QUESTION: 589 Topic Exam C: Section 3 (science)

Graphs I-IV and Data Table I represent the motion of objects in one dimension as detected by a motion detector. Motion in the positive direction represents motion away from the motion detector and motion in the negative direction represents motion toward the motion detector.

According to Data Table I, what was the difference in velocity between minutes 3 and 4?

-0.03 m/s
-0.06 m/s
0.06 m/s
-0.07 m/s

Answer(s): B

Explanation:

-0.81 m/s and the velocity at minute 4 was -0.75 m/s. If
According to Data Table I, the velocity at minute 3 was
-0.06 m/s.
you subtract those numbers, the difference is

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QUESTION: 590 Topic Exam C: Section 3 (science)

One phenomenon studied by ecologists is the growth and regulation of populations. Population growth can be restricted when resources are limited. Competition for resources can also have an effect on population growth. Three experiments were conducted on various insects to test the validity of these statements. The table that follows is a summary of all three experiments.

Experiment 1
Two beetle species and caterpillars were studied: Six of each insect were grown in separate vials that contained adequate food supply. Beetle A and Beetle B feed on whole-wheat flour, while the caterpillars feed on fresh leaves. Twenty identical vials were set up for each insect. After ten weeks, both species of beetles grew to an average population of 500 in each vial. There was an average of 20 caterpillars in the vials that contained caterpillars.

Experiment 2
Six beetles from species A and six caterpillars were grown in the same vial containing whole-wheat flour and fresh leaves. Twenty identical vials were set up. After ten weeks, the average population of Beetle A was 500 while there was an average of 20 caterpillars in each vial.

Experiment 3
Six beetles from each beetle species were placed in the same vial containing whole-wheat flour. Twenty identical vials were set up. After ten weeks, the average population of Beetle A was three hundred while the average population of Beetle B was one hundred.

The table shows the average population of each insect that is involved in the experiments outlined.

Which of the following statements is true of Experiment 1?

Beetle A reproduces quicker than Beetle B.
Caterpillars have a greater number of offspring than beetles.
Beetle B consumed a greater amount of resources than Beetle A.
After ten weeks, there was no difference in population size between the two species of Beetle.

Answer(s): D

Explanation:

After ten weeks, the average population was the same of both species of beetle. All the other statements are not true or not supported by sufficient evidence.

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QUESTION: 591 Topic Exam C: Section 3 (science)

Experiment 1 demonstrates that insects can thrive under the given conditions.
Experiment 1 establishes that both Beetle A and Beetle B eat whole-wheat flour.
Experiment 1 establishes the non-competitive total population of each insect.
Experiment 1 demonstrates that the caterpillar has a much slower growth rate than the beetles.

Answer(s): C

Explanation:

Experiment 1 is a control experiment that establishes the population size of each insect when provided with an adequate food supply for any size population. This population size is used to compare what happens when there is less food and/or more species eating the same finite supply of food.

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QUESTION: 592 Topic Exam C: Section 3 (science)

One phenomenon studied by ecologists is the growth and regulation of populations. Population growth can be restricted when resources are limited. Competition for resources can also have an effect on population growth. Three experiments were conducted on various insects to test the validity of these statements. The table that follows is a summary of all three experiments.

Experiment 1
Two beetle species and caterpillars were studied: Six of each insect were grown in separate vials that contained adequate food supply. Beetle A and Beetle B feed on whole-wheat flour, while the caterpillars feed on fresh leaves. Twenty identical vials were set up for each insect. After ten weeks, both species of beetles grew to an average population of 500 in each vial. There was an average of 20 caterpillars in the vials that contained caterpillars.

Experiment 2
Six beetles from species A and six caterpillars were grown in the same vial containing whole-wheat flour and fresh leaves. Twenty identical vials were set up. After ten weeks, the average population of Beetle A was 500 while there was an average of 20 caterpillars in each vial.

Experiment 3
Six beetles from each beetle species were placed in the same vial containing whole-wheat flour. Twenty identical vials were set up. After ten weeks, the average population of Beetle A was three hundred while the average population of Beetle B was one hundred.

The table shows the average population of each insect that is involved in the experiments outlined.

If Beetle A in Experiment 1 was left to grow indefinitely, one would initially observe an increase, followed by a brief plateau, and then a rapid decline in the population size. What would be the most likely cause of the final decline?

other species of insects
limited supply of food
limited supply of minerals
long-term effects of confinement

Answer(s): B

Explanation:

The most likely limiting resource that is discussed and applicable to the paragraph is food supply. Over an indefinitely long period of time, the food supply would run out and population size would cease to increase. The population size would eventually start declining due to starvation.

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QUESTION: 589 Topic Exam C: Section 3 (science)

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QUESTION: 590 Topic Exam C: Section 3 (science)

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QUESTION: 591 Topic Exam C: Section 3 (science)

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QUESTION: 592 Topic Exam C: Section 3 (science)

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