BS 161 exam 1 practice Questions with Complete Solutions Which of the following are common features of ALL living organisms? - Correct Answers ✅-ability to store information in DNA -presence of a plasma membrane -ability to capture energy from the environment The feature of an experiment that is changed from one treatment to the next is referred to as a(n) - Correct Answers ✅a variable In some experiments, several identical groups are set up, keeping conditions similar among them. In the _____ group, a change is deliberately introduced. In the _____ group, this change is not introduced. In this way, the researcher can determine if the change has an effect. - Correct Answers ✅test; control What is immediately produced when a cell performs translation? - Correct Answers ✅proteins Which one of the statements represents the flow of information as described by the central dogma of molecular biology? - Correct Answers ✅Information in DNA is transcribed into RNA, which carries the information to make protein. 1 / 3
BS 161 exam 1 practice Questions with Complete Solutions Which of these processes will most likely decrease the entropy inside a cell (and thus, increase the entropy of the environment outside a cell)? - Correct Answers ✅linking together amino acids to build a large protein When you eat a hamburger, some of the energy in the food is converted to ATP that your cells can use to do all kinds of work, some of the energy is stored for later use, and some of the energy is dissipated as heat. The amount of energy before and after eating the hamburger is the same. This
illustrates the: - Correct Answers ✅first law of
thermodynamics.All of the chemical reactions in a cell that are required to sustain life are referred to as - Correct Answers ✅metabolism.At some point in their life cycle, all cells have a _____, whereas not all cells have a(n) _____. - Correct Answers ✅plasma membrane; nuclear membrane Which one of the statements explains a characteristic of both all living organisms and all nonliving material? - Correct Answers ✅They both conform to the basic laws of chemistry and physics. 2 / 3
BS 161 exam 1 practice Questions with Complete Solutions
By definition, an ionic interaction occurs between: - Correct
Answers ✅a positively charged molecule and a negatively charged molecule Imagine you are looking at a bottle of salad dressing containing oil, vinegar, and water. You notice that the oil sits on "top" of the other liquids. This is due, in part, to the fact
that: - Correct Answers ✅oil is hydrophobic
A fatty acid contains primarily carbon and hydrogen atoms, and its hydrocarbon tail is very hydrophobic. What kind of interaction can occur between hydrocarbon tails of fatty acids? - Correct Answers ✅van der waals Which number represents the pH of a solution with the highest concentration of hydrogen ions (H+)? - Correct Answers ✅1.0 What differentiates isotopes of the same element? - Correct Answers ✅neutrons Imagine that you have a simplified structural diagram of an organic molecule, as shown, with no letters included. What
can you deduce? simplified structure: \/\/ - Correct Answers
✅The molecule contains only carbon and hydrogen.
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