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VikaD [51]
2 years ago
12

Scientific Discoveries

Biology
2 answers:
photoshop1234 [79]2 years ago
5 0

Answer:

B

Explanation:

I got it right :D

kirza4 [7]2 years ago
4 0

Answer:

B.

Explanation:

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Which portion of a reflex arc is most likely to be located entirely within the central nervous system?.
Rus_ich [418]

Answer:

interneuron.

Explanation:

The interneuron is most likely to be located entirely within the central nervous system.

4 0
2 years ago
What are some of the problems associated with aquaculture?
ch4aika [34]

Answer:

Explanation:

Pollution: The farming of marine fish, crustaceans and even bivalves produces waste in the form of fecal matter and unused feed. These largely nitrogen-based wastes can cause oxygen depletion in coastal environments and a net loss of marine productivity in certain coastal areas.

7 0
3 years ago
1. What causes the autorhythmicity or action potentials of the nodal cells? a. A decrease in chloride permeability b. A gradual
Sveta_85 [38]

Answer:

The correct answer will be option-C

Explanation:

The rhythm of the heartbeat is controlled by the pacemaker of the heart called the sino-atrial node.

The SA node generates action potentials which trigger the contraction and relaxation of the atrium and ventricles. The membrane potential generation initiates by the depolarization of the cell membrane when the L type of Ca⁺² ions opens up and calcium ions enter the cell.

This depolarizes the cell until the potential threshold is reached which lies between the -40 and -30 mV.

Thus, Option-C is the correct answer.

5 0
3 years ago
How many chromosomes does an individual with Turner syndrome have? (A)4n (B)2n + 1 (C)n + 1 (D)n – 1 (E)2n – 1
andrew11 [14]
In your question that ask to find out or to select which of the following among your choices does and individual with a Turner Syndrome and we all know that this is one of the disease that has a chromosomal descripancies and the answer is B. 2n-1
8 0
3 years ago
What chemical gets released at the end of neuron to transmit an impulse to the next neuron?
ioda
The transmission of an impulse is made possible first by electric signals propagating within a neuron. Then, at the end of the axon called a synapse, chemical substances called neurotransmitters get released to transmit the message. These neurotransmitters then attach to chemical receptors in the following neuron. 
8 0
2 years ago
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