What feature enables the paramecium to move?

a. nucleus
b. cilia
c. flagella
d. pseudopodia
e. contractile vacuole


Ans: b. cilia

Biology & Microbiology

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In bilateral animals, _____ is contained within a cavity, cushions the gut during body movements, and is a means by which materials are distributed throughout the body

a. a coelom b. mesoderm c. a mantle d. a water-vascular system e. coelomic fluid

Biology & Microbiology

Which of the following is not a true statement about the scientific method?

A. It does not apply to problems encountered in everyday life. B. It is a framework to consider evidence in a repeatable way. C. It is a framework to consider ideas in a repeatable way. D. It is a general way of organizing an investigation. E. It begins with observations.

Biology & Microbiology

Whereas the zygotes of charophytes may remain within maternal tissues during their initial development, one should not expect to observe

A) any nutrients from maternal tissues being used by the zygotes. B) specialized placental transfer cells surrounding the zygotes. C) the zygotes undergoing nuclear division. D) mitochondria in the maternal tissues, or in the tissues of the zygotes. E) the zygotes digested by enzymes from maternal lysosomes.

Biology & Microbiology

Which cells typically have cell cycles lasting several months?

a) mammalian liver tissue b) cells in a cleaving frog embryo c) nerve cells d) both cells in a cleaving embryo and mammalian embryo cells e) mammalian embryo cells

Biology & Microbiology