What is a substrate?

A.) a molecule that changes state

B.) a place where the reaction occurs

C.)

D.) a reactant that is catalyzed by an enzyme

When might an organism rely on fermentation to produce the energy it needs?

In a population of gerbils, long hair (H) is completely dominant over short hair (h). If 18% of the population has short hair, calculate the percentage of the population that is expected to be heterozygous (Hh) ...?

The discovery of cells is most directly linked to the a. development of the microscope. b. early studies of disease and its causes. c. observations of large, unicellular organisms. d. reproduction of organisms in a lab setting.

What is shown on the graph a) exponential decay of a population

Why are atoms of lithium, sodium, and potassium almost never found alone in nature

Which experiences higher average tempertures than the other biome a) taiga b) alpine tundra c) tropical seasonal forest d) temperate decidiuous forest

Phosphorus is found only in the earth's crust. where is the lithosphere

After teaching a group of students about fertilization, the instructor determines that the teaching was successful when the group identifies which as the usual site of fertilization? a. Fundus of the uterus b. Endometrium of the uterus c.

Which is a basic unit of a sugar molecule? monosaccharide nucleotide fatty acid amino acid

What were the main challenges facing investigators who were collecting evidence in the case