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Chemical and Physical Foundations of Biological Systems

An object is projected from the ground at an angle of 30o above the horizontal and returns to the ground 8 seconds later. What is the object’s maximum height?

 

40 m

 

80 m

 

160 m

 

There is not enough information to solve.

Next >

Biological and Biochemical Foundations of Living Systems

All of the following types of bonds are involved in synthesizing double-stranded DNA EXCEPT:

 

β-N-glycosidic linkages.

 

disulfide bridges.

 

phosphodiester bonds.

 

hydrogen bonds.

< Back

Next >

Psychological, Social, and Biological Foundations of Behavior

According to the elaboration likelihood model, which of the following does NOT predict whether a message will be persuasive?

 

The length of the message

 

The attractiveness of the person delivering the message

 

The truthfulness of the message

 

The trustworthiness of the person delivering the message

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Next >

Chemical and Physical Foundations of Biological Systems

Which of the following best characterizes the differences between fatty acids and phospholipids?

 

Fatty acids have two tails and form micelles; phospholipids have one tail and form membranes.

 

Fatty acids have two tails and form membranes; phospholipids have two tails and form micelles.

 

Fatty acids have one tail and form micelles; phospholipids have two tails and form membranes.

 

Fatty acids have one tail and form membranes; phospholipids have two tails and form micelles.

< Back

Next >

Psychological, Social, and Biological Foundations of Behavior

Cooley’s looking-glass self states that a person’s sense of self is the result of the perception of others. The sociological theory that best captures this idea is:

 

conflict theory.

 

labeling theory.

 

symbolic interaction theory.

 

functionalist theory.

< Back

Next >

Biological and Biochemical Foundations of Living Systems

Which of the following organisms would be forced to undergo fermentation in the presence of a toxin that blocks oxidative phosphorylation in mitochondria?

 

Escherichia coli, a facultative anaerobic bacterium

 

Saccharomyces cerevisiae, a facultative anaerobic yeast

 

Propionibacterium acnes, an obligate anaerobic bacterium

 

Mycobacterium tuberculosis, an obligate aerobic bacterium

< Back

Next >

Psychological, Social, and Biological Foundations of Behavior

Researchers want to explore the experience of subjects as they engage in the Stroop task, a task in selective attention that measures the ability to distinguish between discordant stimuli. The researchers are not merely interested in response time but want to know qualitative details about the subjects’ internal experiences. Which of the following methodologies should the researchers implement?

 

Correlational method

 

Observational method

 

Survey method

 

Phenomenological method

< Back

Next >

Chemical and Physical Foundations of Biological Systems

Compound J reacts with Compound K at 20oC to form a mixture of two products, L (20%) and M (80%). When the reaction is performed at 60oC, Compounds L and M are formed in 80% and 20% yields, respectively. When the reaction mixture obtained at 20oC is heated to 60oC and allowed to stand overnight, the composition of the mixture slowly changes to 80% L/20% M and remains invariant at longer reaction times. Which of the following statements is most consistent with the information given above?

 

An equilibrium mixture of L and M is obtained at 60oC.

 

The activation energy for formation of L is lower than that for M.

 

M is more stable than L.

 

L is formed faster than M.

< Back

Next >

Biological and Biochemical Foundations of Living Systems

Which of the following would best describe a scenario involving directional selection?

 

Turtles living on an island become physically separated into two groups when a tropical storm divides the habitat and, eventually, they are no longer able to mate.

 

Breeding creates dogs that produce little to no dander and thus are hypoallergenic for pet owners with allergies.

 

The ability to collect a wide variety of food is valued by a certain type of monkey and females who exhibit this skill are able to attract more sexual partners.

 

Field mice that are able to escape into small spaces are less likely to be consumed by predators and thus larger mice are selected against over time.

< Back

Next >

Biological and Biochemical Foundations of Living Systems

Bisphosphonates are a class of medications that function to inhibit bone resorption. They are frequently used by physicians to prevent or reduce the bone loss that occurs during osteoporosis. Which of the following is a potential mechanism of action for bisphosphonates?

 

Increase calcium absorption in the small intestine

 

Trigger apoptosis, or programmed cell death, in osteoclasts

 

Stimulate osteoblasts

 

Prevent renal losses of calcium into the urine

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