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yulyashka [42]
3 years ago
8

What is a stem cell?

Biology
1 answer:
Mazyrski [523]3 years ago
5 0

Answer:

stem cell are special human cell that are used to develop the different cell like muscles cells , brain cell etc.

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Male peacocks have tail feathers that make up 60% of their body length. During the mating season they fan their tails and shake
levacccp [35]
It’s 3 I know the answer
4 0
3 years ago
The peripheral nervous system is made up of
Sophie [7]

Answer:

Somatic and autonomic nervous system

Explanation:

It consists of somatic nervous system and autonomic nervous system

5 0
3 years ago
Why do you think our body cells are called basic unit of life?
densk [106]

Answer:

Cells make up the smallest level of a living organism such as yourself and other living things. The cellular level of an organism is where the metabolic processes occur that keep the organism alive. That is why the cell is called the fundamental unit of life.

6 0
3 years ago
Read 2 more answers
Early geneticists wondered how only four nucleotides could specify the sequence of 20 amino acids in proteins. Today we know tha
Ymorist [56]

Answer:

Early geneticists wondered how only four nucleotides could specify the sequence of 20 amino acids in proteins. Today we know that there is a genetic code in which <u>3</u> nucleotide(s) code(s) for each amino acid.

Explanation:

64 or 43 is the number of possible 3-letter codes which is more than the number of amino acids. Hence, the code can thus be redundant. It has been seen that there is more than one codon that codes for the same amino acid in some cases, .

Hence, Early geneticists wondered how only four nucleotides could specify the sequence of 20 amino acids in proteins. Today we know that there is a genetic code in which <u>3</u> nucleotide(s) code(s) for each amino acid.

5 0
3 years ago
If a certain mammal has a haploid number of 13, how many chromosomes are there in
goldenfox [79]
The answers are 26 and 13 respectively.

Haploid cells means that the cells has a half number of chromosomes in the nucleus than other normal cells. These cells are results of meiosis, which is a kind of cell division that produces 4 genetically different daughter cells. The cell divides without duplicating its genetic material. Common haploid cells include such as gametes.

In opposite of haploid cells, we have diploid cells. They have 2 sets of chromosomes, which is the full set that the organisms could have. They're usually the results of mitosis, a kind of cell division that produces 2 daughter cells that are genetically identical to both the other daughter cell and the parent cell. They are important for activities such as growth, repair etc. These diploid cells appears in somatic cell, aka the normal body cells.

Therefore, there you have it, somatic cells has 2 sets of chromosomes, so it's 13 + 13 which makes it 26, and gametes, in haploid condition, a given 13.
8 0
4 years ago
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