A species' life history strategy refers to:
a. the traits of an individual organism over its lifetime.
b. a schedule and manner of investment in survivorship over the lifetime of an individual.
c. a schedule and manner of investment in reproduction over the lifetime of an individual.
d. A and B.
e. B and C.
E
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Who first described cells?
A. Linnaeus B. Golgi C. Darwin D. Leeuwenhoek E. Hooke
What is the distribution of phenotypes from a cross of purple tall pea plants that are heterozygous for flower color and plant height? (Purple is dominant to white; tall is dominant to dwarf.)
A. 63 purple tall; 28 purple tall; 27 white dwarf; 7 white dwarf B. 132 purple tall; 138 white dwarf C. 54 purple tall; 6 white dwarf D. 100% purple tall E. 27 purple dwarf; 28 purple tall; 31 white dwarf; 29 white tall
Proteins that are embedded within the cytoplasmic membrane and not easily extracted are called ________ proteins.
A. internal B. external C. peripheral D. integral
Countercurrent flow in the respiratory systems
of fish is a mechanism that accounts for a. oxygen uptake by blood capillaries in the gills. b. ventilation across fish gills. c. the transport of blood from the gills to the fish's heart. d. the transport of blood from the heart to the fish's main body mass. e. the flow of blood in gills as opposed to the flow of blood in the main body mass of fish.