As an organism's cells grow older or become damaged, it is necessary for the organism to replace them. How does the organism get new cells?

Archaea differ from bacteria in that archaea A) Have diverse cell wall compositions B) Lack nuclei C) Use organic compounds for food D) Reproduce by binary fission E) Are prokaryotic

Was the allele for white fur ever fully eliminated from the gene pool of the population? Explain why you think the allele would or would not eventually be eradicated from the population.

In 1986, hundreds of islands were created out of hilltops when venezuela was flooded because of a closed dam. on all of these new islands, the top predators in the food chain, such jaguars and eagles, either fled or died out.

As blood enters a nephron it flows through a network of capillaries known as

Centromeres of sister chromatids disjoin and chromatids separate. True or False

Snails are example of

Almost all the water and carbon dioxide in the atmosphere is in the?

Are trilobite fossils found in Cambrian rocks?

8. List at least 5 new discoveries about viruses.

The phospholipid molecule has two parts, the polar end and the bipolar end. True or False?