BIOLOGY 1407 LAB EXAM 1
QUESTIONS AND ANSWERS
In your own words define taxonomy - Correct Answers -The branch of biology
concerned with naming and classifying organisims
List three methods for identifying an organism according to this lab manual. - Correct
Answers -1. Ask an expert
2. Field guide
3. Dichotomous key
Describe the process of identifying unknown organisms using a field guide - Correct
Answers -1. Look at the images that are available as plates in the front of the field guide
2. Check the range map to verify that the organism in the picture occurs in the region
you found your organism
3. Read the short description about the organism to make sure the details fit, pay
attention to the size color and marking.
Mammalogist - Correct Answers -A person who studies mammals
ornithologist - Correct Answers -A person who studies or is an expert on birds
herpetologist - Correct Answers -A person who specializes in the study of reptiles and
amphibians.
ichthyologist - Correct Answers -A person who studies fish
botanist - Correct Answers -a person who studies plants
Mycologists - Correct Answers -A person who studies fungi
bacteriologist - Correct Answers -A person who studies various kinds of bacteria
naturalist - Correct Answers -A person who studies nature and natural history
Starting with the light source, describe the path the light must travel to reach your eye. -
Correct Answers -The light travels from the base of the microscope - through the
diaphragm - through the slide - into the objective lenses - through the body tube - into
the occular lense - to the eye.
, Describe the process of bringing a specimen into focus using a compound light
microscope, under the high-powered objective. - Correct Answers -Scanning-center the
specimen- coarse adjustment-re-center-low power-fine adjustment-re-center-high
power-fine adjustment
Describe the relationship between field of view and magnification - Correct Answers -
They have inverse proportions. The higher the magnification the smaller the field of
view.
List four specimens that are better viewed through a dissecting microscope than a
compound light microscope. - Correct Answers -1. Rock samples
2. Algae
3.Insects
4.Flowers
Explain why parfocal imagining is important, especially when viewing very small
specimens using the high power objective. - Correct Answers -It's important because
you don't have to readjust the focus of the microscope very much when changing
objectives.
p - Correct Answers -Dominant phenotype
q - Correct Answers -Recessive phenotype
p^2 - Correct Answers -Genotypes frequency of homozygous dominant alleles
2pq - Correct Answers -Genotypic frequency of heterozygous alleles
q^2 - Correct Answers -Genotypic frequency of homozygous recessive alleles
ocular - Correct Answers -Also known as the eyepiece, the ocular contains a lens that
magnified the specimen 10x
Body tube - Correct Answers -The part connects the ocular to the arm of the
microscope. You should notice what the body tube rotates 360 degrees.
Arm - Correct Answers -The arm supports the body tube and is used as a handle to
carry most microscopes
When looking at the antibiotic sensitivity plates, some disks had large clear areas
around them. What do we call that area and what does it mean? - Correct Answers -The
area is called zone of inhibition, it means where the bacteria have not been able to grow
due to the effect of antibiotic.
QUESTIONS AND ANSWERS
In your own words define taxonomy - Correct Answers -The branch of biology
concerned with naming and classifying organisims
List three methods for identifying an organism according to this lab manual. - Correct
Answers -1. Ask an expert
2. Field guide
3. Dichotomous key
Describe the process of identifying unknown organisms using a field guide - Correct
Answers -1. Look at the images that are available as plates in the front of the field guide
2. Check the range map to verify that the organism in the picture occurs in the region
you found your organism
3. Read the short description about the organism to make sure the details fit, pay
attention to the size color and marking.
Mammalogist - Correct Answers -A person who studies mammals
ornithologist - Correct Answers -A person who studies or is an expert on birds
herpetologist - Correct Answers -A person who specializes in the study of reptiles and
amphibians.
ichthyologist - Correct Answers -A person who studies fish
botanist - Correct Answers -a person who studies plants
Mycologists - Correct Answers -A person who studies fungi
bacteriologist - Correct Answers -A person who studies various kinds of bacteria
naturalist - Correct Answers -A person who studies nature and natural history
Starting with the light source, describe the path the light must travel to reach your eye. -
Correct Answers -The light travels from the base of the microscope - through the
diaphragm - through the slide - into the objective lenses - through the body tube - into
the occular lense - to the eye.
, Describe the process of bringing a specimen into focus using a compound light
microscope, under the high-powered objective. - Correct Answers -Scanning-center the
specimen- coarse adjustment-re-center-low power-fine adjustment-re-center-high
power-fine adjustment
Describe the relationship between field of view and magnification - Correct Answers -
They have inverse proportions. The higher the magnification the smaller the field of
view.
List four specimens that are better viewed through a dissecting microscope than a
compound light microscope. - Correct Answers -1. Rock samples
2. Algae
3.Insects
4.Flowers
Explain why parfocal imagining is important, especially when viewing very small
specimens using the high power objective. - Correct Answers -It's important because
you don't have to readjust the focus of the microscope very much when changing
objectives.
p - Correct Answers -Dominant phenotype
q - Correct Answers -Recessive phenotype
p^2 - Correct Answers -Genotypes frequency of homozygous dominant alleles
2pq - Correct Answers -Genotypic frequency of heterozygous alleles
q^2 - Correct Answers -Genotypic frequency of homozygous recessive alleles
ocular - Correct Answers -Also known as the eyepiece, the ocular contains a lens that
magnified the specimen 10x
Body tube - Correct Answers -The part connects the ocular to the arm of the
microscope. You should notice what the body tube rotates 360 degrees.
Arm - Correct Answers -The arm supports the body tube and is used as a handle to
carry most microscopes
When looking at the antibiotic sensitivity plates, some disks had large clear areas
around them. What do we call that area and what does it mean? - Correct Answers -The
area is called zone of inhibition, it means where the bacteria have not been able to grow
due to the effect of antibiotic.
