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Svetllana [295]
2 years ago
12

What is a stem cell?

Biology
1 answer:
Scorpion4ik [409]2 years ago
5 0

A stem cell are undifferentiated cells in tissues like bone marrow and the brain in the adult body.

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In perspective, with Earth being 4,500,000,000 years old and humans being around 1,400,000 years; how long out of a 24 day time
fiasKO [112]

Answer:

Day time period have we as humans been here: 26 seconds

Explanation:

4,500,000,000 years = 1 day

1,400,000 years = X

X = 0.0003111  

1 day = 86,400 seconds

0.0003111 = X

X = 26 seconds

In term of the Earth in 24-hour clock, <em>Homo sapiens</em> appeared on our planet only in the last 26 seconds, it means that in geologic time, humans have existed for only a brief time period and thereby it is a relatively new species.

5 0
3 years ago
The prime mover of hip extension is the __________. The prime mover of hip extension is the __________. gracilis gluteus maximus
RSB [31]

The prime mover of hip extension is the <u>gluteus maximus</u>

Explanation:

Hip extension refers to the act of lengthening, opening the front part of the hip. These positions cause the lengthening of the hip extensors.

The prime mover of the hip lengthening process or the major extensor muscle is gluteus maximus muscle which is present in the buttocks and is also one of the strongest muscles of the human body.

Connected with other bones such as coccyx, it helps in the movement of thighs and the hip and responsible for our sitting.

7 0
3 years ago
Genetic code is carried by the _____ molecule in most organisms.
mojhsa [17]
The genetic code is being carried by the DNA molecules which are found in most organisms.
DNA it is called Deoxyribonucleic acid. It is a thread-like known as nucleotides which carry genetic instructions which are used for growth, functioning, development, and reproduction.
 Both RNA and DNA are nucleic acids. DNA stores biological information. DNA is the backbone in resistance cleavage and is made from alternating sugar and phosphate.

5 0
3 years ago
Where does gylcolysis occur within a typical eukaryotic cell, and what are the end products of glycolysis
saw5 [17]

As a form of anaerobic respiration, glycolysis occurs in the cytoplasm. The end products (net) are 2 molecules of ATP, 2 molecules of NADH, and 2 molecules of pyruvate.

3 0
4 years ago
What organism creates its own food and produces seeds or spores
slamgirl [31]

The answer is grasses. Algae doesn't produce seeds or spores.

6 0
3 years ago
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