99 POINTS HELP!!! ASAP PLEASE!

Biology

2 answers:

strojnjashka [21]3 years ago

7 0

1. c
2. c
3. A
4. D
I dont know the answer to 5

konstantin123 [22]3 years ago

6 0

1. Which of the following is an ABIOTIC factor?

C. Rocks

2. What is an input of photosynthesis AND flows through the Carbon Cycle? *

B. Carbon Dioxide

3. Where is/can carbon be stored for long periods of time (longer than a lifetime)? *
A. In rocks

4. Where is carbon found?

D. All of the above

5. How are cellular respiration and photosynthesis related to the carbon cycle? (no multiple choice it's a written answer)

in order to live, people and animals inhale oxygen and give out carbon dioxide. Carbon dioxide is taken by plants in a process called photosynthesis and it is used in the presence of energy from sunlight to produce carbohydrates and oxygen.

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There are two properties that affect the conduction speed of an action potential along an axon: die axon's diameter and whether

Rom4ik [11]

Answer:

Axons with high diameter, and myelinated will conduct action potential faster.

Axons with low diameter but myelinated will be relatively slow in the speed of action potential transmission

Axons with high diameter and unmyelinated will be relatively slow in action potential transmission.

Axons with low diameter, and unmyelinated will conduct action potential slowly .

Explanation:

Diameter of Axon affects conduction speed of Action Potential; the thick axons with high diameter conducts action potential at a faster speed than thin neurons. This is because of the less resistance to the transmission of action potential along the thick axon. However, thin neurons with lower diameter has more resistance to the action potential conduct along the axon, thus the speed of transmission is slow.

Myelinated neuron transmits action potential faster because of jumping of action potential at the nodes of Ranvier where there is highest concentration of all channel proteins and pump proteins, Therefore action potential is conducted at a faster rate as it jumps from one node to another. This is salutatory conduction. It increases the conduct about 50 times compare to unmyelinated neuron. In neuron of human it increases the speed to 100ms-1

.Conversely, unmyelinated neurone conducts action potential slowly. About 0.5ms-1 . This is because no salutatory conduction takes place because there is no myelin interruption as Nodes of Ranvier

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