In a unicellular organism, the cell membrane carries out a function most similar to which structure in a human?

a. lung

b. brain

c. ovary

d. heart

Which is a plausible explanation of why some plants, such as the Japanese red maple, are not green in color?

Red color in flowers shows incomplete dominance over white. A pink flower (Rr) is crossed with a white flower (rr). What percentage of the offspring will be red? A.) 25% B.) 50% C.) 75% D.) 0%

Which process can be used to power your home? A. neither solar thermal energy nor solar electric energy B. solar thermal energy C. solar electric energy D. both solar thermal energy and solar electric energy

Betty drew the life cycle of a butterfly for a science exhibition. The life cycle showed the various stages of growth before the egg turns into a butterfly. What type of model did Betty use? A) biological B) conceptual C) mathematical D) physical

Compare the properties of the parent and daughter cells in mitosis and meiosis and explain the reason for any differences.

What do all viruses have in common?

Sheath of schwann cell containing cytoplasm is called

Job pressure is a leading stressor for american adults. a. True b. False

A green pea plant (Gg) is crossed with a yellow pea plant (gg), what is the phenotype and the genotype

Is atmospheric nitrogen easily used by plants