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Fall Semester Exam
Test Description: Fall Semester Exam 2008-2009
Instructions: Answer all questions to get your test result.
1) A star is born when
A
a protostar begins to cool
B
helium and oxygen combine
C
a nebula expands
D
nuclear fusion starts
2) A geneticist uses pedigrees to
A
trace the inheritance of traits through generations of families
B
prove that sex linked traits are caused by dominant alleles
C
replicate DNA
D
create genetic crosses
3) Waves are classified according to
A
their size
B
their shape
C
their source
D
how they travel
4) What happens during meiosis?
A
chromosome pairs remain together when new sex cells are formed
B
chromosome pairs separate to form new sex cells
C
each sex cell loses half of its chromosomes
D
each sex cell copies itself to form four new chromosomes
5) Down syndrome occurs most often when
A
a person inherits a recessive allele
B
blood fails to clot properly
C
sickle shaped cells become stuck in blood vessels
D
chromosomes fail to separate properly during meiosis
6) In which direction(s) do seismic waves travel from their point of origin?
A
north to south only
B
in all directions
C
toward Earth\'s core only
D
toward the equator only
7) At the full moon, the combined gravitational pulls of the sun and moon produce the biggest difference between low and hight tide, called
A
surface current
B
spring tide
C
neap tide
D
rip current
8) Why are sex linked traits more common in males than in females?
A
any allele on the Y chromosomee will be codominant with the matching allele on the X chromosome
B
all alleles on X chromosomes are dominant
C
a recessive allele on the X chromosome will produce the trait in a male
D
all alleles on the Y chromosome are recessive
9) One piece of evidence that supports the big bang theory is the observation that most galaxies are moving
A
toward one another
B
away from one another
C
toward our galaxy
D
in random
10) Stars are classified according to their
A
size, brightness, temperature
B
size, distance, brightness
C
distance, size, color
D
color, brightness, temperature
*select an answer for all questions
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