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uranmaximum [27]
2 years ago
7

Which of the following statements gives the most fundamental reason why ornithine is unlikely to be found in proteins synthesize

d in vivo?A. "There is no codon for it in the standard genetic code"B. "It cannot form a peptide bond"C. "It is not available in the diet"D. "It has a net positive charge in aqueous solution".
Biology
1 answer:
BlackZzzverrR [31]2 years ago
6 0

Answer:

option A

Explanation:

ornithine is a non-protein and non-essential amino acid it is formed in plant by L-glutamate and in animals it is formed during the urea cycle by the catalyzation of arginine which is an enzyme. In vivo ornithine is not found in protein synthesis because it do not have any codon so it can not endoded by DNA but can be synthesized.

Ornithine is a precursor of glutamic acid, proline amino acid and citrulline amino acid

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Euglena is microbial eukaryote that has chloroplasts and can thus perform phtosynthesis. When deprived of light and treated with
Advocard [28]

Answer:  

Euglena have diversed nutritional requirements. They are autotrophic when kept in light and heterotrophic when deprived of light.

The Euglena contains chloroplast in it to perform photosynthesis in the presence of light.

When the Euglena is kept in the dark it starts deriving energy from the organic matter around it and shows heterotrophic mode of nutrition.

When light will be provided to Euglena it will start resynthesizes its photosynthetic pigment and it will start perform photosynthesis.

7 0
2 years ago
Land-based plants must have mechanisms to disperse and scatter their seeds so that new plants don't grow in the shadow of old pl
katen-ka-za [31]

Answer:

Its c ,animals ,seed wings and wind

Explanation:

There are mainly 2 ways the seeds of gymnosperms are dispersed :-

  1. The gymnosperms that are old become rip and their cones open up and the seeds are dispersed by the wind.There are small seed wings present on seeds that take the seed to long distance places
  2. The fruit of the gymnosperms gets eaten by the animals in different places as its their source of food .The seeds are not digested by the animals and excreted as a result the seed is dispersed far away from the source
5 0
2 years ago
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when caring for a female patient who has been sexually assaulted, you should: Select one: a. allow law enforcement to take her s
Amanda [17]
D .............. im pretty sure its this one :)
8 0
2 years ago
In E. coli, the primary component of the mismatch repair system is the protein MutS. How does MutS recognize mismatched base pai
nignag [31]

Answer:

The best answer to the question, given the research found on this particular process in E. Coli specifically, would be: D) It identifies hemimethylated base pairs and methylates the unmodified base.

Explanation:

According to research on this pretty complicated topic, in E. Coli specifically, and other gram negative prokaryotes, it has been found that the presence, or absence of methylation will initiate MutS, which is a protein both in prokaryotes and eukaryotes responsible, in a full complex, of initiating and carrying out the full mechanism of DNA mismatch repair. As the daughter DNA strands are produced from parent strands, these first ones arise with several deletions and mismatches which need to be repaired and they are recognized due to the fact that daughter strands are hemimethylated. This circumstance activates MutS in E. Coli, who will then bind to the DNA strand that needs to be repaired and together with other members of the complex, like MutH and MutL, begin the process of repair.

In eukaryotes and other prokaryotes, the exact process by which DNA is repaired by MutS is still not totally known.

6 0
2 years ago
How is the message from the brain sent in response to the stimuli?
ivolga24 [154]
When a stimulus is being detected, this stimulus is being sent to the brain through the sensory neuron, going to the spinal cord then to the brain. The brain then interprets these stimuli, and responds to it using the motor neurons. These are the neurons that are responsible in our actions depending on the stimuli we are exposed to. Hope this helps.
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2 years ago
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