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Anarel [89]
2 years ago
9

Why are viruses hard to treat?

Biology
1 answer:
olga2289 [7]2 years ago
4 0

Answer:

 Some viruses are hard to treat because  sometimes it’s not the virus that makes us sick; it’s our immune system.

Explanation:

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Which statement is true of the X chromosome?
alexgriva [62]

Answer:

The correct option is D

Explanation:

A male sperm needs a x chromosome and y chromosome , whereas a female sperm needs 2 x chromosomes , Thus both genders needing x chromosome

4 0
1 year ago
Please help!!!!! I only have 5 minutes!!!!!!!!!
dusya [7]

Answer:

c i believe

Explanation:

6 0
3 years ago
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17. Which of the following statements are accurate?
Naddik [55]

Answer:

A. Neurotransmitters can act as ligands.

B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

Explanation:

Answer:

A. Neurotransmitters can act as ligands.

B. Acetylcholine is a neurotransmitter. It can bind to an acetylcholine receptor on the surface of a cell. If this receptor is also a sodium channel, we would call acteylcholine a ligand and its receptor a ligand gated receptor.

Explanation:

Neurotransmitter are chemicals that transfer signals between neurons and nerve cells. They control some physical and physiologocal activity such as appetite, food.

Acetycoline is an example of neurotransmitter and it is located in the parasympathetic nervous system. Ligand are substance that form complexes with biomolecule. They serve biological purpose with this biomolecule.

This ligand binds to target site. Neurotransmitter act as ligand by binding to receptor in the postsynaptic neuron and acetycoline a type of neurotransmitter can also serve as ligand they bind to acetycoline receptor on cell surface.

5 0
3 years ago
The human metallothionein IIA gene (hMTIIA) is transcriptionally regulated through the interplay of regulatory elements and tran
forsale [732]

Answer:

The correct answer is - regulation of the heavy metal and their toxicity.

Explanation:

Metallothionein is a group of cysteine-rich, small in size, and highly conserved proteins that bind to various metal ions and regulate their activity or toxicity in transcriptional level.

Metallothionein IIA is one of the metallothioneins that binds to heavy metal and helps cells to be protected from the toxicity of these heavy metals. These proteins are present in almost every eukaryotic organisms virtually. These proteins are highly induced to express highly in the present of heavy metals.

Thus, the correct answer is - regulation of the heavy metal and their toxicity.

5 0
3 years ago
PLEASE HELP ME FAST!!!!
krek1111 [17]

the answer is Life Science

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3 years ago
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