Which eukaryotic kingdom includes members that are the result of endosymbioses that included an ancient aerobic bacterium and an ancient cyanobacterium?
A) Plantae
B) Fungi
C) Animalia
D) Protista
A
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If a living plant cell is placed in a beaker with a solution that has a ? value lower than the ? value of
the plant cell, the plant cell will
a. take up water until it bursts. b. lose water until its ? = ? of the solution. c. take up water until within the cell ?P = ??S. d. take up water until its ? = ?S of the solution. e. lose water until its ?S = its ?P.
Viruses are not considered to be living things, although they can evolve, and they do have genetic material. However, they
a. cannot reproduce on their own. b. cannot cause disease. c. possess a molecular structure entirely different from living cells. d. do not possess DNA. e. do not possess enzymes.
Which of the following is true about Euglena?
A. They have a pellicle. B. They lack chloroplasts. C. They belong to the same phylum as Paramecium. D. They do not have flagella. E. They have sexual reproduction.
Crosses between two dihybrid F1 pea plants, which are offspring from a parental cross AABB x aabb, result in F2 phenotypic ratios close to __________.
A) 1:2:1 B) 3:1 C) 1:1:1:1 D) 9:3:3:1