Acetic acid gives vinegar its sour taste. The functional group of this acid is
A. -OH
B. -NH2
C. -SH
D. -COOH
E. -CO
D. -COOH
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The term ________ is applied to strains and preparations of Bacillus anthracis that exhibit properties that enhance dissemination and use as biological weapons
A) weaponized B) virulized C) category A D) infectious
How are parasitoids different from typical brood parasites?
a. they are usually not insects b. they affect only plants c. they lay eggs inside a host, which is eventually killed d. they fool another species into caring for their young e. they usually only affect the eggs of birds
Fossil evidence places the origin of angiosperms in the early Cretaceous period, at least 130 million years ago. By 100 million years ago, all of today's major lineages of angiosperms were in place. Angiosperms make up 95% of all modern plant species. Which of the following may help explain the rapid success of angiosperms?
a. Use of the wind to disperse pollen and seeds b. Flowers and fruits help protect and disperse both pollen and seeds c. Use of the wind to disperse spores d. Use of water to disperse pollen and seeds e. Animals eating the plants helped to disperse both pollen and seeds
Homo neanderthalensis is believed to be a direct ancestor of Homo sapiens
Indicate whether the statement is true or false