Catalase is an enzyme found in liver. It is used to break down hydrogen peroxide, a waste product produced by cells. Determine what characteristic of an enzyme is exhibited in the following scenarios when 5 drops of water are placed on a piece of liver, nothing happens. Later 5 drops of hydrogen peroxide are
placed on the liver, and it forms lots of bubbles.
A. optimum pH
B. Optimum temperature
C. Reusable
D. Specific substrate

How can you keep track of variables in a science experiment?

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

An example of a trait that would be considered acquired and inherited is a. a cleft chin b. muscle tone c. scar tissue d. freckled skin