Answer:
A - “Fertilization requires two Haploid cells.
Explanation:
“Fertilization requires a haploid sperm and a haploid egg”.
Both A and B are true about fertilization and homologous chromosome. Therefore, option (D) is correct.
What is fertilization?Fertilization is the process of combining the genetic material of two sexually reproducing organisms to produce a new individual.
In animals, fertilization typically involves the fusion of a sperm cell and an egg cell, also known as gametes. The sperm cell is produced by the male and carries a single copy of each chromosome, while the egg cell is produced by the female and also carries a single copy of each chromosome. When the sperm fertilizes the egg, the resulting zygote has a complete set of chromosomes, with one copy inherited from each parent. The zygote then goes through a series of cell divisions to develop into a full-fledged organism.
In plants, fertilization typically involves the fusion of two gametes produced by the male and female reproductive organs of the plant. The resulting zygote develops into an embryo, which grows into a new plant.
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The mineral graphite is used in pencils. What is the characteristic that allows it to be used for this purpose? *
1 black streak
2 hardness of 1-2
3 both are correct
¿In which stage of mitosis do cell spend the most time?
Answer:
Can you add the answers please and thank you but i say b
Explanation:
THIS QUESTION IS DUE IN 10 MINUTES I NEED HELP PLEASE ASAP
Define the term enzyme. Describe how enzymes influence metabolic reactions in the cell.
Answer:
Some enzymes help to break down large nutrient molecules, such as proteins, fats, and carbohydrates, into smaller molecules. Each enzyme is able to promote only one type of chemical reaction
Explanation:
The compounds on which the enzyme acts are called substrates
I try my best
9. Why is the law of conservation of mass true?
a. All atoms at the start of a chemical reaction are present at the end of the reaction.
b. All the molecules in a substance remain intact during a chemical reaction.
c. The substances at the start of a chemical reaction gather more atoms to make up
for those lost in the reaction.
d. All molecules at the start of a chemical reaction are present at the end of the
reaction
Answer:
I think it's D but I'm not too sure. Let me know if it's correct !
During the process of photosynthesis, which of the following is being created by producers
Which statement correctly describes the bonding between water molecules? A. The hydrogen atoms have a partial positive charge and are attracted to the oxygen atom in another molecule, which has a partial negative charge. B. The hydrogen atoms have a partial negative charge and are covalently bonded to the oxygen atom in another molecule, which has a partial negative charge. C. The hydrogen atoms have a partial positive charge and are covalently bonded to the oxygen atoms in another molecule, which have a partial negative charge. D. The hydrogen atoms have a partial negative charge and are attracted to the oxygen atom in another molecule, which has a partial negative charge.
Answer:
A. The hydrogen atoms have a partial positive charge and are attracted to the oxygen atom in another molecule, which has a partial negative charge.
Explanation:
I just took the quiz. That was the correct answer.
The hydrogen atoms have a partial positive charge and are attracted to the oxygen atom in another molecule, which has a partial negative charge. The correct option is A.
What is a hydrogen bond?A hydrogen bond or H-bond is an electrostatic attraction between a hydrogen atom covalently bound to a more electronegative "donor" atom or group.
Another electronegative atom weighing down a lone pair of electrons the hydrogen bond acceptor.
Since the electron is not shared evenly between a hydrogen atom and a negatively charged atom, hydrogen bonding occurs.
Hydrogen in a bond still has one electron, whereas a stable electron pair requires two electrons.
Hydrogen bonds form between adjoining hydrogen and oxygen atoms of adjacent water molecules in the case of water. A hydrogen bond is formed by the attraction of individual water molecules.
Thus, the correct option is A.
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A rainbow after a rainstorm is an example of what? What is the point of confusion?
Answer:
C
Explanation:
Answer:
This scrambling is what we call refraction. After scrambling interior the rain bead, the light bounces once until it at long last exits the bead and a rainbow is made.
_____ is caused by stress and is the bending, tilting and breaking of rock.
A person invested \$6,000$6,000 in an account growing at a rate allowing the money to double every 11 years. How much money would be in the account after 19 years, to the nearest dollar?
Answer: $19,866
Explanation:
We know that the initial investment is $6,000. And it doubles every 11 years.
Then after 11 years, the amount of money will be 2*$6,000
After another 11 years (a total of 22) the amount of money will be 2*(2*$6,000)
or $6,000*(2)^2
We already can see that this is an exponential growth equation.
After n times 11 years, the amount of money will be;
M = $6,000*(2)^n
But n represents groups of 11 years, then if y represents the number of single years, we can write the equation as:
M = $6,000*(2)^(y/11)
You can see that y = 11 is equivalent to n = 1
y = 22 is equivalent to n = 2
and so on.
Then the equation:
M = $6,000*(2)^(y/11)
Tell us how much money will be in the account after y years.
Now we only need to replace y by 19, to get:
M = $6,000*(2)^(19/11) = $19,866
Where i rounded the amount of money to the nearest dollar.
Which of the following statements about plankton or nekton is NOT correct?
a. Nekton are active swimmers.
b. Phytoplankton are important primary producers.
c. All plankton are closely related to plants.
d. Plankton drift or swim weakly.
e. Zooplankton are heterotrophic plankton.
Answer:
C. All plankton are closely related to plants.
Explanation:
Plankton are organisms found in water that exist in a drifting state. They are too small or weak to swim on their own, so they let the current or tide carry them. They are usually microscopic but include larger species as well, such as some crustaceans and jellyfish.
Phytoplankton are autothrophic plankton. This means that they produce their own food. They are primary producers and closely related to plants.
Zooplankton are heterotrophic plankton, which means that they feed on other organisms. They are animals and aren't closely related to plants.
Nekton are organisms found in water that swim actively.
Based on this information, we can conclude that statement C is the only incorrect statement.
What similarities do the three revolutions share?
Answer:
Revolutions do share common features, however. One is that they are fast-moving. In a short time, often just a few years, a revolution can bring about significant change and upheaval. Most revolutions are driven by people and groups inspired by hope, idealism and dreams of a better society.
What are the 4 principles of natural selection?
Why are some scientists studying the bacteria that live in the guts of termites?
O Those bacteria may contain genes that help plants take up toxins from the environment.
Those bacteria may contain genes that will help convert plant material to ethanol.
Scientists may use those bacteria as a type of fertilizer for corn and soybean fields.
Those bacteria may contain genes that make corn plants resistant to insects.
The answer is: Those bacteria may contain genes that will help convert plant material to ethanol. Hope this helps!!! :)
Some scientists are studying the bacteria that live in the guts of termites because those bacteria may contain genes that help convert plant material to ethanol.
What are termites?Termites are a type of insect that belongs to the order Isoptera. They are commonly known as white ants but they are not closely related to true ants. They are social insects and live in colonies or nests.
Termites are able to break down the cellulose in wood and other plant materials, which is a process that has potential applications in biofuel production. The bacteria that live in the termites' gut play an important role in this process by producing enzymes that help to break down the cellulose. Scientists are interested in studying these bacteria to learn more about the enzymes they produce and how they can be used to convert plant material into ethanol more efficiently.
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Identify the organelle *
1 point
Outer membrane
Inner membrane
Crista
Matrix
DNA
ma
O Ribosome
O Mitochondria
Ο Ο Ο Ο
Nucleus
O Chloroplast
Explanation:
Mitochondria
hope it helps u
he human stomach helps break down food for digestion. Which statement BEST describes the stomach?
A.
It is part of a cell with a specific function.
B.
It is a single cell that performs a life function.
C.
It is made up of a small number of cells that perform a single function.
D.
It is composed of millions of cells of several types working together to perform a function.
why would breeding year round favor natural selection?
Answer:
Only the strongest would survive each year and be able to breed
Explanation:
According to Darwin's theory of evolution if an animal were to be put into terrain whether local or new, the animal would need to adapt as its surrounding slowly change. If said animal is unable to adapt in time it will perish or be unable to produce strong offspring that will survive.
Some grass species need fire in order for their seeds to germinate. Why might this adaptation be useful for grasses? A. Fire allows trees to grow and to provide shade for the grasses.B. The hot temperature of the fire helps the grasses grow faster. C. Seeds can germinate in an area that has been cleared by a fire. D. Fire discourages grazing by large animal so the grasses can grow higher.
Answer:
D. Fire discourages grazing by large animals so grass can grow higher.
Explanation:
Fire allows trees to grow and provide shade for the grasses. ... Seeds can germinate in an area that has been cleared by a fire.
IT'S AN EMERGENCY PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!! PLEASE I NEED HELP ASAP PLEASE HELP!!!
This is the question
How do animal cells survive without chloroplasts? Explain
(This is 7th grade science)
1. Classify each of the following substance as organic or inorganic. Explain your
choice.
a) honey
d) CO
b) saran (plastic) wrap
e) orange juice
c) obsidian (volcanic rock)
1) water
How does using microbes and other bio-life forms help to remove contaminants from soil and groundwater?
A) It changes the chemical structure in reused contaminants.
B) It offers considerable promise for cleaning up contamination.
C) So far, it is the only risk-free method of removing contaminants.
D) It doesn't work at all.
Answer:
B.) It offers considerable promise for cleaning up contamination.
Explanation:
got it right on edge 2021 :)
Answer:
B) It offers considerable promise for cleaning up contamination.
Explanation:
edge :D
What is the probability that individual C-1 is Ww?
Answer:
100% or 1/1 or 1
Explanation:
all the same thing, i just took the AP bio chapter 14 test lol :)
Cell division is necessary for an organism to a. obtain nutrients b. grow and reproduce c. make proteins d. conserve matter and energy
Answer:
c. make proteins
Explanation:
.
What do chloroplasts and mitochondria have in common?
absorption of light energy
production of ATP
digestion of cell wastes
presence in all cells
what type of molecular movement requires energy
Answer:
When a molecule moves down its concentration gradient is it participating in passive transport; moving up the concentration gradient requires energy making it Answer:active transport
The number of protons determines the _____.
atomic mass
atomic number
atomic structure
atomic charge
Answer:
atomic number
Explanation:
the number of protons tell us the atomic number
What determines if a particle can cross a cell membrane? *
Answer:
Lipophilic (non-polar molecules), such as steroid hormones or O2 gas can pass... very small uncharged polar molecules (such as H2O, ethanol and urea) can also get through... otherwise you need a membrane protein to "facilitate" the transport of the molecule across the membrane, ion channels are used for water, or charged molecules; carriers/transporters are used for other molecules.
Chikungunya is caused by ____________.
Answer:
Mosquitoes
Explanation:
Chikungunya is a viral disease transmitted to humans by infected mosquitoes. It is caused by the chikungunya virus (CHIKV). A CHIKV infection causes fever and severe joint pain. Other symptoms include muscle pain, joint swelling, headache, nausea, fatigue and rash.
Which of the following features did whales possibly inherit from a four-legged ancestor?
1. gills
2. hip bones
3. blow hole
4. dorsal fin
Answer:
2. Hip bones
Explanation:
More than 40 million years ago, whales had ancestors who walked on land. Even now, they have a feature they inherited from them - hip bones. Scientists used to think that they are vestigial, i.e. that they lost their function. However, recently they discovered that these bones help whales (and other marine mammals who have them, such as dolphins) maneuver better mating.
Whales developed the rest of the listed features later, when they became marine animals. This is why they are incorrect.
Windy and rainy days are cold why
Given sin 0 = 4/5
use the Pythagorean Theorem to find the value of cos 0.
A) cos 0 = 3/4
B) cos 0 = 3/5
C) cos 0 = 4/3
D) cos 0 = 4/5
Answer:
cosθ = 3/5
Explanation:
Given that,
sinθ = 4/5
We need to find the value of cosθ.
We know that,
sinθ = P/H
Where
P is perpendicular and H is Hypotenuse
Using Pythagoras theorem to find base (b).
H²=P²+B², b is base
We have, H = 5, P = 4, B=?
b²=5²-4²
b=3
We know that, cosθ = B/H
Putting all the values,
cosθ = 3/5
Hence, the correct option is (b) "cosθ = 3/5".
