True or false some lymphocytes live anchored to an object or another plant

In most vertebrate neurons, an action potential arrives at the axon terminal and causes the release of chemical messenger molecu

erik [133]

The correct answer is option d, that is, neurotransmitters.

A neurotransmitter refers to a chemical component, which is discharged at the terminal of a nerve fiber by the introduction of a nerve impulse, and by diffusing across the junction or synapse. It helps in the transfer of the impulse to another muscle fiber, nerve fiber, or some other composition. Acetylcholine is a kind of neurotransmitter, that is, used by neurons in the CNS and the PNS in the control of activities ranging from heart rate and muscle contraction to digestion and memory.

5 0

3 years ago

Which of the following factors would NOT be a source of competition between a wolf and a bear?

jeyben [28]

I believe the answer should be mates...(2)

4 0

3 years ago

Atrazine is an herbicide that prevents plant growth by inhibiting photosynthesis. Atrazine works by binding to proteins in the e

Sauron [17]

It prevents the formation of ATP and NADPH, which are needed by the light-independent reactions to make sugars. Thus, the correct option is D.

The herbicide atrazine binds to the D1 protein and prevents plastoquinone from binding. By preventing plastoquinone from binding, the photosynthetic transport of electron is disrupted, putting the generation of ATP and NADPH in the chloroplast at risk.

<h3>What are herbicide?</h3>

Herbicides are chemicals that are used to control or manage unwanted vegetation. Herbicides are most commonly used in row-crop farming, where they are treated before or during planting to increase crop productivity while reducing other vegetation.

This results in the plant's inability to fix carbon dioxide and provide the nutrients it needs to survive. A halt in electron transmission causes oxidative stress and the generation of radicals, which leads to rapid cellular death.

For more information regarding plastoquinone , visit:

brainly.com/question/14142841

#SPJ1

3 0

1 year ago

During earth's early history,

Juli2301 [7.4K]

option 2 seems appropriate for me!

3 0

2 years ago

Isovolumetric relaxation and ventricular filling (two phases of the cardiac cycle) take place during __________. Isovolumetric r

Helga [31]

Answer:

Option B, ventricular diastole

Explanation:

Ventricular diastole also termed as ventricular relaxation consists of two phases. In the first phase, the following set of events takes place –

a) Relaxation of ventricle muscles

b) Reduction in pressure of blood within the ventricles

c) As this reduced blood pressure gets lower than that of pressure with in the pulmonary trunk and aorta, blood starts flowing back towards the heart.

d) A small dip in the blood pressure is observed at this stage

e) Volume at this stage remains constant as the atrioventricular valves remain closed

f) This phase is known as isovolumic ventricular relaxation phase

In the second phase, the following set of events takes place –

a) Relaxation of ventricular muscle

b) Dropping of pressure of the blood within the ventricles lower than that of pressure of blood in the atria

c) Blood starts flowing from atria into the ventricles thereby opening the tricuspid and mitral valves

d) Both the heart chambers chambers are in diastole,

e) Atrioventricular valves are open

f) Semilunar valves remain closed

Hence, option B is correct

3 0

3 years ago