The ____ phylum has about 185 known living species of vascular, seed-bearing plants. Many of them look like palm
trees, and some produce massive strobili, with male and female strobili found on separate plants.
a. Cycadophyta
b. Anthophyta
c. Gnetophyta
d. Coniferophyta
e. Ginkgophyta
ANSWER: a
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In what general way are regulons regulated?
A) Regulons can be under both positive or negative control. B) Regulons are under negative control exclusively. C) Regulons are under positive control exclusively. D) Global regulation of regulons depends on the regulatory guidance of RNA polymerase II. E) Regulons are regulated by feedback translation loops.
A diploid organism contains _____
a. several copies of the same chromosomes b. only autosomes c. one copy of each chromosome d. chromosomes of equal size e. two of each type of chromosome
What was the dependent variable in the peacock butterfly experiments?
a. changing predators b. changing habitats c. painting the wings d. clipping the hindwings e. getting eaten
Answer the following questions true (T) or false (F)
1. Protozoa are also called prokaryotes. 2. Single-celled organisms known as diatoms have glasslike walls and are a type of algae. 3. The use of Saccharomyces as a probiotic is an example of the application of biotechnology.