In 1927, the geneticist Hermann Muller exposed flies to ultraviolet light. He found that the flies’ offspring displayed many mutations. He concluded that the ultraviolet rays caused chromosome breakage, which caused the mutations?

What is his independent variable?

Mrs. Hathaway sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the dependent variable.

What amount of sunlight makes pea plants grow tallest? What is the independent variable?

Diabetes is a disease affecting the insulin producing glands of the pancreas. If there is not enough insulin being produced by these cells, the amount of glucose in the blood will remain high. A blood glucose level above 140 for an extended period of time is not considered normal. This disease, if not brought under control, can lead to severe complications and even death.

Which of the individuals, if any, have diabetes?

For single-celled organisms, _____ is

mostly an increase in size.

Multicellular organisms go through a

process called __________, where cells

divide and differentiate into different

kinds of cells.

The combination of chemical reactions through

which an organism builds up or breaks down

materials as it carries out its life processes is called ...

Identify the characteristic: Green plants produce their own food through the process of photosynthesis.

Fire is living because it has 6 of the 10 characteristics of life.

True or False: Individual organisms can adapt to their environment, but only species can evolve.