A zygote forms when a sperm cell penetrates and fertilizes an egg.

a. True

b. False

What is the fish's species

Lactase and carbonic anhydrase are examples of what type of substance?

Which of the following happens when a cell divides? Select one: a. The cell's volume increases. b. It becomes more difficult for the cell to get enough oxygen and nutrients. c. The cell has DNA overload. d.

Why might a scientist repeat an experiment if she did not make a mistake in the first food

Which is not a characteristic of acceptable fresh beef?

what is thermometric property ... ?

When fats first reach the duodenum what their presence stimulates the release of which hormone from the intestinal mucosal cell?

Ocean-dwelling chemoheterotrophic bacteria that generate energy via aerobic respiration are dependent on the presence of photoautotrophs like cyanobacteria because:

Nucleotide are composed of phosphate group, a sugar, and a nitrogenous base. DNA is made up of long strands of nucleotide. which part if the above molecule can differ between nucleotide? A. the sugar B. the phosphate group C. the nitrogen group D.

2 atp molecules are needed to start A) the krebs cycle B) gyycolysis C) the electron transport chain D) none of the above