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For a more comfortable homework help experience, try HomeworkClinic.com.
Hi all,

I am looking to cross check many answers for all of the Activity questions in exercise 3. I haven't answered these questions from activity 8.

8.1  If you added more sodium to the extracellular solution, could the sodium substitute for the missing calcium?

8.2  How does botulinum toxin block synaptic transmission? Why is it used for cosmetic procedures?

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nkujfg
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2 years ago
 Hi all, just registered for and I have some knowledge to forward
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2 years ago
http://biology-forums.com/index.php?topic=15294.0
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2 years ago
If you added more sodium to the extracellular solution, could the sodium substitute for the missing calcium?
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2 years ago
If you added more sodium to the extracellular solution, could the sodium substitute for the missing calcium?

Calcium channels could possibly substitute for sodium channels to provide an influx of cation.
- Master of Science in Biology
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[Question 1 of 20 5.0/ 5.0 Points

The Golgi complex produces lysosomes.
 
  True
 False
 



Answer Key: True
Feedback: Good job!
Question 2 of 20 5.0/ 5.0 Points

Facilitated diffusion requires a membrane carrier protein and cellular energy.
 
  True
 False
 



Answer Key: False
Feedback: Good job!
Question 3 of 20 5.0/ 5.0 Points

The lipid bilayer is permeable to all of the following substances EXCEPT 
 A. steroids. 
 
 B. water. 
 
 C. oxygen. 
 
 D. amino acids. 
 
 E. fat-soluble vitamins. 



Answer Key: D
Feedback: Good job!
Question 4 of 20 5.0/ 5.0 Points

Peripheral proteins penetrate all the way through the phospholipid bilayer of the plasma membrane.
 
  True
 False
 



Answer Key: False
Feedback: Good job!
Question 5 of 20 0.0/ 5.0 Points

Osmotic pressure is the pressure needed to stop net water movement across membranes.
 
  True
 False
 



Answer Key: True
Feedback: Please review Chapter 3.
Question 6 of 20 5.0/ 5.0 Points

The cytoplasm is the term for 
 A. microtubules and microfilaments. 
 
 B. the fluid portion of the cell. 
 
 C. the communication center of the cell. 
 
 D. the cytosol plus cell organelles. 
 
 E. all cell organelles combined. 



Answer Key: D
Feedback: Good job!
Question 7 of 20 5.0/ 5.0 Points

A red blood cell placed in a hypotonic solution 
 A. loses water. 
 
 B. gains water. 
 
 C. shrinks. 
 
 D. neither gains nor loses water. 
 
 E. will not change shape. 



Answer Key: B
Feedback: Good job!
 
Part 2 of 3 -  15.0/ 35.0 Points



Question 8 of 20 0.0/ 5.0 Points

Pseudostratified epithelium is never ciliated.
 
  True
 False
 



Answer Key: False
Feedback: Please review Chapter 4.
Question 9 of 20 5.0/ 5.0 Points

Goblet cells are found in which of the following tissues? 
 A. nervous tissue 
 
 B. columnar epithelium 
 
 C. cuboidal epithelium 
 
 D. connective tissue 
 
 E. none of the above 



Answer Key: B
Feedback: Good job!
Question 10 of 20 0.0/ 5.0 Points

Squamous epithelium has cube-shaped cells.
 
  True
 False
 



Answer Key: False
Feedback: Please review Chapter 4.
Question 11 of 20 5.0/ 5.0 Points

The tissue lining body cavities is 
 A. epithelial tissue. 
 
 B. skeletal tissue. 
 
 C. nervous tissue. 
 
 D. connective tissue. 
 
 E. muscle tissue. 



Answer Key: A
Feedback: Good job!
Question 12 of 20 5.0/ 5.0 Points

Which of the following tissues is always avascular? 
 A. muscle tissue 
 
 B. connective tissue 
 
 C. nervous tissue 
 
 D. epithelial tissue 
 
 E. skeletal tissue 



Answer Key: D
Feedback: Good job!
Question 13 of 20 0.0/ 5.0 Points

Which of the following tissues is often ciliated? 
 A. connective tissue 
 
 B. cartilage 
 
 C. squamous epithelium 
 
 D. transitional epithelium 
 
 E. columnar epithelium 



Answer Key: E
Feedback: Please review Chapter 4.
Question 14 of 20 0.0/ 5.0 Points

Body cavities are lined with connective tissue.
 
  True
 False
 



Answer Key: False
Feedback: Please review Chapter 4.
 
Part 3 of 3 -  20.0/ 30.0 Points



Question 15 of 20 5.0/ 5.0 Points

The stratum spinosum of the skin has a high mitotic activity.
 
  True
 False
 



Answer Key: False
Feedback: Good job!
Question 16 of 20 0.0/ 5.0 Points

The layer of the epidermis only found in the thick skin of areas such as the fingertips, palms and soles is the 
 A. stratum granulosum 
 
 B. stratum basale 
 
 C. stratum lucidum 
 
 D. stratum corneum 
 
 E. stratum spinosum 



Answer Key: C
Feedback: Please review Chapter 5.
Question 17 of 20 5.0/ 5.0 Points

Cells of the skin that are active in the immune process are 
 A. Langerhans cells 
 
 B. Merkel cells 
 
 C. keratinocytes 
 
 D. melanocytes 
 
 E. adipocytes 



Answer Key: A
Feedback: Good job!
Question 18 of 20 5.0/ 5.0 Points

The skin belongs to the 
 A. muscular system 
 
 B. integumentary system 
 
 C. skeletal system 
 
 D. circulatory system 
 
 E. nervous system 



Answer Key: B
Feedback: Good job!
Question 19 of 20 0.0/ 5.0 Points

The outermost portion of the skin is the 
 A. hypodermis 
 
 B. epidermis 
 
 C. subcutaneous layer 
 
 D. basement membrane 
 
 E. dermis 



Answer Key: B
Feedback: Please review Chapter 5.
Question 20 of 20 5.0/ 5.0 Points

Increased secretion of androgens at puberty stimulates typical body hair growth patterns in both adolescent males and females.
 
  True
 False
 



Answer Key: True
Feedback: Good job!
 
hope this help. helping hands of everybody
Nomad
wrote...
A year ago
a type of epithelial tissue containing cells that can change shapes as tissue stretches is called
a. simple columnar epithelium
b. pseudostratified epithelium
c. transitional epithelium
d. stratified cuboidal epithelium
e. squamous epithelium
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A year ago
If you're looking for exercise 3 help, this site helped me Smile
If you are reading this, you are awesome, and I wish you a happy and prosperous day!
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