True or False: All cells contain ribosomes and a cell membrane.�
true
100
What is the smallest unit that can perform the functions necessary of life?
cell
100
True or False: During diffusion, molecules move from high concentration to low concentration.
true
100
True or False: Ribosomes have membranes
False
200
What is specialization?
Adaptation for performing a specific function
200
True or False: An eye is a organ of the body
true
200
Where is the DNA located in a eukaryotic cell
Nucleus
200
True or False: Passive transport uses up energy.
False
200
Which two structures can surround a cell?
cell membrane and cell wall
300
What does a tree do to maintain homeostasis during the winter months?
lose leaves
300
The stomach, tongue, liver, and colon are part of an
a. organ system
b. organ
c. tissue
d. cell
a
300
True or False: A larger surface area-to-volume ratio allows the cell to better supply nutrients to its parts
True
300
What is a reason that human skin cells frequently undergo mitosis?
to replace dead or damaged skin cells
300
Which organelle has a double membrane, and the inner membrane is folded? The organelle contains its own DNA.
�
mitochondria
400
Eukaryotic cells undergo mitosis as part of the cell cycle. What does a cell produce as a result of mitosis?
A. two cells with identical genetic information
B. two cells that are larger than the original cell
C. two cells with genetic material that is different from the original cell
D. two cells that no longer participate in the stages of the cell cycle�
A
400
A cactus is covered with a waxy layer to prevent water loss. Which type of tissue is this?�
protective
400
According to Theodor Schwann, all parts of organisms are made up of ....
cells
400
Which of the following substances must animal cells take in from the environment to maintain homeostasis?
A. DNA
B. oxygen
C. chlorophyll
D. carbon dioxide�
B
400
Describe the structure of the endoplasmic reticulum
a system of golden membranes
500
What is cellular respiration?
It is the process that breaks down sugars to release energy.�
500
What are the 5 levels of organization in multicellular organisms? From simplest to most complex
cells, tissue, organs, organ system, organism.
500
What did Robert Virchow observe about cell division?
cells come from other cells
500
Where does the exchange of materials in and out of a cell take place?
at the cell membrane
500
What is the structure and function of the cytoskeleton?
a web of proteins that gives shape and support to the cell�