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Which of the following is the best example of K- strategist species? A- Fruit Flies B- Fish C- Humans D-Beetles E- Desert Annual Flowers.

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Presentation on theme: "Which of the following is the best example of K- strategist species? A- Fruit Flies B- Fish C- Humans D-Beetles E- Desert Annual Flowers."— Presentation transcript:

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2 Which of the following is the best example of K- strategist species? A- Fruit Flies B- Fish C- Humans D-Beetles E- Desert Annual Flowers

3 C-Humans

4 The role of oxygen in aerobic respiration is A- The final hydrogen acceptor in the electron transport chain B- in glycolysis C- in the Kreb Cycle D-Exactly the same as a cytochrome E- To reduce NAD to NAD+

5 A- the final hydrogen acceptor in the electron transport chain

6 Cows belong to which trophic level? A- primary consumers B- producer C- decomposer D- carnivore E- autotrophs

7 A- Primary Consumers

8 The frequency of crossing-over event occurring between any two linked genes is A-Proportional to the distance between them B- greater if the genes are sex-linked C- higher if they are dominant and lower if they are recessive D- higher if the genes are in a male E- higher if the genes are on separate

9 A- proportional to the distance between them

10 What kind of chemical bonds are found between the nitrogenous bases in a molecule of DNA? A- Covalent B- van der Waals C- ionic D- hydrogen E- disulfide

11 D- hydrogen

12 Who was the author and naturalist who developed a theory of natural selection independently of Darwin and who is often credited along with Darwin for the theory we accept today? A- Linnaeus B- Cuvier C- Lyell D- Wallace E- Lamarck

13 D- Wallace

14 Genetic Drift has the largest effect on allele frequencies when A- mating is random B- the population is small C- there is no migration, in or out D- there is no natural selection E- there is no mutation

15 B- The population is small

16 Which extraembryonic membrane in birds is analogous to the placenta in mammals? A- Chorion B- Amnion C- Eggshell D- Allantois E- Yolk Sac

17 D- Allantois

18 Polymerase chain reaction would be carried out to accomplish which one of the following? A- To prevent a virus from replicating B- To amplify a region of DNA C- to identify the location of a point mutation in a genome D- to identify a chromosome mutation E- to prepare a specimen of DNA for X-ray diffraction

19 B- to amplify a region of DNA

20 All of the following structures are adaptations specifically for life on land EXCEPT A- Xylem B- roots C- waxy cuticle D- seeds E- cell walls

21 E- Cell Walls

22 All of the following are correct about enzyme- catalyzed reactions EXCEPT A- phosphofructokinase is inhibited by ATP B- Enzymes speed up reactions by supplying necssary energy C- enzymes lower the energy of activation D- enzymes often require the presence of minerals E- all enzymes are not active at the same pH

23 B- enzyme speed up reactions by supplying necessary energy

24 Pinching back a plant, removing the new leaves at the top, results in the plant growing bushier. This happens because when the new leaves are removed, ____________ is removed as well. A- Gibberellins B- cytokinins C- auxins D- ethylene E- abscisic acid

25 C- Auxins

26 All of the following are true about cellular respiration EXCEPT A- NAD+ is reduced to NADH during both glycolysis and the Kreb Cycle B- in the absence of NAD+, glycolysis cannot occur C- ATP is produced by substrate level phosphorylation during electron transport chain D- the most important product of glycolysis is ATP E- lactic acid is converted back to pyruvic acid in the liver

27 D- the most important product of glycolysis is ATP

28 Which is correct about the person from whom this karotype was taken? A- Person has Klinefelter’s syndrome B-Person has sex-linked conditions C- Person has Down’s Syndrome D- Person has hemophilia E- The person has Turner’s syndrome

29 C- The person has Down’s syndrome

30 Oxygen is released… A- Light Dependent reaction (light reaction) B- Light independent reaction (Dark reaction) C- both light and dark reaction D- neither light or dark reaction

31 A- Light Dependent reaction (light reaction)

32 Photolysis occurs A – Light dependent reaction (light reaction) B- Light Independent reaction (dark reaction) C- Both light dependent and light independent reaction D- Neither light and light independent reaction

33 A- Light Dependent reaction (Light Reaction)

34 The population of peppered moths in England changed from white to black in less than 100 years. This is an example of A- directional selection B- genetic drift C- disruptive selection D- sexual selection E- artificial selction

35 A- Directional Selection

36 The process by which some bacteria convert nitrate to free nitrogen is called A- ammonification B- nitrogen fixation C- denitrifying D- nitrifying E- denitrogenation

37 C- Denitrifying

38 Which of the following is the dominant stage of the life cycle in moss? A- Diploid B- sporphyte C- flowering stage D- monoploid (haploid) E- none of the above is correct

39 D- Monoploid

40 In order to move from the right side of the heart to the left side of the heart, blood must pass through the A- mitral valve B- vena cava C- right atrioventricular valve D- lungs E- aorta

41 D- Lungs

42 A diploid cell has three pairs of homologous chromosomes : AaBbCcDd. How many different gametes can this cell produce? A- 4 B- 8 C- 16 D- 32 E- 64

43 C- 16 This type of problem can be solved by following this 2 raised to the power of the n umber of pair of alleles. There are four pairs of alleles, so 2 4 = 16

44 During the period when life is believed to have begun the atmosphere on primitive Earth contained abundant amounts of all the following EXCEPT A- oxygen B- hydrogen C- ammonia D- methane E- water

45 A- oxygen

46 Which of the following represents the correct sequence of events in embryonic development? A- Blastula –cleavage-morula- gastrula-neurula B- Blastula – neurula – cleavage- morula-gastrula C- Cleavage- morula-blastula-neurula-gastrula D- Cleavage- morula-blastula-gastrula-neurula E- Morula- blastula-gastrula-cleavage- neurula

47 D- A fertilized egg undergoes a series of changes in the following order cleavage (first division of the zygote), morula (solid ball), blastula (hollow ball), gastrula (formation of three germ layers ), and neurula (formation of nervous system)

48 Chemical substances released by organisms that elicit a physiological or behavioral response in other members of the same species are known as A- Auxins B- hormones C- phermones D- enzymes E- coenzyme

49 C- Pheromones

50 Hawkmoths are insects that are similar in appearance and behavior to hummingbirds. Which of the following is LEAST valid? A-These organisms are examples of convergent evolution B- These organisms were subjected to similar environmental conditions C- These organisms are genetically related to each other D- These organisms have analogous structure E- These organisms can survive in similar habitats

51 C- These organisms are genetically related to each other

52 If an invertebrate possesses malpighian tubules, a tracheal breathing system, and an open circulatory system it is most likely to be A- snail B- sponge C- butterfly D- earthworm E- flatworm

53 C- butterfly


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