In club fungi, each club-shaped cell initially
a. is a spore.
b. is a zygote.
c. contains a single nucleus.
d. is dikaryotic.
e. undergoes mitosis to produce spores
D
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Which statement about carbohydrates is true?
a. Carbohydrates provide structural support to organisms. b. Carbohydrates are nonpolar and insoluble in water. c. All carbohydrates are considered micromolecules. d. All carbohydrates are arranged in a linear sequence.
The receptor for mannose-6-phosphate caps the proteins destined for the primary lysosome at the:
a. Smooth endoplasmic reticulum b. Medial face of the Golgi c. Trans face of the Golgi d. Two of the above e. In the primary lysosome
In the sodium-potassium pump, sugars and amino acids, or other molecules, are brought through the membrane along with sodium ions through:
A. receptor proteins B. coupled channels C. chemiosmosis D. proton pumps
In a case of positive feedback, an increase in the stimulus causes ______ in the response and does not result in homeostasis.
A. a slight decrease B. an increase C. no change D. a large decrease