Answer the following question given this paragraph: 38.4 Muscle Contraction and Locomotion The body contains three types of muscle tissue: skeletal muscle, cardiac muscle, and smooth muscle. Skeleton muscle tissue is composed of sarcomeres, the functional units of muscle tissue. Muscle contraction occurs when sarcomeres shorten, as thick and thin filaments slide past each other, which is called the sliding filament model of muscle contraction. ATP provides the energy for cross-bridge formation and filament sliding. Regulatory proteins, such as troponin and tropomyosin, control cross-bridge formation. Excitationcontraction coupling transduces the electrical signal of the neuron, via acetylcholine, to an electrical signal on the muscle membrane, which initiates force production. The number of muscle fibers contracting determines how much force the whole muscle produces. Q: The body contains how many types of muscle tissue? Choices: - two - seven - four - three A:
three
(Question)
Answer the following question given this paragraph: They are ectothermic , meaning their temperature depends on the temperature of their environment. Ectothermic animals are cold-blooded in that they cannot raise their body temperature on their own. This is unlike humans, whose temperature is controlled from inside the body. Q: What is the term for animals that cannot raise their body temperature on their own? Choices: - endothermic - catabolic - warm-blooded - ectothermic A:
(Answer)
ectothermic
Ques: Answer the following question given this paragraph: Extensive properties vary according to the amount of matter present. Examples of extensive properties include mass, volume, and length. Q: What are mass, volume, and length an example of? Choices: - extensive compounds - dynamic properties - fantastic properties - extensive properties A:
Ans: extensive properties
(Q).
Answer the following question given this paragraph: A base is an ionic compound that produces negative hydroxide ions when dissolved in water. Bases taste bitter and turn red litmus paper blue. Q: What is an ionic compound that produces negative hydroxide ions when dissolved in water Choices: - catalyst - acid - isomer - base A:
(A).
base
Ques:Answer the following question given this paragraph: Archaea live everywhere on Earth, including extreme environments. Q: Where do archea live? Choices: - in mammals - in the ocean - underground - everywhere A:

Ans:everywhere
Ques:Answer the following question given this paragraph: The sodium chloride dissociates into two ions, while the glucose does not dissociate. Therefore, equal concentrations of each solution will result in twice as many dissolved particles in the case of the sodium chloride. The vapor pressure of the sodium chloride solution will be lowered twice the amount as the glucose solution. Q: How many different kinds of ions are produced when sodium chloride dissociates ? Choices: - five - one - three - two A:

Ans:
two