True or false: vitamin b12 is stored in the liver.

Does each cell type in the body have different genes along those chromosomes?

In humans, albinism is a recessive condition caused by mutations in genes involved in the production of melanin, a skin pigment. In Americans of European ancestry, albino individuals occur at a frequency of about 1 in 100,000.

If an E. coli cell has a surface area-to-volume (S/V) ratio of 4.5, and a Pelagibacter ubique has an S/V ratio of 22, which cell will be able to exchange nutrients and wastes with the environment more efficiently?

Scientific knowledge is based on all of these excepta) rigorous testing. b) small sample sizes. c) publication and peer review. d) acceptance in the scientific community.

You have isolated a mutant strain of Bacillus subtilis (which you designate wimP) whose endospores can be killed by boiling water.

What do the fossil skeletons tell us about the evolution of today's whales?

1. How might a finch population evolve if these tough seeds were the main food source compared to tiny insects? Why?

A population of red squirrelfish breeds and produce offspring, 75% are still red but 25% are yellow. this variation in the color of the squirrelfish can be explained bya) the presence of a mutagen in the environment that caused a color change. b.

During the process of meiosis, how many haploid cells are formed from the original diploid cell?

A researcher identified a bacterial enzyme that is essential in the breakdown of glucose. The researcher wants to test a potential antibiotic that acts on the newly identified enzyme.