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bonufazy [111]
3 years ago
9

Help i’m being timed

Biology
1 answer:
kykrilka [37]3 years ago
3 0
C is the answer to the question
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How does the ribosome know which protein to make?
bonufazy [111]
<span>Messenger RNA (mRNA) molecules are long strands of RNA nucleotides that directribosomes to make proteins. They travel from the nucleus to the ribosome. Ribosomal RNA (rRNA) molecules make up part of the ribosomes of the cell in the cytoplasm. Transfer RNA (tRNA) molecules transport amino acids to the ribosomes.</span>
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3 years ago
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Advantages of constant body temperaure
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Proteins function optimally at a specific temperature. So if you get too hot or too cold, biochemical reactions in your body start to function less well. If the situation becomes extreme enough, they can cease to function well enough to sustain life. 

Warm-blooded animals have an advantage over cold-blooded ones in that their bodies automatically try to maintain the optimal termperature for things in their bodies to function. Cold-blooded animals depend on the environmental temperature to do this for them. That's why reptiles are very sluggish when they're cold, but will "wake up" when they get warm. 

The cost to this benefit is that metabolically, warm-blooded animals require a lot more fuel to run their bodies. It's very energy-intensive to maintain a constant body temperature. Cold-blooded animals require far less fuel than warm-blooded ones relative to their size. 

The way that proteins operate in a specific temperature is also true of the pH in your body which is also very tightly maintained.
3 0
3 years ago
scientists believe the first organism to appear on earth were prokaryotic which of the following best represents what the cell s
Zielflug [23.3K]
Hi!

The answer is B. chloroplast because prokaryotic cells don't have contractile vacuoles, DNA, or a nucleus. 

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What 3 factors determine cell "readiness" for mitosis?
goldfiish [28.3K]

Answer:

Chromosomes must still be copied.

the cell must double in size.

the nuclear DNA must double.

Explanation:

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What is happening to glaciers over time. What is causing the change?
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The greenhouse is the cause of most climate warming and glacier retreat in the past 50 years, however, related causes like farming, burning fossil e.t.c are also causing glacier retreat

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