Explanation

Humans have 23 pairs of chromosomes, 46 in all: 44 autosomes and 2 sex chromosomes.

Explanation

Alternative forms of a gene which occupy the same position on a chromosome are called alleles.

For example, tallness is a character that is expressed by T and t alleles.

Explanation

The longest cell in animals is the nerve cell.

Nerve cells are also known as neurons and in the human body, they can be up to 3 feet long.

Explanation

The main difference between chordates and hemichordates is the presence of a notochord.

Chordates possess a notochord (a flexible rod-like structure that supports the body)

Explanation

Epinephrine and norepinephrine are secreted by the adrenal medulla and play a role in the fight-or-flight response,

Whereas the hypothalamus secretes dopamine and inhibits the release of certain anterior pituitary hormones.

Explanation

The human body has 23 pairs of chromosomes, 22 of which are autosomes and 1 sex chromosome.

Explanation

On the right side of the heart, the right atrium and ventricle work to pump oxygen-poor blood to the lungs.

On the left side, the left atrium and ventricle combine to pump oxygenated blood to the body.

The heart consists of four chambers in which blood flows.

Blood enters the right atrium and passes through the right ventricle.

The right ventricle pumps the blood to the lungs where it becomes oxygenated.

Explanation

The study of functions and activities of organisms and their parts is known as. Physiology.

Explanation

The study of the interaction between organisms and their surroundings is called ecology.

ecology that deals with the study of interactions between biotic and abiotic factors of the environment

Explanation

In the normal resting state of humans, most of the blood glucose burned as "fuel" is consumed by the brain.

The brain relies primarily on glucose for energy and consumes a significant portion of the body's glucose, even at rest.