Structure
What is one organelle that eukaryotic cells have that prokaryotic cells don't?
A nucleus
How many phases are in the cell cycle?
3 phases- Interphase, Mitosis, Cytokinesis
Are viruses living or non living?
NON living
What are the 2 types of cell transport?
Active and Passive
Define homeostasis
Homeostasis is a balance, when a living organisms internal conditions are equal to that of the external conditions
DNA is made up of repeating units called ___________
Nucleotides
Which phase is the longest phase in the cell cycle
Interphase
What do viruses need to be able to reproduce?
A host
Active Transport requires ________
Energy or ATP
Define cell transport
cell transport is the movement of molecules across a cell membrane
What are the 3 parts that make up a nucleotide?
Phosphate, sugar, nitrogen base
What happens in Interphase and are the 3 phases within it?
The cell is preparing to divide. The phases are G1 phase, S-phase, G2 phase
What are the 2 types of virus replication?
The Lytic Cycle and the Lysogenic Cycle
What are the different types of passive transport (3)?
facilitated diffusion, Diffusion, Osmosis
Define passive transport
moves molecules WITH the concentration gradient from HIGH to LOW
A cells membrane is made up of a ___________ bilayer
Phospholipid
What are the phases in Mitosis
PMAT
Prophase, Metaphase, Anaphase, Telophase
Are viruses cells, or made up of cells?
No.
What are the types of active transport (3)?
protein pumps, endocytosis, exocytosis
Define Active Transport
the movement of molecules AGAINST the concentration gradient from LOW to HIGH
A phospholipid bilayer is made up of phospholipids, which have a ___________ head and _____________ tail
Hydrophilic head, hydrophobic tail
When in the cell cycle does DNA replication take place?
S phase
A virus that causes HIV attacks what type of cell?
Helper T cells
What is the purpose of cell transport?
To export and import materials in and out of the cell in an effort to maintain homeostasis.
Define permeability
cell membranes have pores that allow specific molecules to pass through