In all plants, the zygote and earliest stages of the developing embryo are
A) enclosed within a seed.
B) enclosed within a pollen grain.
C) attached to and nourished by the parent plant.
D) able to disperse in a tough-walled spore.
Answer: C
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The site where the two original DNA strands separate and active replication occurs is called the
A. replisome. B. lagging strand. C. replication fork. D. sliding clamp subunit. E. primosome.
Which one of the following diseases or groups of diseases is not caused by prions?
A) certain plant diseases B) chronic wasting disease of deer and elk C) Creutzfeldt-Jacob disease of humans D) “mad cow disease”
What does it mean that cells are open systems?
a. They take out energy and matter and maintain ordered state. b. They bring in energy and matter and maintain disordered state. c. They take out energy and matter and maintain ordered state. d. They bring in energy and matter and maintain ordered state.
Consuming even a single mushroom of the genus ____ can be fatal
a. Agaricus b. Shiitake c. Portobello d. Amanita e. Oyster