Lab 3 Review

What is total magnification?

Ocular lens × objective lens

What is the scanning objective?

4x (lowest power)

Which knob is used first to focus?

Coarse adjustment knob

What is resolution?

Ability to distinguish two close objects

What is the function of the nucleus?

Contains DNA

What is the function of mitochondria?

Produces ATP (energy)

What do ribosomes do?

Protein synthesis

What does rough ER do?

Protein synthesis and transport

What does smooth ER do?

Lipid synthesis and detox

What does the Golgi apparatus do?

Modifies and packages proteins

What do lysosomes do?

Break down waste

What are the 4 tissue types?

Epithelial, connective, muscle, nervous

What is epithelial tissue function?

Protection, absorption, secretion

What is simple epithelium?

One layer of cells

What is stratified epithelium?

Multiple layers

What is connective tissue function?

Support and binding

What is muscle tissue function?

Movement

What is nervous tissue function?

Communication

What are the main parts of a microscope?

Ocular lens, objective lens, stage, light source

What is field of view?

Area visible through microscope

What is depth of field?

Thickness of specimen in focus

How are epithelial tissues classified?

By layers and cell shape

What is simple squamous epithelium?

Thin flat cells for diffusion

What is stratified squamous epithelium?

Multiple layers for protection