Vocab
The basic unit of life
Cell
Selectively permeable membrane
Cell Membrane
An organ with nerve endings that responds to stimulation
Brain
Group of cells that work together
Tissue
How are mitochondria and chloroplasts similar?
They both provide energy for the cell.
Organisms that consist of a single cell
Unicellular
Provides support and rigidity to cells, allowing plants to stand upright.
Cell Wall
What an organism does
Behavior
An energy-producing organelle
Mitochondrion
Why are plant cells and animal cells shaped differently?
Plant cells have a cell wall, whereas animal cells do not. Because of this plant cells are rigid and more square/rectangular in shape. Animal cells have a rounder/circular shape.
Organisms that consist of many cells
Multicellular
Describe the levels of organization of an organism.
Cell → tissue → organ → organ system → organism
An action that provokes a response.
Stimulus
Where photosynthesis takes place
Chloroplast
How do organ systems work together to keep an organism alive?
All organ systems depend on each other. Without the excretory system, the digestive system would not be able to filter out certain things. Without the circulatory system, the respiratory system would have no way to transport oxygen throughout the body.
Identify and describe all the sense organs of the human body.
The sense organs of the human body are the skin, eyes, ears, tongue, and nose.
A cell that transmits nerve impulse
Nerve Cell
A self-contained system within a larger system
Define what a cell is and its relationship to living and nonliving organisms.
Cells are the smallest unit that can be said to be alive. If something has cells it is living. If something does not have cells, it is nonliving.
Give an example of two organ systems working together.
The respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce
The circulatory system picks up oxygen in the lungs and drops it off in the tissues, then performs the reverse service for carbon dioxide.
Any structure inside a cell that performs a specialized function
Organelle
Senses a change in the internal or external environment
Sensory Receptor
Different tissues that perform a task
Organ
How do scientists use microscopes to classify organisms?
You can use a microscope to zoom in on the organism and identify if it is a unicellular or multicellular organism or whether it’s dead or alive/living or non-living.
How is your sense of smell related to your memory?
Humans’ sense of smell has a strong connection to the area of the brain that stores memories and emotions. This connection to the brain allows smells to trigger associated memories and emotions before a person can even describe the smells.