How do exons and introns differ?

Exons code for proteins.

Introns code for proteins.

Exons do not have a code.

Introns do not have a code.

An organism that reproduces using binary fission, a type of asexual reproduction, creates an identical copy of a cell when A. the cell's DNA replicates and the cell divides, giving each cell an identical copy of DNA. B.

Muscle tissue exerts force by becoming cooler. longer. shorter. warmer.

Which phase of cardiac action potential is caused by closure of the fast sodium channels? phase 0 phase 1 phase 2 phase 3?

Peroxisomes neutralize free radicals. What does that mean?

Where is exponential growth on a logistic curve

Describe he characteistics of science

Which type of volcano does not form a mountain

The process by which green plants make food is called a. photosynthesis. b. cell division. c. mutation. d. fertilization.

This is a molecule that contains both amino and carboxylic acid functional groups. They are the building blocks of protein.

Some of the most primitive organisms found in the fossil record are