Match the following items with the correct phrases.
_______1. Enable certain strains of Neisseria gonorrhoeae to adhere to the inner walls of the urethra.
_______2. Enable Streptococcus pneumoniae to avoid being phagocytized early in the infection.
_______3. A virulence factor specifically associated with Streptococcus pyogenes.
_______4. Enable some bacteria to penetrate deeper and deeper into tissues.
_______5. Enable some staphylococci and streptococci to dissolve clots.
a. capsules
b. pili
c. M-protein
d. kinases
e. hyaluronidases
1. b. pili
2. a. capsules
3. c. M-protein
4. e. hyaluronidases
5. d. kinases
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Which of the following lists the female reproductive structures that sperm will pass through on their way to fertilize an oocyte, in the correct order?
a. cervix.. vagina..oviduct...ovary b. cervix...oviduct...vagina...uterus c. uterus...cervix...vagina...ovary d. vagina...cervix...uterus....oviduct
What does a gametophyte produce?
A. Diploid gametes B. Haploid spores C. Diploid spores D. Haploid gametes
You have a freshly prepared 0.1 M glucose solution. Each liter of this solution contains how many glucose molecules?
A) 6.02 × 1023 B) 3.01 × 1023 C) 6.02 × 1024 D) 6.02 × 1022
In a classic experiment from the 1930s, a biologist conducted selective breeding experiments involving maze-running behavior in rats
He repeatedly bred together males and females that made the fewest mistakes, and he also bred together males and females that made the most mistakes. After eight generations, all mice that descended from "maze-smart" parents were better at running the maze than all mice that descended from "maze-dumb" parents. This study indicates that A) rats move through a maze randomly. B) trial-and-error learning in rats appears to have a genetic component. C) maze running is a purely learned behavior. D) nothing can be concluded about maze-running behavior in rats. E) maze running is a purely innate behavior in rats.