Characteristics of Life
What is a Cell?
Smallest living units in a living thing.
All organisms are made of
One or more cells
What organelle is responsible for controlling the cell?
Nucleus
What is a Tissue?
When similar cells that perform the same function
What is the definition of homeostasis?
An organism's ability to maintain internal balance
Name for cells that are simple and always make-up single-celled organisms
Prokaryotic
All cells arise from
Pre-existing cells
What organelle creates proteins?
Ribosomes
What is an Organ?
A body structure made of different kinds of tissues that work together.
What is the definition of stimulus?
Anything that is inside or outside the body that causes the body to react
Name for cells that are complex and make-up every multi-cellular organism
Eukaryotic
Cells are the
Structural and functional unit of life/ building blocks of life
What structure surrounds the cell membrane in a plant cell?
Cell wall
What are the levels of organization in order from smallest to largest?
Cell, tissue, organ, organ system, organism
What is the definition of a response?
What are the main differences between prokaryotic and eukaryotic cells?
Eukaryotic: have nucleus, more organelles/more complex, can be single-celled or multicellular organisms
Prokaryotic: do not have a nucleus, simple, always single-celled organisms
Name one scientist who contributed to Cell Theory
Robert Hooke, Francesco Redi, Anton Von LeeuwenHoek, Hans and Zacharias Janssen, Robert Brown, Matthias Schleiden, Theodor Schwann, Robert Remak, Rudolf Virchow, Louis Pasteur
What organelles are only found in plant cells?
Chloroplasts and a cell wall
Name an Organ in the human body
Heart, Stomach, Brain, Lungs, Kidneys
What body system moves blood, nutrients, and oxygen throughout your body?
Circulatory system
What are the 8 characteristics of life?
DNA, Organization, Growth, Stimulus, Reproduction, Energy, Adaptation, Cells, Homeostasis
What scientific tool was important to the Cell Theory?
The microscope
What is the difference between the chloroplast and mitochondria?
Chloroplast: converts sunlight into food and is only found in plant cells
Mitochondria: converts food into energy and found in both plant and animal cells
What are all 10 different organ systems?
Nervous system, digestive system, endocrine system, circulatory system, respiratory system, integumentary system, immune system, excretory system, skeletal system, and muscular system
What is the difference between structure and function?
Structure is the arrangement and relationships between things, how something is put together
Function is how something operates, the specific job it has