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Paul [167]
4 years ago
14

A class of lipids used as chemical messengers (or hormones) derived from cholesterol are called?

Biology
1 answer:
Deffense [45]4 years ago
6 0

A class of lipids derived from cholesterol are called steroids.

Steroids are important large class of biological molecules which are significant components of  cell membrane and signaling molecules.

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CELLS
zhannawk [14.2K]

Answer:

1.its microscopic and it is the building block to every organism

2. unicellular means 1 cell or type of cell

3. Multicellular means multiple cells or types of cells

4. prokaryotic, eukaryotic?

4 0
3 years ago
The axon joins the cell body at a cone-shaped elevation called the?
astraxan [27]

Answer:

B. axon hillock

Explanation:

The axon hillock is the junction where the cyton connects with the axon. There is only one axon hillock in the neuron and it is a triangular depression of cell boy to the axon. The axons receives impulse from cyton carry to the different parts of the body. The axon hillock is also called initial segment. Because action potential starts here.

Myelin sheath is the cover or layer around the axon and helps in saltatory movement of impulse. The propagation of impulse is fast in myelinated neurons than the non-myelinated neurons.

The neurolemma is the neural membrane of the neurons. It is like the plasma membrane of the cell. The outer covering of neurons is called neurilemma.

Axon collateral is the end of the axon where axon terminals arise. They carry impulse and transmit to the synapse.

4 0
3 years ago
Item: If a piece of lab equipment is not working properly you should
zhenek [66]

Answer: Stop the experiment and tell your science teacher.

Explanation: should never leave the broken item without telling the teacher, don't try to fix something that you don't have permission to, don't keep using broken equipment

4 0
4 years ago
Is MRSA a eukaryotic or prokaryotic structure?
Sergeeva-Olga [200]

MRSA is a prokaryotic structure

6 0
3 years ago
Which of the following causes macromolecules to be classified as organic molecules? carbon hydrogen nitrogen oxygen
Tamiku [17]
<span>Carbon is the answer you are looking for. However, not all carbon containing molecules are organic. Examples being carbon oxides such as CO (carbon monoxide) and CO2 (carbon dioxide). Some Chemists classify organic compounds as having a C-H bond present but this is not completely correct as this excludes molecules like benzenehexol (benzene with an alcohol group on each carbon rather than a hydrogen) which are considered organic. A solid definition of an organic molecule is not certainly agreed. Just remember that: all organic molecules contain carbon but not all carbon containing molecules are organic.</span>
6 0
3 years ago
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