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fredd [130]
3 years ago
7

Predict what would happen if the calcium ion channels in the axon terminal were blocked?

Biology
2 answers:
DedPeter [7]3 years ago
6 0
Release of a neurotransmitter across the synapse is triggered by the entry of Ca++ into the presynaptic axon. No Ca++ entry means no transmission across the synapse.
777dan777 [17]3 years ago
6 0

Answer:

If the calcium ion channels in the axon terminal were blocked, then no synaptic transmission occurs.

Explanation:

The synapse has 2 parts one is post synaptic cleft and other is pre synaptic cleft. The pre synaptic cleft contains synaptic vesicles which  have neurotransmitters. These neurotransmitters are in the inactive form.

When the calcium ion is coming and bind with the vesicle, the neurotransmitter gets activated. Then the vesicle binds with another protein and releases the neurotransmitter to the post synaptic vesicle. Thus information goes from pre synaptic cleft to post synaptic cleft and synaptic transmission occurs.

If the calcium ion channel is blocked, no calcium ions come into the axon terminal, the neurotransmitter can't active and no synaptic transmission happens.

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RNA and DNA have different sugars in their backbones. Which sugar below belongs in DNA?
azamat

Answer:

B, deoxyribose means it has fewer oxygen molecules than ribose, choice B has fewer oxygens.

Explanation:

Dna stands for deoxyribose

8 0
2 years ago
Which of the following is NOT a reactant of photosynthesis?
Irina-Kira [14]

Photosynthesis produces both glucose (sugar) and oxygen as products in the chemical reaction. Plants use photosynthesis to take in sunlight, water, and carbon dioxide as reactants and produce glucose for energy and oxygen. The reactants for photosynthesis are light energy, water, carbon dioxide and chlorophyll , while the products are glucose (sugar), oxygen and water.

I hope this helps =)

5 0
2 years ago
Can someone help with the labels for this ?
JulsSmile [24]

Answer:

Refer to the attached image for correct labeling.

Explanation:

  • The diagram is of a plant cell and its organelles.
  • The nucleus houses the genetic material and controls all life processes.
  • A plant cell contains one large vacuole in the center that stores water and nutrients.
  • Chloroplast is the site for photosynthesis. It captures light and utilizes it and carbondioxide to produce glucose.
  • Mitochondria are called the power house of the cell. Through a process called cellular respiration, they break down the glucose produced in photosynthesis into energy compounds such as ATP as well as oxygen and water.
  • The endoplasmic reticulum is the site for protein sysnthesis. It contains two parts: the rough endoplasmic reticulum (RER) which contains ribosomes that synthesize proteins and the smooth endoplasmic reticulum (SER) which packages the proteins into transport vesicles.
  • The nucleus contains the nucleolus that is the site for ribosome assembly.
  • The cell membrane is a semi-permeable membrane that covers the cell and controls cellular transport.
  • The cell wall is a hard, outer covering that protects the cell and maintains its structure and shape.

6 0
3 years ago
What happens to a sedimentary rock after tectonic plates push upwards? What would it turn into?
tester [92]
Hi, sounds like it would turn into B). Metamorphic Rock. Igneous rocks are only formed when melted rock hardens and solidifies. Sediimentary rock is formed when sediment is deposited out of air, ice, wind, gravity or even water. I Doubt it would remain a sedimentary rock so the best answer would be metamorphic rock. Hope this was correct. :)
8 0
3 years ago
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Increased poaching nearly led to the extinction of the American bison. What kind of effect does this example represent?
Mrrafil [7]

BOTTLENECK EFFECT IS THE ANSWER TO THIS QUESTION



4 0
3 years ago
Read 2 more answers
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