The Characteristics of Living Things
Which characteristic is shown here: Humans grow old and eventually die.
Living things have a lifespan.
True
What are the small structures within a cell called?
Organelles.
What do Endocytosis and Exocytosis both have in common?
They are the process of moving material across the cell.
What is Diffusion?
The movement of particles from an area of high concentration to a area of low concentration.
Which characteristic is shown here: Plants obtain energy from sunlight.
Living things require energy.
What is the general purpose of a cell membrane?
The cell membrane is a natural gatekeeper around a cell, controlling the movement of materials into and out of a cell.
What is the watery fluid in the cell that takes most of the cell volume?
Cytoplasm.
What is the process of Endocytosis?
What is Osmosis?
The diffusion of water across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration.
Which characteristic is shown here: Living things release unusable/unwanted material to the external enviorment.
Living things produce waste.
The cell theory states that living things do not have to be composed of any cell. True or False?
False. (The cell theory states All living things are composed of one or more cells.)
Which organelle is known as the control centre of the cell due to it regulating all cellular activities?
Nucleus.
What is the process of Exocytosis?
Non-dissolved particles, or large amounts of material being moved from the cells cytoplasm to the outside enviorment.
What is a concentration gradient?
A difference of concentration of a substance between two areas.
Which characteristic is shown here: Animals trying to escape from their predators.
Living things respond to changes in their enviorment.
What is the definition of selectively permeable membrane?
Allowing certain materials to travel through the membrane.
What is a Vacuole?
Fluid-filled compartments the cell uses for storage. To store water, nutrients, sugar, and sometimes even to store wastes.
What does the Golgi apparatus do?
Packs proteins that then are released into the outside environment by Exocytosis.
How does turgor pressure occur?
When plant roots absorb water, the sudden influx of water fills the central vacuole and cytoplasm which exerts pressure against the cell wall and causes the cell to swell.
Which characteristic is shown here: Living things produce offspring/decendants.
Define the structure of the Cell Membrane.
Double layers of fat, Proteins, and Protein channels.
Name all the parts of a Plant Cell.
Chromosomes, Nucleus, Cloroplast, Cell Membrane, Cytoplasm, Cell Wall, and Vacuole.
What is the difference between Endocytosis and the type of Endocytosis, Phagocytosis?
In Phagocytosis, the cell extends finger-like projections of its cell membrane called pseudopods, around a solid piece of material outside the cell. The pseudopods that surround the object eventually join to form a vacuole in the cells cytoplasm.
Sugar, salt, and proteins.