Which of the following organelles contains microtubules? 

A. mitochondria
B. cilia
C. cell membrane
D. ribosomes


B. cilia

Biology & Microbiology

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Antigenic variation is common in influenza B and C but is rare in influenza A.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Auxin concentration gradients

a. appear once germination begins. b. promote the transcription of an enzyme that breaks down cytokinin. c. allow formation of plant parts in expected patterns. d. help young cells elongate so that shoots and roots lengthen. e. are described by all of these EXCEPT "appear once germination begins."

Biology & Microbiology

Bone-forming cells are called _____, while cells that dissolve bone, releasing calcium and phosphorus, are _____

osteoclasts; osteoblasts osteocytes; osteoclasts osteoblasts; osteoclasts osteoclasts; osteocytes

Biology & Microbiology

List the structures associated with the upper respiratory tract and those associated with the lower respiratory tract.

What will be an ideal response?

Biology & Microbiology