Which of the following macromolecules is not used as an energy source for cellular respiration or fermentation?

A.

Carbohydrates

B.

Lipids

C.

Nucleic Acids

D.

Proteins

Both of these pups are from the same litter. Notice their both have brown eyes. What do you know about the eye color of the parents, all dogs have brown eyes, both of the parents must have brown eyes, dogs inherit their eye color from their mom, at

The human heart is an organ that is made up of cells. Not all of the cells that make up the heart are identical, however.

Which organelle is used to transport compounds throughout the cell? A. Ribosome B. Endoplasmic reticulum C. Nucleus D. Mitochondria

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. Explain how this might occur, and if it would be dangerous to the individual.

Which activity is most likely a result of a sudden unexpected change in the environment

How is a warm front different from a cold front? A. Warm fronts cause snow flurries in the winter, while cold fronts cause several days of rainy weather. B.

Which statement best describes messenger RNA? [Multiple Choice] A. It transfers polypeptides to the nucleus. B. It's chemically more complex than DNA. C. It had one Oxygen atom less than DNA. D. It's composed of a single strand of nucleotides.

An allele that masks another allele is known as

Is there penicillin in acyclovir

Noah wants to show the largest source of carbon on Earth for his school project. According to his research, in which form is most of the carbon on Earth stored?