Characteristics of Life
Write 1 characteristic that is true of all living things.
Made of cells, have DNA, reproduce, grow and develop, maintain homeostasis, evolve, respond to the environment, use energy
Who gave cells their name?
Which type of cell has NO nucleus?
Prokaryote
What is the control center of the cell, where the DNA is contained?
What tool do we use to look at cells?
Microscope
What word means "to maintain a stable internal environment?"
Homeostasis
What did Virchow discover?
All cells come from other cells
What type of cells do humans have?
Eukaryotic; animal cells
What is the hard structure that protects and supports plant cells?
Cell Wall
What is an "autotroph?"
Organism that gets energy from the sun / a producer
How many characteristics of life (what number?) must be TRUE for something to be considered "alive?"
8
What did Schwann discover?
All animals are made of cells
Chloroplast, cell wall, shape
What is the function of ribosomes?
Make proteins
What are the 3 things you must do when you are finished using a microscope?
Turn to the scanning lens, move the stage down, cover it
Write an example of a multicellular heterotroph.
(any animal or fungus)
When we put all of the discoveries of the scientists together, we have one "big idea" with 3 parts about cells. What is the name of this idea?
The Cell Theory
Describe how chloroplasts and mitochondria work together in a plant cell.
Chloroplasts create food, mitochondria take that food and create energy
Why did Hooke choose "cells" as their name?
They reminded him of small rooms / monastery rooms / prison cells
Give TWO reasons why viruses are NOT considered living things.
They do not have cells, cannot reproduce alone, do not use energy, do not respond to their environment, do not grow and develop...
Which scientist saw moving cells under a microscope after he looked at dental scrapings?
When we look at cork under a microscope, we see something surprising. What is it?
The nucleus is not visible because the cells are dead
What are the 3 structures that ALL CELLS have?
Cell membrane, cytoplasm, DNA (genetic material), ribosomes
What is the difference between "grow and develop" and "evolve / evolution?"
Growth only occurs in one organism alone. Evolution must occur in a group over a long period of time.