Characteristics of life
What is the 3rd Characteristic of Life
All living things grow and develop
How do we know something is Living or Non-Living?
By following the characteristics of life
What is the function of the cell membrane?
Controls what enters and leave the cell
What is a cell
The basic building blocks of life
Who is the best at biology
Me
Does a plant follow the characteristic of life?
Yes
Are viruses living or Non-living? Explain your answer
Viruses are Non-living
What is the power house of the cell
Mitochondria
What is the difference between plant and animal cells?
Plant cells have extra structures for support and photosynthesis (cell wall, chloroplast, large vacuole).
Animal cells are more flexible and have structures for movement and digestion (centrioles, lysosomes).
Do we have 48 chromosomes
Yes (Not 46)
What characteristic of life does a Virus not follow
Cellular Organization
Viruses are not made of cells.
Metabolism
They do not carry out metabolic processes (no respiration, no energy production).
Homeostasis
They do not maintain an internal environment.
Independent Growth
They do not grow — they are assembled inside host cells.
Name 5 examples between living and Non-living
Living Things
Humans
Animals
Plants
Bacteria
Fungi
Non-Living Things
Rocks
Water
Air
Metal
Plastic
What are not found in animal cells (plant cells only)
Cell wall, Chloroplasts, Large Central Vacuole
Cells are for living organisms and carry out life processes, while molecules form structures and substances cells use.
(8 × 8) + 3
67
What characteristic of life does a virus follow
✔ Characteristics Viruses Have
Genetic Material
Viruses contain DNA or RNA (for example, SARS-CoV-2 contains RNA).
Reproduction (but only inside a host)
They can reproduce, but only inside a living cell, such as bacteria (like T4 bacteriophage infecting E. coli) or human cells.
Evolution and Adaptation
Viruses mutate and evolve over time (e.g., new variants of Influenza A virus).
Why do scientists use multiple characteristics to define life instead of just one?
Scientists use multiple characteristics to define life because no single feature is enough to decide whether something is living.
How are prokaryotic cells different from eukaryotic cells?
prokaryotic have no true nucleus (DNA floats freely in cytoplasm)
eukaryotic have a true nucleus (DNA inside nuclear membrane)
Why are ribosomes essential for a cell?
Ribosomes are essential for a cell because they are the sites where proteins are made, and proteins are crucial for almost every cell function.
What time do we leave school
3:15 pm
Name all the Characteristics of life
1. All living things are made of one or more cells
2. All living things have a way to reproduce
3. All living things grow and develop
4. All living things share a universal genetic code
5. All living things must obtain material and use the energy from it
6. All living things maintain a fairly stable internal environment
7. All living things are able to respond to changes in their environment
8. As a group, all living things change over time
No, something that can move but cannot reproduce is not necessarily living.
Name all the cell structures in a animal cell
1. cell membrane
2. cytoplasm
3. Nucleus
4. mitochondria
5. Ribosomes
6. Endoplasmic Reticulum
7. Golgi apparatus
8. Lysosomes
How many cells do humans have?
30-37 trillion cells
Is Dylan Rodney getting a 100 on this project
yea