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fiasKO [112]
3 years ago
12

Which of the following describes a choanocyte?

Biology
1 answer:
Firdavs [7]3 years ago
7 0

Answer:

D

Explanation:

cause I think thts the answer sorry if I'm wrong

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Please answer giving brainliest
nika2105 [10]

Answer: sorry

Explanation:

3 0
3 years ago
What is the difference between normal and sickle hemoglobin at the DNA, RNA, and protein (amino acid) level?
BaLLatris [955]
<span> DNA sickle hemoglobin is a result of a point mutaion in one base rna changes from gag to gug protein amino acid level changes amino acid from glu to val. </span>
4 0
3 years ago
A _____ is a sequence of 3 nucleotides within mRNA that encodes for a specific amino acid or termination sequence. ​
gregori [183]

Answer: Codon

Explanation: A codon is a triplet of nucleotides in an mRNA that codes for specific amino acids. There are 64 possible codons. They are called the genetic codes. Three of these codons (UAA, UAG, UGA) do not code any known amino acid and are thus called termination codons. One of the codons (AUG) signals the beginning of translation and is thus called initiation codon.

6 0
3 years ago
Cystathioninuria can be caused by two different mutations in the enzyme cystathionase. Cystathioninuria caused by mutation 1 can
polet [3.4K]

Answer:

C. The enzyme with mutation 1 has decreased affinity for pyridoxal phosphate, whereas the enzyme with mutation 2 has lost the ability to bind to the substrates.

Explanation:

A coenzyme is an organic cofactor that binds with an enzyme in order to initiate or aid the function of the enzyme. A coenzyme binds to the active site of the enzyme (where the reaction occurs), thereby triggering its activation by modifying protein structure during the reaction. Some examples of coenzymes include Coenzyme A and Adenosine triphosphate (ATP). Pyridoxal phosphate is a coenzyme (it is the active form of vitamin B6) that is required for the function of cystathionase. Moreover, cystathionase is an enzyme that enables cells the synthesis of cysteine from methionine (transsulfuration pathway). The binding of pyridoxal phosphate to the enzyme increases the binding affinity of the enzyme for the substrate, thereby influencing its activity. In this case, it is expected that mutation 1 reduces the binding affinity of the enzyme to the cofactor, and thereby the cofactor is required at a higher concentration to restore normal enzyme activity.

3 0
3 years ago
In a certain aquatic biome, the fish and turtles feed on sea grasses. Recently, the availability of sea grasses in that aquatic
larisa [96]
The type of competition that exist between the two species is INTERSPECIFIC COMPETITION.
There are basically two types of competition in any given ecosystem, these are intraspecific and interspecific competition. Intraspecific competition occurs among organisms of the same species while interspecific competition occurs among organisms of different species.<span />
4 0
3 years ago
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