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Alla [95]
3 years ago
12

How does this show that the circulatory and respiratory systems work closely together?

Biology
1 answer:
lara31 [8.8K]3 years ago
6 0
The respiratory and circulatory systems are close together by working and relying with each other. The respiratory system imports oxygen from the air  and that oxygen goes through out the body by the circulatory system pumping the oxygen. That creates carbon dioxide, which the respiratory exports from the body.
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The graph below shows the effect of carbon dioxide levels on the rate of photosynthesis.
Inga [223]
<h2>The correct answer is <u>it will decrease.</u></h2>
3 0
3 years ago
Plasmids are small circular DNA molecules found in bacteria that replicate separately from chromosomes. Why are plasmids essenti
oksano4ka [1.4K]

Answer:

DNA from a gene of interest can be inserted into a plasmid, then the modified plasmid can be inserted into a bacterial cell to replicate a gene of interest many times.

Explanation:

Plasmids are the extra-chromosomal circular DNA present in bacterial cells. Plasmids are able to replicate themselves independent of genetic DNA. Their ability to self replicate allows them to maintain themselves in the bacterial cells. This is why plasmids are used as cloning vectors in recombinant DNA technology.

A gene of interest is isolated from the donor cell and is inserted into the plasmid. The recombinant plasmid is introduced into bacterial cells where it replicates the ligated desired gene and allows the gene cloning. For example, the human insulin gene is ligated with plasmid and the recombinant plasmid is introduced in <em>E. coli</em> where it replicates the human insulin gene and allows the production of desired copies of the gene.

4 0
3 years ago
Which of the following ways are leftover neurotransmitters cleaned up if they
Alisiya [41]

Answer:

The correct answer is -

the neurotransmitters are broken down in the synapse

The presynaptic neuron absorbs the neurotransmitters

Explanation:

The termination of the neurotransmitters is essential as if they can cause harm by continuing the stimulus effect on the muscles or cells. To clean up these neurotransmitters there are two ways- Degradation of neurotransmitters with the help of enzymes in the synapses or synaptic cleft and the presynaptic neurons absorbs or suck up neurotransmitters. The neuron (presynaptic neuron) is that releases the neurotransmitter like dopamine, serotonin, is the one that re-uptake it.

This reuptake is done by transporter proteins that are are symporters in nature as these proteins pump neurotransmitters as well as ions back into the neuron.

5 0
3 years ago
Glass plate which the specimen is placed on
scoundrel [369]
Its called a microscope slide
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3 years ago
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Research indicates that stress can produce direct physiological effects such as elevated blood pressure, increased hormonal activity, and decrease in immune system functioning. Or, in other words, all except psychological disorders.
5 0
3 years ago
Read 2 more answers
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