Once labor begins in childbirth, contractions increase in intensity and frequency until delivery. The increasing labor contractions of childbirth are an example of which type of regulation?
A) a bioinformatic system
B) positive feedback
C) negative feedback
D) feedback inhibition
E) enzymatic catalysis
Answer: B
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Introduction Themes in the Study of Life
- Which of the following best describes the logic of scientific inquiry?
- Which of the following is an example of qualitative data?
- Which of the following statements best distinguishes hypotheses from theories in science?
- A controlled experiment is one that
- Which of the following best demonstrates the unity among all organisms?
- Protists and bacteria are grouped into different domains because
- Systems biology is mainly an attempt to
- Which of the following is not an observation or inference on which Darwin's theory of natural selection is based?
- Which of the following is a correct sequence of levels in life's hierarchy, proceeding downward from an individual animal?
- All the organisms on your campus make up
- The students plan to gather data from the project. Which of the following would be the best way to present what they gather from experimental groups as opposed to controls?
- For their second experiment, the students want to know whether the Dinobryon have to live in colonies or can be free living. How might they proceed?
- The students decide that for one of their experiments, they want to see whether the organisms can photosynthesize. Which of the following is the best hypothesis?
- Since these organisms are protists, which of these characteristics could the students assume to be true?
- What do these two plants have in common?
- The illustration above most probably represents
- Why is a scientific topic best discussed by people of varying points of view, a variety of subdisciplines, and diverse cultures?
- Which of the following best describes a model organism?
- In a high school laboratory, which of the following constitutes an experiment?
- Which of these is an example of inductive reasoning?
- Given the cooperativity of science, which of the following is most likely to result in an investigator being intellectually looked down upon by other scientists?
- Which of the following is the best description of a control for an experiment?
- In presenting data that result from an experiment, a group of students show that most of their measurements fall on a straight diagonal line on their graph. However, two of their data points are "outliers" and fall far to one side of the expected relationship. What should they do?
- When a hypothesis cannot be written in an "If...then" format, what does this mean?
- Which of the following are qualities of any good scientific hypothesis?