An atom X contains 14 protons, 13 electrons, and 12 neutrons, and atom Y contains 14 protons, 14 electrons, and 12
neutrons. What can you conclude?
a. Y is an ion but X is not.
b. X and Y are both ions.
c. X and Y both have filled valence shells.
d. X and Y are isotopes of the same element.
e. X and Y are atoms of the same element.
e
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At the endodermis is a thin band of hydrophobic material that prevents water passage between cells called the:
A. Casparian strip. B. cortex. C. medulla. D. plasmodesmata. E. parenchyma.
If one plant has a very small tubular type of flower and cannot be pollinated by a large honeybee, it
may develop which type of prezygotic isolation?
a. behavioral isolation b. ecological isolation c. gametic isolation d. mechanical isolation e. temporal isolation
When scientists transferred the gene for the AVP receptor from male voles into male mice, the male mice
a. began to eat roots, a preferred food of voles b. attempted to locate and mate with female voles c. preferred female mice they had already mated with to new females d. ceased normal social behaviors such as grooming and co-sleeping e. became aggressive and territorial
Which term identifies or describes these genotypes? RR / PP
What will be an ideal response?