This animal has hemolymph that empties into

an internal cavity. Which animal is it?



a. a bee
b. a clam
c. a monkey
d. an earthworm
e. more than one of these animals


E

Biology & Microbiology

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Bacteriophage have a ________ complex structure than animal viruses, because ________

A) more / bacteriophages must be coated by lipopolysaccharide to attach to bacterial cells B) less / the bacteriophage does not have to penetrate the nucleus C) more / the bacteriophage must penetrate the peptidoglycan cell wall D) less / there prokaryotic cells have a simple structure compared to eukaryotic cells

Biology & Microbiology

Why is it important for cells to be able to communicate with one another? List the main steps involved

in cell signaling. What will be an ideal response?

Biology & Microbiology

Gram-positive bacteria would stain __________ in a gram stain because of a thick layer of

__________ in their cell walls. a. green; peptidoglycan b. purple; peptidoglycan c. green; cellulose d. purple; polysaccharides e. red; polysaccharides

Biology & Microbiology

State whether the following statement is true or false; then give your reasoning: The terminating "hairpin" loop occurs in the trp operon when sufficient tryptophan is present

Indicate whether the statement is true or false

Biology & Microbiology