BIO 1201 - MORONEY - EXAM 1 SAMPLE/QUIZ 1
Based on the dissociation patterns shown below, which of the following would be considered an acid? a. HF --> H+ and F- b. H20 --> H+ and OH- c. NaCl --> Na+ and Cl- d. NaF --> Na+ and F- e. KOH --> K+ and OH-
A
This organelle contains the enzymes for aerobic respiration: a. mitochondria b. lysosome c. Golgi apparatus d. all of the above e. none of the above
A
Which of the following solutions has the greatest concentration of hydrogen ions (H+)? a. gastric juice at pH 2 b. vinegar at pH 3 c. tomatoes at pH 4 d. black coffee at pH 5 e. seawater at pH 8
A
Which of the following would *NOT* normally be found in a plasma membrane? a. cellulose b. transport proteins c. phospholipids d. cholesterol e. all of the above are normally found in a p.m.
A
All cells, both prokaryotic and eukaryotic, have which of the following? a. nucleus b. plasma membrane c. mitochondria d. cell wall e. all of the above
B
Cellulose. a. carbohydrate b. protein c. nucleic acid or nucleotide d. lipid
A
Which element is likely to form polar covalent bonds in biological systems? a. sodium b. oxygen c. hydrogen d. carbon e. all of the above
B
A reaction in which ATP is cleaved allowing a second unfavorable reaction to occur is ___. a. exergonic reaction b. endergonic reaction c. a coupled reaction d. thermodynamically impossible e. a gut reaction
C
Insulin. a. carbohydrate b. protein c. nucleic acid or nucleotide d. lipid
B
Which type of linkage connects the nucleotides in RNA? a. beta-glycosidic linkages b. peptide bonds c. 3'-5' phosphodiester bonds d. disulfide bonds e. unsaturated linkages
C
Microtubules and microfilaments are components of: a. ribosome b. plasma membrane c. nucleus d. chloroplast e. cytoskeleton
E
A nucleic acid was isolated from a new plague-causing virus. Analysis if this nucleic acid indicated the following base composition: 20% Adenine, 30% Uracil, 10% guanine, and 40% cytosine. From this information which of the statements is true? a. this virus contains RNA b. this virus contains DNA c. this virus has a double stranded nucleic acid d. a and c e. b and c
A
A protein known as a phospholipase removes fatty acids from phospholipids. What cellular structure would be most affected by the enzyme? a. cell membranes b. cellulose in the cell wall c. chromosomes d. soluble cell proteins e. glucose in the cell
A
The organelle contains DNA: a. mitochondria b. lysosome c. Golgi apparatus d. all of the above e. none of the above
A
This contains the vast majority of the cell's DNA a. nucleus b. vacuole c. mitochondria d. cytoskeleton e. all of the above
A
Tubulin is major component of this organelle. a. cytoskeleton b. Golgi apparatus c. mitochondria d. chloroplast e. all of the above
A
18O and 16O are differ isotopes of oxygen. what makes them different? a. 18O has two more protons than 16O b. 18O has two more neutrons than 16O c. 18O has two more electrons than 16O d. 18O has one more proton and one more electron e. 18O has one more proton and one more neutron
B
Carbon atoms tend to form ___ bonds. a. ionic b. covalent c. hydrogen d. extracellular e. emotional
B
Compared to 40^K, the isotope 39^K has a. a different atomic number b. one less neutron c. one less proton d. one less electron e. one less proton and one less electron
B
This organelle sorts some newly made proteins to their correct location in the cell. a. cytoskeleton b. Golgi apparatus c. mitochondria d. chloroplast e. all of the above
B
Which compound below is chemically most likely to exist? a. SH b. SH2 c. SH3 d. SH4 e. SH5
B
Which is an example of a carbohydrate? a. insulin b. chitin c. mRNA d. triglyceride e. ATP
B
Which of the following elements has the same number of valence electrons as phosphorus? a. carbon b. nitrogen c. oxygen d. sodium e. sulfur
B
Corn Oil. a. carbohydrate b. protein c. nucleic acid or nucleotide d. lipid
D
Which of the following functional groups helps stabilize the tertiary structure of proteins by forming covalent cross-links within protein molecules? a. hydroxyl b. amino c. carboxyl d. sulfhydryl e. all of the above
D
This organelle is found in plant cells. a. cytoskeleton b. Golgi apparatus c. mitochondria d. chloroplast e. all of the above
E
The molecular formula of glucose is C6H1206. What would be the molecular formula of a polymer made by linking five glucose molecules together by dehydration reaction? a. C30H60O30 b. C30H58O29 c. C30H52O26 d. C30H50O25 e. C5H10O5
C
This organelle is involved in energy generation a. nucleus b. vacuole c. mitochondria d. cytoskeleton e. all of the above
C
Oxygen atoms tend to form _____. a. ionic bonds b. non polar covalent bond c. hydrogen bonds d. polar covalent bonds e. treasury bonds
D
Oxygen has a mass number of 16. Therefore, _______________. a. the # of neutrons in oxygen is 16 b. the # of protons in oxygen is 16 c. the # of electrons in oxygen is 16 d. the sum of the number of protons and neutrons in oxygen is 16 e. the sum of the number of protons and neutrons and electrons in oxygen must be 16
D
In biological molecules, phosphorus atoms normally form ___ bonds. a. 1 b. 2 c. 3 d. 4 e. 5
E
Sedoheptulose is a seven carbon sugar. What is its molecular formula? a. C6H12N6 b. C6H12O6 c. C7H12O6 d. C7H14H6 e. C7H14O7
E
This organelle contains proteins a. nucleus b. vacuole c. mitochondria d. cytoskeleton e. all of the above
E
Which organelle is active in protein synthesis? a. plasma membrane b. rough endoplasmic reticulum c. nucleus d. lysosome e. cytoskeleton
B
The H+ concentration of the vinegar in question 21 is _____ times more acidic than pure water? a. 5 b. 10 c. 50 d. 100 e. 500
D
Amino acids are acids because they possess which functional group? a. amino group b. alcohol c. carboxyl group d. phosphate group e. sulfhydryl group
C
Cl is an example of a(n) ___. a. amphipathic molecule b. cation c. anion d. zwitterion e. ionoclast
C
You are looking at a cell under the microscope. It has nucleus and a cell wall but it has no chloroplasts. What type of cell is it? a. photosynthetic bacteria b. plant cell c. fungal cell d. an animal cell e. an archaebacteria
C
A compound contains hydroxyl groups as its predominant functional group. Which of the following statements is true concerning this compound? a. it should dissolve in water b. it is probably a lipid c. it should dissolve in olive oil d. it won't form hydrogen bonds with water e. all of the above
A
Atoms that have a full outer electron shell tend to: a. be stable and nonreactive b. be unstable and very reactive c. form covalent bonds in aqueous solutions d. form ionic bonds in aqueous solutions e. be strong acids
A
Bacillus anthracis cells were treated with lysozyme which destroys the cell wall. These treated cells were then placed in pure water. What would you expect to happen to the cells? a. swell and then burst b. shrink c. well but not burst due to their cell wall d. neither swell nor shrink
A
Compared to 40^K, the isotope 42^K has a. two more neutrons b. one more neutron and one more proton c. two more protons d. two more electrons e. two more electrons and two more protons
A
O2 enters human muscle cells. No energy is needed for this process and no transport proteins are required. What membrane transport process is likely to be involved? a. simple diffusion b. facilitated diffusion c. active transport d. endocytosis e. phagocytosis
A
One of the principle functions of the cell wall is to ____. a. protect the cell from osmotic lysis b. serve as a barrier to solutes c. function in active transport d. a and b e. a, b, and c
A
____ are components of phospholipids. a. fatty acids b. citric and malice acids c. amino acids d. nucleic acids e. acid rocks
A
A mole of water weighs 18 grams while a mole of sucrose weighs 342 grams. Which statement is true? a. a mole of sucrose has more molecules than a mole of water b. a mole of sucrose has the same number of molecules as a mole of water c. a mole of sucrose has less molecules than a mole of water d. moles are known for their excellent vision
B
An atom having an atomic number of 7 and a mass of 15 would be expected to have ____ neutrons. a. 7 b. 8 c. 15 d. 22 e. 23
B
The pH of a solution is 5. What is the H+ concentration? a. 1 x 10^5 M b. 1 x 10^-5 M c. 1 x 10^8 M d. 1 x 10^-8 M e. 0.005M
B
Which of the following is an example of a hydrogen bond? a. the bond between C and H in methane (CH4) b. the bond between the H of one water molecule and the O of another water molecule c. the bond between Na and Cl in salt d. the bond between two hydrogen atoms (H2) e. the bond between S and H in a sulfhydryl
B
Which type of bond is formed by an equal sharing of electrons between atoms? a. polar covalent bond b. non polar covalent bonds c. ionic bond d. hydrogen bond e. hydrophobic interaction
B
Which type of linkage connects amino acids in protein? a. beta-glycosidic linkages b. peptide bonds c. 3'-5' phosphodiester linkages d. carbon:carbon double bonds e. James Bonds
B
A 5 carbon sugar has the following chemical formula. a. C5H5 b. C5H12)6 c. C5H10O5 d. C5H6O12 e. C5H5O5
C
A DNA strand sequence is 5' G-G-T-T-G-G-A 3'. What is the sequence of the complementary strand? a. 5' A-G-G-T-T-G-G 3' b. 5' G-G-T-T-G-G-A 3' c. 5' T-C-C-A-A-C-C 3' d. 5' C-C-A-A-C-C-T 3' e. 5' U-U-A-A-U-U-T 3'
C
A large cell has a diameter of 100 um. What is that distance in millimeters? a. 10 mm b. 1 mm c. 0.1 mm d. 0.01 mm e. 0.001 mm
C
How do water molecules interact with large molecules like a protein? a. water molecules form covalent bonds with the protein b. water molecules form ionic bonds with the protein c. water can form hydrogen bonds with the protein d. a and c e. b and c
C
In an alpha helix, a hydrogen atom participates in a covalent bond with a nitrogen atom of one amino acid and also weakly interacts with an oxygen atom. What is this second weaker interaction called? a. a secondary bond b. an ionic bond c. a hydrogen bond d. a peptide bond e. a high-yield corporate bond
C
In scientific method, what step comes immediately after you formulate your hypothesis? a. the initial observation b. formulating your conclusion c. testing the hypothesis d. arguing with others e. reviewing all of the data
C
K+ concentration is higher inside than outside a cell and is transported into the cell by the Na+K+ ATPase. K+ tansport into a cell is best described as ______. a. an example of diffusion b. an example of facilitated diffusion c. an example of active transport d. an example of endocytosis e. C and D
C
Maltose is a disaccharide consisting of two glucose sugars linked together. What is its formula? a. C6H12O6 x 2 b. C12H24O10 c. C12H22O11 d. C12H24O12 e. C11H22O12
C
Membranes prevent the movement of Na+ and charged solutes in cells because _____. a. membranes contain nucleic acids b. membranes contain proteins c. membranes contain phospholipids d. transport is passive e. all of the above
C
Phosphodiester linkages are found in: a. lipids b. proteins c. nucleic acids d. carbohydrates e. fatty acids
C
Ribosomes are found _________ where they are involved with ________. a. lysosomes, protein breakdown b. smooth ER, lipid biosynthesis c. rough ER, protein biosynthesis d. golgi apparatus, carbohydrate biosynthesis e. Golgi biosynthesis, carbohydrate breakdown
C
Sulfur atoms tend to form ___ bonds. a. ionic b. non-polar covalent c. polar covalent d. extracellular e. emotional
C
Sulfur has 6 electrons in its outer electron shell. It combines with hydrogen to form a stable (and smelly) compound. What is the structure of this compound? a. HS b. HS2 c. H2S d. H3S2 e. H4S
C
The H+ concentration in a person's stomach might be as low as 1x10^-2 M after eating a five Hongo Burrito at the Sanitary Burrito Factory. What is the pH of that person's stomach? a. 20 b. -20 c. 2 d. -2 e. 2^-10
C
Which of the following is NOT a carbohydrate function? a. carbs can be mobile energy molecules b. carbs can be energy storage molecules c. carbs can help with cell movement d. carbs can be structural molecules e. all of the above
C
Which of the following sequences below goes from largest to the smallest? a. liver cell, hemoglobin, carbon atom, cell nucleus, amino acid b. liver cell, hemoglobin, amino acid, cell nucleus, carbon atom c. liver cell, cell nucleus, hemoglobins, amino acid, carbon atoms d. liver cell, cell nucleus, amino acid, hemoglobin, carbon atom e. cell nucleus, liver cell, hemoglobin, amino acid, carbon atom
C
Which statement about *ALL* living things is true? a. all living things are capable of sight b. all living things have a nervous system of some sort c. all living things are capable of reproduction d. all of the above e. non of the above
C
While at the store you buy some carrots. The cells in those carrots are _____. a. dead b. dead but they might come back to life if you planted the carrot or left it in a cabinet for a while c. alive d. alive but metallically active e. alive but in a coma
C
Maltose is two glucose units linked together. What is its formula? a. C6H12O6 b. C12H24O12 c. C12H22O11 d. C11H22O11 e. C6H10O5
C --> take away H2O every time there is a bond
A condensation reaction ______. a. occurs by a removal of water b. involves the formation of new covalent bonds c. in involved in the synthesis of polysaccharides, proteins, and triglycerides d. a, b, and c e. none of the above
D
According to the fluid-mosaic model of cell membranes, which of the following is a true statement about membrane phospholipids? a. they frequently flip-flop from one side of the membrane to the other b. they occur in an uninterrupted bilayer, with membrane proteins restricted to the surface of the membrane c. they have hydrophilic tails in the interior of the membrane d. they can move laterally along the plane of the membrane e. all of the above
D
Acid rain sometimes has a pH of 5. What is the H+ concentration? a. 1 x 10^5 M b. 5 x 10^-1 M c. 5 x 10^-5 d. 1 x 10^-5 M e. 1 x 5^10 M
D
In biological molecules, nitrogen atoms normally form ___ bonds. a. two ionic b. three ionic c. two covalent d. three covalent e. four covalent
D
K+ is transported into cells by a protein that cleaves ATP. The concentration of K+ inside the cell is greater than the K+ outside of the cell. What type of transport is occurring? a. exocytosis b. endocytosis c. phagocytosis d. active transport e. simple diffusion
D
This organelle contains membranes: a. mitochondria b. lysosome c. Golgi apparatus d. all of the above e. none of the above
D
Two different polypeptide chains come together to form an active protein. This is an example of ___. a. primary structure b. secondary structure c. tertiary structure d. quaternary structure
D
Vinegar has a pH of about 5. What is the concentration of H+ of vinegar? a. 5 M b. 50 M c. 50 nm d. 1 x 10^-5 M e. 1 x 10^5 M
D
When a protein is made up of more than one polypeptide chain, it is said to have _______ structure. a. primary b. secondary c. tertiary d. quaternary e. quinary
D
Which gas was less abundant in Earth's early atmosphere than it is now? a. N2 b. CO2 c. H2O d. O2 e. H2
D
Which is an example of a lipid? a. insulin b. sucrose c. cellulose d. triglyceride e. ATP
D
Which of the following is TRUE of both starch and cellulose? a. they are geometric isomers of each other b. they are both used for energy storage in plants c. they can both be digested by humans d. they are both polymers of glucose e. they are both structural component of the plant cell wall
D
Which of the following is an example of a carbohydrate? a. triglyceride b. ATP c. insulin d. cellulose e. DNA
D
Which of the following is an example of secondary protein structure? a. when the subunits of hemoglobin come together to form the whole protein b. when a protein folds up to its final form c. the protein sequence is leucine - valine - glycine d. a B-sheet occurs e. all of above
D
Why is water cohesive? a. water molecules are nonpolar b. one side of the molecule is slightly positive and the other side slightly negative c. water molecules participate in hydrogen bonds d. b and c e. all of the above
D
You are trying to identify an organism by looking at a group of cells under the microscope. It is is multicellular and the cells Cleary have a cell wall. The cells have many internal organelles but no chloroplasts. To which kingdom does this organism belong? a. Monera b. animal c. calamari d. fungi e. plant
D
After a "flesh wound" some of the skin fibroblast cells begin to move into the wound area. Which sub cellular structure listed below is directly involved in this process of cell movement? a. mitochondria b. endoplasmic reticulum c. Golgi apparatus d. lysosomes e. cytoskeleton
E
Cellulose is: a. a storage polysaccharide found in plants b. a storage polysaccharide found in animals c. a monosaccharide used for energy in all cells d. a 5-carbon sugar which is a component of RNA e. a structural polysaccharide found in the cell wall of plants
E
Integral membrane proteins would be expected to: a. lack tertiary structure b. be loosely bound to the bilayer c. have no known functions in membranes d. are only found in membranes e. have hydrophobic regions
E
It is presently thought that chlorophyll is essential for photosynthesis. Which of the following observations would disprove this hypothesis? e. all of the above
E
Sulfer and nitrogen atoms ____. a. have different number of protons b. have different number of valence electrons c. form different number of chemical bonds d. a and b e. a, b, and c
E
This organelle contains proteins. a. cytoskeleton b. Golgi apparatus c. mitochondria d. chloroplast e. all of the above
E
This organelle is found in plant cells a. nucleus b. vacuole c. mitochondria d. cytoskeleton e. all of the above
E
Which component is present in prokaryotic cells? a. mitochondria b. cytoskeleton c. Golgi apparatus d. endoplasmic reticulum e. ribosomes
E
Which of the following carbon isotopes 12C, 13C, and 14C is/are found in nature or naturally occurring? a. 12C b. 13C c. 14C d. 12C and 13C e. all of these are found in nature
E
Which of the following is *NOT* associated with protein function? a. transport of molecules across membranes b. movement of an organism c. communication between cells (hormones) d. catalysis of chemical reactions e. all of these are associated with proteins
E
Why does your instructor argue that a carrot in the market is still alive? a. it is capable of growth b. it is still metabolically active c. it is still capable of reproduction d. it can still acquire nutrients from the environment e. all of the above
E