Acne results when bacterial secretions ____
a. leak into internal tissues of follicles and cause inflammation
b. flow into open skin wounds
c. are swallowed and activate the innate immune response
d. mix with sweat and become more acidic.
e. are phagocytized by macrophages
ANSWER: a
You might also like to view...
Answer the following statements true (T) or false (F)
1. A reason that some antibiotics harm bacteria but not humans is because these antibiotics inhibit enzymes only found in bacteria.
2.. Phagocytosis is a process that cells use to move large particles in through the cell membrane.
3. Receptor-mediated endocytosis is a specialized, more selective method of cell membrane transport than pinocytosis.
4. In addition to providing energy to the organism conducting photosynthesis, photosynthesis also provides raw materials and energy for heterotrophic organisms.
5. As this graph shows, photosynthesizing eukaryotes have several pigments and accessory pigments that selectively capture the green wavelengths of photons for photosynthesis.
After working several hours in a flower shop, you do not detect the smell of the roses. Why?
a. Sensory adaptation has occurred. b. Stimulus transduction has increased. c. Sensory perception has been blocked. d. Sensory summation has occurred. e. The nasal epithelium has become blocked.
If the frequency of a particular allele that is present in a small, isolated population of alpine plants decreases due to a landslide that leaves an even smaller remnant of surviving plants bearing this allele, then what has occurred?
A) a bottleneck B) genetic drift C) microevolution D) A and B only E) A, B, and C
Atomic nuclei contain protons and ________.
A. neutrons B. ions C. moles D. isomers