Which of the following characteristics, structures, or processes is common to bacteria and viruses?
A) metabolism
B) ribosomes
C) genetic material composed of nucleic acid
D) cell division
E) independent existence
Answer: C
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Cells at shoot tips maintain their totipotency due to the expression of:
A. meristem identity genes. B. growth regulation genes. C. lateral growth genes. D. S-regulation genes. E. nodal expression genes.
This hormone binds to a plasma membrane
receptor and has its effect by way of a second messenger. This hormone is
a. aldosterone. b. calcitonin. c. progesterone. d. cortisol. e. more than one of these
A mutant plant that does not exhibit phototropism is found. This plant has a mutation involving what
hormone? What will be an ideal response?
The pentose phosphate pathway produces ________.
A. glyceraldehyde 3-phosphate B. NADPH C. CO2 D. All of the choices are correct.