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VladimirAG [237]
3 years ago
9

How did scientists discover the common structure of cells?

Biology
2 answers:
erastova [34]3 years ago
7 0
Scientists first discovered cells through the microscope
Ket [755]3 years ago
4 0
They used the mcroscope to observe the structures of the cell. Some scientists draw while they are observing in the microscope

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Select the correct location on the image. The diagram shows an unfertilized female sex cell at different locations within the re
Marianna [84]

Answer:The image to this question is attached.

Answer is the ovary

Explanation: the process by which egg is produced is called oogenesis. It involves the mitotic division of the primodial germ cells to from a oogonia. The oogonia becomes enveloped by follicle cells . Oogonia grows to become the primary oocyte. Each primary oocyte is diploid. It then undergoes the first meiotic division to form the secondary oogonia and a smaller polar nody. all this process of development occurs in the ovary.

After it is released from the ovary, fertilization occurs and it undergoes the second meiotic division to from a polar body and an ovum.

The primary oocyte however remains in prophase of meiosis l throughout childhood.

8 0
3 years ago
Which best describes a gene
Mashutka [201]
A gene
is something that is passed onto you, pretty much like this: My dad had blonde hair and green eyes, and that's what I got. My mom was Brown haired and blue eyes. I got her eyebrows and mouth. Get what im saying? It's something that is passed down to you.
7 0
2 years ago
Read 2 more answers
What movement of the thumb would be most affected by lesion of the median nerve in the cubital fossa
natka813 [3]

Answer:

flexion

Explanation:

The flexion is a movement of the body part that is described the bending of an elbow, or the clenching a hand into a fist, etc. where the angle between any segment of the body and its proximal segment decreases.

In simple words, the flexion is a movement which decreases the angle between two body parts when they are moved.

The flexion occurs in the sagittal plane.

Thus, the movement of a thumb that would be mostly affected by the lesion of median nerve in cubital fossa is the flexion movement.

7 0
3 years ago
Autoimmune diseases occur when the immune system fails to recognize and tolerate ____________ antigens.
Dahasolnce [82]

Answer:

Harmful

Explanation:

When you have an autoimmune disorder, your immune system does not distinguish between healthy tissue and potentially harmful antigens.

6 0
2 years ago
How would decerasing the time it takes you to run a certain distance affect your speed ?
dmitriy555 [2]

It would mean you are moving faster than you already were.

motion

6 0
3 years ago
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