Which cells form the stomata?

A. sieve cells

B. guard cells

C. phloem cells

D. mesophyll cells

In lizards, the gene for color and the gene for pattern are located on the same chromosome and exhibit recombination.

When people have their gallbladders removed their bodies no longer

How long lives a man

In evolutionary terms, how old is glycolysis?

Why are enzymes important? a) enzymes are complete proteins essential for good health. b) enzymes break down proteins for use in the body. c) enzymes carry oxygen to other organs in the body. d) enzymes make up muscle tissue in the body.

Why might a water table drop

How did the 1898 discovery of blood types affect society?

Which of the following is a feeding source for fens? aquifers dexfoliants exfoliants nitrates

What system includes oceans, lakes, rivers, and groundwater? a. geosphere b. hydrosphere c. atmosphere d. biosphere

Fungal spores a. are only asexually produced. b. cannot be seen in a light microscope. c. are used to identify fungi. d. are produced by molds but not by yeasts. e. are only produced under harmful environmental conditions