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
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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.
Ovaries produce ____ to prepare the uterus prior to implantation of a fertilized egg
a. estradiol b. oxytocin c. progesterone d. prolactin e. estrogen
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.
Which of the following never have cell walls?
A) algae B) animal cells C) archaea D) bacteria E) fungi