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suter [353]
3 years ago
10

true or false? harmful rays from the sun, called gamma rays, make up about 10% of the rays that reach the earth

Biology
1 answer:
Crazy boy [7]3 years ago
6 0
I’m not a 100% but I think true
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You extract DNA from some of your cells and cut out the complete human growth hormone gene directly from this DNA. You put this
Mars2501 [29]

Answer:

A) Bacteria cannot carry out RNA splicing to remove introns and so produced a much larger protein.

Explanation:

Human is a eukaryote and has both introns and exons in its genes. Transcription of human genes forms a primary transcript that undergoes post-transcriptional modification.

One of the important even during the post-transcriptional modification is the removal of introns and joining the exons together to make a mature mRNA which in turn serves as the template for protein synthesis.

<em>E. coli</em> is a prokaryote and does not have the enzymatic machinery required for the splicing of introns.

Cloning of a complete human gene into the <em>E. coli</em> cells would not form the respective human protein since the bacterial cells would not be able to splice the introns from the primary transcript.

7 0
3 years ago
Leaves change colors when they lose
kari74 [83]

Answer:

D. chlorophyll, is the best answer

Explanation:

In fall, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible

Hope this helps!

7 0
2 years ago
Q.O.H.E.C.C.C.
MissTica
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5 0
3 years ago
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During which phase in erythrocyte development does the color of hemoglobin overcome the color of the stained ribosomes?
Sphinxa [80]

Answer:

The correct answer is - phase 2.

Explanation:

Erythropoiesis or the development of the erythrocytes is the process to which the development of the  erythrocyte cells from the bone marrow to the mature RBC. The development of these cells involved the three phases.

During second phase involves the differentiation of the precursors of the three different type of erythrocytes that are polychromatophilic, proerythroblasts, and orthochromatic erythroblasts. It also includes building up the color of the hemoglobin that overwhelms the color of ribosomes that is blue color.

Thus, the correct answer is - phase 2.

7 0
3 years ago
Which method gives the actual age of a fossil in years?
mixas84 [53]

Answer:

Relative dating

Explanation:

Thanks :)

6 0
3 years ago
Read 2 more answers
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