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Harlamova29_29 [7]
3 years ago
6

Human reproduction takes place as internal fertilization via sexual intercourse. Imagine fertilization of the egg occurs. What h

appens next? All BUT ONE apply.
A) Menstruation stops.
B) The fetus develops within the vagina.
C) The fertilized ova attaches to the endometrium.
D) The mother-fetus blood connection the placenta, develops.
Biology
2 answers:
kotegsom [21]3 years ago
8 0

Answer:

2

Explanation:

Zepler [3.9K]3 years ago
8 0

Answer:

I think the answer is B).

Explanation:

a fetus grows in a membrane pear shaped sac in the uterus high within the abdomen.

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A standard PCR cycle includes three steps: denaturation (95°C), annealing (55°C), and elongation (65°C).
xz_007 [3.2K]

Answer:

Denaturation process: The DNA template  

Annealing process: Primers  

Elongation process: dNTPs and Taq polymerase

Explanation:

For the denaturing process, the only ingredient that is required is the DNA template that will be separated from a double helix (or double strand) into a single strand, by increasing the temperature to 95 C, (at this temperature the hydrogen bonds that keep together the double stranded break). After the double strand is denatured, the following process is annealing. For this, the required ingredient are the primers; these primers will hybridize or anneal according to the nucleotide complementarity to the single strand of the DNA. Finally, for the Elongation process, you will require the Taq polymerase and the dNTPs. The enzyme will synthesize or “generate” a new strand of DNA based on the DNA template, using the provided dNTPs in the direction 5’ to 3’.

I hope this clarify you inquiry.  

6 0
3 years ago
External respiration involves The exchange of O2 and CO2 between the lungs and the environment The exchange of wastes through th
Ganezh [65]
External respiration (correct answer) involves the exchange of oxygen and carbon dioxide within the environment.

The exchange of wastes through the skin is just called excretion by sweating. 

There is no exchange of nutrients that occur in the lungs but rather absorption of nutrients is the function of the gastrointestinal tract.

The exchange of oxygen and carbon dioxide within the cell is called cellular respiration and involves carrying oxygen from the blood to the cell then the cell uses it as the final electron acceptor in the electron transport chain. The metabolic wastes of the cell, primarily carbon dioxide, goes now to the bloodstream to be exchanged for oxygen in the lungs.
8 0
3 years ago
Organisms are discovered to be living in a deep-sea trench. They are most likely _____.
Brilliant_brown [7]
I think its the c. archaebacteria because there are hundreds of species of archaebacteria living under the sea.....
and bacteria is harmful to all lifes of species..
4 0
3 years ago
Using the following words, explain the difference between
Degger [83]
RNA is single-stranded while DNA is double-stranded.
RNA contains uracil while DNA contains thymine.
RNA has the sugar ribose while DNA has the sugar deoxyribose.
4 0
3 years ago
Read 2 more answers
Which of the following is true about the products formed during photosynthesis?
Elina [12.6K]
Should there be answer choices that go with this question?

If not here is an answer that may help.

This is how the cycling between photosynthesis<span> and cellular respiration occurs: </span>in photosynthesis<span>, carbon dioxide and water, </span>in<span> the presence of light energy, are converted to make glucose and oxygen.</span>
8 0
3 years ago
Read 2 more answers
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