Portage Learning; Essential Biology II W/Lab BIOL 102/BIOD 102 Module 4 Exam All Versions Latest Update/ Verified

Portage Learning; Essential Biology II W/Lab BIOL 102/BIOD 102
Module 4 Exam All Versions Latest Update/ Verified

Institution: Portage Learning
Course Code: BIOL 102/BIOD 102
Course Title: Essential Biology II W/Lab
Exam: Module 4
Assessment Type: Examination
Edition: Updated Version


Student Name: _______________________________
Student Id: _________________________________
Instructor: _________________________________


Instructions:
Answer All Questions.
Choose The Correct Answer




TABLE OF CONTENT

Version Exam Module 4.1 ------------------------------------------------------------------------------------------ 2
Version Exam Module 4.2 ---------------------------------------------------------------------------------------- 21


QUESTIONS TYPE:
➢ Multiple Choice:
➢ True Or False:
➢ Explain Or Describe
➢ Fill In The Blank


All The Best!!

,Version Exam Module 4.1

Question 1. (Multiple Choice)


What Is A Consequence Of Blood Calcium Levels Being Dangerously Elevated?


A. Uncontrolled Muscle Contraction
B. Crystallization In Body Tissues
C. Vomiting
D. High Blood Pressure


When Blood Calcium Is Excessively High (Hypercalcemia), Calcium Can Deposit In
Soft Tissues, Leading To Crystallization In Body Tissues Such As Kidneys And Blood
Vessels.




Question 2. (Matching)


Match Each Term With Its Appropriate Role In The Calcium Homeostatic Pathway.


A. Setpoint
B. Stimulus
C. Sensor
D. Response


10 Mg/Ml
Decrease In Blood Calcium
Calcium Sensing Receptor
PTH Increases Absorption

,Correct Answers:


A→1
B→2
C→3
D→4


The Setpoint Is The Normal Blood Calcium Level (10 Mg/Ml).
The Stimulus Is A Decrease In Blood Calcium.
The Sensor Is The Calcium-Sensing Receptor In The Parathyroid Gland.
The Response Is PTH Increasing Calcium Absorption To Restore Levels.




Question 3. (Short Answer)


Describe The Mechanisms Of Calcitonin And How Blood Calcium Is Increased:


ANS.
Calcitonin Is A Peptide Hormone Released By Parafollicular (C) Cells Of The Thyroid
Gland When Blood Calcium Levels Are Too High. It Binds To Receptors On Osteoclasts
In Bone To Inhibit Bone Resorption (Breakdown). It Also Binds To Receptors In The
Kidney Tubules To Increase Calcium Excretion And Reduce Calcium Reabsorption.
Blood Calcium Is Increased Primarily By Parathyroid Hormone (PTH), Which Stimulates
Osteoclast Activity, Increases Calcium Reabsorption In The Kidneys, And Promotes
Activation Of Vitamin D To Increase Intestinal Calcium Absorption.




Question 4. (Multiple Choice)
Which Hormone Is Primarily Responsible For Increasing Blood Calcium Levels?

, A. Insulin
B. Calcitonin
C. Parathyroid Hormone (PTH)
D. Thyroxine


Parathyroid Hormone (PTH) Raises Blood Calcium By Stimulating Bone Resorption,
Increasing Kidney Reabsorption Of Calcium, And Promoting Vitamin D Activation.




Question 5. (Multiple Choice)


Islets Of Langerhans Are Composed Of Which Cell Types?


A. Acinar And Duct Cells
B. Alpha And Beta Cells
C. Osteoclasts And Osteoblasts
D. Parafollicular And Follicular Cells


The Islets Of Langerhans Contain Alpha Cells (Secrete Glucagon) And Beta Cells
(Secrete Insulin).




Question 6. (True Or False)


Insulin Is The Main Source Of Energy For Almost All Body Tissues.


A. True
B. False