Proteins are linear chains of amino acids that are specified by codons found on DNA. How many nucleotide bases form one codon?

Select one:

3

4

2

1

What is a niche? i need answers!

Solar, geothermal, and tidal energy are forms of A) renewable resources B) biomass C) nonrenewable resource D) fossil fuels

Darwin noticed that birds that were good at finding scarce food in the winter had a better chance of survivng and producing offspring. What did he call his struggle for existence?

During meiosis, chromosomes will split into daughter cells randomly, making each gamete unique this is called what?

Chlorofluorocarbons (CFCs) were once commonly used in spray cans and refrigerators. Which goal is being achieved by bans on these chemicals?

A prokaryotic operon is composed of a series of adjacent genes under the control of

A chronic liver disease caused by excessive alcohol consumption is known as: A Cardiac sympathy B Cirrhosis C Pancreatitis D Parkinson's

What characteristics classify organisms as animals?

The actual exchange of materials between the blood and the cells of the body occurs in the

What is there an abundant of in an animal hair