EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Textbook Question
Chapter 27, Problem 1TY
Which of the following features is common to prokaryotic cells?
- a. a nucleus, featuring a nuclear envelope with pores
- b. mitochondria
- c. plasma membranes
- d. mitotic spindle
- e. none of the above
Expert Solution & Answer
Summary Introduction
Introduction: Prokaryotic cells are primitive and most abundant types of cells present on the Earth. They differ in many features from the advanced eukaryotic cells found on the surface of the Earth.
Answer to Problem 1TY
Correct answer: Plasma membranes are the structures that are common to prokaryotic cells. Hence, the correct answer is option c.
Explanation of Solution
Reason for correct answer:
All type of cells possesses plasma or cell membranes. These membranes are made up of lipids and act as a protective barrier between the internal and external environment of the cell. So, plasma membranes are present in prokaryotic cells.
Option c. is given as “plasma membranes”.
The structure or feature that is common to prokaryotic cells is plasma membrane. Hence, the correct answer is option c.
Reasons for incorrect answer:
Option a. is given as, “a nucleus, featuring a nuclear envelope with pores”.
The prokaryotic cells do not possess a well-defined membrane bound nuclei, but it encompasses a nucleoid. Hence, option a. is incorrect.
Option b. is given as, “mitochondria”.
Mitochondria act as powerhouse for the eukaryotic cells. Prokaryotic cells do not contain mitochondria. Hence, option b. is incorrect.
Option d. is given as, “mitotic spindle”.
Mitotic spindles are collective web of fibers that are present in eukaryotic cells. These fibers are used during division of chromosomes. These structures are not present in the prokaryotic cells. Hence, option d. is incorrect.
Option e. is given as, “none of the above”.
Plasma membrane is common to prokaryotic cells and the correct option is answer c. Hence, option e. is incorrect.
Hence, the options a., b., d., and e. are incorrect.
Conclusion
The prokaryotic cells possess plasma membranes made up of lipids and proteins.
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Explain down bellow what happens to the cell in pictures not in words:
Decreased pH in mitochondria
Increased ATP
Decreased pH in cytosol
Increased hydrolysis
Decreasing glycogen and triglycerides
Increased MAP kinase activity
Poor ion transport → For each one:→ What normally happens?→ What is wrong now?→ How does it mess up the cell?
1.) Community Diversity:
The brown and orange line represent two different plant communities.
a. Which color represents the community with a higher species richness?
b. Which color represents the community with a higher species evenness?
Relative abundance
0.1
0.04
0.001
2 4 6
8
10 12 14 16 18 20 22 24
Rank abundance
c. What is the maximum value of the Simpson's diversity index (remember, Simpson's
index is D = p², Simpson's diversity index is 1-D)?
d. If the Simpson's diversity index equals 1, what does that mean about the number of
species and their relative abundance within community being assessed?
1.) Community Diversity:
The brown and orange line represent two different plant communities.
a. Which color represents the community with a higher species richness?
b. Which color represents the community with a higher species evenness?
Relative abundance
0.1
0.04
0.001
2 4 6
8
10 12 14 16 18 20 22 24
Rank abundance
c. What is the maximum value of the Simpson's diversity index (remember, Simpson's
index is D = p², Simpson's diversity index is 1-D)?
d. If the Simpson's diversity index equals 1, what does that mean about the number of
species and their relative abundance within community being assessed?
Chapter 27 Solutions
EBK BIOLOGY
Ch. 27.1 - Prob. 1BCCh. 27.2 - Prob. 1CCCh. 27.2 - Prob. 1BCCh. 27.2 - Core Skill: Connections Look ahead to Section...Ch. 27.2 - Structure and Movement Concept Check: Does the...Ch. 27.2 - Prob. 3BCCh. 27.2 - Prob. 3CCCh. 27.3 - Prob. 1CCCh. 27.3 - Prob. 1BCCh. 27.3 - Prob. 2CC
Ch. 27.5 - Prob. 1EQCh. 27.5 - Prob. 2EQCh. 27.5 - Prob. 1CCCh. 27 - Which of the following features is common to...Ch. 27 - The bacterial phylum whose members typically...Ch. 27 - Gram-staining is a procedure that microbiologists...Ch. 27 - Place the following steps in the correct order,...Ch. 27 - What ecological role do cyanobacteria play? a....Ch. 27 - Prob. 6TYCh. 27 - Prob. 7TYCh. 27 - Prob. 8TYCh. 27 - Prob. 9TYCh. 27 - Prob. 10TYCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 1COQCh. 27 - Prob. 2COQ
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