Answer:
1. Pollen tube
2. Style
3. Ovary
Explanation:
This process is describing the process of POLLINATION, which is the transfer of pollen grains from the anther of a male flower (androecium) to the stigma of the female flower (gymnoecium). After pollination i.e. the pollen has landed on the sticky stigma, the pollen grows out a tube called POLLEN TUBE.
The pollen tube extends through the STYLE of the female flower called PISTIL to the OVARY. The ovary is the reproductive part of the female flower that produces the ovules, which the sperm in the pollen is about to fertilize.
A student attaches a rope to the handle of a chest loaded with few books , books while the other end of the rope is tied to a scale. The student pulls the scale with just enough force to set the chest in motion and records the force applied on the spring scale. The student repeats the experiment with more books in the chest and records the data in a table.
Answer:
B. As the mass of the chest increases, more force is required to pull it.
Explanation:
Option B is the correct that can be concluded from the data.
From the data, we can see that the mass of the chest is on the increase; it increases from 50, 75, 100, 150 and to 175. Also, in the force column, we can see an increment in the force also; from 0.25, 0.50, 1.15, 1.50 and to 1.70. So, from this data, we discover that as the mass increases, the force needed to pull it increases also.
Moreover, this is true even logically. If you want to pull an object with a heavy, more force will be required to pull it. Therefore, Option B is the correct answer.
Which of the following describes prophase of mitosis?
A. Chromosomes condense and nuclear membrane breates down.
B. Homologous chromosomes line up along the equator of the cell.
C. Cytoplasm divides as cell prepares to become two new cells.
D. Daughter chromosomes move toward opposite poles of the cell.
Answer:
Daughter chromosomes move toward opposite poles of the cell.
Explanation:
Prophase is the beginning of cell division. At this stage, the CHROMATIN from which the chromosomes are formed thickens and twists spirally and CHROMOSOMES are formed which become visible under a microscope.
CENTRIOLS are organelles whose main role is to form a dividing spindle during cell division, now they separate and move towards the poles of the cell.
When they reach the poles, the threads of the dividing spindle are formed between them. Chromosomes are attached to these threads.
34. Education, Fuel, Food and Clean water are all listed as important factors in limiting….
a. Human Development index
b. Gross Domestic Product
c. Infant Mortality
d. Carrying Capacity
Answer:
A. Human Development index
Explanation:
The Human Development Index is a statistic composite index of life expectancy, education, and per capita income indicators, which are used to rank countries into four tiers of human development.
hope i helped
its not gdp nor infant mortality nor carrying capacity
and much more
Answer: the answer is A
Explanation:
30. How many DNA codes are used by life on Earth?
Answer:
That's how much information is stored in the DNA inside every human cell: the entire human genome. If you sort through the three billion letters that make up the human genome, you find some surprising things. Only about 1% of the three billion letters directly codes for proteins.
Explanation:
The DNA code contains 64 combinations that are named as codons. These codons are coding for the 20 amino acids, which the cell then puts together to form long amino acid chains, known as proteins.
What is DNA?DNA stands for deoxyribonucleic acid. It may be defined as a molecule that is present inside cells that contains the genetic information responsible for the development and function of an organism. DNA molecules allow this information to be passed from one generation to the next.
There are 3.2 billion DNA codes that are used by life on Earth. Of the three billion genetic building blocks that make us living things, only a handful are uniquely ours. In fact, despite our differences on the outside, humans are 99.9% genetically similar to one another.
Our genetic manual holds the instructions for the proteins that make up and power our bodies. But less than 2 percent of our DNA actually codes for them. The rest 98.5 percent of DNA sequences is so-called “junk DNA” that scientists long thought useless.
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Based on the data provided in the graphical model, predict the current that would flow through a circuit, similar to the
ones studied, that is powered by a battery with a voltage of 15 V.
A.15 ampere
B. 25 ampere
C.36 ampere
D. 60 ampere
Help me with this please.
Answer:
just watch the video it gives you tge anwers
Do blind people dream in visual images???
Answer:
hello good morning ............
Answer:
yes they do, yet they dream in images less than people with sight. They usually have dreams consisting of the other four senses.
Explanation:
I was very curious about this subject when I was younger.
Hope this answers your question:)
Which best explains parallel forces?
left and right forces that can be added together
right and upward forces that cancel each other out
addition of parallel forces that cannot result in a negative force
left and downward forces that cancel each other out
Answer:
A
Explanation:
edu 2020
Statement that best explains parallel forces is left and right forces that can be added together.
What is a parallel force?parallel force can be regarded as the forces that act in the same direction, it could also be the force that act at opposite directions on an object.
Therefore, parallel forces are left and right forces that can be added together.
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According to Chargaff's rule of base pairing, which of the following is true about DNA?
O A=G and C=T
O A=T and C=G
O A=T=G=C
O A=C and G=T
Answer:
a = t and c = g
Explanation:
just took the test, hope this helps <3
brainliest pls? :)
The Char gaff rule is all about the number of adenine is equal to the number of thymine and with that the number of cytosine is equal to the number of guanine. The correct answer is option B.
What are the types of bonds that are present in between these nitrogenous bases ?The kind of bonds that are present in these nitrogenous bases are hydrogen bonds. A binds with T with two hydrogen bonds and C binds with G through 3 hydrogen bonds.
It is all about that the number of purines is equal to the number of pyrimidines. The number of adenine molecule are present totally in equivalence to the number of thymine molecules.
The number of guanine molecules are present in the molecule of DNA are totally in numbers to the cytosine. In place of thymine uracil is present which is present in RNA.
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In the Krebs Cycle of cellular respiration, pyruvate is used to make
A.oxygen
b. carbon dioxide
C water
D. More glucose
Answer:
b. carbon dioxide
Explanation:
This metabolic pathway is called the Krebs cycle after the scientist who first discovered it in 1937. The Krebs cycle is further broken down by pyruvic acid, obtained in the glycolysis process. The process proceeds in two stages. The first is the degree of decomposition of the bicarbonate residue.
The Krebs cycle is the main metabolic pathway for the breakdown of organic matter and the production of energy in the form of reduced coenzymes, which will then be incorporated into ATP.
Which of the following does not contribute to erosion?
O Lava
Olce
O Wind
O Water
which statement describes a possible effect of climate change
Answer:
Where is the question??
Explanation:
Add an attachment
For each of the following nitrogenous base sequences, write the complimentary sequence on the line provided.
a) A – T – C – C – T – A – G – A – A – G – G – T __________
b) C – G – T – T – G – C – A – G – A – A – C – T __________
c) T – A – C – G – G – A – T – C – G – T – C – A __________
1. Consider the membranes illustrated in Model 1. Circle a section of the mitochondria below
where this site might be located.
Answer:
Mitochondria is the power house of the cell.
Explanation:
Mitochondria are double membrane cell organelles. They are mostly found in the eukaryotic organisms. They are a source of power house of the cell. They help in powering various biochemical reaction of the cell by generating chemical energy.
They are found in the body cells.
The electron transfer chain is mainly located at the inner mitochondrial membrane. At the inter-membrane spaces of mitochondria, higher concentration of hydrogen are found.
Please explain what osmosis is?
Answer:
osmosis is a special type of diffusion that is the movement of WATER particles from an area of high concentration to and area of low concentration across a semi-permeable membrane
Explanation:
Which image best represents an animal exhibiting kinetic energy?
Answer:
The answer is D. Cheetah
Explanation:
I got it right on edge
The image best represents an animal exhibiting kinetic energy is cheetah given in image four. Thus, option D is correct.
What will be the speed of the cheetah?The cheetah's speed
Kinetic energy is calculated according to the following equation
K.E = 1/2 mv square
where m represents the mass of the body in kilograms
and v represents the magnitude of the velocity which is know as speed of the body in m/s. Knowing this then, the scientist needs two things from that list the cheetah's amount of matter (also known as the mass) the cheetah's speed. If a cheetah ran 196m is 8 seconds, then 196/8 = 24.5 meters per second.
This answer sounds the most logical because the cheetahs would become more sustained with more prey, leading to healthier cheetahs and more breeding. In conclusion, their capacity would most likely increase.
Knowing this then, the scientist needs two things from that list the cheetah's amount of matter (also known as the mass) the cheetah's speed. If a cheetah ran 196m is 8 seconds, then 196/8 = 24.5 meters per second.
Therefore, The image best represents an animal exhibiting kinetic energy is cheetah given in image four. Thus, option D is correct.
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List the 3 things acceleration does.
Answer:
a change in velocity, a change in direction, or a change in both velocity and direction.
The exchange of carbon dioxide and oxygen during Photosynthesis and cellular respiration worldwide helps to keep atmospheric oxygen and carbon dioxide at what level
Answer:
Stable levels....Explanation:
The exchange of carbon dioxide and oxygen during photosynthesis (Figure below) and cellular respiration worldwide helps to keep atmospheric oxygen and carbon dioxide at stable levels. Cellular respiration and photosynthesis are direct opposite reactions.
hope it helps youpls mark me as branliestWhich of the following can cause the extinction of a species?
climate change
catastrophic events
interactions with other species
human activities
Answer: human activities
Explanation:
The aircraft in the picture above possesses potential and kinetic energy.
True
False
Answer:
True
Explanation:
Answer
True
Explanation:
HELP PLS ASAP!!!!!!!
Answer:
bruh I'm so confused! I have been staring at this question for years and my brain cells are gonna I'm so sorry! I wish I could help!
what is a cell membrane?
Answer:
The cell membrane is the semipermeable membrane of a cell that surrounds and encloses its contents of cytoplasm and nucleoplasm.
Explanation:
Answer:
Short. The semipermeable membrane surrounding the cytoplasm of a cell.
Long. The cell membrane is the semipermeable membrane of a cell that surrounds and encloses its contents of cytoplasm and nucleoplasm. The cell membrane separates the cell from the surrounding interstitial fluid, the main component of the extracellular fluid.
Explanation:
A group of students studied heat transfer by placing a hot block of metal into a Styrofoam cup of room temperature water what method of heat transfer with the student studying
Radiation
Convection
Conduction
Thermal energy
Answer: Thermal Energy
Explanation:
i worked it out tell me if im right
Method of heat transfer which is being studied by the student is thermal energy.
What is thermal energy?
Thermal energy is defined as a type of energy which is contained within a system which is responsible for temperature rise.Heat is a type of thermal energy.It is concerned with the first law of thermodynamics.
Thermal energy arises from friction and drag.It includes the internal energy or enthalpy of a body of matter and radiation.It is related to internal energy and heat .It arises when a substance whose molecules or atoms are vibrating faster.
These vibrating molecules and atoms collide and as a result of which heat is generated in a substance , more the collision of particles , higher is the thermal energy. There are 3 types of thermal energy 1) conduction 2) convection 3) radiation
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A mass of 25kg is acted on by two forces, one which is 15 N due east while the second one is 10N due north . The acceleration of the mass is.
The acceleration of the mass is 0.72m/s²
According to Newton's law of motion;
[tex]\sum F = ma[/tex]
Given the following parameters
mass m = 25kg
Get the resultant force
[tex]\sum F=\sqrt{10^2+15^2}\\\sum F = \sqrt{100 + 225}\\\sum F=\sqrt{325}\\\sum F= 18.03N[/tex]
From the formula:
[tex]a=\frac{\sum F}{m}\\a= \frac{18.03}{25}\\a= 0.72m/s^2[/tex]
Hence the acceleration of the mass is 0.72m/s²
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as the hare population increases there is in increase in the lynx population explain why this occurs
Answer: The lynx population increases as the hare population increases because there are more prey for the lynx to eat. The Lynx population also increases because there is more food for them to eat. What does the increase in the lynx population lead to? It leads to a decrease in the hare population because the lynxes were eating the hares. What happens to the lynx population when the hare population goes up? Continued predation due to high populations of lynx and other predators increases the hare population decline. ... As hare numbers start to decline, lynx continue to eat well because they can easily catch the starving hares. When hares become scarce, lynx numbers also decline.
Hope this helps........ Stay safe and have a Merry Christmas!!!!!!!!! :D
The changes in the population of one species can have a significant impact on the population of another species within the same ecosystem. Therefore, when hare population increases, there is in increase in the lynx population as well.
What is predator-prey cycle?A predator-prey cycle is a cycle where if the prey population increases in size, it leads to an increase in predator population size due to availability of more food.
The relationship between the hare and lynx populations is a predator-prey dynamics. When the hare population increases in size, the lynx population also increases due to availability of more food.
When there are more number of hares, the lynx hunts them more easily which causes an increase in lynx population. However, the increase in lynx population leads to more consumption of hares, that leads to decrease in the hare population. With fewer hares available, the lynx population then starts to decline leading to a cyclical pattern of population growth and decline.
Therefore, this type of relationship is a predator-prey cycle which describes changes in the population of one species can have a significant impact on the population of another species within the same ecosystem.
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A student observes that a plant has droopy leaves and stems and infers that the rate of photosynthesis has slowed in the plant. Which statement provides evidence to support the student’s inference?
Answer:
A. The water pressure in the plant's vacuole is low, and without water, the chloroplasts cannot convert carbon dioxide to glucose during photosynthesis.
Explanation:
Photosynthesis occurs on chloroplasts which are located on the surface of leaves. Photosynthesis is the conversion of carbon dioxide, water, and light energy to produce glucose and oxygen for plants.
The vacuoles inside the plant's cell contain stored food and absorb water through osmosis. Water in the vacuole has more solutes than water outside the vacuole. This causes the Turgor Pressure which the vacuole impacts on the plants. If the reverse becomes the case, water is lost from the vacuole causing it to shrink.
Flaccidity of the vacuole and the cell wall will cause the chloroplasts where photosynthesis occurs to shrink.
What effect does the Earth spinning on its axis have on winds and currents?
The density of the water is increased causing the water to sink, forming deep ocean currents.
B) Global winds will move along a curved path and therefore cause ocean currents to curve.
Global winds will move along a straight path and will have no effect on ocean currents.
The moon's gravitational pull on the Earth is increased, causing water to move up the coast.
Answer:
B) Global winds will move along a curved path and therefore cause ocean currents to curve.
Explanation:
Earth rotation can be defined as the amount of time taken by planet earth to complete its spinning movement on its axis.
This ultimately implies that, the rotation of earth refers to the time taken by earth to rotate once on its axis. One spinning movement of the earth on its axis takes approximately 24 hours to complete with respect to the sun.
Basically, the effect of the Earth spinning on its axis have on winds and currents is that Global winds will move along a curved path and therefore cause ocean currents to curve. As a result of the Earth's rotation on its axis, a phenomenon known as Coriolis effect arises. Coriolis effect occurs when circulating winds are deflected to the left in the southern hemisphere and to the right in the northern hemisphere.
Hence, rather than have this air circulating in a straight pattern, it is deflected to the left of the southern hemisphere and to the right of the northern hemisphere, typically in a curved path or pattern.
In the two step cellular process of transcription and translation
(A) chromosomes line up and then are pulled to opposite ends of the cell.
(B) stem cells develop in embryonic cells, which then form adult tissue cells.
(C) the DNA double helix is separated and then replicated to form two strands of DNA.
(D) a DNA sequence is copied to form an RNA sequence, and then copied to form a protein.
Answer:
The answer is D
A is cell division, B is some stage of pregnancy, and C is DNA replication.
Based on this pedigree, it is most reasonable to conclude that Becker muscular dystrophy is which of
the following?
It is a sex-linked recessive trait since only men seem to be affected
there are the same number of these two particules in an atom? What is it