A white blood cell surrounds and engulfs a worn-out red blood cell, forming a vesicle around the red blood cell. This process is called ________.
a. active transport
b. phagocytosis
c. exocytosis
d. pinocytosis
Ans: b. phagocytosis
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Picea glauca is a seed-bearing plant. What other characteristic MUST be true of this species?
A. It produces flowers. B. It produces fruits. C. The gametophyte is the dominant generation. D. It has vascular tissue. E. Double-fertilization results in the production of endosperm.
_____ are long-chain fatty acids attached to longchain
alcohols. a. Triglycerides b. Phospholipids c. Sterols d. Waxes e. Most neutral fats
Which of the following steps is not one of the phases of a fungal invasion of a plant?
A. Fungal DNA is replicated by the plant cells. B. Hyphae differentiate into specialized structures called haustoria. C. Hyphae grow through cell walls and press against the cell membrane. D. Windblown fungal spores land on plant leaves. E. A fungal spore germinates and forms an adhesion pad that allows it to stick to a plant's leaf.
Jacobs syndrome in humans, which is manifested by a higher than average stature and potential behavioral problems, is caused by which chromosomal condition?
A) triploidy B) 47, XYY C) 47, 21+ D) 47, XXY E) 45, X