For most multicellular eukaryotes, including humans, mitochondria are inherited
a. only from the father.
b. from both the father and the mother.
c. from the mother for females and from the father for males.
d. randomly from either the father or the mother.
e. only from the mother.
E
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The site on an enzyme that will bind the substrate is called the
A) prosthetic group. B) catalyst. C) active site. D) metastable site. E) activation site.
The polyp form of a cnidarian has its tentacles pointed downward
____________________ Indicate whether the statement is true or false.
Without the protein myosin, what structures would also be missing in a muscle?
A) ribosomes B) mitochondria C) thin filaments D) thick filaments
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 formed, and the salt ions bond with O. As a result, it is more difficult for water molecules to bond and form ice. B. 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. 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.