The response of plants to touch is known as

A. phototropism.
B. thigmotropism.
C. gravitropism.
D. photoperiodism.


Answer: B

Biology & Microbiology

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This cellular structure lacks a membrane:  

A.  microbody B.  nucleus C.  nucleoid D.  endoplasmic reticulum E.  Golgi body

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In lactate fermentation, _____ is converted into

lactate.

a. pyruvate. b. acetaldehyde. c. ethanol. d. glucose. e. NADH.

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A prokaryotic cell has all of the following EXCEPT ____

a. a plasma membrane b. DNA c. cytoplasm d. a nucleus inside a membrane e. ribosomes

Biology & Microbiology

_______ is the main sugar transported in phloem; plant biologists think it is less vulnerable to ________ than monosaccharides.

A. Glucose; metabolic breakdown B. Sucrose; phloem loading C. Sucrose; metabolic breakdown D. Glucose; guttation

Biology & Microbiology