Why is food digested?

a

to build molecules

b

to obtain energy and building materials for cells

c

to make polymers

d

to control chemical reactions

e

all of the above

Research has shown that plants might chemically change their environment. The roots of certain plants release many chemicals. Some chemicals made by plants can kill nearby plants or discourage herbivores from eating them.

Young tadpoles breath like fish. what structure enables them to breathe underwater A. tracheae B. skin C. alveoli D. gills

Which molecule do plants use to store extra glucose? A. Glycogen B. Myosin C. Lipid D. Starch

How is DNA used as a template to make proteins?

Which of the following describes a relationship of parasitism? A. Oxpecker birds eat parasitic ticks off the backs of zebras. B. Birds feed off the insects that are stirred up from the grasses as cattle move through. C.

What does cellulose do in plants

When will natural selection occur apex?

The cell spends 90% of its time in what phase of the cell cycle?

Which of the following is an example of an organ-specific autoimmune disease? rheumatoid arthritis psoriasis Addison disease myasthenia gravis

Which technique is most effective for viewing solid organs of the abdomen and soft tissues wherever the signal will not be stopped by intervening bone or air?