LSUE BIOLOGY 1001 MIDTERM EXAM 2024 WITH 100% CORRECT ANSWERS
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LSUE BIOLOGY 1001
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LSUE BIOLOGY 1001
LSUE BIOLOGY 1001 MIDTERM EXAM 2024 WITH 100% CORRECT ANSWERS
.A benign tumor differs from a malignant tumor because
a)A.Benign tumors arise by transformation
B.Benign tumors will not kill you
C.Cells of benign tumors do not metastasize. - ANSWER-Cells of benign tumors do not metastasize.
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LSUE BIOLOGY 1001 MIDTERM EXAM
2024 WITH 100% CORRECT ANSWERS
.A benign tumor differs from a malignant tumor because
a)A.Benign tumors arise by transformation
B.Benign tumors will not kill you
C.Cells of benign tumors do not metastasize. - ANSWER-Cells of benign tumors do not metastasize.
.A mature ovary, specialized as a vessel that houses a protects seeds, is a
A) cotyledon
B) seed coat
C) ovule
D) fruit
E) seed - ANSWER-D) fruit
.A physical or chemical agent that changes the nucleotide sequence of DNA is called a
A) codon
B) anticodon
C) mutagen
D) terminator
E) transposon - ANSWER-C) mutagen
.A population of 1,000 birds exists on a small Pacific island. Some of the birds are yellow, a characteristic
determine by a recessive allele. The others are green, a characteristic determined by a dominant allele.
A hurricane on the island kills most of the birds from the population. Only ten remain, and those birds all
have yellow feathers. Which of the following statements is true?
,A) All of the choices are correct
B) The ten remaining birds will mate only with each other, and this will contribute to gene flow in the
population
C) Assuming that no new birds come to the island and no mutations occur, future generations of this
population will contain both green and yellow birds
D) The hurricane has caused a population bottleneck and a loss of genetic diversity
E) This situation illustrates the effect of a mutation event - ANSWER-D) The hurricane has caused
population bottleneck and a loss genetic diversity
.A woman has been trying to conceive for several years, unsuccessfully. At a fertility clinic, they discover
that she has blocked Fallopian tubes. Using modern technologies, some of her eggs are removed,
fertilized with her husband's sperm, and implanted into her uterus. The procedure is successful, but the
couple discovers that their son is color blind and the blood type O. The woman claims that the child
can't be theirs since she has blood type A and her husband has blood type B. Also, neither parent is color
blind, although one grand parent (the woman's father) is also color blind. As a genetic counselor, you
would explain to the parent that
A) the eggs must have been accidentally switched, since the baby's blood type has to match one of his
parents
B) each parent could have contributed one recessive allele, resulting in type O blood
C) the eggs must have been accidentally switched, since a type A parent and a ty - ANSWER-B) each
parent could have contributed one recessive allele, resulting in type O blood
.According to scientist, about what percentage of men currently living in Central Asia may be descended
from the Mongolian ruler Genghis Khan?
A) 4%
B) 8%
C) 25%
D) 40% - ANSWER-B) 8%
.All of the following affects the distribution of biomes EXCEPT
, A) global wind circulation
B) distance above the sea level
C) latitude
D) soil type
E) climate - ANSWER-soil type
.All the offspring of a cross between a black eyed mendelian and an orange eyed mendelian have black
eyes. What is the expected phenotypic ration of a cross between two orange eye mendelians?
A) 3 black eye: 1 orange eye
B) 0 black eyed: 1 orange eyed
C) 1 black eyed: 3 orange eyed
D) 1 black eyed: 0 orange eyed - ANSWER-B) 0 black eyed: 1 orange eyed
.Amniocentesis and chorionic villus sampling allows for ____ and ____ of the fetus so that it can be
tested for abnormalities
A) imaging ...karyotyping
B) sexing.... imaging
C) karyotyping... biochemical testing
D) direct observation.. biochemical testing - ANSWER-D) direct observation.. biochemical testing
.An organ represents a higher level of structure than the tissue composing it and performs functions that
the tissues cannot perform alone. This is an example of the principle of
A) emergent properties
B) cellular regulation
C) cellular communication
D) biotechnology
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