Download TOSSUP 1) BIOLOGY Multiple Choice If all alleles for genetic

TOSSUP
1) BIOLOGY Multiple Choice If all alleles for genetic disorders are equally
prevalent in the population, which of the following diseases is Adi most
likely to have, assuming Adi is not female?
W) hemophilia
X) cri du chat
Y) sickle-cell disease
Z) phenylketonuria
Answer: W) hemophilia
TOSSUP
2) CHEMISTRY Multiple Choice Hydrofluoric acid is dissolved in a
solution containing sodium fluoride in aqueous solution. Which of the
following is true?
W) sodium hydride will precipitate out of the solution
X) the dissociation of hydrofluoric acid will be inhibited
Y) diatomic fluorine will form
Z) the dissociation of hydrofluoric acid will cause sodium fluoride to come
out of solution
Answer: X) the dissociation of hydrofluoric acid will be inhibited
TOSSUP
3) PHYSICS Multiple Choice The reason that wind turbines generally don’t
have more than a few blades is that:
W) additional blades would be too expensive
X) additional blades add a dangerous amount of torque to the structure
Y) additional blades would pass through the turbulence of the one before it,
reducing efficiency
Z) additional blades increase friction on the overall structure
Answer: Y) additional blades would pass through the turbulence of the one
before it, reducing efficiency
TOSSUP
4) ASTRONOMY Short Answer The periodic cycle of mass extinctions in
the geologic time scale can be explained by a hypothesis postulating that the
Sun is being orbited by a hypothetical low-mass star. What is the name of
this star?
Answer: Nemesis
TOSSUP
5) BIOLOGY Multiple Choice Which of the following statements best
describes pleiotropy?
W) the ability of parental inheritance to affect gene expression
X) the ability of two alleles to both express phenotypes in an individual
Y) the ability of multiple genes to be controlled as a unit
Z) the ability of one gene to control multiple phenotypes
Answer: Z) the ability of one gene to control multiple phenotypes
TOSSUP
6) CHEMISTRY Multiple Choice Two ionic compounds are combined in
aqueous solution and a precipitate forms. Which of the following could not
be the precipitate?
W) AgCl
X) PbI
Y) NH4NO3
Z) CuSO4
Answer: Y) NH4NO3
TOSSUP
7) BIOLOGY Multiple Choice The mottled fur color of certain animals can
be explained by which of the following phenomena?
W) epistasis
X) polygenic inheritance
Y) X-chromosome inactivation
Z) aneuploidy
Answer: X-chromosome inactivation
TOSSUP
8) PHYSICS Short Answer What is the term given to describe the angle with
which a fluid vector strikes an arbitrary reference line?
Answer: angle of attack
TOSSUP
9) EARTH SCIENCE Short Answer What is the name for the body of water
created when a meander is cut off from the rest of a river?
Answer: oxbow lake
TOSSUP
10) CHEMISTRY Multiple Choice Three samples of equal amounts of
Co[NH3]4Cl3 (tetraammine cobalt trichloride) are dissolved into water. Each
produces a different amount of ions in solution. Why could this be?
W) the ions of Co[NH3]4Cl3 dissociate one by one under different conditions
X) the chloride ions could be coordinated or ionically associated in the
different samples
Y) Le Châtelier’s principle inhibits extensive dissociation of chloride ions
Z) different structural conformations of Co[NH3]4Cl3 cause the NH3 to block
water from associating with chloride ions
Answer: X) the chloride ions could be coordinated or ionically associated in
the different samples
TOSSUP
11) EARTH SCIENCE Multiple Choice Which of the following is not a type
of crystal conformation?
W) simple cubic
X) body-centered cubic
Y) face-centered cubic
Z) edge-centered cubic
Answer: Z) edge-centered cubic
TOSSUP
12) BIOLOGY Multiple Choice Which of the following correctly describes
ant males?
W) they have an X chromosome and a Y chromosome
X) they have only an X chromosome
Y) they have two Z chromosomes
Z) they are haploid
Answer: Z) they are haploid
TOSSUP
13) CHEMISTRY Short Answer An ion that does not directly participate in
a reaction is called what?
Answer: spectator ion
TOSSUP
14) ASTRONOMY Multiple Choice On an H-R diagram, why does the
Hertzsprung gap exist?
W) the age of the universe is not old enough for stars to reach it
X) stars in the Hertzsprung gap are theorized to be made of non-baryonic
matter
Y) it indicates the point when stars stop hydrogen fusion but have not started
helium fusion, which is a relatively short time period
Z) stars in the Hertzsprung gap have not began fusing heavy metals
Answer: Y) it indicates the point when stars stop hydrogen fusion but have
not started helium fusion, which is a relatively short time period
TOSSUP
15) PHYSICS Multiple Choice What do density, temperature, enthalpy,
volume, and entropy all have in common?
W) they are intensive properties
X) they are colligative properties
Y) they are state functions
Z) they are equations of state
Answer: Y) they are state functions