Order the following regions of a gene from the most upstream region (1) to the most downstream region (5).1. -35 consensus sequence2. Pribnow box3. coding sequence4. rut site5. terminator
Fill in the blank(s) with the appropriate word(s).
3, 4, 1, 2, 5
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Which of the following statements about the proximal convoluted tubule of the mammalian kidney is false?
A. It is impermeable to water. B. It has thick walls with microvilli. C. It is the first section of the renal tubule that filtrate encounters after passing into Bowman's space. D. It reabsorbs glucose and amino acids filtered by the glomerulus. E. The epithelial cells of the proximal convoluted tubule have abundant mitochondria to supply the energy for active reabsorption of solutes.
If pollen of one species of plant lands on the stigma from another species, then ________
a. it binds but does not germinate b. a hybrid plant is produced that may or may not survive c. it germinates but the sperm will not fertilize the egg d. it does not bind because it lacks the proper recognition proteins
Why would exercise immediately help blood circulation in your legs?
A. As muscles contract, they squeeze blood through the veins and increased heart rate pushes more blood into the legs. B. Increased heart rate pushes more blood into the legs. C. As muscles contract, they squeeze blood through the veins. D. Exercise increases the amount of red blood cells. E. Exercise increases the amount of red blood cells and increased heart rate pushes more blood into the legs.
In a DNA molecule, the bases are covalently bonded to each other.
Indicate whether the statement is true or false.