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Exam 1: A View of Life

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Question 31

Multiple Choice

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Richard is an avid gardener who spends a lot of time caring for the plants in his garden. To minimize damage from pests from his garden, Richard uses a pesticide spray. At first the spray is very effective and kills off most of the insects that he sees on his vegetable plants. However, after a few years of using the same pesticide, he notices that some insects are surviving and continuing to eat his plants. This selection for herbicide resistance in the insects is an example of

A) natural selection.
B) mutation.
C) an adaptation.
D) homeostasis.
E) a learned response.

F) A) and C)
G) B) and E)

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Question 32

Multiple Choice

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Based on the evolutionary tree of the three domains, which of the following is true?

A) All three domains have a common ancestor.
B) Domain Bacteria and domain Eukarya are more closely related to each other than to domain Archaea.
C) The Eukarya have remained the same throughout evolutionary time.
D) All three domains are equally related to one another.
E) The Eukarya are the common ancestors to the three domains.

F) D) and E)
G) All of the above

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Question 33

Multiple Choice

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The metabolic reactions that take place in a cell obey all of the same laws and require the same conditions necessary for any chemical reaction to occur. To make these reactions possible, cells

Linda is studying the interaction between porcupines, pinion pine trees, and pine bark beetles. Over the course of her study in northern Texas, she observes the behaviors of 25 porcupines, records the location of 151 pinion pines, and traps 332 beetles. Her study encompasses ________ populations) and ________ organisms.

Which of the following statements is not true with respect to scientific theory?

Scientists were studying temperature selection amongst pregnant big brown bats. What would be the best control group for this study?

Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in its web. Later that day, a bird eats the spider. How many populations are involved in his study?

The process of ________ leads to organisms that are ________ that environment.

Populations of amphibians, including frogs and toads, have been plagued by disease and high rates of deformity. A recent study investigated whether problems among the populations have arisen due to poisons from chemicals associated with agriculture. Biologists from the University of Florida collected local adult cane toads Bufo marinus) from more than 20 different locations. Toads were collected from areas close to agriculture- both large-scale and small-scale farms as well as from suburbs. At collection sites where 50-97% of the adjacent land was farmed, males showed high levels of feminization. Feminized male toads were similar in color to females and had lower levels of testosterone and often had deformed gonads. These changes can lead to sterile males or changes in behavior that prevent mating from occurring. Based on this study, what is/ are the test groups) ?

Many insects do not see into the red color range, and as a result, many insect-pollinated flowers are colors other than red e.g., purple and yellow) . This flower coloration would be considered an)

Martin keeps a worm bin in his basement because the worms need cooler temperatures to survive. He feeds them about one pound of kitchen scraps each week. One summer the temperatures rose above the optimal temperature for the red worms ~ 85°F) and many in his colony died. However, those that survive continued to reproduce and within six months his colony was again thriving. The next summer, unusually warm temperatures again cause the basement temperatures to rise above 85°F for two days in a row. Surprisingly, Martin noticed that only a small portion of the worm colony died. What is the best explanation for this?

Which answer choice lists the steps of the scientific method in the correct order?

Kevin is studying predator-prey interactions. One day he notices a spider eating a cricket caught in its web. Later that day, a bird eats the spider. How many consumers has Kevin observed directly in this scenario?

The only single-celled organisms are prokaryotes, such as archaea and bacteria.

In science, a theory

Evolutionary processes lead to organisms that

The various species of honeycreepers have an assortment of different bills, but all honeycreeper species have a similar size and body shape. This is an example of

Richard is an avid gardener who spends a lot of time caring for the plants in his garden. To minimize damage from pests from his garden, Richard uses a pesticide spray. At first the spray is very effective and kills off most of the insects that he sees on his vegetable plants. However, after a few years of using the same pesticide, he notices that some insects are surviving and continuing to eat his plants. The ability of some of the insects to survive pesticide spraying would be considered

Which of the following examples is not correctly matched with a correct term?

A biologist is studying how pollution affects algal growth and snail populations in a portion of Lake Erie. What level of organization is she studying?