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GrogVix [38]
3 years ago
5

What are two of the products of the kerbs cycle

Biology
1 answer:
Alona [7]3 years ago
8 0

Answer:

NADH and carbon dioxide are products of the Krebs Cycle.

Explanation:

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Oksanka [162]

Answer:

litmus paper is b

acid is A

base is D

an ph is c

Explanation:

5 0
3 years ago
(1) What is "Brown Blood"disease in fish <br> (2) What is the cause of brown blood disease
denis-greek [22]

Answer:

(1) Nitrite poisoning

(2)  Its cause is elevated levels of nitrite in the pond or culture system water.

6 0
3 years ago
Boris Magasanik collected data on the proportion of each base in RNA from different species. To compare the relative amount of e
just olya [345]

Answer:

The nucleic acid is a macromolecule present in living systems in the form of either DNA or RNA, whose molecule consists of many nucleotides which are linked with each other to form long chains. The presence of DNA or RNA in an individual promotes continuity of life. The variability and complexity of nucleic acid are dependent on its constituent molecules as, sugar, a phosphate group, and a nitrogenous base. However, two monocyclic nitrogenous bases were classified purines (adenine:A, guanine:G) and pyrimidines (thymine:T, cytosine:C, and uracil:U).

In addition, RNA is a single-stranded structure which differs from DNA in two aspects, the sugar content of RNA is ribose, and pyrimidine base uracil replaces the thymine base of DNA. A ratio between two strands of DNA can be calculated by using Chargrff's rule which states that "DNA from any cell of all organisms possess a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases'.

The purine to pyrimidine ratio in RNA with different bases is given below in the following table:

Presence of single strand in RNA does not follow chargaff's rule and alters the purine: pyrimidine ratio. The above ratio of each base in the given information is not equal, due to which the ratio of purines to pyrimidines is different. The ratio of DNA and RNA is not equal because DNA has its complementary DNA strand. However, bases in RNA might vary due to its single-strandedness property, but its ratio is dependent on the species.

Therefore, it can be concluded that the ratio of purines to pyrimidines is dependent on the species due to its genetic makeup. Hence, option (c) is correct.

7 0
3 years ago
The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of
Kay [80]

Answer:

If it helps, the answer is Mutualism (let me know if it is for some reason incorrect)

4 0
3 years ago
Some bed bugs had mutations in their genetic code which allowed them to survive the chemical pesticide and they produced chemica
Salsk061 [2.6K]

Answer:

Random mutations led to evolution of pesticide resistance genes in bed bugs.

Explanation:

Random mutations in genome of bed bug imparted them the pesticide resistance. Since the bed bugs having the mutation of pesticide resistance were able to survive under presence of pesticides, this variation was favored by natural selection. The bugs with pesticide resistance transmitted this trait to their progeny. In time, the bed bug population consisted of most of the bugs having the pesticide resistance.

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3 years ago
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