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Katen [24]
3 years ago
13

How can atoms behave at temperatures near -273c

Biology
1 answer:
meriva3 years ago
5 0
The air around us is a chaotic superhighway of molecules whizzing through space and constantly colliding with each other at speeds of hundreds of miles per hour. Such erratic molecular behavior is normal at ambient temperatures
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Makovka662 [10]
The challenges that scientists who want to study particular genes face are as follows:

1. There are many genes on a typical chromosome - A chromosome<span> typically contains hundreds to thousands of </span><span>genes.

2. </span>A small fraction of each chromosome encodes genes - <span> Genes only make up a small percentage of the genome; the rest is composed of non-coding sequences.

3. </span>It is difficult to distinguish between genes and non-coding genetic information - discriminating between<span> coding and </span>noncoding<span> regions in a given nonannotated genomic sequence is quite difficult.</span>
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3 years ago
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In what ways is the filtrate that enters the glomerular capsule different from the blood? Help please?
dmitriy555 [2]
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3 years ago
Erosion is a destructive force that
Tcecarenko [31]
Erosion<span> is the carrying away of those smaller pieces to another place. Deposition is the process by which</span>eroded<span> materials settle out into another place.</span>
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3 years ago
Impulses originating in the part of the brain called the medulla would most directly affect which body structure?
gtnhenbr [62]

The question is incomplete. The complete question is:

Question: Impulses originating in the part of the brain called the medulla would most directly affect which body structure?

a. A leg muscle

b. A ligament

c. An arm bone

d. The heart

Answer:

d. The heart

Explanation:

The medulla oblongata contains a number of reflex centers for regulating vital body functions such as heartbeat, breathing, and vasoconstriction. The medulla contains several nuclei, a collection of neuronal cell bodies.

For example, impulses originated in the cardiovascular center regulates the rate and force of the heartbeat and the diameter of blood vessels. Impulses from the cardiovascular center flow along sympathetic and parasympathetic neurons. An increase in sympathetic stimulation from the cardiovascular center of medulla increases heart rate and contractility while a decrease in sympathetic stimulation decreases heart rate and contractility.

5 0
3 years ago
How is atmospheric nitrogen converted into a biologically useful form of nitrogen?
frutty [35]

Answer:

The atmosphere is the largest reservoir of the nitrogen as it is composed of 78% of Nitrogen. Although 78%, this is not used by the organisms directly as the nitrogen molecule exists in nature in the form of divalent joined via triple bonds.

These triple bonds require a great amount of energy to be broken and used. Only a few prokaryotic organisms called nitrogen-fixing bacteria have the capability to break these triple bonds as they contain enzymes-nitrogenase complex which converts the atmospheric nitrogen to usable forms like ammonia, nitrates and nitrites. About 92% of the atmospheric nitrogen is fixed through this way rest through thunderstorms and Haber's process.

Thus, nitrogen-fixing bacteria is the answer.

8 0
3 years ago
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