Movement of a molecule against a concentration gradient is

a. simple diffusion.
b. facilitated diffusion.
c. osmosis.
d. active transport.
e. passive transport


D

Biology & Microbiology

You might also like to view...

In 1953 the structure of DNA was determined to be a ________

Fill in the blank with correct word.

Biology & Microbiology

What harvests energy from food molecules to make ATP?

A) Chloroplasts B) Mitochondria C) Nucleus D) Lysosome

Biology & Microbiology

which foods good source of fiber

What will be an ideal response?

Biology & Microbiology

Diseased or injured tissues produce and release ___ growth factor signals.

a. metastatic b. angiogenic c. blood vessel d. dilated

Biology & Microbiology