Of the molecules found in membranes, which demonstrate dual solubility characteristics?
a. proteins, ions, and glycolipids
b. proteins, phospholipids, and glycolipids
c. proteins, sterols, and ions
d. proteins, sterols, and phospholipids
Ans: d. proteins, sterols, and phospholipids
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In the Drosophila embryo, gap genes govern the partitioning of the anterior-posterior gradient into segments
A. true B. false
Sedimentation converts ions and particles from the ____ into rocks of the ____
a. available inorganic compartment; unavailable inorganic compartment b. unavailable inorganic compartment; unavailable organic compartment c. available inorganic compartment; available organic compartment d. available inorganic compartment; unavailable organic compartment e. available organic compartment; unavailable inorganic compartment
What is the growth and reproduction of an individual called?
A) life cycle B) genotype C) phenotype D) normal distribution
Which of the following statements about the nitrogen cycle is true?
A) The nitrogen cycle requires different types of bacteria. B) Nitrogen gas is converted to nitrates in plant leaves. C) Nitrogen cannot be cycled through living organisms. D) When plants and animals die, nitrogen is removed from the nitrogen cycle