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Alik [6]
3 years ago
12

What type of person is an entrepreneur?

Biology
1 answer:
Fed [463]3 years ago
6 0
All above I think I don't know
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Oxygenated blood flows from the __________ to the __________ before being pumped into the systemic circulation.
jeka94

Answer: from the pulmonary veins into the left atrium.

Explanation:

After oxygenation of blood in the lungs, the right and left pulmonary veins carry oxygenated blood and empties it into the left atrium. The left atrium then empties the blood into the left ventricle through the left atrioventricular valve.

With contraction, the ventricle pumps the blood to the systemic circulation through the aorta. The blood flow into the aorta is guarded by the aortic valve.

7 0
3 years ago
A very active person uses a large amount of energy and therefore has a high
mamaluj [8]
A) a temperature is regulated by the body: so, not.

b) - rather not, most likely cholesterol level would be low

c) this is rather intedependent - a person can be active even without a fat diet.

d) I think this is the best answer. Metabolism is the exchange of energy in food into the energy that people use.
7 0
3 years ago
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Euglena are not the only organisms that have flagellum. Zooflagellates are protozoan that also have flagella. Although euglena a
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Possession of flagellum is not a taxonomic feature. many different unrelated organisms have flagellum. euglena, zooflagellates but also some fungi or even human sperm cells.
7 0
3 years ago
Nearly all nutrients present in tropical rainforest forests are contained in the
Mila [183]
<span>Nearly all nutrients present in tropical rainforest forests are contained in the (soil)</span>
5 0
3 years ago
One strand of a DNA molecule has the following sequence: 3-AGTACAAACTATCCACCGTC-5. In order for transcription to occur in that s
guajiro [1.7K]

Answer: Promoter

Explanation:

Transcription is the first step in gene expression which consists of copying the DNA sequence of a gene to produce a RNA molecule. There are enzymes called <u>RNA polymerases which perform this process of transcription</u>. These enzymes bind nucleotides (the monomers which are part of the nucleic acids) to create a RNA strand using a DNA strand as a mold.

A promoter is a region of DNA that controls the initiation of transcription of a given portion of DNA to RNA. Therefore they promote the transcription of a gene. <u>The promoter region is composed of a specific sequence of DNA located just where the starting point of the DNA transcription is</u> and contains the information needed to activate or deactivate the gene it regulates. <u>The promoter has a binding site for the RNA polymerase enzyme </u>in charge of mRNA synthesis and when it recognizes this site, transcription begins.

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3 years ago
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