Maurice Wilkins and Rosalind Franklin obtained X-ray diffraction photographs that indicted that DNA has a ____________________ shape with a constant diameter Fill in the blank(s) with the appropriate word(s)

Which of the following is produced in largest numbers by the TCA cycle?

A. NADH B. FADH C. ATP (GTP) D. CO2

Molecules that convey positional information and promote developmental changes are called _______

A. morphogens B. determined C. totipotent D. apical

Ocean productivity is the amount of food produced by marine organisms and the number of organisms this food supports

Indicate whether the statement is true or false

Capillary walls consist of

a. stratified squamous epithelium. b. simple squamous epithelium. c. simple cuboidal epithelium. d. stratified cuboidal epithelium. e. simple columnar epithelium