Answer: In humans, meiosis is the process by which sperm cells and egg cells are produced. In the male, meiosis takes place after puberty. Diploid cells within the testes undergo meiosis to produce haploid sperm cells with 23 chromosomes. A single diploid cell yields four haploid sperm cells through meiosis. In females, meiosis begins during the fetal stage when a series of diploid cells enter meiosis I. At the conclusion of meiosis I, the process comes to a halt, and the cells gather in the ovaries. At puberty, meiosis resumes. One cell at the end of meiosis I enters meiosis II each month. The result of meiosis II is a single egg cell per cycle (the other meiotic cells disintegrate). Each egg cell contains 23 chromosomes and is haploid. The union of the egg cell and the sperm cell leads to the formation of a fertilized egg cell with 46 chromosomes, or 23 pairs. Fertilization restores the diploid number of chromosomes. The fertilized egg cell, a diploid, is a zygote. Further divisions of the zygote by mitosis eventually yield a complete human being.
Answer:
In meiosis-II the separation of two chromatids occur so that equal number of chromatids (in fact chromosome due to duplication of genetic material) goes to each of the daughter cell. Thus, at the end of meiosis-II, four daughter cells are formed. Each cell has half the number of chromosomes present in the diploid cell.Feb
Explanation:
why are side effects important for a drug
Answer:
Because if you take a drug normally without any side affects, you might get VERY sick. ( DON''T TAKE DRUGS UNLESS YOUR DOCTOR GIVES YOU SOME)
Explanation:
What do you think is the reason for the similarities between the three mammal (the pig, monkey, and human) body segment forms (c) shown below?
What type of cell is this ?
1. Animal
2. Plant
Answer:
animal
Explanation:
Answer:
it is an animal cell .........true or false; It is warmer in July than in January because the earth is closer to the sun in July.
Answer:
false
Explanation:
it’s actually the other way around! it’s farthest from the sun in july and closest in january! so instead of it being the distance between the sun, it’s actually caused by the tilt of earths axis!
Answer:
false!
Explanation:
the sun is actually closets to earth in January and the farthest from earth in July!
Which population of frogs is likely to have more changes after many generations?
descendant Species 1: The frogs in the brown hills.
Descendant Species 2: The frogs in the green forest.
Both are equally likely to have changes in their structures.
Explain the reasoning for your answer
The population frogs in the brown hill will have more changes because they cannot camouflage to free in the brown hill,they will have to develop some traits or features that will help them adapt and live comfortably in the brown hill.
What is Population?Population refers to a group of living organisms of a particular species that can interbreed, living and interacting together at the same time in the same area.
Therefore, The population of frogs in the brown hill will have more changes because they cannot camouflage to free in the brown hill, they will have to develop some traits or features that will help them adapt and live comfortably in the brown hill.
Learn more about population below.
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( I don't understand this assignment and I'm scared to ask my family bc they might make me feel stup*d lol)
Watch the following video and write a scientific summary of your observations: https://youtu.be/jTSC4ntCPY4
Here are your goals for this assignment:
Observe and describe cheek cells
Summarize findings based on observations
Write a summary of your findings from this investigation. Be sure to include your personal observations as well as answering the questions below. (Answer all questions in full sentences.) Your summary should be 150 words or more.
What did you see in the microscope? Be specific and describe as a scientist would.
Did you see more than one cell in the microscope? How many?
Was the cell structure clearly visible? Describe it.
Could you make out any cell components? Which ones?
What did you find out from this investigation? Write a paragraph about your findings.
1, the cheek cell looks like a germ/bacteria and contain nucleus and other organelles.
2, In the microscope I see cheek cells just magnified.
3, No just cheek cells
4, no the cell was not that visible until he zoomed in
no
I found out the cheek cells are disgusting and should never lick them with my tongue.
Answer:
1. I don't have a microscope, the cheek cell looks like a germ/bacteria and contains a nucleus and other organelles.
2. In the microscope I saw several cheek cells, some clumped together, some separate.
3. Not really, they didn't have a pronounced shape.
4. No the cell was not that visible until he zoomed in
5. Not possible
The cheek cells grossed me out, the shape, and color. I found it weird to know that those cells are on our bodies. I honestly didn't learn much about them though.
I hope this helps! :)
Best sights= 15 points + Brainliest
I need study sights that can help me study for science final exam
Using careful observation, describe at least two differences between these two limbs. Start with the hand bones.
The wo differences between the hand bones of human and cat limbs are- Number of digits: Human hands have five digits (four fingers and a thumb), while cat paws have four digits. This difference in digit number is due to evolutionary adaptations that have occurred in the two species over time.
What are limbs?Limbs are the appendages of the body that are used for movement and manipulation. In humans and most animals, limbs typically consist of bones, muscles, tendons, ligaments, and other connective tissues that work together to produce a wide range of movements and actions.
Shape and size of bones: The bones in human hands are relatively long and slender, with distinct shapes and sizes for each digit. In contrast, the bones in cat paws are shorter and thicker, and the digits are more uniform in shape and size.
This difference in bone structure reflects the different functions of human hands and cat paws, as human hands are adapted for manual dexterity and fine motor control, while cat paws are adapted for hunting and climbing.
It's important to note that there are many other differences between human and cat limbs, including the structure and function of muscles, tendons, and ligaments, as well as the range of motion and flexibility of the joints.
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Use the picture to match the numbered label to the name of the organelle that it is pointing to.
Answer:
23- Vacuole
24-Centrosome
25-Nucleus
26-Cytoplasm
27-Chloroplast
28-Cell wall
29-Cell membrane
Two students are comparing scientific experiments to investigations. They came up with the following ideas.
Student A: Testing plant growth in different types of soils
Student B: Comparing the water level in a lake during different times of the year
One student gave an example of an Avestigation and the other gave an example of an experiment. Which student gave an example of a
scientific investigation? (5 points)
A. Student A because it requires a hypothesis
B. Student B because it requires a hypothesis
C. Student A because it can be done in natural settings
D. Student B because it can be done in natural settings
Answer:
A. Student A because it requires a hypothesis
3. Which statement describes starches, fats, proteins, and
nucleic acids?
A) They are used to store genetic information.
B) They are complex molecules made from smaller
molecules.
C) They are used to assemble larger inorganic
materials.
D) They are simple molecules used as energy
sources.
Answer:B
Explanation: Because if u Look at Protein Carbohydrates Nucleic acid and fatty acid actually they are polymers made up of small units called monomers.Option C is incorrect because these are organic molecules containing carbon so we cannot say that it will form an inorganic structures and the other option says about genetic information so genetic information is only determined by Nucleic acids not fatty acid, Protein or Carbohydrates and last option D is incorrect because nuclei acid didn't provide energy.
The statement which describes starches, fats, proteins and nucleic acids is they are complex molecules made from smaller molecules. So, the correct option is (B).
What are Nucleic Acids ?Nucleic acids are naturally occurring chemical compounds that break down to form a mixture of phosphoric acid, sugars, and organic bases (purines and pyrimidines). Nucleic acids are essential data-transmitting molecules of the cell, and, as they also direct the course of protein synthesis, they control the inherited characteristics of living things.
The two essential categories of Nucleic acids are Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA). DNA is the master prototype for life and contains genetic material in all free-living organisms and various viruses.
RNA is the genetic material of some viruses. It is also found in all living cells which plays an important role in certain processes like making proteins.
Thus, the statement which describes starches, fats, proteins and nucleic acids is they are complex molecules made from smaller molecules. So, the correct option is (B).
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NEED ASAP PLS HELP
NO LINKS OR I WILL REPORT
NO UNESSECARY ANSWERS OR I WILL REPORT
WILL MARK BRAINLIEST
The circulatory system is responsible for all of the following EXCEPT:
A.
Transporting nutrients throughout the body to cells that require it
B.
Circulating metabolic waste such as carbon dioxide away from cells that no longer need it
C.
Excreting urine from the body
D.
Working with the respiratory system to circulate oxygen and carbon dioxide throughout the organism
Thank you and have a great rest of your day!
Answer:
C
Explanation:
C is what the circulitory system dosent do so its C :) Sorry, i sent this a bit late.