What is the main component of an animal cell membrane?

A. cholesterol
B. glycolipids
C. aquaporins
D. polynucleotides
E. phospholipids


Answer: E

Biology & Microbiology

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In flowering plants, companion cells are connected via plasmodesmata to ____

a. trichomes b. tracheids c. sieve tube elements d. guard cells e. vessel members

Biology & Microbiology

The veins of leaves are used for ____

a. support b. identification c. transport of water and nutrients d. detachment in the autumn e. regeneration

Biology & Microbiology

What kind of bond is formed between successive amino acids during translation?

A) ionic bond B) phosphodiester bond C) hydrogen bond D) disulfide bond E) peptide bond

Biology & Microbiology

Is the field sobriety test a presumptive or confirmatory test?

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology