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Lelechka [254]
3 years ago
13

Which of the following are characteristics of ultramafic igneous rocks

Biology
1 answer:
topjm [15]3 years ago
7 0
Lowest silicon content
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While walking down the street, a cat jumps out of an alley into the pathway of an adult. They note that the man's heart is "raci
Sedaia [141]

Answer: The palpating heart race response is due to the sympathetic nervous system controlling the body's fight-or-flight reactions. 

Explanation:

The sympathetic nervous system is in charged of controlling the body's fight-or-flight reactions. When facing a threat, these responses defaultly prepare our body to flee from danger or face the threat head-on.

Many of the physiological responses you experience during times of emotional streaming, such as sweaty palms or a racing heartbeat, are regulated by the sympathetic nervous system, a branching of the autonomic nervous system.

5 0
3 years ago
What would decrease the amount of oxygen discharged by hemoglobin to peripheral tissues?
Marina CMI [18]

The following factors will decrease the amount of oxygen discharged by hemoglobin to peripheral tissues.

A) decreased temperature

B) increased pH

C) decreased amounts of DPG

D) increased tissue PO2

How oxygen is being transported?

About 97% of the oxygen used during breathing is delivered by red blood cells in the blood, while the remaining 3% dissolves in plasma. The pigment hemoglobin, which is found in RBCs, is what gives blood its red color. According to the partial pressures of oxygen, carbon dioxide, H+ concentration, and temperature, oxygen attaches to hemoglobin to create oxyhemoglobin. Up to 4 oxygen molecules can be carried by a single hemoglobin molecule. The optimum circumstances for the synthesis of oxyhemoglobin include low temperature, high H+ concentration, and oxygen partial pressure. In the alveoli, these criteria are satisfied. But in the tissues, the circumstances are different, and as a result, oxygen is separated from oxyhemoglobin.

To know more about the transport of oxygen visit:

brainly.com/question/17094907

#SPJ4

6 0
1 year ago
47
Alex787 [66]
C. DNA Polymerase matches adenine to thymine and cytosine to guanine. Two identical double helixes are produced.
4 0
2 years ago
A gene with the sequence ATTCATTCA underwent duplication after a few generations. Which sequence represents this gene after the
Ratling [72]

Answer:

The sequence would be <u>ATTCATTCA</u>.

Explanation:

Usually, when a sequence is duplicated, one of them becomes a non-coding. It's just like a computer. There can only be one specific file, or else a duplicated one will just replace the existing one, if you allow the file to do so. Same with DNA. This is why most of our DNA have no function and why we lost genetic abilities such as being able to produce our own Vitamin C.

So instead of the new gene being ATTCATTCAATTCATTCA, it's simply ATTCATTCA. You simply cannot have duplicates, just like computer files. I wish I could share an amazing video by PBS Eons giving a great explanation about genes and stuff, but sadly Brainly doesn't like such stuff, so just <em>search up in ㄚㄖㄩㄒㄩ乃乇 (ebuTouY) "genes we lost along the way" and it should be the first video that pops out.</em> Trust me, it's a great video, it's much better than my explanation.

4 0
2 years ago
Which describes the flow of energy in a food chain?
Archy [21]
D. because the sun grows the grass the mouse eats the grass and the snake eats the mouse...
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