Answer the following question given this paragraph: One way to test a cause and effect hypothesis is to perform a controlled experiment. In a controlled experiment, two identical experiments are carried out side-by-side. In one of the experiments, the independent variable being tested is used, and in the other experiment, the control, the independent variable is not used. Q: What type of experiment involves two identical experiments carried out side-by-side, with and without an independent variable? Choices: - trial run - defined experiment - blind test - controlled experiment A:
controlled experiment
Answer the following question given this paragraph: Figure 15.1 Fight or Flight? Though the threats that modern humans face are not large predators, the autonomic nervous system is adapted to this type of stimulus. The modern world presents stimuli that trigger the same response. (credit: Vernon Swanepoel). Q: The fight or flight response involves what system? Choices: - functional nervous system - cellular nervous system - voluntary nervous system - autonomic nervous system A:
autonomic nervous system
Q: Answer the following question given this paragraph: Q: Archaeal cell walls contain a variety of polysaccharides and proteins but lack what? Choices: - RNA - DNA - S-layers - peptidoglycan A:
A: peptidoglycan
Question: Answer the following question given this paragraph: Electronegativity is a qualitative measure of how much an atom attracts electrons in a covalent bond. Q: Electronegativity is a qualitative measure of how much an atom attracts what in a covalent bond? Choices: - neutrons - protons - isotopes - electrons A:
Answer: electrons
*Question*
Answer the following question given this paragraph: Q: What is the term for the direct manipulation of genes for practical purposes? Choices: - manual engineering - genetic testing - genetic cloning - genetic engineering A:
**Answer**
genetic engineering
(Q).
Answer the following question given this paragraph: Scientists first make observations that raise questions. An observation is the act of noting or detecting phenomenon through the senses. For example, noting that a room is dark is an observation made through sight. Q: What is the act of noting or detecting phenomenon through the senses Choices: - sensory overload - invention - overstimulation - an observation A:
(A).
an observation