited slowed growth and produced many eggs. Females that exhibited slowed growth and produced few eggs had similar life spans to females that exhibited slowed growth and produced many eggs.

Answers

Answer:

The correct answer is -  Females that exhibited slowed growth and produced few eggs had similar life spans to females that exhibited slowed growth and produced many eggs.

Explanation:

According to the question, the life span differences were independent of reproductive investment, on the basis of this experiment, it is clear that the sexual gametes or egg which is a reproductive investment are independent of the lifespan of a female.

The life span of females could be slow growing or not but it will not affect the production of the gametes or eggs. Eggs production is dependent upon hormones produced.

What are two natural processes in which ammonia is created?

Answers

It is made in the soil from bacterial processes and from the decomposition of animals and plants
nitrogen fixation and ammonification

All of the following affect groundwater contamination except:
soil type
pesticide mobility
soil mobility
pesticide application method

Answers

Answer: soil type

Explanation:

All of the following affect groundwater contamination except Soil type.

What is Soil type?

In soil science, a soil type is a taxonomic unit. A distinctive soil type is made up of all soils that have a certain set of well-defined features in common.  

The phrase "soil type" refers to the study of soil classification, which is concerned with the orderly classification of soils. Every soil on the planet is a particular soil type.

The majority of soil types in hierarchical soil classification schemes are in the higher or intermediate level. Typically, a soil type can be further broken down into subtypes, and in many systems, multiple soil types can be joined to form higher category entities.

Therefore, All of the following affect groundwater contamination except Soil type.

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Please select the word from the list that best fits the definition

Grouping items together to keep observations organized


inferring


predicting


classifying


observing

Answers

The answer is classifying.

~~~~~~~~~~~~~~~~~~~~~~~~~~~

Definition: Arranging (a group of people or things) in classes or categories according to shared qualities or characteristics.

Explain how where a person lives might affect his or her mood.

Answers

Answer:

When they go through something horrible for example (death,relationship break ups, and friendships ending etc.) that can affect their personality and their emotional stability they can also change to a whole different person.

Explain how soil erosion may contribute to famine.

PLEASE HELP

Answers

Answer:

Soil erosion inhibits our ability to grow nutritious food. Causeing a food shortage which will lead to a famine.

Explanation:

Question 2
Which is a plausible solution to human activities contributing to increasing amounts of carbon dioxide in the atmosphere?
А
Use only alternative energies for the production of electricity
B
Require all new automobiles manufactured to run on electricity rather than gasoline.
с
Plant more trees and decrease deforestation practices so that more carbon dioxide can be absorbed from the atmosphere.
D
Require everybody to use mass transportation or methods of transportation that do not require burning fossil fuels, such as riding bicycles,
©2021 Illuminate Education Inc.

Answers

Answer:

hmm

Explanation:

On Earth, human activities are changing the natural greenhouse. Over the last century the burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.

Plausible solution to human activities contributing to increasing amounts of carbon dioxide(carbon emission) in the atmosphere are :

Use only alternative energies for the production of electricity
Require all new automobiles manufactured to run on electricity rather than gasoline.
Plant more trees and decrease deforestation practices so that more carbon dioxide can be absorbed from the atmosphere.
Require everybody to use mass transportation or methods of transportation that do not require burning fossil fuels, such as riding bicycles.

What is carbon emission ?

Carbon emission (greenhouse gas emissions) from human activities strengthen the greenhouse effect, causing climate change. They cause climate change by trapping heat, and they also contribute to respiratory disease from smog and air pollution.

Alternative energy is energy that is collected from renewable resources that are naturally replenished on a human timescale, hence contributing to betterment of environment.
Electric automobiles do not cause carbon emission.
Trees absorb the carbon dioxide from the environment and release oxygen.
Mass transportation will cut the cut out the percentage of carbon emission by several folds.

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Base excision repair is responsible for fixing (select all that apply): Group of answer choices individual damaged nucleotides that minimally impact the helix structure. double stranded breaks. single stranded breaks. individual damaged nucleotides that cause a major impact to the helix structure.

Answers

Answer:

-- individual damaged nucleotides that minimally impact the helix structure.

-- single stranded breaks

Explanation:

The Base excision repair is popularly known as the BER. It is defined as the cellular mechanism which repairs the DNA that are damaged throughout the cell cycle. It helps in correcting the the small base lesions which do not distort the helix structure of the DNA significantly. It is also responsible for fixing the single stranded breaks of the DNA.

que es un bioma?????????????????????

Answers

una gran comunidad natural de flora y fauna que ocupa un hábitat importante, p. ej. bosque o tundra.

Which has a greater solubility? 0.5mm 1.0cm 0.5cm 0.1mm

Answers

Answer:

1 cm

Explanation:

1 cm is the answer...

Epinephrine initiates a signal transduction pathway that involves the production of cyclic AMP (cAMP) and leads to the breakdown of glycogen to glucose, a major source of energy for cells. But glycogen breakdown is only part of the fight-or-flight response that epinephrine brings about; the overall effect on the body includes increased heart rate and alertness, as well as a burst of energy. Given that caffeine blocks the activity of cAMP phosphodiesterase, propose a mechanism by which caffeine ingestion leads to heightened alertness and sleeplessness.

Answers

Answer:

Epinephrine initiates a signal transduction pathway that involves the production of cyclic AMP (cAMP) and leads to the breakdown of glycogen to glucose, a major source of energy for cells. But glycogen breakdown is only part of the fight-or-flight response that epinephrine brings about; the overall effect on the body includes increased heart rate and alertness, as well as a burst of energy. Given that caffeine blocks the activity of cAMP phosphodiesterase, propose a mechanism by which caffeine ingestion leads to heightened alertness and sleeplessness.

Explanation:

HELP PLEASE
What behavior allows newborn animals to recognize and follow the first moving object they see?

Question 4 options:

conditioning


courting


mimicking


imprinting

Answers

Answer: imprinting

Explanation: i took the test

which characteristics of living things occur when a butterfly sucks nectar from the nectary of a flower

Answers

Answer:

Because butterfly helps in asexual reproduction in plants and nutrition for butterfly

Explanation:

Which of the following are mechanical waves?
A sound wave
B earthquake wave
C surface wave
D electromagnetic wave

Answers

Answer:

A) sound wave.

Explanation:

A sound wave is an example of a mechanical wave. Sound waves are incapable of traveling through a vacuum

A roan coloration is the product of crossing a red bull and a white cow.
You cross a roan bull and a red cow. Answer the following question.
What type of inheritance does this show?
O A. Incomplete Dominance
O B. Codominance
OC. Sex-linked
O D. Complete Dominance
HELPP

Answers

ANSWER

ITS B HFHDHDHDHHFHDHDD THIS WAS ONE OF MY QUESTIONS IN MY MAP TEST TODAY-

Nervous system basis of Parkinson's disease

Answers

Answer:

hope the image helps :)

Explanation:

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You have been given the task of finding out what proportion of students that enroll in a local university actually complete their degree. You have access to first year enrolment records and you decide to randomly sample 110 of those records. You find that 87 of those sampled went on to complete their degree. a)Calculate the proportion of sampled students that complete their degree. Give your answer as a decimal to 3 decimal places. Sample proportion Can someone help me with these math questions? If a judge bases his or her final decision on existing law, it is an example of common law; what is the decision called that a judge arrives at from a case with unique circumstances? Need help quick with full work Which statement best describes the relationship that exists among proteins, DNA, and cells?O Proteins combine to produce cells, which produce DNA.O Proteins are made up of DNA, which determines the cells that are produced.O DNA is made up of lipids, which tell a cell how to function.O Cells contain DNA, which codes for the production of proteins. which parrots were killed by predators What is the environmental change shown in the image? A) Disease B) Lack of food and water C) Reduced space D) Pollution !!!!!!!PLEASE HELP I DNT UNDERSTAND!!!!!! WILL GIVE BRAINLYIEST Write the one word that ends in an "a" vowel with the syllable division between two consonants. The spelling words are in the pictures below. If there are 1.55 x 1024 molecules of hydrogen peroxide (H2O2), what is the mass of thesample? Match the ballet vocabulary words by identifying if the movement is performed stationary (in place) or traveling (can move across the floor)! A rollercoaster cart that has a mass of 4500 kg has 67.5 kJ (kilojoules), or 67,500 J (joules), of gravitational potentialenergy. What is its height above the ground?PT.2The same 4500 kg rollercoaster cart is moving with 63.0 kJ (kilojoules), or 63,000 J (joules), of kinetic energy at thebottom of its biggest hill. What is its velocity? The rectangle ABCD is reflected across the y-axis. What are thecoordinates of the vertex A'? List 5 points you read about Chief Joseph following the format below.1.) Who2.) When3.) What4.) Where5.) Why6.) Hownote bit links will be reported R is the ideal gas constant. We know it is equal to 0.0821. What is the unit for R?Latm/mol KLatm/mol CmL atm/mol. KL kPa/mol - K Marbury v. Madison, How does it relate to the Constitution? The dot plot shows the number of hours Stan worked each week for the last 3 months. What fraction of the total number of weeks did Stan work 15 or more hours? Express in simplest form. What is the purpose of a seed coat? (Select all that apply.)A. protects the seed from damage as it travelsB. provides food for the seedC. helps the seed begin photosynthesisD. keeps the seed from drying out !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Which is a thesis statement?Dozens of monarchies still hold power around the world, but how do theyserve the public?The British Monarchy is an outdated institution that should be phased out.