Question 1

Charles Darwin observed an orchid flower with very long,thin tubes that prevent many species from feeding on flower nectar and pollinating the flower.He offered a prediction that some species of pollinator would eventually be found that can feed and pollinate through the small tube.You decide to test Charles Darwin's proposal by placing nets over some orchids that allow small pollinators to enter,but prevent the large sphinx moth from entering.You then compare the number of seeds produced by plants with and without the nets.The seed production is

Accepted Answer

A)   a theory.
B)   a dependent variable.
C)   an independent variable.
D)   a standardized variable.
E)   a hypothesis.F) C) and E)
G) B) and E)

Question 2

In an experimental procedure,the researcher measures changes,such as cell growth rates,numbers of patients with a disease,etc.in response to factors manipulated at the beginning of the experiment.This measure of change in response to the initial conditions is the

Accepted Answer

A)   Both dependent variable and standardized variable are correct.
B)   dependent variable.
C)   standardized variable.
D)   control group.
E)   independent variable.F) All of the above
G) A) and B)

Question 3

A researcher has identified a single-celled organism growing in birdbath water.Growing the organism in a laboratory,the organism is found to reproduce by simple cell division,resulting in offspring generations that are nearly identical to the original cells collected.This organism exhibits a form of

Accepted Answer

A)   sexual reproduction, mixing genetic material from the parent cells.
B)   evolution of each new generation produced.
C)   a form of reproduction occuring only in bacteria.
D)   asexual reproduction.E) All of the above
F) B) and C)

Question 4

You are feeling ill,so you visit a physician.Your wish is that the physician will quickly cure your fatigue,headache,runny nose and other ailments.Instead,the physician measures your temperature,blood pressure,pulse and orders blood tests and urine analysis to determine more about your condition.The results of all of these observations and tests will help the physician assess why your body is temporarily out of 'normal' conditions,or

Accepted Answer

A)   organism level of complexity.
B)   adaptation.
C)   natural selection.
D)   homeostasis.E) A) and D)
F) All of the above

Question 5

Evolution theory includes changes in the genetic makeup of species populations,through many generations.This can produce organisms well suited to their environments.Adaptation can be distinguished from natural selection as factors in evolution in that natural selection

Accepted Answer

A)   is the success of organisms with genetic traits to continue reproducing generations with those traits within their population.
B)   results from genetic mutations in asexual reproduction, whereas adaptation happens only in sexual reproduction.
C)   is a specific genetic trait that favors the survival of an organism until it can successfully reproduce.
D)   describes the variability of the environments and conditions in which populations live.E) C) and D)
F) B) and D)

Question 6

Decomposers are a special group of producers.

Accepted Answer

A) True 
 B)False

Exam 1: The Scientific Study of Life

In an experimental procedure,the researcher measures changes,such as cell growth rates,numbers of patients with a disease,etc.in response to factors manipulated at the beginning of the experiment.This measure of change in response to the initial conditions is the

Correct Answer
verified

Evolution theory includes changes in the genetic makeup of species populations,through many generations.This can produce organisms well suited to their environments.Adaptation can be distinguished from natural selection as factors in evolution in that natural selection

Correct Answer
verified

Correct Answer
verified

A researcher has identified a single-celled organism growing in birdbath water.Growing the organism in a laboratory,the organism is found to reproduce by simple cell division,resulting in offspring generations that are nearly identical to the original cells collected.This organism exhibits a form of

Correct Answer
verified

Correct Answer
verified

Decomposers are a special group of producers.

Correct Answer
verified

Exam 1: The Scientific Study of Life

In an experimental procedure,the researcher measures changes,such as cell growth rates,numbers of patients with a disease,etc.in response to factors manipulated at the beginning of the experiment.This measure of change in response to the initial conditions is the

Correct AnswerverifiedShow Answer

Evolution theory includes changes in the genetic makeup of species populations,through many generations.This can produce organisms well suited to their environments.Adaptation can be distinguished from natural selection as factors in evolution in that natural selection

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Decomposers are a special group of producers.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified