In a lipid bilayer, __________ fatty acid tails face each other within the bilayer and form a region that excludes water
a. hypertonic
b. hyperosmotic
c. hypotonic
d. hydrophilic
e. hydrophobic
e
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__________, the first vertebrates able to complete their life cycle on dry land, have water conserving
skin and kidneys, and amniote eggs. Fill in the blank(s) with the appropriate word(s).
The Chi-square test involves a statistical comparison between measured (observed) and predicted (expected) values. One generally determines degrees of freedom as ________
A) the number of categories being compared B) the sum of the two categories C) one less than the number of classes being compared D) one more than the number of classes being compared E) ten minus the sum of the two categories
Studies assessing the amounts of different carbon isotopes (12C, 13C, and 14C) in the atmosphere were important because they provided evidence that human activities were in fact adding CO2 to the atmosphere. This is an example of what type of relationship
A. correlation B. symbioses C. causation D. conduction E. antagonism
Pea shape is controlled by a gene that specifies an enzyme known as Sbe1 (for Starch-branching enzyme 1). A recessive allele of Sbe1 likely encodes
A) an Sbe1 enzyme with reduced function. B) an Sbe1 enzyme with a new function. C) a different type of enzyme. D) an Sbe1 enzyme with enhanced catalytic activity.