________ was the first to isolate a root nodule bacterium capable of nitrogen fixation.
Fill in the blank(s) with the appropriate word(s).
Beijerinck
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What is a single-nucleotide polymorphism?
A. any point mutation B. the presence of single nucleotides in the DNA double helix C. a site where a restriction enzyme cuts D. a site where RNA polymerase binds to DNA E. None of the above is correct.
What are the proximate causes that underlie an animal’s ability to detect and respond to stimuli?
a. only physiological mechanisms b. only genetic mechanisms c. genetic and physiological mechanisms d. genetic, cellular, physiological, and anatomical mechanisms e. genetic, physiological, and anatomical mechanisms
The net reproduction per individual per unit time (r)
is __________ per mouse per month in a population of 1,000 mice where 500 mice are born and 400 mice die monthly. a. 0.1 b. 0.2 c. 0.3 d. 0.4 e. 0.5
Select the correct sequence of structures that inulin (a filtered, non-absorbed compound) will travel through in the urinary system.
a. Renal artery, proximal tubule, distal tubule, loop of Henle, collecting duct, bladder b. Renal artery, Bowman's capsule, proximal tubule, pericapillary network, renal vein c. Renal artery, afferent arteriole, proximal tubule, loop of Henle, distal tubule, collecting duct, ureter, bladder, urethra d. Renal artery, afferent arteriole, efferent arteriole, Bowman's capsule, loop of Henle, collecting duct, ureter, bladder, urethra