Which of the following is an adaptation that enables cephalopods to escape from their predators?
a. torsion
b. a hard shell
c. a modified radula
d. rapidly changing colors
e. poisonous salivary secretions
d
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While running in a garden, a girl steps on an old board and a nail goes through her shoe and skin,
causing a deep puncture wound. Which of the following non-specific defense mechanisms will aid in defense from pathogens?
a. epithelial cells with cilia b. lysozyme c. acidic skin secretions d. inflammation e. natural killer cells
Four of the five conditions listed below are caused
by recessive genes. Select the exception. a. Huntington disease b. phenylketonuria c. color blindness d. hemophilia e. albinism
Which of the following are true statements about the carbon cycle? Check all that apply.
_____ Carbon and nitrogen fixation are both facilitated by microbes. _____ Burning of gasoline is a contributor to the current imbalance in the carbon cycle. _____ Replacing rainforest with farms decreases atmospheric CO2 levels. _____ In water, inorganic carbon exists in two different forms, both of which can be used by autotrophs. _____ Carbon cycles locally.
Eukaryotic transcription factors:a
are known as CAPs. b. may be activators or repressors of transcription. c. are inducers. d. are corepressors. e. are also known as enhancers.