An important food source for baleen whales are:

a. shrimp.
b. krill.
c. lobsters.
d. crabs.
e. horseshoe crabs.


B

Biology & Microbiology

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According to the ABC model of floral development, which genes would be expressed in a showy ornamental flower with multiple sepals and petals but no stamens or carpels?

A) A genes only B) B genes only C) C genes only D) A and B genes only E) A and C genes only

Biology & Microbiology

The part of the stem axis that extends above the cotyledons in some seedlings.  

 Choose the LETTER of the best match: A. hypocotyl B. endosperm C. scutellum D. radicle E. epicotyl

Biology & Microbiology

A cycle of biological activity that repeats around every 24 hours.

A. Circadian rhythm B. Photosynthesis C. Respiration D. Glycolysis E. Photorespiration

Biology & Microbiology

Which of the following lines of evidence suggest that mitochondria evolved from the endosymbiosis of a pre-eukaryotic cell with a prokaryote

A. they conation circular molecules of DNA B. they contain 70S ribosomes C. they divide independently from the cell D. all of these suggest

Biology & Microbiology