Name:________________________ Test #1
Bio 092
Summer 2005
Multiple choice. Choose
the best answer for each question. (2 points each, 50 points total)
_____ 1. The smallest unit of matter is a(n):
A. Proton
B. Neutron
C. Electron
D. Atom
_____ 2. 96% of the human body is made from 4 elements. What are they?
A. nitrogen, sulfur, carbon, hydrogen
B. hydrogen, nitrogen, oxygen, carbon
C. carbon, sulfur, calcium, oxygen
D. nitrogen, phosphorus, potassium, calcium
_____ 3. The nucleus of an atom is made up of:
A. neutrons and electrons
B. neutrons only
C. neutrons and protons
D. protons and electrons
_____ 4. How many electrons can the first energy shell of an atom hold?
A. 1
B. 2
C. 4
D. 8
_____ 5. These bonds occur when electrons are shared between two elements:
A. covalent
B. ionic
C. hydrogen
D. polar
_____ 6. The properties of water are a result of these type of bonds:
A. ionic
B. covalent
C. polar
D. hydrogen
_____ 7. Polymers are created by attaching monomers through:
A. hydrolysis
B. dehydration synthesis
C. hydrogen bonds
D. hydrocarbons
_____ 8. Glycogen is a:
A. monosaccharide
B. disaccharide
C. polysaccharide
D. multisaccharide
_____ 9. The induction phase of the Atkin’s diet burns the body’s immediate energy stores, which are:
A. fat
B. starch
C. protein
D. glycogen
_____ 10. These are unhealthy products of hydrogenation:
A. super fats
B. unsaturated fats
C. trans fats
D. saturated fats
______ 11. A strand of DNA is in the shape of a(n):
A. circle
B. double helix
C. single helix
D. X
_____ 12. The start codon of a gene is always the same sequence. What is it?
A. ATG
B. GTA
C. CAT
D. GAG
_____ 13. The 3D shape of a polypeptide made by interactions of functional groups is an example of which level of protein structure?
A. primary
B. secondary
C. tertiary
D. quaternary
_____ 14. In the Atkin’s diet, ketosis is the process of breaking down:
A. glycogen
B. fat
C. carbohydrates
D. muscle mass
_____ 15. This enzyme is responsible for transcription
A. DNA polymerase
B. RNA polymerase
C. DNA depolymerase
D. RNA depolymerase
_____ 16. The complex of protein and DNA that tightly packages DNA in cells is called:
A. chromatin
B. chromatid
C. centriole
D. histone
_____ 17. DNA is wound around this protein like beads on a string to package it in the cell
A. RNA polymerase
B. Chromatin
C. Histone
D. Transcription factor
_____ 18. A codon is:
A. a sequence of 3 nucleotides that corresponds to a single amino acid
B. a sequence of three amino acids that corresponds to a single nucleotide
C. a single nucleotide that corresponds to a single amino acid
D. a single amino acid that corresponds to a single nucleotide
_____ 19. In the scientific method, a theory:
A. is the beginning idea to start an experiment
B. is the assumed answer to the hypothesis
C. is only adopted after stringent testing over time from multiple groups
D. is the tentative answer to a scientific question
_____ 20. The following are all involved in translation except:
A. ribosome
B. tRNA
C. mRNA
D. RNA polymerase
_____ 21. Ribosomes can be found:
A. in the cytoplasm
B. on the rough endoplasmic reticulum
C. on the smooth endoplasmic reticulum
D. all of the above
E. A and B
F. B and C
_____ 22. Liver cells have lots of this organelle to help detoxify your body:
A. smooth ER
B. rough ER
C. golgi apparatus
D. plasma membrane
______ 23. These proteins help fold a new polypeptide into the correct shape:
A. transcription factors
B. polymerases
C. tRNAs
D. chaperones
_____ 24. The order through which proteins move through the Golgi are:
A. Medial ŕ cis ŕ trans
B. Cis ŕ medial ŕ trans
C. Trans ŕ medial ŕ cis
D. Meidal ŕ trans ŕ cis
_____ 25. In translation, the P site of the ribosome:
A. holds the elongating polypeptide
B. reads the RNA codons
C. holds the next tRNA with amino acid ready to be added to the polypeptide
D. does nothing
True or False. (1 point each, 15
points total)
_____ 26. Elements contain two or more elements in a fixed ratio
_____ 27. The process of turning RNA into protein is called transcription
_____ 28. Carbon is the backbone for many molecules because it can make 5 bonds with
other elements
_____ 29. All isotopes are radioactive
_____ 30. An acid is something that donates H+ ions into solution
_____ 31. Isomers have the same chemical formula but are arranged differently
_____ 32. Fat stores twice as much energy as glycogen
_____ 33. Unsaturated fats are solid at room temperature because of double bonds that
allow branching of the fatty acid chains
_____ 34. Steroids have a characteristic 4 fused ring structure.
_____ 35. All proteins have quaternary structure
_____ 36. All cells have ribosomes
_____ 37. Prokaryotic cells have linear chromosomes
_____ 38. The kingdoms of Bacteria and Archaebacteria are made up of prokaryotic
cells
_____ 39. Eukaryotic cells are bigger than prokaryotic cells
_____ 40. Plant cells do not have a cytoskeleton
Continue on to the next page!!!!!
Matching. From the list below answer the following questions. Note:
some letters may be used more than once and others may not be used at all. Some
questions use more than one letter, as indicated. (Variable points, 15 points
total)
A. nucleus
B. endoplasmic reticulum
C. golgi apparatus
D. flagella
E. mitochondria
F. chloroplast
G. cell wall
H. vesicle
I. central vacuole
J. ribosome
K. lysosome
L. cytoskeleton
M. centriole
N. nucleolus
O. cytoplasm
P. cilia
Q. extracellular matrix
R. capsule
S. pili
T. nucleoid region
_____ 41. The information center of the eukaryotic cell (1 point)
_____ 42. The information center of the prokaryotic cell (1 point)
_____ 43. Found in both prokaryotic and eukaryotic cells (multiple letters, 3 points)
_____ 44. Found in plant cells but not animal cells (multiple letters, 3 points)
_____ 45. Provides protection for the prokaryotic cell against the environment and the
immune system (1 point)
_____ 46. Provides support to the cell (multiple letters, 3 points)
______ 47. Responsible for folding the newly made polypeptide in a eukaryotic cell (1
point)
_____ 48. The “distribution center” of the eukaryotic cell that modifies, packages and
ships proteins ( 1 point)
_____ 49. Contains enzymes at low pH that break down food and cellular trash (1 point)
Short answer and
fill-in-the-blank. (Variable points, 20 points total)
50. Name one example of a trace element and the disease it causes (1 point)
51. Radioactive isotopes occur when extra ___________ are present in the atom’s nucleus, causing the nucleus to be unstable and emit energy. (1 point)
52. Water is the solvent in a(n) ____________________ solution. (1 point)
53. Name one functional group of macromolecules (1 point)
54. Name one specific modification that happens in the Golgi apparatus (1 point)
55. Name two ways transcription is regulated in the cell (2 points)
56. Name three ways RNA is processed before leaving the nucleus (3 points)
57. Hydrogenation adds ______________ to ______________ fats to make them solid at room temperature (2 points)
58. The nuclear envelope has ___________ that change size to allow molecules in or out of the nucleus (1 point)
59. Fill in the complementary strand of DNA (2 points): CTGGATCAAT
60. Fill in the complementary RNA strand (2 points): GACTCAAAGTTG
61. Label the following parts of the gene (3 points):
