30. In meiosis, homologous chromosomes separate during
A. prophase II.
B. anaphase I.
C. prophase I.
D. anaphase II.
E. metaphase I.
B. anaphase I.
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Salt is often used to melt ice on roads during the winter because it lowers the freezing/melting point of water. When salt dissolves in water, individual Na+ and Cl- ions break away from the salt lattice and become surrounded by water molecules. Why would this cause ice to melt?
A. Hydrogen bonds are broken, and the salt ions interfere with interactions between H and O. As a result, it is more difficult for water molecules to bond and form ice. B. Hydrogen bonds are formed, and the salt ions bond with O. As a result, it is more difficulty for water molecules to bond and form ice. C. Hydrogen bonds are broken, and the salt ions bond with O and H respectively. As a result, it is more difficult for water molecules to bond and form ice.
_____ is a process that maintains conditions in the internal environment within ranges that cells can tolerate
Fill in the blank(s) with correct word
The anterior pituitary gland secretes ________. In men, this hormone causes the cells that will become sperm to be more sensitive to the effects of testosterone
Fill in the blank(s) with correct word
Reactants are converted to products by
A. enzymes releasing energy. B. reactants releasing energy. C. enzymes binding to reactants. D. breaking and forming bonds.