Lab Exam 1: Microscopes, Tissues, Bones Flashcards
Primary job of cytoplasm
The region between the nucleus and the plasma membrane.
It’s where most of the work of the cell is done.
Filled with cytosol (mostly water)
Primary job of golgi apparatus
consists of flattened membranous sacs
Modifies products of the ER
Manufactures certain macromolecules
Sorts and packages materials into transport vesicles
Primary job of mitochondria
sites of cellular respiration
The folds in the inner membrane are called cristae
Cristae present a large surface area for enzymes that synthesize ATP
They separate the inner mitochondrial matrix from the intermembrane space
Primary job of the nucleus
The nucleus houses the cell’s DNA genome
It is surrounded by a nuclear envelope that regulates access to the DNA
Primary job of the plasma membrane
Membranes form barriers to demarcate the cell
Also isolate parts within the cells
Outer membrane is called plasma membrane
Primary job of the ribosome
Locations of protein synthesis
mRNA tells ribosomes how to make proteins
Primary job of the rough endoplasmic reticulum
Has bound ribosomes, which secrete proteins
Distributes transport vesicles
Vesicles are packages bounded by membrane
Is a membrane factory for the cell
Primary job of the smooth endoplasmic reticulum
Engages in metabolism
Stores Calcium
What compounds are attracted to and/or easily dissolve in water
Hydrophilic compounds
What compounds are repelled by water and do not easily dissolve
Hydrophobic compounds
When using a compound microscope, which objective should you always start looking for your specimen on
Scanning (red) objective lens
4x magnification
The course adjustment (focus) should only be used with which objective
scanning objective lens (red)
4x magnification
If I cannot locate the specimen using the scanning objective I should first check these 2 things
- stage to ensure specimen is directly below objective
- Objective is properly locked in place
If I check stage and objective and the specimen is still not in focus what should you do
start making large adjustments of the focus using the course dial while looking down at objective
How much magnification is used using the scanning power objective (red)
Total magnification=40x
Ocular lens=10x
scanning power lens=4x
