Which of the following is needed for cellular respiration to occur?

a. sodium

b. oxygen

c. water

d. nitrogen

A cell in the testis of a male chimpanzee (Pan troglodytes) contains 48 chromosomes. It is about to undergo meiosis. How many molecules of DNA will be present in the nucleus of the sperm cells just after meiosis? A. 96 B. 48 C. 24 D. 12

Before testing the pea plants, Mendel formed a five-part hypothesis. What did Mendel include in his hypothesis? Check all that apply.

How do flowers contribute to the reproductive success of angiosperms?

How do the circulatory and endocrine systems work together? a. Blood circulates hormones around the body c. Nerves signal endocrine glands b. Hormones keep the heart pumping d. The blood brings waste to the kidneys

When a predator feeding on certain prey is removed from the environment, which variable will most likely determine whether or not the prey will survive?

Which best describes the relationship between blood flow and lymph flow? A. Blood flows through the contraction of skeletal muscle, and lymph flows through the contraction of cardiac muscle. B.

What is one example of a primary succession

What are biological terms in order from least to greatest

In vertebrates, the speed of transmission along neurons is much faster in myelinated neurons compared to unmyelinated neurons. Which of the following is not true of transmission along myelinated neurons? A.

Who was the first suspect to be cleared of a crime by dna evidence? select one: a. oj simpson b. richard buckland c. colin pitchfork d. francis galton e. none of the above?