The presence of DNA is important for cellular metabolic activities because DNA

A. Directs the production of enzymes

B. Is a structural component of cell walls

C. Directly increases the solubility of nutrients

D. Is the major component of cytoplasm

True or false: Adaptive immunity can be acquired in new born babies through the placenta and breast milk but it doesn't last long.

What is left behind after a star with one more stellar masses has died

Wind speeds increase higher up from the Earth's surface because

Which of the following is the main disadvantage of laboratory experiments? a. elimination of causal factor is increased b. the laboratory setting may not be a good representation of the real-world setting c. concomitant variation is not possible d.

People are most successful at noticing an analogous relationship between problems if they focus on

Animal cells are bathed in an isotonic fluid, and plant and bacteria cells have a cell wall. What does this protect the cell membrane from?

Explain why latin is the basic for many scientific names

What is incomplete penetrance and what causes it? incomplete penetrance means the heterozygote has an intermediate phenotype between the two homozygous phenotypes because of interactions with environmental factors.

Support, protection of soft tissue, mineral storage, and blood formation are functions of what system?

How is a person with a body mass index of 31.2 classified? underweight normal weight overweight obese?