Phys Lab Exam 1 Material

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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


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