Levels of Organization
What is the smallest unit that still performs the characteristics of life?
A cell
In a cell, materials can be exchanged through active or passive transport. The main difference between the two processes is that one requires ______ and the other does not.
Energy
What is the name of the process where one cell divides to form two identical daughter cells?
Mitosis
In a cell, materials can be exchanged through active or passive transport. The main difference between the two processes is that one requires ______ and the other does not.
Energy
What is a living thing capable of carrying out all of the functions of life called?
Organism
What is the difference between a cell and an atom?
Cells are living, atoms are nonliving.
To maintain a balance between the inside needs of a cell versus its environment, a cell must obtain and use energy, make new cells, exchange materials, and eliminate wastes. What is this balance called?
Homeostasis
Cells can divide in a process called mitosis. Why does mitosis occur in a multicellular organism?
To grow and repair
How does a cell get energy to perform active transport?
From the process of cellular respiration
What type of cell does not contain a nucleus?
Prokaryote
What do cells need in order to survive?
Nutrients
oxygen or carbon dioxide
removal of waste
What is the process called where plants make their own food?
Photosynthesis
11. Before a cell divides, the genetic material called DNA is copied and bundled into structures called __________.
Chromosomes
Why is passive transport like floating in a lazy river?
Passive transport does not require energy and floating in a river does not use energy.
True or False: All tissues and organs in an organism are made up of the same type of cell.
False
What is tissue?
A group of similar cells working to perform the same function
What input materials are needed for a plant to make its own food?
Water
Carbon dioxide
Sunlight
How many steps are there in mitosis? Bonus points if you can name them :)
4 steps:
Prophase
Anaphase
Metaphase
Telophase
Why is active transport like trying to swim backwards in a lazy river?
Active transport requires energy and swimming backwards requires energy.
Which cell structure dissolves at the beginning of mitosis and later reforms in the daughter cells?
Nucleus
What are the levels of organization for living things in order from smallest to largest?
Cell --> tissue --> organ --> organ system
What is the process called were all cells break down sugar to make energy? AND What is the name of the energy made?
Cellular respiration AND ATP
What are chromosomes?
Structures in cells that contain genetic material (DNA)
How does water travel in osmosis?
Water travels from high concentration to low concentration.
The cell membrane is semipermeable. Give an example of something would also be semipermeable?
Screen door
Window screen