Rickets in children and bone softening in adults is
the result of a deficiency of what vitamin?
a. A
b. B
c. C
d. D
e. E
Answer: d
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During the process of cloning, a small circular DNA molecule that has been modified is inserted into a bacterium for replication. What is this molecule known as?
a. gene b. allele c. plasmid d. enzyme
This phylum of vascular, seed-bearing plants is limited to one living species. That species is a
deciduous tree with fan-shaped leaves. It has separate male and female plants, and the males are often planted in cities because of their resistance to pollution, insects, and disease.
a. Cycadophyta b. Anthophyta c. Gnetophyta d. Coniferophyta e. Ginkgophyta
Which of the following is an example of deductive reasoning?
A) Living objects are composed of cells. B) Atoms make up molecules, which make up cells, which make up tissues. C) If an object exhibits all the characteristics of life, it must be living. D) All objects on Earth will fall down when dropped, and none will "fall up."
Select all of the following that are types of roots. Check all that apply.
_____ Tap. _____ Fibrous. _____ Adventurous. _____ Buttress.