Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 4TYK
Which of the following statements is an example of a positive feedback loop?
- a. Uterine contractions stimulate release of chemicals that stimulate more uterine contractions, leading to the birth of a baby.
- b. Although energy makes a one-way trip through an ecosystem, chemical nutrients are recycled.
- c. When cells have sufficient energy available, the pathways that break down sugars are turned off.
- d. A rise in CO2 in the atmosphere correlates with increasing global temperature.
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Humans are not autotrophic, this means we
a. cannot manufacture our own nutrients.
b. require calorie dense foods.
c. produce our own body heat.
d. produce salty body fluids.
Morbidity refers to
a. the number of cases of disease per unit of population occurring over a unit of time.
b. the first occurrence of menstruation.
c. the number of deaths attributable to a particular per unit of population over a unit of time.
d. the statistical likelihood of a person dying from a particular cause.
The human adaptive mechanism is best described as:
a.the ability of the body to help protect itself from fluctuations in energy and nutrient intake.
b. the fight or flight response.
c.the ability of the body to send cues to the brain on what nutrients and foods should be eaten.
d.the ability of the brain to simulate essential nutrient production.
FOR THE FOLLOWING STUDIES, WRITE A NULL HYPOTHESIS.-You want to test whether birth control pills increase a woman’s chances of getting breast cancer.
-You are interested in discovering if cattle grazing in grasslands alters the plant species that grow in those grasslands.
-You want to study whether tomatoes are grown organically (without chemical pesticides and fertilizers) have greater vitamin content than tomatoes grown conventionally (with chemical pesticides and fertilizers).
Chapter 1 Solutions
Study Guide for Campbell Biology
Ch. 1 - Prob. 1IQCh. 1 - Describe the pathway from DNA nucleotides to...Ch. 1 - Explain how the movement of energy in an ecosystem...Ch. 1 - What is a commonly used criterion for placing...Ch. 1 - Describe in your own words Darwins theory of...Ch. 1 - Prob. 6IQCh. 1 - a. Compare hypotheses and theories. b. Compare...Ch. 1 - a. Compare hypotheses and theories. b. Compare...Ch. 1 - The overarching theme of biology is a. scientific...Ch. 1 - Prob. 2TYK
Ch. 1 - Why can a hypothesis never be proven to be true?...Ch. 1 - Which of the following statements is an example of...Ch. 1 - The smallest unit that shows the emergent...Ch. 1 - In a pond sample, you find a unicellular organism...Ch. 1 - A biologist studying interactions among...Ch. 1 - With respect to information flow, transcription is...Ch. 1 - Prob. 9TYKCh. 1 - Which of the following themes of biology is most...Ch. 1 - Prob. 11TYKCh. 1 - Which of the following best accounts for the...
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