
Exam 2 (1-49)
Authored by Hayla Watson
Science
University
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44 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a cell?
A tiny organ inside the body
The basic unit of life; all organisms are made of one or more cells
A protein molecule
A molecule that stores energy
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the cell theory?
Cells only exist in plants
Cells can be created spontaneously
All living things are made of cells; cells are basic units of structure and function; all cells come from pre-existing cells
Cells do not divide
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the functions of the plasma membrane?
Produces energy for the cell
Controls what enters/exits the cell; provides protection and support; maintains homeostasis
Stores genetic information
Synthesizes proteins
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the 2 primary components of the plasma membrane?
DNA and RNA
Phospholipids and proteins
Carbohydrates and lipids
Water and ions
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does “fluid mosaic” mean in reference to the plasma membrane?
The membrane is rigid and uniform
The membrane is a solid sheet of phospholipids
The membrane is flexible (fluid) with varied proteins embedded (mosaic)
The membrane is only made of proteins
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Are the two sides of the membrane symmetrical or asymmetrical?
Symmetrical
Asymmetrical
Both sides are identical
None of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the 3 lipid components of the plasma membrane and their functions?
Phospholipids (barrier), cholesterol (fluidity), glycolipids (communication)
Triglycerides, steroids, waxes
Proteins, nucleic acids, carbohydrates
Saturated fats, unsaturated fats, trans fats
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