Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 3, Problem 10RQ
Which plasma membrane component can be either found on its surface or embedded in the membrane structure?
a. protein
b. cholesterol
c. carbohydrate
d. phospholipid
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Which is incorrect about the plasma membrane?
a.
It has a hydrophobic interior and hydrophilic region that faces water.
b.
Cholesterol affects the fluid nature of the membrane.
c.
Proteins embedded in the lipid bilayer do not move.
d.
It surrounds all living cells
Which is a passive transport process?
a. Receptor-mediated endocytosis
b. Ion pump
c. Pinocytosis
d. Phagocytosis
e. Osmosis
Which observation proves that a cell is a eukaryote?
A) It contains DNA
B) It contains ribosomes
C) It has a cell membrane
D) It has DNA inside a nucleus
Chapter 3 Solutions
Concepts of Biology
Ch. 3 - Figure 3.7 What structures does a plant cell have...Ch. 3 - Figure 3.13 Why does the cis face of the Golgi not...Ch. 3 - Figure 3.22 A doctor injects a patient with what...Ch. 3 - When viewing a specimen through a light...Ch. 3 - The ____________ is the basic unit of life. a....Ch. 3 - Which of these do all prokaryotes and eukaryotes...Ch. 3 - A typical prokaryotic cell ________ compared to a...Ch. 3 - Which of the following is found both in eukaryotic...Ch. 3 - Which of the following is not a component of the...Ch. 3 - Which plasma membrane component can be either...
Ch. 3 - The tails of the phospholipids of the plasma...Ch. 3 - Water moves via osmosis _______. a. throughout the...Ch. 3 - The principal force driving movement in diffusion...Ch. 3 - Active transport must function continuously...Ch. 3 - What are the advantages and disadvantages of...Ch. 3 - Describe the structures that are characteristic of...Ch. 3 - In the context of cell biology, what do we mean by...Ch. 3 - Why is it advantageous for the cell membrane to be...Ch. 3 - Why does osmosis occur?Ch. 3 - Where does the cell get energy for active...
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- What is the first step in protein synthesis? A. making an RNA copy of the DNA within the nucleus B. making a sequence of amino acids C. forming peptide bonds between amino acids D. making a copy of RNA with DNA outside the nucleusarrow_forwardWhat is the function of tight junctions? a. To allow cells to move b. To keep cells from moving c. To seal neighboring cells together and prevent leakage of d. extracellular molecules† e. To keep cancer cells together, forming a tumorarrow_forwardA student explains that plant cells have cell walls but not cell membranes, while animal cells have cell membranes but not cell walls. What is wrong with this statement?arrow_forward
- Evaluate the importance of membranes to cells, emphasizing their various functions.arrow_forwardWhich statement correctly describes a difference between simple diffusion and facilitated diffusion? A. Facilitated diffusion uses a protein; while simple diffusion does not B. simple diffusion is used to transport small molecules and facilitated diffusion is not C. simple diffusion moves molecules against a concentration gradient and facilitated diffusion moves molecules along a gradient D. Facilitated diffusion uses energy and simple diffusion does notarrow_forwardWhich statement describes all prokaryotic and eukaryotic cells? A. Ribosomes are present in the cytoplasm. B. Materials are stored in vacuoles. C. Chloroplasts are used for photosynthesis. D. Cell walls provide support and shapearrow_forward
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