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63 Cards in this Set
- Front
- Back
what is the most likely role of a cell that contains an extensive smooth ER?
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It synthesizes large amounts of lipids
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What is the site of synthesis of proteins or export (secretion from the cell)?
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Ribosomes that attach to the Endoplasmic Reticulum
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Which of the following is not a characteristic that chloroplasts and mitochondia share?
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They are both present in al eukaryotes
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Which of the following represents a major difference between prokartotic cells and eukaryotic cells?
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Euk. cells tend to have much more extensive inner membrane systems and lager number of intracelluar organelles than do prokaryotes
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You have a distant cousin who is always tired. He is most likely to have an enzyme deficit or defect associated with what intracellular organelle?
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Mitochondria
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What is the function of the nuclear pore complex?
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a) it regulates movement of material across the nuclear envelope
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Ostyeocytes are bone cells. Collagen fibers and calcium salts are founnd in abundance between and among the osteocytes. The collagena and calcium salts are ______
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b) part of the extracellular matrix
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All of the following can be proteins found in the extracellular matrix of animal cells except______
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c) actin
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Streptococcus mutans is a common oral bacterium that forms dental plaque. What component of S. mutants is responsible for the formation of the plaque?
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c) extracellular matrix materials slime layer of the organism
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In the photosynthesis lab, blowing into the indicator dye turned the color of the blue indicator yellow because of the generation of ____
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b) acic conditions in the solution
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What electron carriers function in the Kreb Cycle
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B) both NAD+ a and FAD
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Plasmodesmata are cell-cell junctions that can be found between ______
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b) plant cells
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hormones function as _______
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c) signal molecules
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A g-protein receptor with GTP bound to it ______
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a) is in its active state
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The ATP molecule has a great deal of energy in its ______
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c) C-H bonds of the ribose sugar
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The electron transport chain is a series of redox reactions
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TRUE
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The energy of ET serves to move (transolocate) protons to the outer mitochondrial compartment. How does this help the mitochondrion to produce energy?
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b) the translocation of protons set up the electrochemical gradient that drive ATP synthesis in the mitochondria
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The chemiosmotic hypothesis is an important key to understanidng general metabolism because it explains how ATP is synthesizde by a proton motive force
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TRUE
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The right order of the physical locations for the glycolysis/fermentation/Kreb Cyle/ETC are:
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d) cyto/cyto/mito/mito
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ATP is:
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short-term, energy-storage
the cell's principle comund for energy tranasfer molecule all living cells rely on to do work d)ALL THE ABOVE |
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The anaerobic breakdown of glucose is known as:
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d) Fermentation
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The main function of cell respiration is to produce:
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c) ATP
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Which of the following is common to both fermentation and cellular respiration
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d) glycolysis
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In human cells (muscle cells) the fermentaion process produces:
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b) lactic acid
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*The proteins of the ETC active in the light-dependent reactions______
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a) are membrane proteins present in the thylakoid
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*Besides proteins, theylakoid membranes must contain a large number of _______ molecules in the reaction centers in order to harvest light
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c) pigment
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*In autumn, the leaves of deciduous treeschange colors. This is because the chlorophyll is degraded and _______
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a) The carotenoids and other pigments are still present in the leaves
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*The LDR of plants function to make organic molecules using CO2 as a carbon source. What is the eletcron source that helps reduce CO2 to sugars and other organic molecules?
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b) NADPH
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*How are the LDR and LIR of photosynthesis related?
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b) The products of LDR are used in LIR
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*Stomata, openings in the leaf are important to photosynthesis for_______
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a) Entry of CO2 that is used in the Calvin Cycle
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Which of the following statemnets concerning chloroplast is false?
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a) They are unrelated to plastids
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A parent cell divides to form two genetically identical daughter cells in the process of mitosis. For mitosis to take place ______
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b) The parent cell must replicate its entire fenome prior to mitosis
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Metaphase occurs prior to the splitting of centromeres. It is characterized by______
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a) aligning of the chromosomes on the equator
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Nerve cells lose their ability to undergo mitosis. Instead. they are permently stuck in _____
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a) G0
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What happens when MPF is introduced into immature frog oocytes that are arrested in G2?
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c) The cells enter mitosis
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If a cell has accumulated DNA damage, it is unlikely to _______
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a) Pass the G2 Checkpoint
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Which of these sequences correctly describes the cell cycle?
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d) S/G2/P/M/A/T
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Sister chromatids form in G1 of the cell cycle
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b) False
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DNA synthesis takes place in
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a) S-phase
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The longest period of a cell's life cycle is
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d) Interphase
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The function of checkpoints in the cell cycle is
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to regulate progression from one phase to another phase of the cell cycle
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The kinetochorse is a protein structure where the sister chromatids are attached to the spindle fibers
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a) true
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How does a theory differ from hypoth
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b) hypoth is specific and theory general
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*Which statemnet about sponatneous generation is false
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c) occurs everytime a new species evolves from prexisting species
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*community is defined as a group of individuals of same species living in same area at the same time (T/F)
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b) False
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*which of the following is mismatched
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c) archeabacteria and multicellular
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*how many electrons in a triple covalent bond
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c) 6
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*when are atoms most stable
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a) when are the electron orbitals in the valence shells are filled
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Difference between a polar covalent bond and an ionic bond is that electrons are shared unequally in a PC bond but completely transfered (not shared) in ionic bond (T/F)
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a) True
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*Atomic number of 110
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d) 110 protons
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*Which of the following is not true about water
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b) solid water is denser than liquid water
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* Which statement is incorrect
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b) placebo effect takes actual drug and show signs of improvement
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Urinary tract infections causes urine pH to be alkaline (T/F)
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a) True
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*Four elements that make 95%of all matter found in organisms, which of the following is not one of these?
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c) calcium
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Which is not a role that proteins play in orgnisms
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d) store genetic information
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*Which one of the following is not a component of each monomer used to make proteins
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c) a phosphorous atom
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*A peptide bond is
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c) stable planar covalent bond
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The sequence of amino acid in a protein chain whn the polymirization of a protein is complete, but the protein is still completely linear is called _____ structure?
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a) primary
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Which statement is true aout enzymes?
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d)They perform enzymatic activities- lowering activation energy
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which of the following would be an example of cofactor
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non cabon hemi group in hemoglobin molecule
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allosteric inhibition occurs when the active site of an enzyme is directly blocked by the competitive inhibitor, which leads to the inhibition of the binding of substrate to the enzyme
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FALSE
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nucleic acids are polymers made up of which of the following monomers?
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nucleotides
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what is the difference between a ribonucleotide and a deoxyribonucleotide?
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hydroxylgroup
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