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Ivenika [448]
3 years ago
12

How would you expect the stomata of a leaf respond to a drought

Biology
1 answer:
VARVARA [1.3K]3 years ago
5 0
The amount of stomata would decrease in response to drought
This is because the stomata are the principal means of gas exchange in the plants. This controls water loss and the exchange of CO2 and Oxygen. 
<span>In drought conditions, excessive evaporation might lead to desiccation and an equally severe disruption of photosynthetic function. Thus, one might expect plant leaves exposed to drought conditions to have fewer stomata in sunlit environments. </span>
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Need a hypothesis for “How are proteins built from RNA”
Dima020 [189]

Hi!


Hypothesis:

<em>Proteins are built from the translation of messenger RNA (mRNA) molecules</em>


RNA, or ribonucleic acid, is a structure that is similar to DNA, except that it exists as a single strand, consists of a ribose sugar instead of a deoxyribose sugar and has the base uracil (U) instead of thyamine (T).


<h3><u>From DNA to RNA</u></h3>

RNA is generated through transcription of the DNA molecule, resulting in a <em>complementary </em>molecule of the template DNA strand. For instance, if the sequence of the DNA was:

ATGCGCAGTTATTGCGAT

The corresponding RNA sequence will be:

UACGCGUCAAUAACGCUA    <em>(complementary with U instead of T)</em>


<h3><u>From RNA to Protein</u></h3>

The RNA molecule in our case is known as the mRNA. After transcription the mRNA molecule is transported to the cytoplasm, where a ribosome binds to it for another molecule to translate the sequence. This translation is mediated by an RNA molecule known as the tRNA molecule which enters the ribosome to catalyze the reaction.

These molecules identify a sequence of 3 bases (codon) and for specific codon sequences, the tRNA allocates specific amino acid. For instance, for the codon <em>UCA</em>, the tRNA will allocate a <em>Serine residue.</em>

This translation process starts at specific three base sequences, known as start codons, and terminates at specific three base sequences known as stop codons.

In this manner, a sequence of amino acids respective to the mRNA codon sequence is synthesized, and as we identify proteins as chains of amino acids that are covalently linked together through peptide bonds, we can clearly see that proteins are built directly from RNA, and indirectly from DNA.


Hope this helps!


3 0
3 years ago
What are the responsibilities of the region of the brain highlighted below?
spayn [35]

That part of the brain is specifically used for expressing language, so I would say "<u>Controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities.</u>" Is the answer. It's known as the Bronca's Area.

5 0
3 years ago
Read 2 more answers
I NEED HELP WITH THIS BIOLOGY QUESTION
nataly862011 [7]
C, the first two don't make sense and the last one would support the opposing view point.
4 0
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What organism would break down the dead animals and put nutrients into the soil? What organisms would benefit from them?
posledela
Decomposers break down dead animals and plants. They usually benefit producers by releasing nutrients back in the soil.
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3 years ago
Is there a term for water's ability to bend around objects? (For example, how water, like any liquid, will curve around a rock t
Sav [38]
Viscosity refers to the speed at which a substance can flow (i.e. the thickness of the substance/its ability to flow). I think that's the closest the English language gets. 
8 0
3 years ago
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