Which component in an operon is incorrectly matched with its function?
A. operator-if not bound to the repressor, allows RNA polymerase to bind to the DNA
B. regulator gene-binds to the repressor protein
C. structural gene-makes mRNA by transcription
D. promoter-where RNA polymerase first binds to DNA
Answer: B
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The ____ in mammals allows water to exit but does not allow ions or urea to exit
a. distal convoluted tubule b. Bowman's capsule c. descending segment of the loop of Henle d. proximal convoluted tubule e. ascending segment of the loop of Henle
Which statement is true regarding kidney stones?
a. A high carbohydrate diet decreases the risk for their formation. b. A high carbohydrate diet increases the risk for their formation. c. A high protein diet increases the risk for their formation. d. A high protein diet decreases the risk for their formation e. A low protein and low fat diet increases the risk for their formation.
An individual whose sex chromosome complement is XXY has ________ Barr body/bodies in their cells
Fill in the blank with correct word.
The spread of pathogens via contaminated water is an example of which type of transmission?
A) indirect contact B) direct contact C) vehicle D) vector