Which one of the following is characteristic of both living organisms and non-living material?
A. the capacity to evolve B. the ability to reproduce
C. complexity, with spatial organization on several levels
D. the ability to change in response to the environment
E. obeying the basic laws of chemistry and physics
Answer: E
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How does the body respond when it first encounters a foreign particle or bacterial pathogen?
What will be an ideal response?
Movement in bacteria
A. is directly to or away from a stimulus. B. relies on the beating of cilia. C. is often referred to as run and tumble. D. may involve pili. E. is often referred to as run and tumble AND may involve pili.
Liver cells help clean your blood with a wide range of digestive enzymes that hydrolyze toxic molecules. Which organelle in the cells would be responsible for removing these toxins from the blood?
A. vesicle B. lysosomes C. mitochondrion D. Golgi apparatus E. peroxisomes
How are the bases of tRNAs modified?
a. They can be directly altered chemically. b. They can be edited using a guide RNA. c. A base may be removed and replaced with a different base. d. Choices A and C are true. e. Choices A, B, and C are all true.