When speciation occurs, the result is a dramatic change in the new species. Ques

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When speciation occurs, the result is a dramatic change in the new species.

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Question 17 (1 point)

When two groups are reproductively isolated, it can be predicted that speciation will soon follow.

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Question 18 (1 point)

Levels of ultraviolet light influences vitamin D production is humans.

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Question 19 (1 point)

Mitochondria and chloroplasts of eukaryotic cells are very similar to prokaryotes

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Question 20 (1 point)

Organisms that live in habitats with high levels of competition are more likely to produce defensive chemicals than those that live with little competition.

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Question 21 (1 point)

The human population may continue to increase even though it surpasses carrying capacity.

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Question 22 (1 point)

Scientific studies suggest that the many organs susceptible to cancer as a result of smoking, the kidneys and bladder are exceptions, showing no differences in cancer rates as compared to non-smokers.

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Question 23 (1 point)

A woman’s ovum will complete Meiosis II only, if fertilization has occurred.

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Question 24 (1 point)

One human disease is caused by a change in the DNA from GAA to GUA. This change is an example of:

Question 24 options:

crossing over

a mutation

a meiosis error

a mitosis error

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Question 25 (1 point)

The main function of a ribosome is to ____________________.

Question 25 options:

extract energy from glucose

synthesize glucose

store food in the form of fat

synthesize proteins

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Question 26 (1 point)

The effectiveness of a medication containing growth hormone is tested on a group of young male rabbits 3 weeks of age. The best control group would be:

Question 26 options:

any group of rabbits

a group of young male rabbits 3 weeks of age, not given the medication

a group of young female rabbits 3 weeks of age, not given the medication

no control is required; just measure whether the rabbits grew

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Question 27 (1 point)

The number of _______________ in the outer shell of an atom determines the type of chemical bonds an atom can make.

Question 27 options:

electrons

protons

ions

neutrons

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Question 28 (1 point)

You find a cell of a type you have never seen before. The cell has both a nucleus and a cell wall. Therefore, you conclude, it must be a _______________ cell.

Question 28 options:

liver

animal

bacterial

plant

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Question 29 (1 point)

The gene pool of a population may change due to:

Question 29 options:

migration

genetic drift

natural selection and mutation

all of the above

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Question 30 (1 point)

Which of the following is not part of mitosis?

Question 30 options:

A.    Anaphase

B.    Metaphase

C.    Telophase

D.    S-phase

E.    Prophase

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Explanation / Answer

16. False

17. True

18.True

19.True

20. True

21. False

22. False

23. true.

24. This change is an example of a mutation.

Since a single nucleotide has undergone a change so chances say it could be due to mutation.

25. synthesize proteins.

26. The best control would be : a group of young male rabbits 3 weeks of age, not given the medication.

Since we try to keep all factors constant, be it age, gender etc., to observe a parameter in any experiment.

27. electrons

28. it must be a plant cell.

            Bacterial cell has a cell wall but no distinct nucleus. Animal cell does not have a cell wall. Hence it must be a plant cell.

29. The gene pool of a population may change due to (d) all of the above

30. S-phase is not part of mitosis. It is part of interphase.

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