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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology