HISTOLOGY TEST #1 PRACTICE
QUESTIONS & ANSWERS
10% formalin is the same as which one of the following?
a) 1% formaldehyde
b) 4% formaldehyde
c) 37% to 40% formaldehyde
d) 10% formaldehyde - Correct Answers -b) 4% formaldehyde
Which of the following applies to glutaraldehyde?
a) remains stable even if pH level falls
b) tissues are fixed rapidly
c) best for thick tissue specimens
d) tissues are fixed as it penetrates - Correct Answers -d) tissues are fixed as it
penetrates
To prevent formalin pigment formation in tissues, formalin should be:
a) precipitated
b) coagulated
c) acidified
d) buffered - Correct Answers -d) buffered
Which of the following must be removed with a volatile hydrocarbon prior to
impregnation?
a) cedarwood oil
b) chloroform
c) carbon bisulfide
d) carbon tetrachloride - Correct Answers -a) cedarwood oil
, What is the meaning of the W in the diagram?
a) water soluble
b) water based
c) water neutral
d) water reactive - Correct Answers -Water reactive
Which one of the following elements would absolute ethanol be a poor choice to select
to use as a fixative?
a) glycogen
b) pigments
c) blood
d) lipids - Correct Answers -d) lipids
Refer to the schedule shown below. If processing was scheduled to begin at 8:00 am on
Monday, at what time on Tuesday will the tissues be ready to embed?
a) 5:00pm
b) 7:00 pm
c) 6:00 pm
d) 4:00 pm - Correct Answers -a) 5:00pm
Which of the following types of extinguishers should be used on a fire involving
formaldehyde?
a) A
b) B
c) C
d) D - Correct Answers -b) B
QUESTIONS & ANSWERS
10% formalin is the same as which one of the following?
a) 1% formaldehyde
b) 4% formaldehyde
c) 37% to 40% formaldehyde
d) 10% formaldehyde - Correct Answers -b) 4% formaldehyde
Which of the following applies to glutaraldehyde?
a) remains stable even if pH level falls
b) tissues are fixed rapidly
c) best for thick tissue specimens
d) tissues are fixed as it penetrates - Correct Answers -d) tissues are fixed as it
penetrates
To prevent formalin pigment formation in tissues, formalin should be:
a) precipitated
b) coagulated
c) acidified
d) buffered - Correct Answers -d) buffered
Which of the following must be removed with a volatile hydrocarbon prior to
impregnation?
a) cedarwood oil
b) chloroform
c) carbon bisulfide
d) carbon tetrachloride - Correct Answers -a) cedarwood oil
, What is the meaning of the W in the diagram?
a) water soluble
b) water based
c) water neutral
d) water reactive - Correct Answers -Water reactive
Which one of the following elements would absolute ethanol be a poor choice to select
to use as a fixative?
a) glycogen
b) pigments
c) blood
d) lipids - Correct Answers -d) lipids
Refer to the schedule shown below. If processing was scheduled to begin at 8:00 am on
Monday, at what time on Tuesday will the tissues be ready to embed?
a) 5:00pm
b) 7:00 pm
c) 6:00 pm
d) 4:00 pm - Correct Answers -a) 5:00pm
Which of the following types of extinguishers should be used on a fire involving
formaldehyde?
a) A
b) B
c) C
d) D - Correct Answers -b) B
