do fertilised eggs divide to form a foetus

Answers

Answer 1
For the first 12 hours after conception, the fertilized egg remains a single cell. ... During the first 8 or 9 days after conception, the cells that will eventually form the embryo continue to divide
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Related Questions

The sugar in RNA is, the sugar in DNA is
deoxyribose; ribose
glucose; deoxyribose
ribose; glucose
ribose; deoxyribose

Answers

Answer:

Last choice: ribose; deoxyribose

Explanation:

Ribose (otherwise known as D-ribose) is a sugar found in RNA (ribonucleic acid). It alternates with phosphate groups to create the “backbone” of the RNA polymer.

Deoxyribose (sugar in DNA) is one of the three components of nucleotides for DNA. Each nucleotide consists of a phosphate group and a nitrogenous base:  adenine, thymine, cytosine, guanine, and deoxyribose.

Glucose is a type of sugar which is a common and crucial energy source in living organisms and is often a component in various carbohydrates. Plants can create glucose by going through a process called photosynthesis, and once it's done with the process, they use the glucose (sugar) as their food for energy.

what is cell division?

Answers

Answer:

cell division is the process by which a living cell proliferates from one cell to two cells.

I hope this helps

Answer:

Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle

Explanation:

Kepler discovered that
have elliptical orbits.
moons
comets
planets

all of the above
Help please??

Answers

Answer:

all of the above

Explanation:

gravity makes a planet have a combination go straight yet go around the sun at the same time creating an ellipse

sciencefocus

The last option is tt and tt , im really confused on this one

Answers

Answer:

im pretty sure its the answer you have!

Explanation:

You transcribed DNA to make
and built a sequence of amino acids through

Answers

Answer:

You transcribe DNA to make mRNA and built a sequence of amino acids through translation.

Hope it helps!

PLS HELP
what reproductive process do bacteria use by forming two identical cells from one parent cell?

a. binary fission
b. fragmentation
c. vegetative propagation
d. fertilization

pls answer quick , i have a time limit and i need help

Answers

Answer:

A. Binary Fission

Explanation:

During binary fission, the chromosome copies itself, then it forms two genetically identical copies.

Based on the cell theory, which of the following is true?
O All cells are too small to be seen.
O All living things are made of cells.
OSmall organisms have more cells than large organisms.
Large organisms have larger cells than small organisms.

Answers

Answer:

all living things are made of cells

Answer:

all living things are made of cells

Explanation:

The first part of the cell theory states that all living things are made up of cells. Anything that’s alive, from bacteria to plants to humans, is composed of cells. And what are cells? The literal definition is a cell is a group of organelles surrounded by a thin membrane.

Which of the following is present in eukaryotes......
A) Cell wall B) Flagellum
C)Diploid nucleus D) membrane bounded organelles

Answers

D. membrane bounded organelles

Answer:

Membrane bounded organelles are present in eukaryotes..

Explanation:

hope it is helpful to

Which of the following statements about cardiac muscle is true? a. Cardiac muscle is like smooth muscle, because smooth muscle has a banded appearance. b. Cardiac muscle is like smooth muscle, because it contains no bands. c. Cardiac muscle contains bands like skeletal muscle, but its contractions are involuntary like smooth muscle. d. Cardiac muscle is like skeletal muscle, because skeletal muscle has involuntary contractions.

Answers

Answer:

c. Cardiac muscle contains bands like skeletal muscle, but its contractions are involuntary like smooth muscle.

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Cardiac muscle is also referred to as myocardium and it's one of the three (3) muscles found only in the heart of vertebrates, the other two (2) being smooth muscle tissue and skeletal muscle tissue.

Cardiac muscle contains bands like skeletal muscle referred to as sarcomeres (contractile units), but its contractions are involuntary like smooth muscle and it's typically being regulated by the sinoatrial node of the heart.

What is fermentation

Answers

Answer:

Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes.......I am sure this is helpful for you....And have you a great future.....study well plz....first you read your book.....

What causes an ionic bond to form between sodium and chlorine?

Answers

Answer:

The loss of an electron

Explanation:When sodium (Na) and chlorine (Cl) are combined, the sodium atoms each lose an electron, forming cations (Na+), and the chlorine atoms each gain an electron to form anions (Cl−

Answer:

"Sodium has 1 electron in its outermost shell, and chlorine has 7 electrons. ... If sodium can transfer it's "spare" electron to chlorine, both atoms will satisfy their full outer shell requirements, and an ionic bond will be formed."

Explanation:

Please list answers below!

Answers

8. B, 10 Million

9. A, 8 minutes

The part of the atom that carries a negative charge is the _____, and the part that carries a positive charge is the _____.

Answers

Answer:

electrons carry negative charge, protons carry positive charge

Can anyone help with this biology?

Answers

Answer:

B)

Explanation:

The answer is B, because as you go up in the trophic levels, energy is lost in the process.

Answer:

The best answer would be D, all of the above.

Explanation:

Option A counts since too much rats would be bad for plants since the plants will just die out, then no food for rats, so they die out, then snakes die out from not food, then eagles, you get it. If there's too much snakes, it's bad for rats and the rats die out, means the plants over populate, then no food for snakes, so they die out, etc. It's important to have such trophic system in any habitat.

Option B counts since not all energy is past down. Plants can get the most out of energy since all they do is collect it. Meanwhile animals can't since they're always on the move, meaning that energy is lost. This is why 10% of energy is lost on each level.

Option C counts since, well isn't it obvious? Look outside. You know, there's a lot of different trees, flowers, grass, etc. Now look at birds or insects. Not as much, but still pretty diverse. Then maybe look at cats or dogs. It's clear that it's less diverse. Then raptors and bears? Not very diverse, there's a few types like hawks, falcons, polar bears, but it's not very much.

So the best option would be D, all of the above.

what are hereditary materials​

Answers

Answer:

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA.

Answer:

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA.19-Jan-2021

please answer urgently​

Answers

Answer:

C- the enzyme is represented by the letter C

Explanation:

Jim has become particularly interested in the genetic basis of cancer and has spent considerable time reading published papers about oncogenes. He learned that as early as 1972 researchers suggested that mutations in proto-oncogenes caused by carcinogens can convert them to oncogenes. He asked you to answer a couple of questions about this because he did not have the biology background to totally understand. Jim learned that some cancer cells produce more growth-stimulating proteins than others. What would you give him as a plausible explanation

Answers

Answer:

Proto-oncogenes may have mutated to become oncogenes in these cells

Explanation:

Cancer cells are characterized by key properties such as an abnormally rapid rate and poor differentiation. Proto-oncogenes are genes that lead normal cells to become cancer cells when they are mutated. Many proto-oncogenes are involved in the control and progression of the cell cycle, and apoptosis (programmed cell death) pathway. Some examples of protooncogenes include 1-the Ras gene, which is required for differentiation, growth, and cell survival (mutations of this gene have been reported in pancreatic cancer, lung cancer, colon cancer and thyroid cancer), 2-the Myc gene (mutated in Burkitt's lymphoma), 3- the Her2 receptor (a receptor kinase associated with breast cancer), etc.

Whats the Independent variable for “Which Bait works best for a homemade fly trap?”

Answers

Answer:

The independent variable for "which bait works best for a homemade fly trap" if using the hypothesis of   "If I use the correct bait, then I will have a successful homemade fly trap" is the bait that you are going to use.

Explanation:

Using your "if, then" statement, the cause is called the independent variable and the effect is the dependent variable.

Hope this helps!

a ___ is made up of nonliving pieces of DNA or RNA wrapped in a protein shell.

Answers

A pathogen is made up of nonliving pieces of DNA or RNA wrapped in a protein shell.

Answer:

Virut

Explanation

Nhìn chung các loại virus bao gồm các phần cấu tạo sau:

- Lớp vỏ protein

- Bên trong là nucleic acid (DNA hoặc RNA).

- Một số loại virus có màng bao

Câu 6: Gà có 2n =78. Vào kỳ trung gian, sau khi xảy ra tự nhân đôi, số nhiễm sắc thể trong mỗi tế bào là:
A. 78 NST đơn. B. 78 NST kép. C. 156 NST đơn. D. 156 NST kép.

Câu 7: Ở người (2n = 46), số NST trong 1 tế bào tại kì giữa của nguyên phân là:
A. 23 NST đơn. B. 46 NST kép. C. 46 NST đơn. D. 23 NST kép.

Câu 8: Ở ruồi giấm, có bộ NST 2n = 8 vào kỳ sau của nguyên phân trong một tế bào có:
A. 8 NST đơn. B. 16 NST đơn. C. 8 NST kép. D. 16 NST kép.

Answers

Answer: 6A 7D 8B

Explanation:

DNA is very small, one complete turn of a DNA helix is about

O A. 12 nm
B. 3.4 nm
.cher
C. 1.7 nm
ok
D. 34 nm

Answers

your answer is option B.3.4

The answer is b (3.4)

A man is brachydactylous (very short fingers; rare autosomal dominant), and his wife is not. Both can taste the chemical phenylthiocarbamide (autosomal dominant; common allele), but their mothers could not. Give the genotypes of the couple. If the genes assort independently and the couple has four children, what is the probability of all of them being brachydactylous

Answers

Answer:

The correct answer is -

A) BbTt x bbTt

B) .5^4 or 1/16 or 0.0625

Explanation:

As it is given that Brachydactylus and PTC tasters both traits are autosomal dominant conditions which mean only one allele would be enough.

For Branchydactylus and For tasting :  man and women will be heterogeneous.

Hence,

The Genotype of man = BbTt

The Genotype of wife = bbTt

b. Answer = 0.0625

For Branchydactylus:

Bb X bb

Possible genotypes:

B b

b Bb( Brachydactylus) bb(normal)

b Bb (Brachydactylus) bb (normal)

The probability of a single child being Branchydactylus = 2/4 = 0.5

So,  Probability of all 4 child being Branchydactylus = .5 x .5 x .5 x .5 = 0.0625

plz it will help me alot​

Answers

Answer:

Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma.

Explanation:

Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma are the ways from which health should be affected by happening of natural disasters such as earthquake and cyclones. We are able to predict the weather with the help of satellites that monitors the movement of clouds on the earth atmosphere. Advancement of technology is the main reason which enable us to predict the weather conditions as well as the coming of cyclones in a specific region.

A researcher is designing a laboratory experiment to determine whether the inorganic substance A affects the rate of a reaction between two colored liquids,X and Y. When the reaction is complete, the liquid is clear. The reaction between X and Y is similar to one used by manufacturers to produce certain chemicals in factories

Which method would best answer his question about reaction rate and what will he find out about substance A

Answers

first he should measure how long it takes for the liquid to become clear if X and Y are mixed together. Then he should measure how long it takes if he also adds substance A to X and Y. He will find out if substance is a catalyst

Gangguan pada sistem pencernaan sering kali terjadi karena kebiasaan buruk, seperti pola makan yang tidak teratur dan sembarangan. Salah satu dampak dari kebiasaan buruk yaitu penyakit maag atau gastritis. Coba jelaskan oleh Anda mengapa dapat terjadi?​

Answers

Answer:

i don't know answer of this question

Answer:

Periode yang lama tanpa makanan cenderung menyebabkan refluks asam, gastritis, dan asam lambung. Jumlah cairan pencernaan yang berlebihan dapat mengikis lapisan usus Anda dan menyebabkan bisul

una persona camina durante una hora y media y corre 4 km con velocidad constante ¿cuál era su velocidad en km/h y en m/s?​

Answers

La respuesta es: su velocidad es 2.66 km/h, equivalente a 0.738 m/s.

Explanation

Para conocer la velocidad de una persona que recorrió 4 km luego de caminar durante una hora y media es necesario dividir la distancia (en kilómetros) total en el tiempo (en horas). Entonces la operación sería:

4km/1,5h = 2.66 km/h.

Posteriormente, para convertir 2.66 km/h en m/s es necesario aplicar la siguiente formula

2.66 km/h *(1000 m/1 km)*(1 h/3.600 s) = 0.738 m/s.

9. The organs which are incompletely developed (rudimentary) and generally non-functional or without any use are called vestigial organs. Which of the following is a vestigial organ? a. Intestinal villi b. Papillae c. Vermiform appendix d. None of the above​

Answers

Answer:

Vermiform appendix is answer maybe

Which of the following statements explains the importance of carbon in cells? (Choose all that apply)
Carbon affects the function of a cell.
Carbon is a waste product for a cell.
Carbon provides structure for a cell.
Carbon maintains the proper temperature in a cell.

Answers

C. I got the answer right on USA test prep work

Carbon can easily make bonds with other atoms, allowing biomolecules like DNA and RNA, which are crucial for the development and replication that characterize life, to take on a variety of shapes and functions. Thus, option C is correct.

What is importance of carbon in cells?

Carbon is an essential component for all living things. Due to its role in the production of numerous bonds and essential molecules in all living things, carbon is an important chemical.

Due to its unique chemical structure, carbon may combine with numerous other molecules to form a variety of compounds.

Because of its propensity to create stable bonds with other elements, including itself, carbon is the main component of organic molecules.

It makes up roughly 20% of an organism's weight and is necessary for them to survive, develop, and procreate.

Therefore, carbon provides structure for a cell.

Learn more about carbon here:

https://brainly.com/question/2695616

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Which of these organelles is NOT in animal cells?

Ribosome
Endoplasmic Reticulum
Cell Wall

Answers

Cell wall is not found in animal cells

Whch part of reproductive system produces semen​

Answers

The answer is Testicles (testes)
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