Answer:
B
Explanation:
The answer is B because animals have small vacuoles and no chloroplast while plants cells have chloroplast, a large vacuole, a rigid cell wall.
what directs the changes that occur in allele frequency
a. natural selection
b. random mutations
c. hox genes
Answer:
I think it's b - random mutations... >3
A change in allele frequency is directed by natural selection. So the correct answer is option A.
What is meant by allele frequency?The allele frequency (also known as gene frequency) refers to the frequency at which a particular allele appears in a population. The term evolution in population genetics refers to a variation in the frequency of a particular allele within a population. The frequency ranges from 0 (zero alleles present in no individuals) to 1 (all alleles present in all individuals). The gene pool refers to the sum of all alleles at all the genes in a population.
Natural selection affects the phenotype, or observable characteristics, of an organism. Phenotype is usually largely determined by genotype (the number of alleles, or versions of genes, that an organism carries).
When the phenotype produced by specific alleles helps an organism survive and multiply better than its neighbors, natural selection can spread the beneficial alleles from generation to generation – in other words, it causes microevolution.
To learn more about natural selection refer to the link: https://brainly.com/question/9830102
#SPJ3
Compare the movement of oxygen and carbon dioxide across the cell membrane
"As oxygen-rich (and carbon dioxide-poor) blood travels by a cell the oxygen diffuses through the cell membrane to the area of lower concentration inside the cell. ... Because the CO2 is of a higher concentration in the cell than in the blood passing by, this gas continually diffuses out of the cell."
Use the codon chart to determine the amino acid that the following mRNA sequence would code for.
mRNA sequence: AUG
Answer:
aug = met, which stands for methionine
Answer:
AUG is the start of the codon
Explanation:
share with me your online class link, I will raid.
Census data show that the human population doubled from 2.65 billion in 1953 to 5.3 billion in 1990. If it continues to double at this rate, the human population could reach 10 billion by the year 2020. Which best explains how this rate of human growth can harm the environment on which humans depend?
The question is incomplete, the complete question is;
Census data show that the human population
doubled from 2.65 billion in 1953 to 5.3 billion
in 1990. If it continues to double at this rate,
the human population could reach 10 billion
by the year 2020. Which BEST explains how
this rate of human growth can harm the
environment on which humans depend?
A. by gradually making up more available energy
B. by using resources faster than they can be
replaced
C. by changing how matter cycles through an
ecosystem
D. by increasing the variety of ecosystems that are
Answer:
by using resources faster than they can be
replaced
Explanation:
As population of the world continues to grow, there is greater demands for resources which are obtained from the environment such as crude oil for energy, solid minerals for various applications, wood for furniture etc.
Demand for these materials increase exponentially as population increases thus they are extracted at a faster rate than nature can replace them. This will eventually harm the environment on which humans depend as population increases.
PLEASE HELP PLSSS I need just answer fast
Answer:
A
Explanation:
BECAUSE IT HAPPENS DURING MENSTRUAL CYCLE
Answer:
The sudden increase in lh hormone
Explanation:
In women, ovulation of mature follicles on the ovary is induced by a large burst of LH secretion - the preovulatory LH surge.
8. Which type of fossil shows evidence of evolution?
O imprint fossils
O trace fossils
O transitional fossils
O mold fossils
In a predator prey graph, the peak for the predator population always comes after the peak for the prey
population. Why do you think this happens?
60 predator prey grap populationin the peak.
The products of photosynthesis (glucose and oxygen) are used in cellular respiration. The products of cellular respiration (water, and carbon dioxide ) are used in photosynthesis.
A. True
B. False
Answer:
True
Explanation:
This is true because the cycle goes to Oxygen Glucose then Cellular Respiration to Carbon Dioxide Water then to photosynthesis. This cycle is like this because Photosynthesis converts carbon dioxide and water into oxygen and glucose. All in a cycle :)
Answer:
A. True
Explanation:
Yes, the products of photosynthesis are used in cellular respiration. The products of cellular respiration are used in photosynthesis.
Select the correct answer from each drop-down menu.
The pancreas is an accessory organ whose function aids the chemical digestion of food.
If the pancreas fails to make
, it will inhibit the action of enzymes and affect chemical digestion. Also, might damage the small intestine walls.
Answer:
I dont know the first one but the last one is acidic chyme. Hydrochloride is what I put as the first and its wrong, acidic chyme is right as the second one.
Explanation:
Answer:
First one: Bicarbonate Ions
Second one: Acidic Chyme
Explanation:
...
Arrange the following in order, from smallest to largest and define each and give an example of each:
A. Ecosystem
B. Population
C. Biome
D. Organism
E. Community
What is the purpose of a conclusion?
Answer:
The function of your paper's conclusion is to restate the main argument. It reminds the reader of the strengths of your main argument(s) and reiterates the most important evidence supporting those argument(s).
Explanation: step-by-step mark most brainliest pls
The variable h represents the number of hours spent doing yard work and the variable d represents the amount of money earned how many hours spent doing yard work and the variable d represents the amount of money earned how many hours in all will it take Whitney to earn 15$
Answer:
[tex]4\frac{1}{11}[/tex] hours
Explanation:
Given
See attachment for graph
First, we determine the equation of the graph.
Pick any two points from the graph
[tex](h_1,d_1) =(18,168)[/tex]
[tex](h_2,d_2) =(36,366)[/tex]
Calculate the slope (m)
[tex]m = \frac{d_2 - d_1}{h_2 -h_1}[/tex]
This gives:
[tex]m = \frac{366 - 168}{36 -18}[/tex]
[tex]m = \frac{198}{18}[/tex]
[tex]m = 11[/tex]
The equation is then calculated as:
[tex]d = m(h - h_1) + d_1[/tex]
This gives:
[tex]d = 11(h - 18) + 168[/tex]
Open bracket
[tex]d = 11h - 198 + 168[/tex]
[tex]d = 11h-30[/tex]
So, the number of hours to earn $15 is:
[tex]d = 11h-30[/tex]
[tex]15 = 11h -30[/tex]
Collect like terms
[tex]11h = 15 + 30[/tex]
[tex]11h = 45[/tex]
Solve for h
[tex]h = \frac{45}{11}[/tex]
[tex]h = 4\frac{1}{11}[/tex]
Which of the following are positively charged?
1. The proton
2. The electron
3. The alom
4. The nucleus
A) 1 and 2
B) 2 and 3
C) 3 and 4
D) 1 and 4
Answer:
D
Explanation:
Proton: positive charge
Electron: negative charge
Neutron: neutral charge
There are protons and neutrons in the nucleus, so there will always be a positive charge in the nucleus
why would scientists may want to know if two plant species are closely related.
Answer:
- Two related plants may produce similar substances that could be used for medicines. - A related plant may provide a cheaper source of a substance. - If a plant becomes extinct, a related plant may provide an alternative source of a substance.
(No Explanation)
The intense heat from Earth's interior is called _____________________ energy.
Answer:
it's called geothermal energy
Another term for the light-independent reactions of photosynthesis.
A. The Calvin Cycle
B. Cellular respiration
C. The nitrogen cycle
Answer:
A. The Calvin Cycle
Explanation:
The Calvin Cycle is the another term for the light-independent reactions of photosynthesis.
Can someone help me if this is correct
Answer:
I think B because when you digest you release waste, you absorb nuitreunts from it, and you make proteins for energy.
The diagram below represents a reproductive process.Which reproductive process is represented by the diagram?
Answer: Asexual Reproduction
Explanation:
The diagram below represents meiosis a reproductive process, used for the development of gametes, hence option B is correct.
What is meiosis?It is the cell cycle stage in which the chromosome number of the parent cell gets reduced in the daughter cell, it is used to produce haploid gametes.
While mitosis is the cellular stage in which diploid organisms are used to increase the cell numbers of somatic cells it does not generally occur in germ cells of humans. As similar to mitosis asexual reproduction also produces identical cells.
Meiosis proceeds in the germ cell, where diploid organism produce haploid cells which are fertilized to form the diploid zygote.
Therefore, the given diagram in the question represents the meiosis reproductive process.
Learn more about meiosis, here:
https://brainly.com/question/29383386
#SPJ6
The white fur of a polar bear is an example of a:
A. Structural adaptation
B. Behavioral adaptation
C. Functional or physiological adaptation
Answer:
the answer is A
The bears fur is white to help it blend in and keep warm. suitable for the environment it lives in
Answer:
A. Structural adaptation
Explanation:
The white fur of a polar bear is an example of a: Structural adaptation
When cells join together, what is formed?
A. Tissue
B. Organs
Answer:
A. Tissue
Explanation:
The cells join together to form tissues. So, option (A) is the correct answer.
Answer:
A. Tissue
Explanation:
Just as cells join together to form tissues
A biological process is represented in the diagram below. Which of the following concepts does the diagram best illustrate
Answer:
in sexual reproduction the offering we see the same number of chromosome from each parent
which food group is the best source of protein from the food pyramid please help
Answer:
Meat is a major source of protein, as well as iron, zinc, and vitamin B12. Meats, poultry, and fish include beef, chicken, pork, salmon, tuna, shrimp, and eggs. The meat group is one of the major compacted food groups in the food guide pyramid.
Explanation:
Your welcome!
Brainlist Please! :)
44. During pregnancy, the process of ovulation is prevented by the
hormone called
A. progesterone
C. folicle stimulation hormone
B. testosterone
D. luteinizing hormone
Testosterone is the correct answer.
1. Se quiere identificar un organelo específico, que se encuentra en un cultivo celular. Para ello se utilizan técnicas apropiadas de laboratorio, determinando lo siguiente:
1. i. Es endomembranoso
2. ii. Tiene relación directa con el núcleo
3. iii. Envía vesículas dirigidas hacia el aparato de gogli
Según dicha información, es correcto inferir que corresponde a:
A. Peroxisomas
B. Retículo endoplasmático rugoso
C. Mitocondria
D. Cloroplasto
E. Ribosomas
Respiration is the process that uses___
and___
to obtain cellular
energy.
water and oxygen
glucose and water
oxygen and glucose
carbon dioxide and glucose
How does being hydrophobic affect protein folding?
Answer:
The hydrophobic effect is considered to be the major driving force for the folding of globular proteins. It results in the burial of the hydrophobic residues in the core of the protein. It is exemplified by the fact that oil and water do not mix and was described well by G. S. Hartley in 1936 .
Name one of the people who's work contributed to Darwin's Theory of Natural Selection. In 2-4 sentences discuss that individuals work. In another 1-2 sentences who did that individuals work contribute/ relate to Darwin's Theory..
Answer:
Jean Baptiste Lamarck
Jean Baptiste Lamarck
His work inspired Darwin's ideas of natural selection. Lamarck also came up with an explanation for vestigial structures. His evolutionary theory was rooted in the idea that life started out very simple and developed over time into the complex human form
Explanation:
Little hope of helping you
PLEASE ANSWER QUICKLY -
Which is most likely a covalent compound?
A - LiF
B - MgS
C - NH3
D - CaCl2
Answer:
NH3 would be my best guess
Explanation:
"NH3 is a covalent bond. This is because, Nitrogen and Hydrogen have shared the electron. The main difference between an ionic and covalent bond is ionic bond will donate or accept electron."
source: https://www.quora.com/Is-NH3-an-ionic-compound#:~:text=NH3%20is%20a%20
What subatomic particles make up the nucleus of an atom? Check all that apply.
neutrons
electrons
protons
subatomic particles are not found in the nucleus
Answer:
• neutrons
• protons
Explanation:
The nucleus is made up of two types of subatomic particles, that is the protons and neutrons.
Answer:
neutrons and protons
Explanation:
