BACE Practice Test 2: Questions And Answers
Complimentary base pairing between two DNA strands is due to the formation of Correct Ans - hydrogen bonds Cellulose is an important raw material for textiles and a variety of other industries. Which of the following is a function of polysaccharides in the cell?Correct Ans - Providing structure and energy storage within cells Lipids are composed mainly of which of the following atoms? Correct Ans
- carbon and hydrogen
- Concentration, Heat, Presence of a Catalyst
T/F: A solute is the dissolved matter in a solution. Correct Ans - true Process which uses oxygen as a raw material Correct Ans - aerobic respiration Process which releases carbon dioxide and ethyl alcohol Correct Ans - anaerobic respiration Process by which glucose is utilized by a cell Correct Ans - Both Aerobic and Anaerobic Respiration Process which uses carbon dioxide as a raw material Correct Ans - Neither Aerobic or Anaerobic Respiration Why are enzymes necessary in living organisms? Correct Ans - Enzymes increase the rate of chemical reactions which would otherwise occur too slowly to sustain life.Which of the following affects the rate of a chemical reaction? Correct Ans
Made of four nitrogenous bases Correct Ans - all DNA Contained in a nucleus Correct Ans - Eukaryotic DNA 1 / 2
Long, circular DNA with several thousand genes Correct Ans - Prokaryotic DNA Small, circular DNA floating in the cytoplasm Correct Ans - Plasmid Double helix structure of repeating nucleotides Correct Ans - All DNA Linear, very long pieces of DNA with many thousands of genes Correct Ans - Eukaryotic DNA When DNA replicates, each original strand of DNA serves as a template for a new strand. What type of replication is this? Correct Ans - Semi- conservative replication Transcription begins when RNA polymerase binds to which area on the DNA strand? Correct Ans - Promoter Many enzymes used in biotechnology applications occur naturally within the cell. Which enzyme is involved in DNA replication? Correct Ans - DNA Polymerase Where does translation take place in prokaryotes? Correct Ans - ribosomes If a bacterial cell did not contain restriction enzymes, which of the following would be likely to occur? Correct Ans - The cell would be easily infected and lysed by bacteriophages.Cell theory states: Correct Ans - All life forms are made from one or more cells.Cells only arise from pre-existing cells.The cell is the smallest form of life.What happens at the ribosome? Correct Ans - protein synthesis Which type of cell could use sugar to produce energy in an oxygen-deprived environment? Correct Ans - bacterial, animal (muscle), yeast
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