Cells Flashcards
(24 cards)
What are cells?
Cells are the basic unit and function of all living things.
What are 3 functions of ALL cells?
Obtaining energy, conserving nutrients, and producing waste.
What are 3 key points of cell theory?
The cell theory states that all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells
What is the cell theory?
An explanation of the relationship between living things and cells.
What is an example of something that is big enough to see without magnification, and then explain what it looks like under a microscope.
A finger, and when looked under a microscope you can see a fingerprint.
What are main differences between cell walls and cell membranes
A cell wall is a rigid structure found primarily in plant cells, located outside the cell membrane, and provides structural support to the cell, while a cell membrane is a flexible barrier present in all cells, acting as a selective barrier to regulate what enters and exits the cell
What are some main differences between plant cells and animal cells.
Plant cells have a cell wall in addition to a cell membrane, where animal cells have only a cell membrane. Plants use cell walls to provide structure to the plant. Plant cells contain organelles called chloroplasts, while animal cells do not.
Are there more tissues or organs in the body. Explain
If we look at it, an organ is made up of two or more tissues; therefore, there are more tissues than organs in our body.
Why do cells have so many different organelles and structures?
Cells have many different organelles and structures because each structure is specialized to perform a particular function
What does the vacuole do?
The vacuole is like the storage closet of the cell. It holds all of the food, water and other materials needed by the cell.
What does the Nucleus do?
The nucleus is like the brain of the cell. It controls all of its actions, and it holds all of the genetical information in the form of DNA.
What does the lysosomes do?
They break down excess or worn-out cell parts, and break down large food particles and turns them into smaller food particles.
What does the cytoplasm do?
Cytoplasm holds the internal components of cells in place and protects them from damage
What does the Mitochondria do?
Mitochondria are like the powerhouse of the cell, it converts energy stored in food into energy that the cell can use to live and function.
What does the Chloroplast do
An organelle that captures energy from sunlight and changes to an energy form that cells can use in making food. Chloroplast makes food
What does the Golgi Apparatus do?
This organelle is the warhouse of the cell. It receives proteins and packages it up to be shipped to other parts of the cell
What does the Ribosomes do?
A ribosome is the cellular machinery responsible for making proteins
What does the Cell Membrane do?
The cell membrane regulates the transport of materials entering and exiting the cell.
What does the Cell Wall do?
It provides the cell with structural support, shape, protection, and functions as a selective barrier.
Nucleolus
Produces and assembles ribosomes (the babysitter)
Nuclear Membrane
Separates the nucleus from the cytoplasm
Centrosomes
Organizes microtubes
Rough ER
Process protein
Smooth ER
Makes hormones and lipids
