The outer part of the enzyme linked receptor has a binding site for a signaling molecule, and the part of the receptor
that extends into the cytosol has a binding site for a specific G protein.
__________________ Indicate whether the statement is true or false.
False - G protein
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Crossing over is one of the most important events in meiosis because
a. it produces new combinations of alleles on chromosomes. b. homologous chromosomes must be separated into different daughter cells. c. the number of chromosomes allotted to each daughter cell must be halved. d. homologous chromatids must be separated into different daughter cells. e. it decreases genetic diversity.
Which refers to the addition of a repeat segment of a chromosome?
A) inversion B) translocation C) deletion D) duplication E) monosomy
What part of the lymphatic system interacts with antigens and microorganisms that enter the body through mucous membranes?
a. lymph nodes b. spleen c. MALT d. thymus
Which scenario best illustrates the process of natural selection?
A. a chameleon's color changes to brown as it sits on a log. B. a bear learns to find food at a garbage dump. C. a population of mosquitoes develops resistance to a pesticide. D. a population of foxes increases as more prey becomes available. E. a plant loses its leaves in a drought.