answer.
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
BlackZzzverrR [31]
2 years ago
5

Why a single ovum is produced by oogenesis

Biology
1 answer:
Tasya [4]2 years ago
7 0

Answer: The other ova become polar bodies.

Explanation: After meiosis I and II in oogenesis, there should be 4 eggs, but there aren't because the other eggs 3 eggs become these small cells called polar bodies that end up dying out through apoptosis. The reason why polar bodies are made is because they take out extra DNA that the single ovum is supposed to have.

So only 1 egg is made and the rest are polar bodies that get rid of extra DNA and then die by apoptosis.

You might be interested in
A calculated risk is intellectual in nature. <br> a. True <br> b. False
Anestetic [448]
The answer is a. True
3 0
2 years ago
Read 2 more answers
To store strawberries in sugar syrup, Lucy placed them in a jar and covered them with sugar but did not add any water. Do you th
LekaFEV [45]
<span>Yes . the sugar will melt over time to form syrup *</span>
8 0
2 years ago
A mutant strain of yeast is able to produce 2 ATP for each glucose molecule digested in the absence of oxygen. What makes this s
Free_Kalibri [48]

Answer:

Explanation:

Normally, under anaerobic condition in yeast, pyruvate produced from glycolysis leads to the production of ethanol as shown below.

pyruvate ⇒ acetaldehyde + NADH ⇒ ethanol + NAD

The pyruvate is converted to acetaldehyde by the enzyme, pyruvate decarboxylase. It should be NOTED that carbon dioxide is released in this step. The acetaldehyde produced in the "first step" is then converted to ethanol by the enzyme alcohol dehydrogenase. It must be noted from the above that the steps are irreversible.

If a mutated strain of yeast is unique because it does not produce alcohol and lactic acid (which is referred to as toxic acid in the question); thus having a high level of pyruvate because of the presence of a novel enzyme.   <u>The function of this novel enzyme will most likely be the conversion of acetaldehyde in the presence of carbondioxide back to pyruvate; thus making that step reversible</u>. This could be a possible explanation for the high level of pyruvate present in the yeast.

6 0
1 year ago
"Which statement best describes the method used above to determine the evolutionary relationships between three species of finch
kiruha [24]
The method used above involves the determination and comparison of the genes of the three species of finches. So, the answer is
<span>(3) Obtain molecular evidence from all three species and identify similarities.
</span><span>The genetic makeup of the three species will show different similarities that can be used to relate the evolution of the different species.</span>
5 0
2 years ago
How does light intensity affect oxygen production?
ZanzabumX [31]
Greater light intensity would mean a faster rate of photosynthesis in plants. photosynthesis takes in carbon dioxide and water to produce glucose and oxygen. therefore, a greater light intensity would mean faster oxygen production
4 0
2 years ago
Other questions:
  • Organisms that are well understood from a scientific standpoint and are often used in basic biological research are often called
    8·1 answer
  • PLS HELP ASAP WILL MARK BRAINLIEST!
    8·1 answer
  • Which best describes a person's carbon footprint?
    9·2 answers
  • A sodium-potassium pump _____. moves three potassium ions out of a cell and two sodium ions into a cell while producing an atp f
    8·1 answer
  • Which of the following is often provided by anthropologists and biologists as a possible explanation for the development of bipe
    11·2 answers
  • In humans, a. How many sperm develop from 100 primary sper matocytes? b. How many sperm develop from 100 secondary spermatocytes
    15·1 answer
  • An aquifer is a rock layer that stores and allows the flow of groundwater. Compared to other types of rock layers, how permeable
    14·1 answer
  • Some flowering plants appear to have offspring that have traits that are intermediate between those of the parents. Which type o
    6·2 answers
  • Carbohydrates on the surface of leukocytes play an important role in responding to infection or inflammation. Place the followin
    9·2 answers
  • You watch a scientist dissolve some sugar in a liter of water and then place some of this
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!