Biology Final #1

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69 Questions - Developed by: Morgan - Developed on: - 18.495 taken

  • 1
    Which of the following statements about electronegativity is true?
  • 2
    What important feature(s) of non-covalent bonds makes them so important to life?
  • 3
    Assume that RNA polymerase transcribes a gene containing the section of DNA shown below. If the top strand were the template strand, the RNA corresponding to this section would be?
  • 4
    Which of the following is true of DNA?
  • 5
    The three-dimensional shape of a protein is determined by the primary, secondary, tertiary, and in many cases, the quaternary structure of the protein. The following are sentences taken from scientific articles on protein structure. For each of the statements, choose the level of protein structure that applies best.

    "Hydrogen bonds between peptide backbone components form a distinct helical structure"
  • 6
    The three-dimensional shape of a protein is determined by the primary, secondary, tertiary, and in many cases, the quaternary structure of the protein. The following are sentences taken from scientific articles on protein structure. For each of the statements, choose the level of protein structure that applies best.

    "There are extensive ionic interactions between positively charged R-groups and negatively charged R-groups on the polypeptide."
  • 7
    A particular triplet of bases in the template strand of DNA is 5'-TGA-3'. Which of the following is the anticodon component of the tRNA that binds the mRNA codon transcribed from this DNA? (note that the 3' end of each anticodon is written on the left, and the 5' on the right)
  • 8
    Which of the following molecules would be most likely to diffuse across a plasma membrane?
  • 9
    The interior region of a phospholipid bilayer can be characterized as being:
  • 10
    How do phospholipids interact with water molecules?
  • 11
    The process of facilitated diffusion requires:
  • 12
    How do membrane proteins get to the correct final destination following translation?
  • 13
    In E. coli, lactose binds with:
  • 14
    Which of the following processes produce different proteins in different cells from the same primary transcript? select all correct choices
  • 15
    Which of the following describes an event that takes place during gene regulation at the level of the chromosome in order for transcription to occur?
  • 16
    You identify a mutation affecting the lac operon and find the following:
    Proteins involved in lactose metabolism are expressed with or without lactose
    The repressor is expressed normally
    What could be wrong in this mutant?
  • 17
    Which of the following statements about forming phosphodiester binds during the process of DNA polymerization is incorrect?
  • 18
    Which of the following statements is true when comparing an uncatalyzed reaction to the same reaction with a catalyst?
  • 19
    HIV is the virus that causes AIDS. In the mid 1990's, researchers discovered an enzyme in HIV, called protease. Once the enzyme's structure was known, researchers began looking for drugs that would fit into the active site and block its function. If this strategy for stopping HIV infections was successful, it would be an example of what phenomenon?
  • 20
    Which of the following statements about electronegativity is true?
  • 21
    Suppose you discovered a new amino acid. It's R-group contains a hydroxyl (OH) group. Predict the behavior of this amino acid
  • 22
    Which of the following are covalent bonds?
  • 23
    Which of the following is a monomer of DNA?
  • 24
    Consider the structure and function of DNA. Which of the following statements is true
  • 25
    Nucleic acids have a definite polarity, or directionality. Stated another way, one end of the molecule is different from the other end. How are these ends described?
  • 26
    Assume that RNA polymerase transcribes a gene containing the section of the DNA shown below. If the bottom strand were the template strand, the RNA corresponding to this section would be?
  • 27
    Adding heat-killed virulent bacteria to a strain of live non-virulent bacteria can transform it into a virulent strain of bacteria that can kill a mouse. This transformation can be prevented by first treating the heat-killed virulent bacteria with:
  • 28
    Complete the following sentence. An intron is...
  • 29
    Secondary structure is characterized by which one of the following types of interactions?
  • 30
    Which of the following components of an amino acid differs from one amino acid to another?
  • 31
    If a tRNA is destined to deliver an arginine (Arg, R) to a ribosome for incorporation into a growing polypeptide chain, which of the following 3' to 5' sequences could be its anticodon sequence?
  • 32
    Which one of the following statements about translation in eukaryotes is incorrect?
  • 33
    Which of the following statements about both cadherins and integrins are true?
  • 34
    Which of the following cellular junctions is involved in creating a barrier between cells to prevent molecules from moving between the cells?
  • 35
    Which of the following statements describes microtubules:
  • 36
    Cytoskeletal proteins combined with motor proteins:
  • 37
    Sister chromatids of replicated chromosomes are separated during..?
  • 38
    Which of the following statements concerning cyclin-dependent kinases (CDKs) is FALSE
  • 39
    Normal genes that have important functions in cells for promoting cell division, sometimes acquire mutations that cause the products of these genes to have negative effects including the development of cancer. These normal, non-mutated, genes are called:
  • 40
    Homologous pairs of chromosomes are separated during?
  • 41
    Meiosis results in an increase in genetic diversity because:
  • 42
    A homologous chromosome pair is best described as two chromosomes that have?
  • 43
    When carbohydrates are oxidized, the C-H and C-C bonds of the carbohydrate become C-O bonds of carbon dioxide. Why is this considered carbon oxidation?
  • 44
    The regulation of phosphofructokinase by ATP is an example of:
  • 45
    Which of the following statements accurately describes steps involved in the production of ATP during oxidative phosphorylation and photophosphorylation?
  • 46
    During photosynthesis,.......is reduced to......
  • 47
    Water is..... to oxygen by...... during.......
  • 48
    How are receptors for lipid soluble and insoluble signals similar?
  • 49
    The fight or flight response can be terminated by:
  • 50
    Which of the following steps are involved in the fight or flight response?
  • 51
    Which of the following scenarios would still result in signal transduction via the phosphorylation cascade in the absence of ligand binding to its receptor kinase?
  • 52
    Insertions and deletions that occur in multiples of three nucleotides will:
  • 53
    Sequences of genomic DNA and its corresponding mature messenger RNA(mRNA) are often compared to obtain valuable information for genome annotation. Why is this comparison useful?
  • 54
    Which of the following statements contributes to the contradiction that the size of an organism's genome is not directly related to the complexity of the organism?
  • 55
    The phenotype of an individual results from an interaction between:
  • 56
    There are three alleles for the beta-globin gene. Which of the following statements best describes the effect of having the S allele, which codes for sickle-cell anemia?
  • 57
    Nondisjunction of X chromosomes may occur during meiosis 1 to form two types of eggs. If normal sperm fertilize these two types of egg, which of the following are possible genotypes of the sex chromosome for the offspring? (0 indicates absence of sex chromosome)
  • 58
    If you crossed two heterozygous yellow seed pea plants (genotypes Aa):
  • 59
    The frequency of recombination during meiosis is a function of:
  • 60
    If genetic contribution to variation (heredity) in a trait is negligible:
  • 61
    Complex traits are often called.... because they....
  • 62
    When we say that DNA replication is semiconservative, we mean that:
  • 63
    The leading strand is the daughter strand that has its... end point toward the replication fork and is therefore synthesized...
  • 64
    The technique of Sanger sequencing uses labeled dideoxynucleotides(ddNTPs) in addition to regular deoxynucleotides (dNTPs) because the ddNTPs will:
  • 65
    ....mutations affect only the individual in which they occur; .....mutations are passed from parent to offspring
  • 66
    Point mutations will have no effect on an organism and its offspring if:
  • 67
    Define Monophyletic
  • 68
    What makes up the secondary structure of a proteins
  • 69
    Genetic variation is what....

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