In what ways are hydrogen bonds and ionic bonds similar?
A) Both are based on attraction between atoms that carry differences in electrical charge.
B) Both are based on attraction between two atoms that carry negative charges.
C) Both are based on repulsion between atoms that carry differences in electrical charge.
D) Both involve an even sharing of electrons between atoms.
E) Both are based on attraction between two atoms that carry positive charges.
A
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In angiosperms, where does pollen production take place?
a. megasporangium b. antipodal cells c. microsporangium d. synergid cells
Which line, A, B, C, D, points to a cell that will participate in the secondary immune response?
1.A
2.B
3.C
4.D
In spermatogenesis, only the final cells are called ____, but they and all the stages leading up to them can be called _____.
Fill in the blank(s) with the appropriate word(s).
What is NOT a potential consequence of a copy number variation?
A) none B) loss of function at multiple loci C) phenotypic consequences leading to enhanced ability to fight infection D) higher protein levels of specific genes E) phenotypic consequences that track with the number of each gene