Biology Knowledge
Which invention most influenced the development of the cell theory?
Light Microscope
Cells with no nucleus or organelles
Prokaryotic
When dry environmental conditions exist, guard cells close the openings in leaves to reduce the loss of water from the plant. This process is an example of a feedback mechanism that plants use in order to
Maintain homeostasis.
Low concentration to high concentration
Active Transport
Molecules spread out to be even
Diffusion
Which statement is not part of the cell theory?
Cells are the basic unit of function of living things.
Cells are the basic unit of structure of living things.
Cells come from preexisting cells.
Cell parts such as chloroplasts are self-replicating.
Cell parts such as chloroplasts are self-replicating.
Cells with a nucleus and membrane bound organelles
Eukaryotic
If a solution is too hypotonic it can cause a cell to
burst
No energy required
passive transport
Molecules transfer through transport proteins
Facilitated diffusion
What is the difference between a plant cell and animal cell?
Plant cells have a cell wall, chloroplasts, and large vacuole
Single-Celled Organisms
Unicellular
A microscope has an eyepiece lens with a power of 10x. The higher objective lens being used has a power of 40x. The total magnification is
400x
High concentration to low concentration
passive transport
Water moves into the cell because there is more solute inside the cell
Hypotonic Solution
Eukaryotic cells are different than prokaryotic cells because eukaryotic cells have
a nucleus
Contain more than 1 cell
Multicellular
What does it mean to be selectively permeable
It allows somethings to go through it and others not.
Requires cellular energy
Active Transport
Water exits cell causing it to shrivel because there are more solutes outside of the cell.
Hypertonic Solution
What structure is responsible for allowing things into and out of an animal cell
Cell membane
What is the difference between prokaryotic and eukaryotic
Eukaryotes have membrane bound organelles and a nucleus
In your own words describe homeostasis
It is the natural point of a cell where everything is in sync.
Includes diffusion, osmosis, and facilitated diffusion
Passive
Diffusion of water
Osmosis