An organism has 40 chromosomes in each body cell. How many chromosomes are in each of the organisms sex cells?

A) 10

B) 20

C) 40

D) 80

Give the two dates in a year during which the number of hours of darkness is equal in both the north and south pole

What cultural concerns drove marine science in the Age of Exploration?

Macroevolution occurs within a population. true or false?

What are steps we can take to lessen the impact of energy production and use on the planet?

Are peas haploid organisms?

A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein. How many kcal of energy does the cheeseburger contain

How do enzymes catalyze chemical reactions (don't just say "they lower the activation energy", give me specific mechanisms) ?

What must happen before the cell can go through mitosis? Interphase.

Belle's grandfather lives in a region where the temperature drops below 0*F at night. When belle visited her grandfather, they hiked up a hill. Belle noticed that a lot of rock had cracks in them.

The genetic condition of an organism that has two identical alleles for a given trait.