Several serious fungal infections affect the lower respiratory system mainly because fungi
a) are dimorphic.
b) are opportunistic.
c) produce airborne spores.
d) produce toxic proteins.
Ans: c) produce airborne spores.
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Microsomes are
A) too small to be seen with an electron microscope. B) artifacts generated during homogenization of cells. C) organelles through which electrons cannot pass. D) organelles of eukaryotic cells. E) structures observed in cyanobacteria.
A developing embryo has a deformity in the development of its muscles. What germ layer
might have carried a mutation that led to this deformity?
a. mesoderm b. endoderm c. ectoderm d. protoderm
Where are chondrocytes located?
a. woven through collagen b. in muscle fibroblasts c. in cartilage lacunae d. within blood plasma
Four of the five choices listed below are types of
cells in plants. Select the exception. a. cork b. parenchyma c. cuticle d. sieve tube e. tracheid