Which statement is correct about all organisms that are eukaryotes?

A) They consist of many cells.
B) They have organelles such as a nucleus.
C) They consist of cells that are surrounded by a cell wall.
D) They can be seen without a microscope.


Ans: B) They have organelles such as a nucleus.

Biology & Microbiology

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Which of the following statements best describes the gametes of most animals?

a. A sperm is large and motile; an egg is small and nonmotile. b. A sperm is small and nonmotile; an egg is large and motile. c. A sperm is large and nonmotile; an egg is small and motile. d. A sperm is small and motile; an egg is large and nonmotile. e. The sperm and egg are about the same size, but only the sperm is motile.

Biology & Microbiology

During which epoch does a major extinction event begin?

a. Eocene b. Oligocene c. Miocene d. Pleistocene e. Recent

Biology & Microbiology

True or false. All blastomeres have the same cytoplasmic components and express the same genes

Indicate whether the statement is true or false

Biology & Microbiology

Glyoxysomes play an important role in the germination of fat-storing seeds and are considered to be specialized

A) peroxisomes. B) lysosomes. C) vacuoles. D) centrioles. E) ribosomes.

Biology & Microbiology