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san4es73 [151]
3 years ago
8

Quick and simple science question. Please answer.

Biology
1 answer:
AlexFokin [52]3 years ago
4 0
3rd answer because as the red line goes down the green does too


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Scurvy is a disease that until the nineteenth century was common among sailors and others whose diets were deficient in vitamin
alina1380 [7]
<h2>Scurvy </h2>

Explanation:

(a) Collagen is the major structural component of cartilage,bones and tendons

  • The basic unit of collagen is tropocollagen and each tropocollagen consists of three coiled left handed polypeptide chains called α chains
  • Generally each α chain consists of a repeating tripeptide sequence called: G-X-Y
  • Here G represents glycine; X represents proline and Y represents hydroxyproline
  • Rigidity of collagen molecule is due to presence of proline and hydroxyproline
  • Hydroxylation of proline is catalysed by prolyl hydroxylase enzyme which use ascorbate,α ketoglutarate and oxygen
  • α ketoglutarate is oxidatively decarboxylated to form carbon dioxide and succinate
  • Sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues includes: tissue levels of ascorbic acid is low;  enzyme prolyl hydroxylase is inactive;  proline is not hydroxylated;  the triple helix is inadequately stabilized; collagen breaks down;  defects in tissues that depend on collagen ; tissues that depend on collagen are subject to breakdown and bruising

(b) Sailors are no longer susceptible to scurvy because fresh fruits which are the source of vitamin C source are available now

British sailors called "limeys" to this day,this term reflects the British navy's use of limes

5 0
3 years ago
What is the difference between complete and incomplete metamorphosis??
Scilla [17]

Both complete and incomplete metamorphosis extend from the egg stage to the adult stage. Complete metamorphosis consists of four stages: egg, larva, pupa, and adult. However, the incomplete metamorphosis consists of three stages: egg, nymph, and adult.


Hope This Helps.  

7 0
3 years ago
Explain the role of organic compounds in cellular respiration
SSSSS [86.1K]
<span>Organic compounds such as glucose are broken down to release energy during cellular respiration.</span>
3 0
3 years ago
How many recessive alleles I need for an expression of a recessive phenotype
Arisa [49]
You need two recessive alleles (xx). If even one dominant allele is present, the dominant trait will show (Xx or XX will both result in the dominant trait showing). That’s why they’re called dominant traits, because they overpower the recessive traits. In order for a recessive trait to show you must have two recessive alleles.
7 0
3 years ago
ASAP PLEASE A feature in the early hominid was her apelike shoulders and forelimbs but a pelvis that indicated most of her body
Katyanochek1 [597]
The best explanation for the the early hominid that indicated most of her body weight was above her pelvis is that her apelike structures indicates she could use tools like a chimpanzee. Scientists call her the Handy Human. The correct answer is C. 

4 0
3 years ago
Read 2 more answers
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