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Angelina_Jolie [31]
3 years ago
11

Vascular plants, like fern, show alternation of generations. Which represents a gametophyte in the life cycle of fern? a. Rhizom

es b. Prothallus c. Sporangia
Biology
1 answer:
lys-0071 [83]3 years ago
3 0
The answer would be option B
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1. Many varieties were available in alternative forms of a character

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What happens when there is a high concentration of positive transcription factors but a low affinity for the positive transcript
Troyanec [42]

When there is a high concentration of positive transcription factors but a low affinity for the positive transcription factor

Transcription factors are proteins that regulate the transcription of genes—that is, their copying into RNA, on the way to making a protein.

Proteins called transcription factors, however, play a particularly central role in regulating transcription. These important proteins help determine which genes are active in each cell of your body.

<h3>How does transcription factors affect gene expression?</h3>

Under the influence of transcription factors, the various cells of the body can function differently though they have the same genome. Transcription factors attach to one or more series sites, which are called transcription element binding sites (TFBSs), binding to specific DNA sequences of the genes they control

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2 years ago
Which piece of evidence did Alfred Wegener use to develop the theory of continental drift? A. the shape of the continents B. pal
Svetlanka [38]
A.......I think so. ; )
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3 years ago
Jon likes hiking. He observes that whenever he hikes up a hill he breathes heavier than when he is on flat ground. Which 2 state
Alekssandra [29.7K]

Answer:

-Sensors in the brain detect a lack of oxygen.

-The muscles in his body need more energy and therefore more oxygen.

Explanation:

-Sensors in the brain detect a lack of oxygen.

-The muscles in his body need more energy and therefore more oxygen.

-The body has too little carbon dioxide to maintain function.

-The body is using carbon dioxide instead of oxygen to make energy.

-Blood pressure has decreased, so less blood is being pumped to the muscles.

<em>The correct answer would be that </em><em>sensors in the brain detect a lack of oxygen</em><em> and t</em><em>he muscles in the body of Jon need more energy and therefore, more oxygen.</em>

At sea level, the atmospheric pressure easily allow oxygen to permeate the cells of the lung and diffuse into the blood. At high altitudes, air pressure is generally lower and permeation/diffusion through the cells of the lung into the blood becomes difficult.

<u>Without adequate oxygen, the body cannot generate energy needed for physical activities of muscles. Consequently, the sensors in the brain detect a lack of oxygen and the body system reacts by breathing heavily to compensate for the oxygen shortage.</u>

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One societal issue scientist will address ysing the human genome
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Is this like on a test or like homeowork?

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