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Debora [2.8K]
3 years ago
14

Which of the following choices concerning enzymes is incorrect?

Biology
1 answer:
777dan777 [17]3 years ago
6 0

Answer:

b. They are a type of lipid  

Explanation:

Enzymes are organic molecules of a protein nature and act on the chemical reactions of cells as organic catalysts, ie, speed up the processes without changing them. They are usually the most effective catalysts for their high specificity. For this reason, we can assume that the letter A and the letter C are correct.

Enzymes have a specific substrate binding region. The region is called the active site, the conformation of this region forms a perfect and unique fit between a given enzyme and a substrate, usually by transient covalent bonds. For this reason, we can consider that the letter D is also correct.

As mentioned earlier, enzymes are protein molecules, so it is incorrect to say that enzymes are a type of lipid.

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What Directly supplies the energy needed to actively transport sodium ions across the plasma membrane of a cell
Artyom0805 [142]
Those would be enzymes I believe. They are the power house of the membrane and lower the amount of activation energy needed.
3 0
3 years ago
In a population of lizards, the allele that causes red eyes (R) is dominant, while the allele that causes green eyes is recessiv
zhenek [66]
The answer is 0.47 or 47%.

Let's first distinguish some terms and their frequencies.
R - the dominant allele that causes red eyes
r - the recessive allele that causes green eyes

Since R is dominant over r, lizards with at least one dominant R allele will have red eyes. Therefore, the genotypes and the phenotypes are as following:
genotypes - phenotypes
RR              - the lizards with red eyes
Rr               - the lizards with red eyes
rr                - the lizards with green eyes

Now, we will use some Hardy-Weinberg equations:
p + q = 1
p² + 2pq + q² = 1

where:
p - the frequency of dominant allele R
q - the frequency of recessive allele r
p² - the frequency of lizards with genotype RR
2pq - the frequency of lizards with genotype Rr
q² - the frequency of lizards with genotype <span>rr
</span>
We are interested in <span>the frequency p of the dominant R allele.
</span>So, we have the frequency (72%) of the lizards that have red eyes. However, lizards with genotypes RR and Rr will have red eyes. Since their frequencies are p² and 2pq, respectively, we have:
p² and 2pq = 72% = 72/100 = 0.72

Now, use this in the equation p² + 2pq + q² = 1:
0.72 + q² = 1
q² = 1 - 0.72 = 0.28

From here, we will calculate q and later p using the formula p + q = 1:
q² = 0.28
q = √0.28 = 0.53

p + q = 1
p + 0.53 = 1
p = 1 - 0.53
p = 0.47
5 0
3 years ago
Read 2 more answers
The consequences of particular diseases are features of _____.
USPshnik [31]
The answer would be: <span>secondary aging.</span>

There is two type of aging, primary and secondary aging. Primary aging is the one that happens because of the age so it can't be prevented. Secondary aging happens because of bad diet and disease, so it can be prevented by doing healthy lifestyle or medicine.
8 0
3 years ago
Question 15 of 25
Lady_Fox [76]

Answer:

D. The organelles are enclosed in membranes

Explanation:

One defining characteristic of eukaryotes is that they have membrane-bound organelles. If a cell lacks a water-storing vacuole, that could mean it is a prokaryote too. If a cell lacks a Golgi apparatus, it can never be a eukaryote. RIbosomes are characteristics of both prokaryotes and eukaryotes. D. is the best evidence that the cell is a eukaryote.

7 0
4 years ago
Who first recognized that species were groups of organisms that were distinguished from other such groups by their ability to ma
Pavlova-9 [17]

Answer:

Answer is John Ray.

Explanation:

John Ray was an English botanist that was successful in establishing species as the important or ultimate unit of taxonomy. His classification of plants was based on overall morphology and that makes its classification different from that of Linneaus, which based his own classification on floral reproductive organ.

John Ray classified plants into three major groups, which are

* Monocotyledon..... this is the group of flowering plants,  with only one cotyledon.

* Dicotyledon..... group of flowering plants with two cotyledons.

* Cryptograms.....these are plants that reproduce by spores.

It should be noted that flowering plants are also referred to as the ANGIOSPERMS.

4 0
3 years ago
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