Biology Flashcards

Front

What is the function of red blood cells?

Back

To carry oxygen using haemoglobin.

Front

What are the three types of blood vessels?

Back

Arteries, veins, and capillaries.

Front

What is phototropism?

Back

Growth of a plant towards light.

Front

What is the role of auxins in phototropism?

Back

Auxins accumulate on the shaded side of the plant, causing cell elongation and bending towards light.

Front

What is the difference between the CNS and PNS?

Back

CNS includes the brain and spinal cord; PNS includes nerves connecting the CNS to the rest of the body.

Front

What happens during systole?

Back

The heart contracts to pump blood.

Front

Name two types of reflex actions.

Back

Spinal reflex and cranial reflex.

Front

What is a capillary?

Back

A tiny blood vessel where substances are exchanged between blood and cells.

Front

What hormone regulates directional growth in plants?

Back

Auxin.

Front

What causes sickle cell anemia?

Back

Abnormally shaped red blood cells that block blood flow.