Characteristics for Life
List the eight characteristics for life.
- Synthesis, Transport, Excretion, Regulation, Nutrition, Growth & Development, Respiration, and Reproduction
First to observe cells through a rudimentary microscope. He observed cork cells and the scrapings from his teeth. He coined the term “cells”
Robert Hooke
What type of cell is described below?
Free floating DNA - no nucleus. Has small circles of DNA called plasmids. Have cell walls. Small, simple.
Prokaryotes
Two adults have a child. Which characteristic for life does this represent?
What is reproduction?
This organelle is only present in plant and bacteria cells.
What is a cell wall?
Observed the first living cells in pond water. He called them “wee beasties”
Anton von Leewenhoek
What type of cell is being described below?
DNA is found in a bound nucleus. Have membrane bound organelles like mitochondria and chloroplasts. Only some have cell walls. Large, complex.
Eukaryotes
Your stomach grumbles when you wake up in the morning. Which characteristic for life does this represent?
What is gaining and using energy?
This organelle is the site of photosynthesis.
What is the chloroplast?
Botanist (studied plants) who concluded that all plants and plant parts are made of cells.
Mattias Schleiden
What three traits do all cells share?
Cell membrane
Cytoplasm
Ribosomes
My baby shoes are much too small for me now. Which characteristic for life does this represent?
What is growth and development?
This structure serves as the outer boundary of the eukaryotic cell.
Cell membrane
Helps process and package proteins and lipid molecules, especially proteins destined to be exported from the cell.
What is the Golgi apparatus?
Zoologist (studied animals) who conclude that all animals are made of cells.
Theodor Schwann
What type of cell is being described below?
Have a cell wall made of cellulose. Have chloroplasts that do photosynthesis. Rigid, straight lines. Have a large, central vacuole
Plant Cells
You breathe out carbon dioxide (which was made during cell respiration) and eliminate waste. Which characteristic for life does this represent?
Excretion
Name the three basics of cell theory.
All living things are made of cells, cells are the smallest unit of life, all cells come from pre-existing cells.
This organelle is present in plant cells, animal cells, and bacteria cells.
What are ribosomes?
Developed Endosymbiotic Theory. This is the idea that complex eukaryotes evolved when larger prokaryotes engulfed smaller prokaryotes. The two then formed a mutually beneficial relationship that led to a new organism. This is also called “pac-man” theory for short.
Lynn Margulis
What type of cell is being described below?
No cell walls - allows for movement. Have centrioles - used in cell division. Many small vacuoles. Have lysosomes. Irregular shapes.
Animal Cells