The only cytoplasmic organelles besides nuclei that contain DNA are the ____________________. What will be an ideal response?
ANS: mitochondria
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Simple diffusion is defined as the movement of
What will be an ideal response?
Which of the following is the probable basis for the
evolution of mitochondria and chloroplasts? a. Cells eat each other. b. Light is an energy source. c. ATP can carry energy. d. Oxygen is a by-product of photosynthesis. e. Energy can be transformed from one form to another.
A nosocomial infection is
A) Always present but inapparent at the time of hospitalization. B) Acquired during the course of hospitalization. C) Always caused by medical personnel. D) Only a result of surgery. E) Always caused by pathogenic bacteria.
T-helper cells are important in augmentation of which of the following
I. Antibody production II. Mixed lymphocyte reaction III. Delayed-type hypersensitivity reactions A. I only B. II only C. I and II only D. II and III only E. I, II and III