Answer the question using the accompanying figure. Which branch is most closely related to (shares a unique
common ancestor with) the eukaryotes?
a. A
b. B
c. C
d. D
e. E
ANSWER: d
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You are given two nucleic acids; one RNA and the other DNA. What are the main features to determine which is the DNA?
_____ DNA will have thymine instead of uracil in its nitrogenous bases. _____ DNA will have a double-stranded structure. _____ DNA will have ribose as the sugar in its backbone. _____ DNA will have uracil instead of thymine in its nitrogenous bases. _____ Adenine will be present in the DNA.
Water and minerals can move from one cell to another in the intracellular pathway through the
A. Casparian strip. B. guard cells. C. companion cells. D. plasmodesmata. E. stomata.
_____ is a hyperthyroid condition.
Fill in the blank(s) with the appropriate word(s).
Which of the following results from the making of a bond?
A) Molecules are broken down. B) Atoms become more reactive. C) Atoms become more stable. D) Electrons are destroyed.