The twisted shape of DNA is called a.

a. double ladder

b. double helix

c. nucleotide

d. base pair

How is the DNA in a prokaryote different from the DNA in a eukaryote? A. Eukaryotes do not have alleles. B. Only prokaryotes are diploid. C. Prokaryotes do not have genes. D. DNA is in a nucleus in eukaryotes.

Fter delivering a shock with the aed to a patient in cardiac arrest, you should:

What types of substances can pass through the lipid bilayer?

What vessels carries oxygenated blood?

Which of the following structures would be considered an accessory organ to the digestive system and NOT part of the alimentary canal? (a) Pancreas (b) Esophagus (c) Stomach (d) Small Intestine

A cell begins to send out incorrect chemical signals to neighboring cells. During which phase of the cell cycle did the cause of the change most likely happen? G1 phase G2 phase M phase S phase

Which of these organisms needs care from its parents after birth? A. frog B. turtle C. mouse D. snake

Variant Creutzfeldt-Jakob disease, listeriosis, anthrax, and E. coli 0157-H7 infections all have which of the following in common? a. All four diseases can be transmitted from cattle to humans b. All four diseases are caused by bacteria c.

Which layer of skin contains a large amount of adipose tissue?

1. The role of an organism in the ecosystem 1 Called to species niche mos habitat environment