Phys Lab Exam 1 Material
If the ocular lens magnifies a specimen 10x, and the objective lens used magnifies the specimen 35x, what is the total magnification being used to observe the specimen?
350x
Basophils
A circulating leukocyte that produces histamine.
Neutrophils
A type of white blood cell that engulfs invading microbes and contributes to the nonspecific defenses of the body against disease.
Leukopenia
Abnormally low white blood cell count
Monocytes
An agranular leukocyte that is able to migrate into tissues and transform into a macrophage.
recessive allele
An allele that is masked when a dominant allele is present
dominant allele
An allele whose trait always shows up in the organism when the allele is present.
Heterozygous
An organism that has two different alleles for a trait
Homozygous
An organism that has two identical alleles for a trait
Phenotype
An organism's physical appearance, or visible traits.
Isotonic is
Equal solutions
True or False: A heterozygous individual will have two of the same allele in a chromosome pair.
False
True or False: You should always begin observation of specimens with the oil immersion lens.
False
Hypotonic is
Having a lower concentration of solute than another solution
incomplete dominance
Situation in which one allele is not completely dominant over another allele
Your lab microscope is parfocal. This means that __________.
The slide should be almost in focus when changing to higher magnifications.
Lymphocytes
The two types of white blood cells that are part of the body's immune system: B lymphocytes form in the bone marrow and release antibodies that fight bacterial infections; T lymphocytes form in the thymus and other lymphatic tissue and attack cancer cells, viruses, and foreign substances.
True or false: The inheritance of ABO bood type involves three possibles alleles
True
Eosinophils
a white blood cell containing granules that are readily stained by eosin.
Selective permeability is
ability of a membrane to regulate passage of materials into and out of the cell
In active or passive processes, the cell provides energy in the form of ATP to power the transport process.
active
parfocal microscope
allows for ease of focusing when switching from low to high power
Blood typing is based o the presence of proteins known as antigens or antibodies on the outer surface of the red blood cell plasma membrane,
antigens
A passive process, diffusion or osmosis is the movement of solute molecules from an area of greater concentration to an area of lesser concentration.
diffusion
Osmosis is
diffusion of water
Genotype
genetic makeup of an organism
A condition known as ------ can result when heterozygous individuals exhibit a phenotype intermediate between homozygous individuals and both alleles are expressed in the offspring.
incomplete dominance
Leukocytosis
increase in the number of white blood cells
Polycythemia
increased number of erythrocytes and hemoglobin in the blood
Resolution of a microscope refers to
its ability to show detail clearly
Anemia
lack of a normal number of red blood cells
total magnification of a microscope
magnification of the ocular lens x magnification of the objective lens
Simple diffusion is
movement of a solute from an area of high concentration to an area of low concentration
Diffusion is
movement of molecules from an area of higher concentration to an area of lower concentration.
Facilitated diffusion is
movement of specific molecules across cell membranes through protein channels
An allele is
one of several possible forms of a gene
In pinocytosis or phagocytosis, parts of the plasma membrane and cytoplasm extend and engulf a relatively large or solid material.
phagocytosis
Three types of formed elements found in the blood include erythrocytes, leukocytes, and
platelets
The allele that is expressed and not masked is the --- allele.
recessive
Erythrocytes
red blood cells
The microscope slide rests on the ------- while being viewed.
stage
field of view
the area visible through the microscope eyepiece
depth of field
the distance between the nearest and the furthest objects that give an image judged to be in focus in a camera.
working distance on a microscope
the distance between the objective lens and the stage
Active tranport is
the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
Passive transport is
the movement of substances across a cell membrane without the use of energy by the cell
Which of the following would require an input of energy?
vesicular transport
Hypertonic is
when comparing two solutions, the solution with the greater concentration of solutes
How do you clean the lenses of your microscope?
with special lens paper and cleaner
