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Practice Exam 1 - General Biology - Spring 2011 | BIO 111, Exams of Biology

California Polytechnic State University (Cal Poly) - San Luis ObispoBiology
Prof. Grace Anne Goschke

Material Type: Exam; Professor: Goschke; Class: General Biology; Subject: Biology; University: California Polytechnic State University - San Luis Obispo; Term: Spring 2011;

Typology: Exams

2010/2011

Uploaded on 05/10/2011

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Practice Exam 1-Goschke Spring 2011
1. After the Kreb Cycle, all the carbon atoms from the original glucose are
a. Sent into the electron transport chain
b. Released into the cell membrane
c. Released as carbon dioxide
d. Sent into the phospholipid bilayer
e. Processed back into glycolysis
2. What is the smallest possible unit of life that can exist as a separate entity?
a. a cell
b. a molecule
c. an atom of an element
d. a population
e. an ecosystem
3. These are the primary cellular sites for the production of proteins
a. Golgi Bodies
b. Ribosomes
c. Mitochondria
d. Lysosomes
e. Endoplasmic Reticula
4. When light excites chlorophyll, the chlorophyll molecule
a. Changes to carotene
b. Becomes agitated and moves rapidly
c. Becomes a radioactive isotope
d. Absorbs the energy and moves an electron to a higher energy state
e. Moves into the Kreb Cycle
5. The bond in table salt (NaCl) is:
a. Polar
b. Ionic
c. Covalent
d. Double
e. Non-Polar
6. How do hydrophobic molecules react with water?
a. Attracted to
b. Absorbed by
c. Repelled by
d. Mixed with
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Practice Exam 1-Goschke Spring 2011

  1. After the Kreb Cycle, all the carbon atoms from the original glucose are a. Sent into the electron transport chain b. Released into the cell membrane c. Released as carbon dioxide d. Sent into the phospholipid bilayer e. Processed back into glycolysis
  2. What is the smallest possible unit of life that can exist as a separate entity? a. a cell b. a molecule c. an atom of an element d. a population e. an ecosystem
  3. These are the primary cellular sites for the production of proteins a. Golgi Bodies b. Ribosomes c. Mitochondria d. Lysosomes e. Endoplasmic Reticula
  4. When light excites chlorophyll, the chlorophyll molecule a. Changes to carotene b. Becomes agitated and moves rapidly c. Becomes a radioactive isotope d. Absorbs the energy and moves an electron to a higher energy state e. Moves into the Kreb Cycle
  5. The bond in table salt (NaCl) is: a. Polar b. Ionic c. Covalent d. Double e. Non-Polar
  6. How do hydrophobic molecules react with water? a. Attracted to b. Absorbed by c. Repelled by d. Mixed with

e. Polarized by

  1. Amino acids are the building blocks for a. Proteins b. Steroids c. Lipids d. Nucleic acids e. Carbohydrates
  2. What is formed when an atom loses or gains an electron? a. Mole b. Ion c. Bond d. Molecule e. Reaction
  3. Essentially, the first law of thermodynamics says that a. One form of energy cannot be converted into another b. Entropy is increasing in the universe c. Energy can be neither created nor destroyed d. Energy cannot be converted into matter or matter into energy e. All of these
  4. The oxygen released in photosynthesis comes from a. Carbon dioxide b. Glucose c. Ribulose bisphosphate d. Water e. Atmospheric oxygen
  5. Prokaryotic cells do NOT have a. Genetic Material b. Membrane bound nuclei c. Cytoplasm d. Plasma membrane e. Ribosomes
  6. Chlorophyll A reflects (does not absorb) which color of light? a. Red b. Yellow c. Orange d. Green e. Blue
  1. The byproduct of โ€œphotoโ€ reaction of photosynthesis is: a. Oxygen b. Water c. Carbon dioxide d. Glucose e. Helium
  2. Most _______ are ________ that speed up reactions a. enzymes, nucleic acids b. amino acids, proteins c. enzymes, carbohydrates d. enzymes, proteins e. nan-fats, phospholipids
  3. Which statement about membranes is false? a. They function in transport and cellular action. b. They are composed of a carbohydrate double layer. c. They are dynamic in nature. d. They contain proteins which aid in selective permeability.
  4. The three steps, in order, of the Calvin Cycle are: a. The splitting of water, the electron transport chain, the passing of electrons to NADP+. b. Fixation of CO2, sugar creation, regeneration. c. Sugar creation, regeneration, ATP production. d. ATP production, the electron transport chain, and fixation of NADPH. e. Regeneration, fixation of NADP+, sugar creation.
  5. Where does the new mass of a plant come from as it grows? a. capture of carbon dioxide b. absorbed water c. capture of oxygen gas d. chemicals in soil e. photons from sunlight
  6. Photosynthesizing plants rely on water: a. as high energy storage in its bonding. b. to replenish oxygen molecules that are lost during photosynthesis. c. to replace electrons that are excited by light energy and passed from molecule to molecule down an electron transport chain. d. to provide the protons necessary to produce chlorophyll. e. to concentrate the beams of light hitting a leaf, focusing them on the reaction center.
  1. The electron transport chain in eukaryotic mitochondria results in all of the following EXCEPT: a. The synthesis of glucose into glycogen. b. The production of ATP via ATP synthase. c. A proton concentration gradient across the inner mitochondrial membrane. d. The conversion of molecular oxygen to water. e. The conversion of NADH to NAD+ (as it gives up electrons).
  2. Given that a cell's structure reflects its function, what function would you predict for a cell with a large Golgi apparatus? a. secretion of digestive enzymes b. attachment to bone tissue c. movement d. rapid replication of genetic material and coordination of cell division e. detoxifying harmful chemicals
  3. Which of the following does NOT occur during the Calvin cycle? f. sunlight splitting water g. oxidation of NADPH h. consumption of ATP i. carbon fixation j. consumption of carbon dioxide
  4. Which of the following BEST defines diffusion? k. net movement of particles from areas of low concentration to areas of high concentration l. net movement of fluids from the environment into and out of an organism m. net movement of particles between cells n. net movement of particles in the cell from the ER to the Golgi apparatus o. net movement of particles from areas of high concentration to areas of low concentration
  5. The rough ER is the site of protein synthesis and the smooth ER is the site of lipid synthesis. What is the third compartment of the endomembrane system and what is that compartment's function? p. Ribosomes: the place of protein transcription q. Golgi apparatus: finishes the processing of the proteins and sorts them for export out of the cell r. Vesicles: packages of proteins surrounded by cell membranes that sort the proteins and lipids for packaging s. Pyroxisomes: vescicles that breakdown unwanted forms of lipids t. None of the above is correct.

b. Plant cells cannot make cellular energy at night; therefore photosynthesis actually stores ATP energy as sugar, which can be then converted back to ATP at night by cellular respiration c. Plant cells need cellular respiration to convert the sugars they absorb through their roots into ATP d. Plant cells can't produce enough sugar from photosynthesis; cellular respiration is needed to produce the remaining sugar

  1. Two drugs, called colchicine and cytochalasin, are known to disrupt the cytoskeleton within a eukaryotic cell, such as an amoeba. Which cell function would be MOST affected by addition of these drugs to an amoeba? a. the ability of the amoeba to produce proteins b. the ability of the amoeba to make new DNA c. the ability of enzymes to function inside the amoeba d. the ability of the amoeba to crawl and change shape
  2. Different steps in cellular respiration occur in different locations in the mitochondria. Which of the following does not properly match a step of respiration to its proper location? a. molecule of CO 2 released: matrix b. two carbons manipulated through Krebs cycle: matrix c. energy transferred from NADH and FADH 2 to ATP: inner mitochondrial membrane d. a gradient of hydrogen ions phosphorylates ATP: inner mitochondrial membrane e. All of the above
  3. The passive transport of water across a membrane from a solution of lower solute concentration to a solution of higher solute concentration is best described as: a. Facilitated diffusion b. Active transport c. Passive transport d. Osmosis e. Simple diffusion
  4. Which of the following sequences accurately represents the flow of electrons during photosynthesis? a. H 2 O โ†’ NADPH โ†’ Calvin cycle b. NADPH โ†’ O 2 โ†’ CO 2 c. NADPH โ†’ chlorophyll โ†’ Calvin cycle d. NADPH โ†’ electron transport chain โ†’ O 2
  5. Nuclear ______ are specialized holes in the ________- layered nuclear envelope that separates the nucleus from the ___________. a. pores; two; cytoplasm b. vesicles; three; endoplasmic reticulum c. passageways; one; cytoplasm d. pores; one; endoplasmic reticulum
  6. Which statement is true when comparing lemon juice to baking soda? a. Baking soda has less OH- than lemon juice b. Lemon juice has more H+ than baking soda c. Baking soda has more H+ than lemon juice d. Lemon juice has less H+ than baking soda
  7. MgCl separates in water into Mg 2+ and Cl-. If you were able to look at the Mg 2+ and Cl- ions, what would you see? a. Cl- ions surrounded by H2O molecules with oxygen atoms facing the Cl- ions

b. Mg 2+ ions surrounded by H2O molecules with hydrogen atoms facing the Mg 2+ ions c. Cl- ions surrounded by H2O molecules with hydrogen atoms facing the Cl- ions d. Mg 2+ ions surrounded by H2O molecules with oxygen atoms facing the Mg 2+ ions e. C and D f. All of the above

  1. The generation of ATP by the movement of protons down their concentration gradient, occurs in: a. Mitochondria b. Chloroplasts c. Endoplasmic reticula d. A and B
  2. What major advantage does the presence of organelles offer eukaryotic cells? a. They help make eukaryotic cells larger b. They help to blend together the chemicals throughout the cell c. They separate chemicals into different compartments, concentrating them for certain reactions. d. They greatly simplify eukaryotic cells, making them less complex
  3. How are phospholipid molecules that make up the surface membrane of a cell organized? a. A two-layered structure is formed, with the hydrophobic heads facing in to each other, sandwiched between and the globular proteins facing the exterior environment b. A two-layered structure is formed, with the hydrophobic tails facing in to each other, sandwiched between the hydrophilic heads that face the interior of the cell and the exterior environment c. A single layered structure is formed, with the hydrophobic tails facing in to the interior of the cell and the hydrophobic head on the outside, facing the exterior environment d. A single layered structure is formed, with the hydrophobic heads facing in to the interior of the cell and the hydrophobic tails on the outside, facing the exterior environment
  4. Which of the following cellular components contains hydrolytic enzymes associated with the digestion of macromolecules a. Lysosomes b. Smooth ER c. Vacuole d. Peroxisomes
  5. Which one of the following statements best represents the relationship between respiration and photosynthesis? a. Respiration occurs only in animals and photosynthesis occurs only in plants b. Photosynthesis reverses the biochemical pathways of respiration c. Respiration stores energy in complex organic molecules, while photosynthesis releases it d. Photosynthesis stores energy in complex organic molecules, while respiration releases it
  6. The tendency of molecules to stick together, called cohesion, is stronger in water than other liquids because: a. the polarity of water allows a hydrogen atom from one water molecule to form a hydrogen bond with the oxygen atom of another water molecule b. the polarity of water allows a hydrogen atom from one water molecule to form a hydrogen bond with the hydrogen atom of another water molecule c. the polarity of water allows a oxygen atom from one water molecule to form a hydrogen bond with the oxygen atom of another water molecule