science cells and structures Flashcards
What are the 6 characteristics of all living things?
- Reproduce
- Changes to its environment
- Adapt/adaptations
- Needs food/energy
- Grows and develops
- Made of cells
These characteristics define what constitutes a living organism.
Define structure in the context of biology.
Body part or organ
Structure refers to the physical components of an organism.
What is the function of an organelle?
The specific task it carries out
Organelles are specialized structures within a cell that perform distinct functions.
What is adaptation?
Functions to survive in an environment
Adaptation refers to the changes an organism undergoes to better survive in its habitat.
What is a cell?
Basic unit of structures/life
Cells are the fundamental building blocks of all living organisms.
Label the control centre of a cell.
Nucleus
The nucleus is responsible for controlling cell activities and containing genetic material.
What part of the cell is compared to the factory floor?
Cytoplasm
Cytoplasm is where most cellular processes occur, similar to a factory floor.
What is the function of mitochondria compared to a factory?
Furnace room
Mitochondria are known as the powerhouses of the cell, generating energy.
What do chloroplasts do compared to a factory?
Solar panel converter
Chloroplasts are responsible for photosynthesis in plant cells.
How do you calculate the magnification power of a microscope?
Multiply the objective lens power by the eyepiece power
Common magnification calculations include: 10-10=100x, 4-10=40x, 10-40=400x.
What is the difference between unicellular and multicellular organisms?
- Unicellular: one cell
- Multicellular: multiple cells
Unicellular organisms perform all life functions within a single cell, while multicellular organisms have specialized cells.
Give an example of a unicellular organism.
Bacteria
Bacteria are among the simplest forms of life, consisting of a single cell.
Give an example of a multicellular organism.
Fungi, animals
Multicellular organisms are more complex and include a variety of life forms.
How does diffusion work?
Evenly distributing particles from higher to lower concentration
Diffusion is the movement of particles until they are evenly spread in a given space.
What is osmosis?
Movement of water through a semipermeable membrane from high to low concentration
Osmosis specifically refers to the movement of water, which is crucial for cellular functions.
storage room compared to a cell
vacuole
outer factory walls compared to a cell
cell membrane
factory fence compared to a cell
ribosomes
workers on assembly line
endoplasmic reticulum
packaging department compared to a cell
golgi body
smallest magnification of power
4-10=40x
medium power magnification
10-10=100x
high magnification power
10-40=400x