COMPREHENSIVE TEST BANK MIDTERM EXAM 2026-2027||
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ANSWERS: nondisjunction error
What is the most common cause of Down syndrome?
a. paternal translocation
b. paternal viral illness
c. nondisjunction error
d. maternal viral illness
ANSWERS: exotoxins
These are proteins released by bacteria during growth.
a. endotoxins
b. TNF
c. exotoxins
d. pili
,ANSWERS: klinefelter
A person with XXXY has the genetic disorder called _____ syndrome.
a. down
b. fragile x
c. klinefelter
d. turner
ANSWERS: autosomal recessive
Cystic fibrosis is caused by an _________ gene.
a. x-linked dominant
b. autosomal recessive
c. autosomal dominant
d. x-linked recessive
, What causes the clinical manifestations of confusion, convulsions,
cerebral hemorrhage, and coma in hypernatremia?
A) high sodium in the blood vessels pulls water out of the brain
cells into the blood vessels, causing brain cells to shrink
B) high sodium in the brain cells pulls water out of the blood vessels
into the brain cells, causing them to swell
C) high sodium in the blood vessels pulls potassium out of the
brain cells, which slows the synapses in the brain
D) high sodium in the blood vessels draws chloride into the brain
cells followed by water, causing the brain cells to swell
ANSWERS: A- high sodium in the blood vessels pulls water out of the
brain cells into the blood vessels, causing brain cells to shrink
ANSWERS: mitochondria
Organelle that contains the code needed for oxidative phosphorylation
is:
a. mitochondria
b. lysosomes
c. nucleus
d. vacuoles
, ANSWERS: Apoptosis
Programmed cell death is an active process of cellular self-destruction.
It is also referred to as
a. apoptosis
b. necrosis
c. metastatic calcification
d. gangrene
ANSWERS: Histones
The nucleolus is a small dense structure composed mainly of RNA and
cellular DNA. What causes the DNA to bind and fold into
chromosomes?
a. amino acid sequences
b. histones
c. polymerase
d. miRNA
x- linked recessive disease
Duchenne's Muscular Dystrophy is never transmitted from father to son.
It is a good example of
a. sex-linked recessive disease
b. autosomal dominant disease
c. x-linked recessive disease
d. chromosome structure abnormality disease