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Rasek [7]
3 years ago
7

HELPPPPPPPPPPPP ASAPP

Biology
1 answer:
Assoli18 [71]3 years ago
5 0

I think lungs and skin

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Which of the following is an example of an ecosystem service that would provide protection from a hurricane storm surge?
Nuetrik [128]

Answer: An intact coastal wetland

Explanation:

Hurricane storm surges results when the water level rises above normal as a result of a storm and therefore goes inland from the coast far deeper than it normally does.

Normally this can destroy things next to the coast by washing them away but some ecosystem services can provide protection against this such as an intact coastal wetland. Being intact, there are less chances of being washed away and as it is a wetland it is used to high levels of water and can even absorb some of the surge.

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What must happen to a chromosome before a cell starts mitosis? What must happen to a chromosome before a cell starts mitosis? A.
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Answer:

The DNA must be replicated first to be a whole chromosome since at the previous division it was only a set of two "half" chromosomes.

Explanation:

Mitosis never replicates DNA which is split in half in a set pattern every replication to prevent mutations.

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3 years ago
Help what is an ion a compound A.that contains two elements
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Answer:

b, the definition of an ion is a charged atom or molecule

6 0
4 years ago
Closure of the tricuspid valve:____.
kodGreya [7K]

Answer:

The first heart sound (S1) represents closure of the atrioventricular (mitral and tricuspid) valves as the ventricular pressures exceed atrial pressures at the beginning of systole (point a). S1 is normally a single sound because mitral and tricuspid valve closure occurs almost simultaneously.

Explanation:

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An mRNA sequence reads: GAA/GCU/AUA/CUA/UGU. What would the effect on the amino acid be if the second codon read GCA instead, an
Murrr4er [49]

Answer:

D) Silent mutation on second codon, third amino acid changed from ILE to ASN.

Explanation:

Silent mutations are usually point mutation where you change one nucleotide. Since, the nucleotide changed is the third position, it does not affect the protein being manufactured (it will still put the amino acid Ala) [look up the codon redundancy on youtub.e to understand how awesome nature is!]

On the other hand, the other mutation introduced is Missense mutation where a different Amino acid is added due to change in codon (goes from ILE to ASN).

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