Test Flash Cards
Cell theory
1st statement: all living things are composed of cells
2nd statement: cells are the basic unit of structure and function in living things
3rd statement: new cells are made from cells that already exist.
How specialized cells share a division of labor and what types of organisms they are found in.
Specialized cells share a division of labor because they perform specific functions that benefit the entire organism. Meaning one cell does one job and another cell does a different job. They are found in multicellular organism. An example of one is a white blood cell.
Five levels of organization and definitions for each
- Cell: the basic unit of structure and function in living things: blood cell
- Tissue: A group of similar cells that perform a specific function: bone tissue
- Organ: A body structure that is composed of different kinds of tissues that work together: kidney
- Organ system: A group of organs that work together to perform a major function: reproductive system
- Organism: a living thing: a human.
Difference between an element and a compound.
And element is A pure substance that cannot be broken down into other substances by chemical or physical means and a compound is A substance made of two or more elements chemically combined in a specific ratio, or proportion.
Functions of the four organic compounds found in cells.
- Carbohydrates: when you eat food with starch in it carbohydrates break down the starch into glucose and then the glucose which is a sugar your body can use for energy.
- Lipids: They contain more energy than carbohydrates. Cells store energy from lipids away for later use.
- Proteins: much of a cells structure and function depends on proteins. Proteins form part of a cells membrane. Proteins also make up parts of the organelles within a cell. A group of proteins called enzymes are used to speed up chemical reactions.
- Nucleic acids: Nucleic acids contain the instructions that cells need to carry out the functions of life.
Differences between organic and inorganic compounds.
The difference is that organic compounds contain carbon and inorganic compounds don’t.
The necessary inorganic compound that cells need to survive.
The necessary inorganic compound that cells need to survive is water.
The importance of water in cells.
Most chemical reactions in cells depend on substances that must be dissolved in water to react. Water also helps cells keep their shape. Water helps keep the temperature in cells from changing rapidly. Water also plays a key role in carrying substances in and out of cells. Water itself takes part in many chemical reactions within cells.
The difference between plant and animal cells.
The difference is that plant cells contain chloroplasts and have a cell wall but animal cells don’t and animal cells contain lysosomes but plant cells don’t. Animal cells also have smaller vacuoles.
Function of a cell wall.
The function of a cell well is to help protect and support the cell.
Function of ribosomes
The function of ribosomes is to produce proteins.
Function of the nucleus.
The nucleus’s function is to act the control center for the cell, directing all of the cells activities. Using DNA.
Function of a mitochondria
Mitochondria convert energy stored in food to energy the cell can use to live and function.
Difference between unicellular and multicellular organisms.
Unicellular organisms are organisms with just one certain cell. An example is an amoeba. A multicellular organism is an organism with multiple cells. An example is a human
Characteristics of all living things.
Cellular organization, metabolism, chemicals of life, response to surroundings, stimuli, growth and development, and reproduction.
