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olasank [31]
3 years ago
14

Proteins, nucleic acids, lipids, and carbohydrates are based on which molecule?(1 point)

Biology
2 answers:
TiliK225 [7]3 years ago
8 0

Answer:

A. Carbon

Explanation:

daser333 [38]3 years ago
4 0
A) carbon i think but i’m not sure
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What name is given to an enzyme which catalyses' the breakdown of proteins?
Brut [27]

Answer:

Proteases

Explanation:

Pro - protein

eases - enzyme

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3 years ago
Select the procedure that will not help saturate a thin-layer chromatography (tlc) developing chamber with developing solvent va
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The correct answer is adding ninhydrin to developing solvent.

Ninhydrinis used to detect (color) amino-acids, since amino acids are colourless compounds. So, after development, the TLC plate is sprayed with ninhydrin reagent and dried in an oven, at 105°C for about 5 minutes. It reacts with α- amino acids that results in purple coloured spots.  


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3 years ago
The physician finds a history of domestic violence for the patient, the patient's mother, and the patient's grandmother. this is
kati45 [8]
<span>The physician finds a history of domestic violence for the patient, the patient's mother, and the patient's grandmother. this is an example of Thinkernetic transmission of abuse.</span>
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3 years ago
What is the similarity between toxicity caused by an overdose of acetylcholine or nicotine and by the use of ganglionic blockers
dem82 [27]

Explanation:

In neurology, postganglionic nerve fibers are autonomic nerve fibers from the ganglion to the effector organ. These, unlike preganglionic fibers (whose sole neurotransmitter is acetylcholine) have a variety of neurotransmitters to fulfill their functions.

Neurotransmitters

The neurotransmitters of postganglionic fibers are varied, and are distributed as follows:

In the parasympathetic nervous system, neurons are cholinergic (Acetylcholine is the primary neurotransmitter)

In the sympathetic nervous system, neurons are mostly adrenergic (norepinephrine-epinephrine and / or norepinephrine, both have the same chemical structure, but epinephrine has a methyl group unlike norepinephrine that has a hydrogen, instead of a methyl group - act as the primary neurotransmitter) Two exceptions to this are the sympathetic innervation of the sweat glands and the piloerector muscles where the neurotransmitter in both pre and post ganglionic synapses is acetylcholine and in the vessels of the renal cortex where dopamine is used as the main neurotransmitter. Another exception is the sympathetic innervation of the medulla of the adrenal gland, which is innervated by preganglionic fibers, and subsequently uses acetylcholine as a neurotransmitter. Adrenal medulla cells are, in fact, modified postganglionic neurons that secrete epinephrine and norepinephrine directly into the bloodstream rather than a synapse.

In both divisions of the autonomic nervous system, postganglionic neurons express nicotinic acetylcholine receptors to receive signals from preganglionic neurons.

6 0
3 years ago
Mutation is an important mechanism for evolutionary change. Which type of mutations contribute to evolution?
rodikova [14]
Adaptations are the result of evolution in different living organisms. This process occurs amazingly through gene mutation but it takes a very long period in time. Adaptation processes occur to help species survive and thrive in the ecological balance of life. Structural adaptations are physical features of an organism that adapted through time. An example of this are the bills of a bird and the fur of bears that they generally need for their survival; birds for hunting, and bears to protect them from low climate areas.
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Functional or Behavioral adaptations refer to particular things that an organism or organisms do to survive. In the example above, behavioral adaptations that birds do is through certain bird calls and migration, while bears hunt during warmer seasons and hibernate during winter season. </span>
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