Biology Lab (Microscope Chapter)

Why is it important to start with the scanning objective rather than the high-power objective?

Scanning provides the largest FOV, so the specimen is easier to locate

True or false: The coarse-focus knob should be used with the scanning, low-power, and high-power objectives.

False. Only high-power objective

if 4x objective is used, what is the microscope’s total magnification?

40x

Which objective lens provides the greatest resolving power?

Oil immersion

To move a specimen to the upper left, which way must you move the slide?

Down and to the right

As magnification increases, does the amount of light increase or decrease?

Decrease

What happens to the field of view as magnification increases?

Field of view decreases

__ __ is the distance between the objective lens and the specimen

Working distance

Why is a coverslip placed on a slide at a 45 degree angle?

Allows the liquid to spread beneath it while preventing air bubbles

Why are wet mounts used to view biological specimens in the laboratory?

Used to view living specimens

What is this?

A) Spirogyra
B) Volvox
C) Euglena
D) Anabaena

A) Spirogyra

What is this?

A) Spirogyra
B) Volvox
C) Euglena
D) Anabaena

C) Euglena

What is this?

A) Spirogyra
B) Volvox
C) Euglena
D) Anabaena

B) Volvox

What is this?

A) Spirogyra
B) Volvox
C) Euglena
D) Anabaena

D) Anabaena

Taxonomy is the study of ___ and ___ organisms. Each named group is called a ___.

naming, classifying, taxa

Taxonomy has two steps:

1. ___ and ___ the organism

2. Place it into a ____ system

1. Define, describe

2. classification

Systematics is the study of ___ and how they ___ relate. Cladistics ___ and ___ the relationship. Taxonomy ___ and ___ them.

organisms, evolutionarily, compares, determines, organizes, names

Carolus Linnaeus created a method called ___ ___. The scientific name is made of the ___ (capitalized) and the ___ ___ (uncapitalized). Names can be derived from ___, ___, ___, or other sources. The purpose of such is to give each species a ___ ___ name.

binomial nomenclature, genus, specific epithet, people, places, traits, universally recognized

Organisms are classified into eight ranks, what are they?

Hint: Dear King Phillip Came Over For Good Soup

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

What are the 3 domains?

Bacteria, Archaea, and Eukarya