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SpyIntel [72]
4 years ago
10

What is an important difference between the biosynthesis of purine nucleotides and pyrimidine nucleotides?

Biology
1 answer:
IRISSAK [1]4 years ago
3 0

Answer:

The correct answer is option C.

Explanation:

The biosynthesis of the pyrimidines are the simple than the biosynthesis of the purines nucleotide as pyrimidines are synthesized rings first and added later to the ribose sugar.

The synthesis of the bases of the purines are synthesizes the ribose sugar is bind first and latter it is added to the purine ring which is ribose - 5- phosphate.

Thus, the correct answer is option C.

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What are the estimated allele frequencies in a population if the frequency of the dominant phenotype is 0.64 (Hint: handout to g
Nadya [2.5K]

Answer:

0.8 and 0.2

Explanation:

Hardy Weinberg law states that the allele frequency of the population remain stable from one generation to next generation if no natural selection, drift or mutation occurs in the population.

Let p and q be the dominant and recessive frequency of the population respectively.

The dominant phenotype means p² = 0.64

p = 0.8

and we known that p + q = 1, in hardy Weinberg equilibrium.

0.8 + q = 1.

q = 0.2

Thus, the dominant allele is 0.8 and recessive allele is 0.2.

6 0
3 years ago
Proteins have a variety of functions within a living cell. Describe at least three of the possible functions of proteins, and ex
lidiya [134]
<span> 
Q:</span><span>Proteins have a variety of functions within a living cell. Describe at least three of the possible functions of proteins, and explain how proteins can be</span><span> 

A:Any of a group of complex organic macromolecules that contain carbon, hydrogen, oxygen, nitrogen, and usually sulfur and are composed of one or more chains of amino acids. Proteins are fundamental components of all living cells and include many substances, such as enzymes, hormones, and antibodies, that are necessary for the proper functioning of an organism. They are essential in the diet of animals for the growth and repair of tissue and can be obtained from foods such as meat, fish, eggs, milk, and legumes.</span>
7 0
3 years ago
Read 2 more answers
1. All thriving things need energy in order to __________________ and ________________
creativ13 [48]

1. All thriving things need energy in order to defend themselves (escape danger) and perform functions such as growth, maintaining balance, repair, reproduction, movement.

Sorry, I don't completely understand the second one

3 0
3 years ago
Ringing in the ears is called:
Elza [17]

Answer:

c. tinnitus

Explanation:

Tinnitus (a hearing impairment) is a form of  hearing of sound when no external sound is present Which is often described as a Ringing,Tinnitus may also sound like a clicking or roaring. i.e usually unclear voices or music are heard. The sound may be soft or loud, low or high pitched, and appear to be coming from one or both ears. Ranging from one person to another, the sound may causes depression or anxiety and can interfere with concentration.

Otitis externa is a condition that causes inflammation , the inflammation also covers  (redness and swelling) of the external ear canal, i.e the tube between the outer ear and eardrum.

Meniere's disease popularly called (MD), is a disorder of the inner ear that is characterized by episodes of feeling like the world is spinning (vertigo), hearing loss, and a fullness in the  ear. The cause of MD involves both genetic and environmental factors. Some of the factors include constrictions in blood vessels, viral infections, and autoimmune reactions.

Otosclerosis is a condition where one or more foci of irregularly laid spongy bone replace part of normally dense enchondral layer of bony otic capsule in the bony labyrinth. This condition affects one of the ossicles (the stapes) resulting in hearing loss, vertigo or a combination of symptoms.

Therefore from the foregoing we can conclude that Tinnitus is the correct anwser.

4 0
4 years ago
Read 2 more answers
2. What is the term for the waste
Arisa [49]
Tailings

Slurry is a liquid concrete or cement
Impoundments are enclosures of water
6 0
3 years ago
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