Bio Flashcards
List the three parts of cell theory
- All organisms are made of cells
- Cells are the basic unit of life
- All cells come from pre-existing cells
Name microscope parts
Arm
Base
Coarse adjustment knob
Condenser lena
Diaphragm
Eyepiece
Fine adjustment knob
Light
Objective lens
revolving nose piece
Stage
stage clips
Tube
What is the vacuole and where is it located?
Larger in plant cells, typically floating roundish organelles they contain and remove substances like handling waste products and storing nutrients
What are lysosome and where are they located
Small round structures with small bits inside, they are unique to animal cells and ingest foreign substances
What is a ribosome and where is it located
Ribosomes produce and synthesize proteins, and can be free roaming or attached to the rough er
What and where is the golgi complex
Proteins are processed and transported, and it is similar to the ER but not attached to the nucleus
What and where is the cytoplasm?
Cytoplasm is all through the cell, a gel like substance that helps to move things through cells
What does the nucleus do
Control cell growth and contains dna
What does the nucleolus do
On the inside of nucleus, and assembles ribosomes
What does the cell membrane do
Act as a selectively permeable membrane to protect the cell and control what is inside
What does the mitochondria do
Produce atp
How to distinguish between smooth and rough ER
Smooth does not have ribosomes while rough does
What does a centriole do
control spindle fibres
What and where is a cloroplast
Shape similar to the mitochondria but more rough looking inside, it performa photosynthesis
Explain simple diffusion
Particles moving across the concentration gradient in order to reach dynamic equilibrium, or an isotonic solution
Explain facilitated diffusion
Particles that cannot pass through a cell membrane get help from channels to move through with the concentration gradient
Explain endocytosis
Cell ingesting a large material by engulfing it
Explain exocytosis
A cell expelling a large particle by pushing it away and pinching off to move it outside the cell, the reverse of endocytosis
What limits cell size
the decreased ability of a cell to absorb nutrients the larger it becomes
Why do cells divide
Growth, repair, reproduction
Describe interphase
The first phase of the cell cycle and the longest, cell replicates dna, grows, and performs daily functions
What are the phases of the cell cycle in order
Introphase
Mitosis
Cytokineses