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A) Fimbriae
B) Sex pili
C) Periplasmic flagella (axial filaments)
D) Cilia
E) Flagella
B) Sex pili
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Freshwater fish are in a hypotonic environment. What keeps the cells in their body from lysing?
A. Freshwater fish have chloride channels that actively move chloride out of the gills into the surrounding water, allowing water to move into the gills. B. Freshwater fish have chloride channels that actively move chloride out of the gills into the surrounding water, allowing water to move out of the gills. C. Freshwater fish have chloride channels that actively move chloride into the gills, allowing water to move into the gills. D. Freshwater fish have chloride channels that actively move chloride into the gills, allowing water to move out of the gills.
Which major tissue category often has more extracellular matrix material than cellular material?
a. epithelial tissue b. connective tissue c. muscle tissue d. nervous tissue e. adipose tissue
Which of the following is an aggregate fruit?
a. peas b. acorns c. pineapples d. strawberries e. cherries
In the human, which of the following events would occur over the longest period of time?
a. sperm production b. cleavage c. fertilization d. gastrulation e. growth and tissue specialization