Homologous genes in different species are called
A. analogs.
B. paralogs.
C. orthologs.
D. dialogs.
E. monologs.
C. orthologs.
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C3 plants are more susceptible to photorespiration than either C4 or CAM plants, so why do most
plants lack the C4 pathway?
a. Rubisco is more efficient in C3 plants when compared to rubisco C4 and CAM plants. b. Photorespiration is not a serious problem for most plants. c. Most plant species do not have vacuoles in their cells to store the malate generated from CO2 taken in during the night. d. There is an energetic cost to C4 and CAM pathways that only makes them advantageous in very hot and/or arid environments. e. Switching between C3, C4, and CAM photosynthesis is very difficult for most plants.
A cyclist rides her bike up a very steep hill. Which of the following statements properly describes this activity in energetic terms?
a) Potential energy in food is converted to kinetic energy as the cyclist's muscles push her up the hill b) Kinetic energy is highest when the cyclists is at the crest of hill c) The cyclist produces the most potential energy as she cruises down the hill's steep slope d) Potential energy is greatest when the cyclist is at the top of the hill e) both a) and d)
The molecule ________ is the major energy carrier in cells
Fill in the blank(s) with correct word
What fraction of the genome contains genes that are essential for the survival of an organism, meaning that a homozygous null for them is lethal?
What will be an ideal response?