Which component of the flowering plant is considered the female portion of the plant?
A. corolla
B. carpel
C. stamen
D. style
Answer: B
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The antibodies that activate the complement system are
a. IgA and IgD. b. IgG and IgM. c. IgG and IgD. d. IgE and IgM. e. IgA and IgE.
Some salamander species retain gills and other larval characteristics throughout adult life. This is an example of
A. phenotypic integration B. neoteny C. allometry D. heterozygosity E. canalization
All steroids have
a. the same number of double bonds. b. one or more fatty acids. c. four rings of carbon to which other atoms are attached. d. the same functional groups. e. the same number and positions of double bonds.
An ncRNA consists only of several stem loop structures. What is a likely function of this ncRNA?
A. inactivating the X chromosome in mammals by binding to DNA B. inhibiting translation by binding to an mRNA C. binding to other ncRNAs and preventing them from performing their function D. binding to components of the ribosome and facilitating its assembly E. regulating transcription by guiding histone modifying complexes to specific target genes