When the herd is moving in direction the handler wants what should the handler do

A scientist discovers a new organism. The organism is multicellular, eats other organisms for food, and moves freely from place

Luda [366]

Animalia kingdom. Hope this helps! :)

5 0

3 years ago

Read 2 more answers

Increases and decreases of the heart rate result from changes in the activity of the _______. A. medulla oblongata B. thalamus C

pantera1 [17]

Option A. Increases and decreases of the heart rate result from changes in the activity of the medulla oblongata

What is medulla oblongata ?

Medulla oblongata, also called medulla, the lowest part of the brain and the lowest portion of the brainstem.
The medulla oblongata is connected by the pons to the midbrain and is continuous posteriorly with the spinal cord, with which it merges at the opening (foramen magnum) at the base of the skull.
The medulla oblongata plays a critical role in transmitting signals between the spinal cord and the higher parts of the brain and in controlling autonomic activities, such as heartbeat and respiration
The medulla is divided into two main parts: the ventral medulla (the frontal portion) and the dorsal medulla (the rear portion; also known as the tegmentum).
The ventral medulla contains a pair of triangular structures called pyramids, within which lie the pyramidal tracts.
The pyramidal tracts are made up of the corticospinal tract (running from the cerebral cortex to the spinal cord) and the corticobulbar tract (running from the motor cortex of the frontal lobe to the cranial nerves in the brainstem)

To know more about medulla oblongata, refer:

https://brainly.in/question/123107

#SPJ4

7 0

2 years ago

What element is found proteins but not in carbohydrates or fats

Gnoma [55]

That element is Nitrogen.

4 0

3 years ago

Read 2 more answers

A scientist observes that, when the pH of the environment surrounding an enzyme is changed, the rate the enzyme catalyzes a reac

vredina [299]

Answer:

A- A pH change can cause the enzyme to change its shape

Explanation:

A rise or fall in the pH of the medium from the optimum of pH 7 usually affect the enzymes' active sites of and therefore the shape and the rate of enzyme activity.

Assuming the pH is too low, the enzyme medium becomes acidic;Acidosis. The high Hydrogen ions concentration interacts with the R-groups of the amino acids moiety of the enzymes, this interaction affects the ionization of the R-groups, disrupting the ionic bonding holding these R-groups in shape.

This results in loss of the 3-Dimensional shape arrangements of the protein molecule and therefore of the active sites. Since active sites of enzymes determines the specificity of the enzymes substrate- complex to give enzyme-product complex, the catalytic activity of the enzymes decreases, the rate of reaction decreases,and products formation stops, and the reaction also stops.

The same is applicable to extremely high pH=Alkalosis.

However, the effective buffer system of the body prevents this scenarios from happening in real sense in the body. Through mopping by the haemoglobin, excretion by the kidney, etc

7 0

3 years ago

Long-term activation by nuclear receptors differs from the more transient membrane receptor signaling for what reason

Rama09 [41]

I have no idea but i think because long term activation is long term rather than nuclear. this is wrong

6 0

2 years ago