Which of these is designed by researchers to test only a single prediction of a hypothesis at a time?
a. controlled experiment
b. experimental variable
c. control group
d. controlled variable
e. experimental constant
A
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For each description below, choose the type of cell division it characterizes. a. mitosis b. meiosis c. both mitosis and meiosis
______ forms genetically identical daughter cells ______ forms genetically unique daughter cells ______ forms four daughter cells ______ parent cell undergoes two rounds of cell division ______ homologous chromosomes exchange DNA prior to dividing ______ forms diploid daughter cells ______ divides after a single round of DNA replication _____ homologous chromosomes undergo synapsis ______ follows a single round of replication What will be an ideal response?
To estimate population size using the mark-release-recapture method, ____ samples must be captured
a. 1 b. 2 c. 3 d. 4 e. 5
What governs the course of the vegetative growth throughout the life of a plant?
a. Genes that govern plant development switch on in response only to changing internal environment. b. Genes that govern plant development switch on in response only to changing external environment. c. Genes that govern plant development switch on and off in response to changing external environment. d. Genes that govern plant development switch on and off in response to changing internal environment.
What is NOT a feature of a prokaryotic cell?
A) A nuclear membrane B) Ribosomes C) DNA D) A plasma membrane E) Enzymes