Animals: Osmoregulation & Excretory System

In a hypotonic environment, water would flow ...

• into the cell.

• out of the cell.

• equally into and out of the cell.

Tags

NGSS.HS-LS1-3

In an isotonic environment, water would flow...

• into the cell.

• out of the cell.

• equally into and out of the cell.

The excretory system rids the body of ___________ waste products.

Fish make uric acid as their nitrogenous waste product.

• True

• False

Answer explanation

Fish make ammonia, which is toxic, but can be easily diluted once excreted out into their environment. Birds make uric acid.

Which of the following has the four steps of the excretory system in order?

• Filtration, Reabsorption, Secretion, Excretion

• Excretion, Secretion, Reabsorption, Filtration

• Filtration, Reabsorption, Excretion, Secretion

• Secretion, Excretion, Filtration, Reabsorption

The nephron is the functional unit of the kidney.

• True

• False

Tags

NGSS.HS-LS1-3

Hypertension (high blood pressure) affects the glomerulus.

• True

• False

Answer explanation

The glomerulus is made up of capillaries through which filtrate is pushed out of. High blood pressure can affect these thin blood vessels.

Tags

NGSS.HS-LS1-3

Osmolarity is the measurement of the concentration of a solution.

• True

• False

If the solvent in a solution is increased and the solute is kept constant, does the concentration increase or decrease?

• Increase

• Decrease

If the solute in a solution is decreased and the solvent is kept constant, does the concentration increase or decrease?

• Increase

• Decrease