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
kolbaska11 [484]
3 years ago
15

Menstruation does not occur if the A. uterine lining thickens. B. estrogen level falls. C. progesterone level falls. D. egg is f

ertilized
Biology
1 answer:
Mrrafil [7]3 years ago
7 0
<span>The question says,'menstruation does not occur if the ............ The correct option is D. The uterine lining usually build up in order to serve as a bed and support for fertilized a egg. If fertilization does not occur, the uterine lining breaks down and come out as menstruation, but if fertilization occurs, then the uterine lining will not break down but will support the fertilized egg all through the pregnancy period.</span>
You might be interested in
Name three methods of disrupting cells before fractionation
sladkih [1.3K]

Extraction, homogenization, and centrifugation are the three processes in cell fractionation.

Cell fractionation is a method for dividing cellular components while yet maintaining each component's unique functionality. This technique was initially applied to show where distinct biochemical activities are located within cells. Subcellular fractionation is also used to help with illness detection and to offer an enhanced source of protein for further purification. To prevent osmotic damage, tissue is routinely homogenized in an isotonic buffer solution. Grinding, mincing, chopping, pressure changes, osmotic shock, freeze-thawing, and ultrasonic waves are a few of the mechanisms for homogenization. After that, the samples are maintained cool to avoid enzymatic deterioration. It is the development of a uniform mass of cells (cell homogenate or cell suspension).

Learn more about  Subcellular fractionation here:-

brainly.com/question/11076837

#SPJ1

4 0
2 years ago
Explain why cells need to supercoil their dna molecules
Len [333]
DNA supercoiling means under or over winding of the DNA strand and basically is to become more condensed and more organized. Supercoiling is very important as it compacts the genetic code and as if that was not enough supercoiling also regulates and oversees the access the the genetic code.
5 0
4 years ago
A biologist is in the process of classifying and newly discovered fungus. The fungus is a decomposer and has sac-like structures
alekssr [168]
There are six major 'divisions' of fungi and those which produce sac-like structures are the division called Ascomycota. It is therefore most likely that the new fungus can be classified within this division. This group produces spores in distinctive sac-like structures. Members of the division include yeasts and penicillin.
7 0
4 years ago
Read 2 more answers
Enzyme A is currently functioning at a temperature of 55 and a pH of 7. According to the information provided in the chart, sele
polet [3.4K]

Answer:

every one will burn

Explanation:

4 0
3 years ago
Some closely related species of snails cannot mate because their shells spiral in opposite directions, making it impossible for
Sauron [17]

Answer:

The type of evidence is<u> Mechanical incompatibility.</u>

Explanation:

Copulation is often impossible between different animal species because of the incompatible shape and size of the genitalia.It is called mechanical incompatibility.

This isolation prevents species that diverge from interbreeding thus they lo longer able to mate with each other.

Here morphological difference  takes place which ultimately leads to behavioral isolation and thus no mating takes place.

Here snail can not mate because  their morphological structures are incompatible.

5 0
4 years ago
Other questions:
  • What do chloroplast use to make glucose
    8·1 answer
  • In sweet pea, red flower color is controlled by two genes involved in the anthocyanin pathway, A and B. Both genes are required
    10·1 answer
  • What are the Calvin Cycle steps in order?
    12·1 answer
  • Why are we seeing a rise in antibiotic resistant disease?
    7·1 answer
  • What feature is the same in the formation of many sedimentary rocks and fossil fuel?many sedimentary rocks and fossil fuels-
    10·2 answers
  • What was the purpose of Apollo space missions
    11·2 answers
  • What technology is used to remove solids from water
    13·2 answers
  • Which of the following is NOT a tarsal bone?
    7·1 answer
  • The plant has stunted growth. Which fertilizer do you recommend to make the plant healthy?
    6·1 answer
  • Which change to the chromosome causes Robertsonian translocation?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!