A large boulder is balanced on top of a hill. You give the boulder a push, and it rolls down the hill. This is an example of converting _____ energy to _____ energy.

A) kinetic; thermal
B) potential; kinetic
C) chemical; kinetic
D) kinetic; potential


B) potential; kinetic

Biology & Microbiology

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Depending on the particular metabolism of a bacterium, electron transport can be used to energize and rotate ATP synthase

Indicate whether the statement is true or false.

Biology & Microbiology

Ovaries produce ____ to prepare the uterus prior to implantation of a fertilized egg

a. estradiol b. oxytocin c. progesterone d. prolactin e. estrogen

Biology & Microbiology

Cluster-of-differentiation antigens are found on

A) B cells, where they determine the antibody types that are made. B) B cells, where they make recognition of self antigens on macrophages possible. C) T cells, enabling them to recognize foreign antigens on macrophages. D) macrophages, enabling them to link with both B and T cells.

Biology & Microbiology

Which of the following never have cell walls?

A) algae B) animal cells C) archaea D) bacteria E) fungi

Biology & Microbiology