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Blababa [14]
3 years ago
10

What will be the contents for the presentation named DNA molecule natural selection.

Biology
1 answer:
VLD [36.1K]3 years ago
4 0
Which patterns of life were established during the time of the Umm an-Nar culture that still exit today pleas help me I ran out of poinst:(
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What part of the female system is the usual site of fertilization of the ovulated oocyte?.
Paul [167]

Fertilization of the egg cell by the sperm usually takes place in the fallopian tube. The fertilized egg then travels to the uterus and implants in the endometrium.

<h3>What are fallopian tubes?</h3>
  • Fallopian tubes are also called oviducts or uterine tubes. It is the passage through which the egg enters the uterine cavity from the ovary.
  • Fallopian tubes are part of the reproductive tract. They have a smooth muscle wall, an inner mucous membrane, and an outer layer of loose supporting tissue (serosa).
<h3>Why does fertilization take place in the fallopian tubes?</h3>

The fallopian tube (oviduct) regulates fertilization through sperm induction and sperm hyperactivity. Sperm induction is achieved by rheotaxis, thermotaxis, and chemotaxis. Rheotaxis is caused by tubal fluid that creates a current flow from the tubal ampulla to the tubal isthmus.

To learn more about fallopian tubes visit:

brainly.com/question/12711470

#SPJ1

8 0
1 year ago
A Punnett square is a tool used to Group of answer choices
kifflom [539]

Answer: a

Explanation:

A punnet square is used to determine which genes are the strongest

3 0
3 years ago
Pepsinogen is an:A) inactive precursor to the enzyme pepsin that digests proteins in the stomach. B) active enzyme that is relea
sasho [114]

Answer:

A. INACTIVE PRECURSOR OF THE ENZYME PEPSIN THAT DIGESTS PROTEINS IN THE STOMACH.

Explanation:

Pepsinogen is the inactive precursor of pepsin produced by the chief cells of the stomach lining. The stomach walls are lined by majorly two types of cells; the chief and the parietal cells. Chief cells secretes pepisinogen and parietal cells secrete hydrochloric acid in the stomach lining. The chief cells upon the signals of increased protein substance in the stomach produces pepsinogen which upon it release, it is activated to the active enzyme Pepsin by the hydrochloric acid from the parietal cell. Hydrochloric acid provides the acidic environment needed for the action of pepsin in the stomach. The pepsin begins the digestion of proteins into small amino acids in the stomach,

6 0
3 years ago
On the Galapagos islands, Charles Darwin studied many species of finches found nowhere else in the world. Each species had devel
Sedbober [7]

When Charles Darwin stepped ashore on the Galapagos Islands in September 1835, it was the start of five weeks that would change the world of science, although he did not know it at the time. Among other finds, he observed and collected the variety of small birds that inhabited the islands, but he did not realize their significance, and failed to keep good records of his specimens and where they were collected.


7 0
3 years ago
What type of protein is often used to carry other molecules?
Angelina_Jolie [31]
The answer is b, globular
7 0
3 years ago
Read 2 more answers
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