Humans incorporate nitrogen into their bodies ____
a. by nitrification
b. through ammonification
c. by assimilation and biosynthesis
d. via denitrification
e. by the process of decomposition
ANSWER: c
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Discuss the tools used to see if human behavior has a genetic component, and give two examples of either normal or abnormal behavior that appears to have a genetic component
What will be an ideal response?
Match the scientist(s) with the statement on the right.
A) was able to solubilize and create lipid bilayers B) demonstrated transmembrane proteins C) was able to solubilize and create lipid monolayers D) described the chemical nature of the cell membrane E) demonstrated that membranes were a bilayer F) proposed the "lipid protein sandwich" model of the cell membrane G) proposed the fluid mosaic model of the cell membrane H) used electron microscopy for the basis of the proposed "unit membrane" model 1) Davson and Danielli 2) Gorter and Grendel 3) J. David Robertson 4) Irving Langmuir 5) Unwin and Henderson 6) Charles Overton 7) Singer and Nicolson
During gastrulation in sea urchins, invagination produces a cavity called the ____
a. archenteron b. primary mesenchyme c. secondary mesenchyme d. blastocoel e. blastocyst
Incomplete dominance is when
A. the phenotypes of a heterozygote and a homozygous dominant are indistinguishable. B. the phenotypic expression at one locus alters the gene at a second locus. C. the phenotype of a heterozygote clearly exhibits the phenotypes of both parents (it is not an intermediate). D. an allele is dominant at some times and recessive at others. E. the phenotype of a heterozygote is not the same as either parent, but it is somewhere between the two parents.