Q: Answer the following question given this paragraph: Tight junctions are composed of strands of transmembrane proteins embedded in the plasma membranes of two adjacent cells. The extracellular domains of these proteins directly join to one another. These joining proteins associate with peripheral membrane proteins located on the intracellular side of plasma membrane. These peripheral proteins anchor the strands to the actin component of the cytoskeleton, effectively forming a molecular complex that joins together the cytoskeletons of adjacent cells. The major types anchoring proteins of tight junctions are the claudins and the occludins. Q: What are the major types anchoring proteins? A:

OPTIONS:
- semimetals and occludins
- amino and fatty acids
- claudins and semimetals
- claudins and occludins

A: claudins and occludins

input: OPTIONS:
- electron
- photon
- neutron
- ion Now, answer this question: Answer the following question given this paragraph: Sometimes atoms lose or gain electrons. Then they become ions . Ions have a positive or negative charge. That's because they do not have the same number of electrons as protons. If atoms lose electrons, they become positive ions, or cations. If atoms gain electrons, they become negative ions, or anions. Q: When an atom gains or loses an electron it becames an? A:
A:
output: ion

Answer the following question given this paragraph: In a wheel and axle, force may be applied either to the wheel or to the axle. This force is called the input force. A wheel and axle does not change the direction of the input force. However, the force put out by the machine, called the output force, is either greater than the input force or else applied over a greater distance. Q: What is the term for the force applied to a wheel and axle? A:

OPTIONS:
- velocity force
- momentum
- output force
- input force

Answer: input force

Problem: OPTIONS:
- primates
- cephalopods
- monotremes
- marsupials
Q: Answer the following question given this paragraph: Marsupials. Marsupials include the kangaroo, koala, and opossum. Q: Kangaroos, koala and opossums are part of what group? A:
Answer: marsupials

Problem:OPTIONS:
- oxygen, nitrogen, H20
- nitrogen, argon, hydrogen
- argon, oxygen, hydrogen
- nitrogen, oxygen and argon

Answer the following question given this paragraph: Most nonmetals are poor conductors of heat. In fact, they are such poor conductors of heat that they are often used for insulation. For example, the down filling in this sleeping bag is full of air, which consists primarily of the nonmetal gases oxygen and nitrogen. These gases prevent body heat from escaping to the cold outside air. Q: What are the three most common elements in the air we breathe? A:
****
A: nitrogen, oxygen and argon

Problem:OPTIONS:
- neither
- mixed
- small
- large

Answer the following question given this paragraph: Q: Do motile cilia usually occur in small or large numbers on the cell surface? A:
****
A:
large