Which of the following statements concerning phospholipids is FALSE?
a. They have two distinct regions, one strongly hydrophobic and the other strongly
hydrophilic.
b. They are amphipathic molecules.
c. They have cylindrical shapes that allow them to associate with water most easily as a
bilayer structure.
d. They contain a polar organic group attached to a phosphate group.
e. They contain three fatty acids chains.
E
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The single-factor crosses performed by Mendel support the observation that
A. the two alleles for a given gene are distributed randomly among an individual's gametes. B. the two alleles for a given gene are found within the same gamete. C. if the recessive alleles for two different genes are on the same chromosome, they will never be found within the same gamete. D. only the dominant alleles for a given trait are found in an organism's gametes. E. if the dominant alleles for two different genes are on different chromosomes, they will never be found within the same gamete.
Members of the ____ lineage, known as leeches, are mostly freshwater parasites, are dorsoventrally flattened, and do
not have septa.
a. Hirudinea b. Polychaeta c. Monogenoidea d. Cestoda e. Oligochaeta
Most fluid that enters the digestive system is absorbed through the ____
a. stomach b. pancreas c. small intestine d. lymph vascular system e. large intestine
Which of the following is a cell type associated with sexual reproduction in fungi?
A) sporangiospore B) dikaryon C) haustoria D) pneumocyst E) mycorrhiza