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Bio 115 Exam 1 Study Guide questions n correct answers
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Bio 115 Exam 1 Study Guide questions n correct answers
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Bio 115 Exam 1 Study Guide questions ncorrect answers
About how many molecules of ethanol would be present in 2 liters of a 0.25 mol solution? - correct
answer ✔✔3 * 10^23
The final dimensional structure of a protein can be influenced by: - correct answer ✔✔Hydrogen bonds
between r groups of polar amino acids
The primary structure of the protein
Alpha helixes and Beta pleated sheets of its secondary structure
Hydrophobic interactions between R groups of certain amino acids
ALL OF THE ABOVE ^^^^^
What is responsible for the adhesion of water molecules to other polar molecules? - correct answer
✔✔Hydrogen bonds
Formation of which bond(s) involve dehydration , release of a water molecule? - correct answer
✔✔Peptide bonds
Charles Darwin proposed that "those individuals that possess superior physical, behavioral, or other
attributes are more likely to survive than those that are not so well endowed" and thus are more likely to
pass their traits to the next generation, this is a description of what we call - correct answer ✔✔Natural
selection
In eukaryotic cells, protein synthesis always begins on? - correct answer ✔✔Free ribosomes
A hydration sphere forms around a solute molecule. The hydrogen atoms of water molecules face the
solute. The solute molecule is most likely____. - correct answer ✔✔Negatively charged
Many amphibian and mammalian enzymes carry out the same function even though they have slightly
different amino acid sequences and three dimensional structures. Many of these enzymes were thought
, to be present in the last common ancestor of amphibians and mammals. These enzymes should be
considered ______. - correct answer ✔✔Homologous
Phosphorus-32 is radioactive isotope with a half life of about two weeks. Starting with 200 g of
phosphorus-32, about how much of the isotope will remain after 4 weeks? - correct answer ✔✔50 g
How many grams of acetic acid (CH3COOH) are needed to make 5 L of 1.5 M solution? - correct answer
✔✔450 grams
Which of the following statements are true for starch and cellulose? - correct answer ✔✔Both are
polymers of glucose
The origin of life by evolution from inorganic molecules is the only theory that is considered seriously by
biologists bc? - correct answer ✔✔The suggestion permits testable hypotheses
Which Of the following is not found in prokaryotic cells? - correct answer ✔✔Golgi apparatus
Which group of lipids is most important to the function of biological membranes? - correct answer
✔✔phospholipids
DNA contains all of the following expect? - correct answer ✔✔Ribose
Compared with a pH of 6, a solution of pH 9 has____ - correct answer ✔✔1000 times the H+
concentration
Peptide bonds_____ - correct answer ✔✔Link amino acids together into protein polymers
The theory of evolution is critical to all areas of biology bc it explains ______ - correct answer ✔✔Why
distantly related organisms sometimes resemble each other
The diversity of all organisms
Why all organisms have characteristics in common
How organisms become adapted to the environment
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