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BIO 156 exam 1 questions and answers
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BIO 156 exam 1 questions and answers
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BIO 156 exam 1 questions and answersThe ability of water molecules to form hydrogen bonds with other water molecules is
critical to - Answer -all of these factors
In plants, the transport of water from roots to leaves against the force of gravity is
possible due to this property of water - Answer -cohesion
A scientist performs a controlled experiment. This means that - Answer -two
experiments are conducted, one differing from the other by only a single variable
The term biodiversity refers to - Answer -the tremendous variety of life all around us on
Earth
A(n) ___ forms when two atoms share electrons - Answer -covalent bond
Which one of the following lists contains only polysaccharides? - Answer -cellulose,
starch, and glycogen
Sucrose is formed - Answer -from two monosaccharides by dehydration synthesis
A consumer eating a producer represents - Answer -a transfer of chemical nutrients and
energy
The smallest unit of an element is - Answer -an atom
Nucleotides - Answer -all of the choices are correct
Compared to a solution of pH3, a solution of pH1 is - Answer -100 times more acidic
In conducting a proper scientific experiment, which of the following would you not do? -
Answer -change the data that you collect so that it matches how you thought the
experiment would come out
As ice melts, - Answer -hydrogen bonds are broken
The formation of systems typically results in the appearance of novel characteristics
called - Answer -emergent properties
, Which one of the following statements is not consistent with Darwin's mechanism of
natural selection? - Answer -individual organisms exhibit genetic change during their life
spans to better fit their environment
The nucleus of an atom contains - Answer -protons and neutrons
Your instructor asks you to look into your microscope to see a prokaryotic cell. You will
be looking for a cell that - Answer -has a membrane, but no nucleus
DNA differs from RNA because DNA - Answer -contains thymine in place of uracil
Life is organized in a hierarchical fashion. Which one of the following sequences
illustrates that hierarchy as it increases in complexity? - Answer -molecule --> cell -->
tissue --> organ --> organ system --> organism --> population --> community -->
ecosystem
The tree in your backyard is home to two cardinals, a colony of ants, a wasp's nest, two
squirrels, and millions of bacteria. Together, all of these organisms represent - Answer -
a community
Which of the following statements about radioactive is/are true? - Answer -the energy
emitted by radioactive isotopes can break chemical bonds and cause molecular
damage in cells
Many names for sugars end in the suffic - Answer --ose
Glucose molecules are to starch as ___ are to proteins - Answer -amino acids
The ultimate source of energy flowing into nearly all ecosystems is - Answer -sunlight
A hypothesis is - Answer -a tentative answer to some question
A scientist examining a group of cells under the microscope notices the presence of
nuclei within these cells. Chemical tests reveal that each cell is photosynthetic and is
surrounded by a wall composed of cellulose. These cells must come from an organism
that is a member of the Kingdom. - Answer -plantae
A solute is - Answer -the substance that is dissolved in solution
Genetic information is encoded in the - Answer -sequence of nucleotides in DNA
Carbon is able to form an immense diversity of organic molecules because of carbon's -
Answer -all of the choices are correct
A diet high in animal products may increase the risk for atherosclerosis. This is because
- Answer -most animal fats are saturated and some animal products contain trans fats
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