As population size (N) increases, the per capita
A) birthrate and death rate increase.
B) birthrate increases and death rate decreases.
C) birthrate decreases and death rate increases.
D) birthrate and death rate decrease.
C
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In secondary active transport, the movement of materials is driven by energy though no ATP (adenosine triphosphate) is expended. What is the source of energy that is driving secondary active transport?
a. The glucose involved in transport can be utilized as an energy source to drive the pump during secondary transport. b. As a secondary energy source, the cell can use the potential energy found in proteins. c. The electrochemical gradient created during primary active transport creates potential energy that translates to kinetic energy. d. Because the membrane is a phospholipid bilayer, it has plenty of lipids on hand to use as energy to drive secondary active transport.
Cross-breeding has been used to produce featherless chickens to ____
a. make it easier to process after slaughter b. prevent a feather infecting disease c. be more resistant to high temperatures in the desert d. improve breeding efficiency e. increase their lifespan
Characteristics shared between green algae and plants include:a
stomata in the surface of leaves. b. multicellular gametangia. c. chlorophylls a and b in plastids. d. a waxy cuticle. e. stomata in the surface of stems.
The procedure used to determine whether a person has a heritable disease is known as
A) DNA sequencing. B) microarray analysis. C) genetic screening. D) northern analysis. E) xenotransplantation.