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anastassius [24]
3 years ago
15

How does the circulatory and respiratory system work together?

Biology
1 answer:
xenn [34]3 years ago
8 0
Since the circulatory system has to deliver oxygenated blood and take deoxygenated one for it to be oxygenated again, it cannot do the exchange by itself but depend on the respiratory system foe exchange........im no expert. just trying
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Marina86 [1]

Answer:

The disease of Lyme

Hope this helps!!

Explanation:

6 0
3 years ago
Which of the following best describes how a blood cell and skin cell have the exact same DNA sequence and yet look different and
den301095 [7]

Answer:

This question is incomplete as it lacks options, however, it will be answered BROADLY so the it can be understood enough to select the correct answer.

Please find the explanation below

Explanation:

Cells perform different functions and look differently because of the process of CELL DIFFERENTIATION. All cells arise from a single stem cell, which then gradually differentiates into different types of cells with different functions, as they divide.

At the molecular level, these different types of cells contain the same DNA sequence as rightly stated in the question. However, they look and perform differently because some of the genes are turned on while the others are turned off via the process of GENE EXPRESSION.

Therefore, a blood cell and skin cell possess exactly the same DNA sequence but look different and perform different functions because of CELL DIFFERENTIATION in which some genes on the DNA sequence are expressed and others are repressed. For example, in the blood cell; the genes coding for certain proteins found in blood are expressed while every other gene is silenced or inhibited. This allows those cells to perform only blood-related functions.

3 0
3 years ago
How do researchers prepare an intron-free copy of a eukaryotic gene for use in creating transgenic bacteria?
Tcecarenko [31]

The researchers prepare an intron-free copy of the eukaryotic gene for the use in creating the transgenic bacteria by using the reverse transcriptase to make the cDNA from the mature mRNA

The structure of the eukaryotic genes. Most of the eukaryotic genes are contain the segments of the coding sequences (exons) that interrupted by the noncoding sequences (introns). Both the exons and the introns are transcribed to yield a long and primary RNA transcript.

Eukaryotic DNA is the linear, compacted into the chromosomes by the histones, and has the telomeres at each end to protect from the deterioration. The Prokaryotes contain the circular DNA in addition to the smaller, transferable DNA plasmids. Eukaryotic cells contain the mitochondrial DNA in the addition to the nuclear DNA

To know more about eukaryotic gene visit:

brainly.com/question/28297163

#SPJ4                                                                    

3 0
2 years ago
in lab micr the short tail phenotype is fominant to wild long assuming tail length is controlled by a single locus a likely expl
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Answer:

The answer is "Option e".

Explanation:

please find the complete question in the attached file.

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we always get two types of lines. It demonstrates there was no uniform AA genera. It is a case of the heterozygous dangerous gene, that can cause a set of identical alleles inside an organism to always be lethal.

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(tco 3) the hormone ________ is released after the ingestion of a meal and triggers the stomach to release digestive juices.
Marizza181 [45]

The answer is Gastrin

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