Question

1. A photoautotroph is an organism that

                              -Is a decomposer.

                              -Must obtain organic compounds for its carbon needs.

                              -Gets energy from sunlight.

                              -Gets energy by oxidizing chemical compounds.

                              -Does not need a carbon source.

2. An organism that is harmed by the presence of oxygen in the environment is a(n)

                              -Aerobe.

                              -Obligate aerobe.

                              -Facultative anaerobe.

                              -Microaerophilic.

                              -obligate anaerobe

3. Formation of peptide bonds between amino acids to build a polypeptide would be called

                              -Anabolism.

                              -Phosphorylation.

                              -Fermentation.

                              -Exergonic.

                              -Glycolysis.

4. Each of the following are denaturing agents except

                              -High temperature.

                              -Low temperature.

                              -High pH.

                              -Low pH.

                              -All of the choices are correct.

5. An organism that uses CO2 for its carbon needs would be called a(n)

                              -Heterotroph.

                              -Autotroph.

                              - Chemoheterotroph

                              -Saprobe.

                              - Halotroph

6. During replication, each parent DNA strand serves as a _____ for synthesis of new DNA strands.

                              -copy point

                              -template

                              -comparison molecule

                              -scaffold

                              -reservoir

7. In bacterial cells, when glucose is completely oxidized by all the pathways of aerobic cellular respiration, what is the maximum number of ATP generated?

                              -2 ATP

                              -3 ATP

                              -24 ATP

                              -42 ATP

                              -38 ATP

8. Replication of DNA begins at a(n) ______ rich area.

                              -Guanine-cytosine.

                              -Uracil-adenine.

                              -Adenine-thymine.

                              -Adenine-cytosine.

                              -Guanine-adenine.

9. Which of the following is not associated with a bacterial ribosome?

                              -is a 70S

                              -has a peptide (P) site

                              -has an exit site

                              -small unit provides the enzymes for making peptide bonds

                              -has an amino acid (A) site

10. Human pathogens fall into the group

                              -Psychrophiles.

                              -Thermophiles.

                              -Halophiles.

                              -Mesophiles.

                              -Acidophiles.

11. A sequence of bases on a gene that does not code for protein is called a(n)

                              -Promoter

                              -Operator

                              -Operon

                              -Exon

                              -Intron

12. A mutation that changes a normal codon to a stop codon is called a

                              -Point mutation.

                              -Silent mutation.

                              -Back mutation.

                              -Missense mutation.

                              -Nonsense mutation.

13. All of the following are true of enzymes except  

-Enzymes increase the rate of a chemical reaction.                  

-Enzymes are not part of the products of a chemical reaction.                            

-Enzymes create a chemical reaction.                         

-Enzymes are not consumed in a chemical reaction

14. A frame shift is caused by ______ mutations.

                              -Missense and insertion

                              -Missense and nonsense

                              -Nonsense and deletion

                              -Deletion and insertion

                              -Insertion and nonsense

15. What is the definition of Generation Time

16. Vitamins are important components of coenzymes

True

False

17. DNA replication proceeds in one direction around the bacterial chromosome

True

False

18. Enzymes that hydrolyze a peptide bond are called ligases.

True

False

19. Transposons can change the genome

True

False

20. Ribosomes are composed of ribosomal RNA and protein.

True

False

21. The jumping of a gene from one location to another is done by transposons.

True

False

22. Transformation is a type of horizontal gene transfer

True

False

23. Bacterial conjugation involves a donor cell with a plasmid that synthesizes a pilus.

True

False

24. Transcription occurs on a ribosome in the cytoplasm.

True

False

25. Full induction of the lactose operon requires lactose present without glucose.

True

False

26. A microorganism that does not have catalase or superoxide dismutase would find it difficult to live in an environment with _______

27. An organism that requires a small amount of oxygen but won't grow at normal atmospheric levels is a __________

28. A permanent, inheritable change in the genetic information is called a _________

29. For DNA replication, a primer of ____ is needed at the origin of nucleotide addition.

30. An organism that can exist in both oxygen and oxygen less environments is a ____________________.

31. The property of organisms to integrate catabolic and anabolic pathways to improve cell efficiency is called ______

32. If the mRNA codon for alanine is GCA, then the correct anticodon would be ___.

33. An example of inducible operon is the _____ operon.

34. Reverse transcriptase is used to make ______ from an RNA template.

35. Environmental factors that influence microbial growth are             (all that apply)    

-temperature                     

-gases                  

-pH                       

-osmotic                             

-pressure                            

-radiation                           

-hydrostatic                       

-pressure

36. The three main types of symbiosis are ____, _____, and _____.                 

-amphibolism, commensalism and parasitism.                        

-anabolism, catabolism and metabolism.                   

-mutualism, commensalism and parasitism.             

-catabolism, metabolism, and parasitism.

37. The two general categories of metabolism are ____ and ____.                    

-anabolism and catabolism.                          

-mutualism and parasitism.                          

-commensalism and parasitism                    

-anabolism and parasitism.

38. ______ refers to the process of one bacterial cell becoming two.

39. At the ____ growth phase, the population enters a period during which the rates of cell birth and cell death are more or less equal.

Answer 1