answers
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The experiments of Wohler, Kolbe, Miller, and other chemists
invalidated the concept of vitalism by demonstrating that Ans✓✓✓
Organic molecules could be produced apart from living organisms using
inorganic materials
A compound contains hydroxyl groups as its predominant functional
group. Therefore this compound Ans✓✓✓ Should dissolve in water
A controlled experiment is one that Ans✓✓✓ Tests experimental and
control groups in parallel
A covalent bond is likely to be polar when Ans✓✓✓ One of the atoms
sharing electrons is more electronegative than the other atom
A covalent chemical bond is one in which Ans✓✓✓ Outer shell
electrons of two atoms are shared so as to satisfactorily fill their
respective orbitals
A friend of yours calls to say that his car would not start this morning.
He asks for your help. You say that you think the battery must be dead.
If so, then jump-starting the car from a good battery will solve the
problem. In doing so, you are Ans✓✓✓ Stating a hypothesis and using
that hypothesis to make a testable prediction
, A hydrocarbon skeleton is covalently bonded to an amino group at one
end and a carboxyl group at the other end. When placed in water this
molecule would function Ans✓✓✓ As an acid and a base
A localized group of organisms that belong to the same species is called
a ? Ans✓✓✓ Population
A slice of pizza has 500 kcal. If we could burn the pizza and use all the
heat to warm a 50-L container of cold water, what would be the
approximate increase in the temperature of the water? Ans✓✓✓ 10 deg
C
Agrobacterium infects plants and causes them to form tumors. You are
asked to determine how long a plant must be exposed to these bacteria to
become infected. Which of the following experiments will provide the
best data to address that question? Ans✓✓✓ Measure the number of
tumors formed on plants, which are exposed to Agrobacterium for
different lengths of time
Agrobacterium infects plants and causes them to form tumors. You
determine that tumor formation requires a large amount of the plant's
energy for tissue formation. How might this change the number of
offspring a plant produces, and what is the most likely explanation for
this change? Ans✓✓✓ The number of offspring should decrease,
because the plant will divert energy, from reproduction to tumor
formation