Answer the following question given this paragraph: The organs of the GI tract are lined with mucous membranes that secrete digestive enzymes and absorb nutrients. The organs are also covered by layers of muscle that enable peristalsis. Peristalsis is an involuntary muscle contraction that moves rapidly along an organ like a wave (see Figure below ). You can watch an animation of peristalsis at this link: http://en. wikipedia. org/wiki/File:Peristalsis. gif . Q: What is an involuntary muscle contraction that moves rapidly along an organ like a wave called? Choices: - ruptured nerve - apoptosis - esophagus - peristalsis A:
peristalsis
(Question)
Answer the following question given this paragraph: Many samples have a lot of variation in measurements. Variation can be described with a statistic called the range. The range is the total spread of values in a sample. It is calculated by subtracting the smallest value from the largest value. Q: What term is used to describe the total spread of values in a sample? Choices: - variety - axis - scale - range A:
(Answer)
range
Ques: Answer the following question given this paragraph: Plants are complex organisms with tissues organized into organs. Q: Plants are complex organisms with tissues organized into what? Choices: - carbons - systems - families - organs A:
Ans: organs
(Q).
Answer the following question given this paragraph: The dual character is critical for the formation of the lipid bilayer. The hydrophilic portions of the molecule are in contact with the aqueous environment of the cell, while the hydrophobic portion of the lipids is in the interior of the bilayer and provides a barrier to the passive diffusion of most molecules. Q: The dual character is critical for the formation of the what? Choices: - muscle bilayer - carbon bilayer - tissues bilayer - lipid bilayer A:
(A).
lipid bilayer
Ques:Answer the following question given this paragraph: They have lots of mitochondria. Mitochondria are called the power plants of the cell, as these organelles are where most of the cell's energy is produced. Cells that need lots of energy have lots of mitochondria. Q: What organelles are known as the "power plants" of the cell? Choices: - plastid - flagella - golgi body - mitochondria A:

Ans:mitochondria
Answer the following question given this paragraph: Sexual reproduction involves haploid gametes and produces a diploid zygote through fertilization. Q: Sexual reproduction involves haploid gametes and produces a diploid zygote through what process? Choices: - infection - vivisection - sedimentation - fertilization A:
fertilization