Spiny skinned organisms that have a water vascular system belong to the phylum:
a. Echinodermata.
b. Chordata.
c. Bryozoa.
d. Arthropoda.
e. Mollusca.
A
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Plants such as peppermint and sage contain oils. What is the function of these oils?
A. They help keep the plant from drying out. B. They help repel insects. C. They keep other plants from germinating nearby. D. They prevent fungal infection. E. They have hormone-like activity that helps wounds heal.
The Ebola virus causes ________.
A. pulmonary syndrome B. encephalitis C. lassa fever D. hemorrhagic fever
Genetic information carried by a(n) __________ directs the synthesis of a __________ chain during
translation. Fill in the blank(s) with the appropriate word(s).
Which of the following descriptions best fits the class of molecules known as nucleotides?
A) a nitrogenous base and a phosphate group B) a nitrogenous base and a sugar C) a nitrogenous base, a phosphate group, and a sugar D) a sugar and a purine or pyrimidine