67. As a microbiologist you have been asked to investigate regulation in a new b
ID: 174115 • Letter: 6
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67. As a microbiologist you have been asked to investigate regulation in a new bacteria. Given what is known about the logical place to begin your investigation is bacteria, transcriptional B. translational C. promoter D. repressor E. operator control control, control. 68. You explain to your study group that a hypothesis is: A constant over B. a proposition that will be true and c. atheor D. an explanation that accounts for fits the facts. 69. Enzymes that cleave DNA at specific sites are called B. peptidases C. restriction endonucleases D. DNAses 70. The maintenance of a constant environment in a cell is called B, homeostasis C. gene expression D, translation 71. The distinctive feature of chloroplasts is that they contain a green pigment called: B. chlorophyll. C. hemoglobin. D. chromatin. E keratin. 72. What is the portion of the cell cycle during which the chromosomes are invisible under the light microscope because they are not yet condensed? A. Interphase B. Prophase C. Metaphase D. Anaphase E Telophase 73. What characteristic would the R groups of amino acids have if they are located within the interior of biological membranes? A. The R groups would be able to form ionic bonds. C. The R groups would be hydrophilic. B. The R groups would be polar. D. The R groups would hydrophobic. 74. In bacterial cell division, the cell divides into two nearly equal halves. This process is referred to as: A. binary fission B. mitosis C. fusion D. meiosis cytokinesis 75. Macromolecules are broken down to monomers in A. denaturation reactions. B. hydrolysis c. anabolic reactions. D. dehydration reactions. reactions.Explanation / Answer
Hypothesis is an explanation that accounts for careful observations.
Enzymes that cleave DNA at specific sites are: restriction endonucleases.
The maintenance of constant environment in a cell is homeostasis.
The green pigment in chloroplast is chlorophyll.
In bacterial cell division, the cell divide into two equal halves. The process is: binary fission.
Carbon-12, carbon-13 are the examples of isotopes.
The water molecule is polar in nature.
Macromolecules are broken down into monomers in hydrolysis reaction.
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