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kow [346]
3 years ago
15

What is mitosis? What does it do?

Biology
2 answers:
Lerok [7]3 years ago
8 0
I think it is some kind of cell for like having simaler jeans to your parents
TEA [102]3 years ago
6 0
The main functions of mitosis<span> are growth and repair. Some cells once fully formed</span>do<span> not undergo cell division, such as nerve cells and muscle cells. Since you can never re-grow or repair these types of cells once they are mature, you must take care of the ones you have.</span>
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Which will you hear as the highest pitch? a sound wave with frequency of 10,000 Hz b sound wave with frequency of 30,000 Hz c so
inysia [295]

Answer:

A sound wave with 15,000 Hz

Explanation:

Humans can averagely hear up too 20,000 Hz. So around 15,000 would make most sense.

7 0
3 years ago
The reason that the genetic code can correctly specify the order of amino acids in a polypeptide is
Mama L [17]
A polypeptide consists of a group of amino acid chains that are bonded together. The genetic code can easily locate the order of amino acids in a polypeptide because these amino acids are connected covalently to the codons of the mRNA. 
5 0
3 years ago
What are the functions of the muscular system?
vaieri [72.5K]

As you have probably guessed, the main function of the muscular system is movement, but it also helps stabilize our joints, maintain our posture and generate heat during activity. Movement of our body can be voluntary and controlled by the skeletal muscles, or it can be involuntary and controlled by smooth muscles.

3 0
4 years ago
Read 2 more answers
How does a presynaptic neuron know just how much of a certain neurotransmitter (NT) it has released into the synapse?
Llana [10]

Answer:

A presynaptic neuron knows when and how much of a certain neurotransmitter it has to release into the synapse by the frequency of the action potential.

Explanation:

Two nuerons connect to each other through synapse. When an action potential, or nerve impulse, arrives at the axon terminal, it activates voltage-gated calcium channels in the cell membrane, then the calcium which is present in hi highconcentration outside the neuron than inside, rushes into the cell. The Calcium then allows synaptic vesicles to fuse with the axon terminal membrane, releasing neurotransmitter into the synaptic cleft.

The nuerotransmitter than binds to the receptors at the post-synaptic cleft and causes the opening or closing of the channels, hence, depolarizing or hyperpolarizing the cells.This can produce a change in the membrane potential—voltage across the membrane of the receiving cell.

4 0
3 years ago
What term is used to describe 100’s or 1000’s of amino acids chemically combined?
hjlf

Answer:

Polypeptide

Explanation:

Amino acids are the building block and simplest unit of protein molecules. The structural composition of each amino acids is made up of an amine group (-NH2), a carboxylic acid group (-COOH), a hydrogen atom (H) and a R side chain that differentiates every amino acid from one another.

In a reaction process called condensation, amino acids are chemically joined together via the amine group of one and the carboxylic group of another. This process releases water molecule (H20) to form a bond called PEPTIDE bond between the amino acids. Several amino acids in their 100’s or 1000’s that are chemically joined this way forms a POLYPEPTIDE chain, which in turn forms the protein molecule.

8 0
3 years ago
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