Which of the following is not a characteristic of a parenchyma cell?

a. the most abundant type of plant cell

c. thin, flexible cell walls

b. thick, rigid cell walls

d. large central vacuoles

How often does an adult female release an ovum from one of her ovaries

Discuss the relationship between mitosis and cytokinesis. what would be the result is one happen without the other?

Cabbages have 18 chromosomes. How many chromosomes do each of the daughter cell produced by mitosis have?

What functional groups will be joined together if alanine and serine molecules combine to form a single molecule? (a. an amino group and a carbonyl group.) (B. an amino group and a methyl group.) (D. a hydrogen atom and a methyl group.)

Impulses are conducted by myelinafed axons by jumping from node to node in a process called a (n): a. action potential. b. excitatory postsynaptic potential. c. saltatory conduction d. monosynaptic reflex e. depolarization.

Why is carbon essential to all known life on Earth?

Why are only inherited traits involved in the process of evolution?

What are uses of nuclear power?

What is the ultimate energy source for the producers

Which process is a form of mechanical weathering? A. Hydration B. Carbonation C. Exfoliation D. Oxidation