Characteristics of Life
The smallest functional unit of life
Cell
The control center of the cell.
Nucleus
This substance, only found in a plant, is made of cellulose and protects the cell.
Cell wall
This cell uses ______ instead of a nucleus.
Nucleoid
Viruses have the ability to...
The ability to create new organisms is called what?
Reproduction
The powerhouse of the cell.
Mitochondria
the pigment makes plants green.
Chlorophyll
Bacteria
Alive
Sweating is considered what characteristic of life?
Eliminating Waste
This synthesizes proteins in the cell.
Ribosomes
What is a storage unit for the cell?
Vacuole
The plasma membrane is a bilayer, consisting of two layers of...
Phospholipids
Infecting a host.
What does homeostasis mean?
Internal balance
Smooth ER produces this
Lipids
The process of getting energy from the sun.
Photosynthesis
This prevents the phospholipid tails from sticking together.
Cholesterol
This is a specific virus where the elderly have a higher chance of becoming very sick.
Covid 19
What is a stimulus?
A situation or event that causes a living thing to react.
A pair of cylindrical tubular organelles.
Centrioles
70% of water exists in this part of the cell.
Cytoplasm
The main function of a plasma membrane.
To protect the organelles within the cell from outside elements that could damage them.
Name three reasons why a virus isn't considered alive.
They lack cells.
They can reproduce only inside the cell of another organism.
Their genetic information is in the form of DNA or RNA but not both. (Living things have both DNA and RNA.)
Once assembled in a host cell, they do not change their size or composition.
They do not possess any structures or internal organization to perform biological processes.
They do not use energy or release waste.