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Lerok [7]
3 years ago
9

List three things that an astronomer can learn about a star by studying its spectrum.

Biology
1 answer:
Natali [406]3 years ago
6 0
Astronomers can learn it's temperature, state, and composition. 

hope this answers your question....!
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Bacteria are organisms that need to be viewed with a microscope Darla designed a model of bacteria using household
levacccp [35]

Answer:

She was able to represent something small in a larger way.

Explanation:

Obviously if the bacteria need to be viewed with a microscope, they are extremely small. Darla likely does not have access to a microscope at her house, so using the macaroni and string, she made her own way of "seeing" the bacteria, but in a larger way. B is false because bacteria are small, not large. C is false macaroni do not need to be viewed with a microscope; in fact, this will probably allow you to not see them very well at all. D is false because macaroni wouldn't really show any patterns.

7 0
3 years ago
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Nitric oxide is a paracrine signal molecule because NO
hichkok12 [17]

Answer:

C. is unstable, with a short half life

Explanation:

Paracrine hormones are the hormones that act on neighboring cells only. These hormones or chemicals are largely unstable and have a brief life as do not visit the distantly placed target cells. For instance, somatostatin is secreted by D cells of the pancreas. It acts in a paracrine manner and inhibits the discharge of hormones from the neighboring beta and alpha cell.

Likewise, one of the functions of unstable NO gas is to serve as a vasodilator. It is released by epithelium cells and serves to dilate arterioles and relax precapillary sphincters. Then it is degraded.

8 0
4 years ago
(Enzymes) Which of the following may cause an enzyme to unfold or denature?
Sergeeva-Olga [200]
Really high temperatures cause the enzyme to denature.
4 0
3 years ago
What parts of your body should have protection whenever you fire a handgun?
svp [43]
In firing a handgun, it is best to have protection in the eyes and ears. It could be seen to those people who are practicing shooting and to those who are authorize to use a hand gun. The reason why these are needed to be protected because firing a hand gun is loud enough that it could damage the ears when not protected and in the same time if eyes is not protected and the hand gun could have any complication or dysfunction, it could affect the eyes. 
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3 years ago
What is the attached body form of Cnidarians
Korolek [52]
The attached body form of Cnidarians would be polyp
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3 years ago
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