1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maria [59]
3 years ago
8

Explain how many cells are produced from one fertilised egg, after two cell divisions by mitosis

Biology
1 answer:
nikklg [1K]3 years ago
4 0
Human sperm and eggs contain 23 chromosomes. Human zygotes contain 46<span> chromosomes. The type of cell division that produces gametes with half the normal chromosome number is called meiosis. It is used to produce cells for repair and asexual reproduction.</span>
You might be interested in
How does molecular genetics add to our understanding of genes?
Anna71 [15]
It helps us know the genetics of genes. 
8 0
3 years ago
You are growing yeast cells in a culture. After a few days of consistent growth, you notice that cell growth has slowed consider
BigorU [14]

The correct answer is C) There is not enough oxygen in the culture medium. This is because of alcoholic fermentation, and anaerobic process where the yeast transform sugar (glucose) in ethylic alcohol (ethanol) and carbon dioxide. Glucose is decomposed into pyruvic acid which then after turns into CO2 and ethanol. The bubbles described, are produced by the carbon dioxide.

The yeast, as well as some bacteria, use the glucose molecule through "glycolysis"  to obtain a 3-carbon molecule called pyruvates. Glycolysis consists of 10 coupled reactions, in the end, from one glucose (6 carbons) the yeast will obtain two pyruvates (3 carbons each).

Pyruvate can follow three main routes to obtain ATP, end up as lactate, as carbon dioxide (CO2) and water or as ethanol (alcohol) and CO2. Regarding yeast, it can only be used to obtain Ethanol plus CO2 or to obtain CO2 plus water.

The path that follows from here depends on the reaction medium. The cell gets much more energy (38 molecules of ATP) by converting pyruvate into water + CO2 than by turning it into ethanol + CO2 (2 molecules of ATP). Then, whenever possible, the yeast will follow the CO2 + water path. To support this route the cell needs oxygen.  In this case, the cell obtains its energy by breathing when there is no oxygen available, the yeast has a way that allows it to gain much less energy but allows it to survive, the alcoholic fermentation, previously mentioned.

Therefore, A, B, and D answers are wrong for the reasons mentioned above.


8 0
3 years ago
WILL GIVE THE BRAINLEST <br><br>Explain why the answer you chose is correct.​
S_A_V [24]

A chloroplast are used for the process of photosynthesis which makes food

4 0
3 years ago
Why cant living cells use heat to provide the energy for their reactions ​
kramer

the reason why living cells cant use heat to provide the energy for their reactions ​is because not all living cells have heat and the heat could damage the natural qualities in proteins.

~batmans wife

4 0
4 years ago
Read 2 more answers
Cystic fibrosis is inherited with the autosomal recessive allele c. Individuals with the autosomal dominant allele C do not have
kvv77 [185]

Complete question:

Cystic fibrosis is inherited with the autosomal recessive allele c. Individuals with the autosomal dominant allele C do not have the disease. Jessica does not have cystic fibrosis but she has a brother with the disease. Her husband Jerry also does not have cystic fibrosis but has a sister with the disease.

A- What is the probability that Jessica carries the c allele?

B- What is the probability that Jerry carries the c allele?

C- What is the probability that Jessica and Jerry could have a child with cystic fibrosis?

Answer:

A) The probability that Jessica carries the c allele equals 2/3.

B) The probability that Jerry carries the c allele equals 2/3.

C) The probability that Jessica and Jerry could have an affected child is 1/9

Explanation:

Due to technical problems, you will find the complete question, answer, and explanation in the attached files.

Download pdf
4 0
3 years ago
Other questions:
  • Is energy used to create matter, or is matter used to create energy?
    10·2 answers
  • You have been collecting data to determine the average monthly temperature for a particular year. You have 30 samples recorded i
    6·2 answers
  • What happens during G2 phase?
    13·2 answers
  • Which kind of volcano is most likely to form from this plate movement ?
    7·1 answer
  • An organism is described as 2n = 48.A) How many chromatids per chromosome are in one meiotic cell during prophase 2?B) How many
    11·1 answer
  • Why is the theory of evolution important?
    9·2 answers
  • "ricin inhibits the functioning of ribosomes. What part of protein synthesis would be affected by ricin? What effect would this
    9·1 answer
  • Which type of molecule do whales use for energy storage and insulation?
    15·1 answer
  • What happens if cell cycle regulators don’t function properly
    14·2 answers
  • Exceptions to the Central Dogma of Molecular Biology"" What is biggest revolution? Violation of Central dogma--- How &amp;Why?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!