Although the expression of most genes is tightly regulated, some genes are expressed at roughly constant rates (i. e., constitutively). Which of the following genes would you predict to be constitutively expressed?
A. genes involved in the biosynthesis of tryptophan (an amino acid)
B. genes involved in the degradation of tryptophan
C. genes involved in the degradation of arabinose, a sugar
D. genes that that code for ribosomal RNAs
E. genes involved in the transport of maltose, a sugar, into the cell
Answers: 2
Biology, 22.06.2019 09:00, FireStorm4346
This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.
Answers: 1
Biology, 22.06.2019 09:30, kamjay2006
What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid
Answers: 1
Biology, 22.06.2019 11:00, taterbug3859
Every early childhood education program should develop a
Answers: 1
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