Organism's traits depend on the___

You experimentally apply a toxin to a muscle and find that it does not contract when you electrically stimulate the motor neuron

Furkat [3]

The question provided is not complete as it lacks the group of choices, however the group of choices are given as follows:

A. A contraction fails to occur because an action potential is not generated in the muscle cell.

B. A contraction fails to occur because this toxin directly prevents ion release from intracellular stores.

C. A contraction fails to occur because neurotransmitter release by the motor neuron is blocked at the neuromuscular junction.

D. A contraction fails to occur because this toxin prevents cross bridge formation and thereby directly prevents contraction.

E. C and D are both true

Answer:

The correct answer is option A : A contraction fails to occur because an action potential is not generated in the muscle cell.

Explanation:

A muscle contraction takes place when action potential bring to muscles by nerves, which is traveled with the help of motor neuron and imitated the muscle contraction.

Acetylcholine or Ach is a chemical messenger to bring the nerve impulses between a nerve and a muscle. If the receptor is block with applying toxin muscle will not contract as ACh will not be able to propagate the nerve impulse to the muscle so there will be no action potential.

The correct answer is option A : A contraction fails to occur because an action potential is not generated in the muscle cell.

5 0

2 years ago

Where does cellular respiration occur in the human body? I.e., what part of the body

Ahat [919]

Answer: cellular report occurs in the respiratory system or the lungs and nasal cavity

explanation: it happens because when we intake oxygen, it reacts with glucose present in our body. this reaction gives out carbon dioxide, water and energy as products.

:))

7 0

3 years ago

A population of squirrels living in a little habitat covering 150 hectares is at 80% of the carrying capacity of 1500. Assuming

Kay [80]

Population density =number of individual divided land area
land area should be in square kilometers
therefore 120 ha =120 x0.01=1.2 square kilometer since 1 ha=0.01 kilometer square
total population= (80 x 1500)/100=1200
population density is therefore=1200/1.2=1000

7 0

2 years ago

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Which of the following is an example of parasite?<br> Molds<br> Mosquitoes<br> Yeasts<br> Zika

Svetlanka [38]

Answer:

zika is a parasite

Explanation:

this is a common parasite but if you want my personal opinion, the parasite is none of these, its my younger brother.

4 0

2 years ago

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1.solve for p

Mnenie [13.5K]

<h3>1. <u>Answer;</u></h3>

<em>p =-3/2p</em>

<h3><u>Solution;</u></h3>

To solve for P in the equation;

= 3(p + q ) = p

We open the brackets;

= 3p + 3q = p

Then, we combine the like terms together, we get;

<em> 3p - p = -3q</em>

<em> Therefore; 2p = -3q</em>

<em> hence; p = -3/2q. </em>

<h3>2. <u>Answers</u>;</h3>

<em>b = 19/2</em>

<h3><u>Solution;</u></h3>

To solve for b when the value of a = 3

4a = 2b - 7

we substitute 3 with a in the equation

<em>Then, make b the subject</em>

<h3>3. <u>Answer;</u></h3>

<em>r =d/t</em>

<h3><u><em>Solution;</em></u></h3>

To solve for r

d= rt.

In order to get r, we divide both sides by t

<em>d/t = rt/t</em>

<em>r = d/t</em>

<h3>4. <u>Answer;</u></h3>

<em>Width = 30 units</em>

<h3><u>Solution;</u></h3>

The width of a rectangle with a given perimeter of 90 and length is 15.

The perimeter of a rectangle is given by;

Perimeter= 2(Length + Width)

Thus;<em> Perimeter = 90 , length=15 </em>

<em> 90 = 2 (W + 15)</em>

<em>Dividing both sides by 2,</em>

<em>45 = w + 15 </em>

<em>Subtracting from both sides;</em>

<em>W = 45 -15 </em>

<em>W = 30 </em>

Therefore,<em><u> the width of the rectangle is 30 units</u></em>

5 0

3 years ago

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Organism's traits depend on the____in its cells.