Hydrophilic signals - Study guides, Class notes & Summaries
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LATEST Biology A level OCR 100% (400+ QUESTIONS WITH VERIFIED SOLUTIONS 2023/2024
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What is the MAIN role of membranes and what are the other roles? - ANSWER - 
COMPARTMENTALISATION 
-site of chemical reactions 
-cell signalling 
-cell adhesion 
How do cell membranes compartmentalise? - ANSWER Membranes are hydrophobic layers that 
separate different regions of substances dissolved in water. This hydrophobic layer acts as a barrier 
preventing the movement of hydrophilic molecules from one region to another. It keeps one 
compartment separate from another. 
What are the 3 examp...
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BIOD 101 Module 5 (EXAM), BIOD Module 5 Exam With Questions and Answers 100% Solved
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BIOD 101 Module 5 (EXAM), BIOD Module 
5 Exam With Questions and Answers 100% 
Solved 
Which of the following signaling types is used to transmit ligands to their target 
cells over long distances, using the circulatory system as a transport medium? 
1. Autocrine signaling 
2. Endocrine signaling 
3. Direct cell-to-cell signaling 
4. Paracrine signaling 
5. Synaptic signaling 
Endocrine signaling. 
Explain why a steroid hormone would require a carrier protein to transport it 
through the bloodst...
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INSTRUCTOR MANUAL FOR ADVANCED NUTRITION AND HUMAN METABOLISM 8TH EDITION SAREEN GROPPER, JACK SMITH, TIMOTHY CARR ALL CHAPTERS, 100% VERIFIED A+ GRADE
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INSTRUCTOR MANUAL FOR ADVANCED NUTRITION AND HUMAN METABOLISM 8TH EDITION SAREEN GROPPER, JACK SMITH, TIMOTHY CARR ALL CHAPTERS, 100% VERIFIED A+ GRADE-Purpose and Perspective of the Chapter 
This chapter introduces the basic functions of the human cell to serve as background as students proceed to learn about nutrition and metabolism within the human body. 
Chapter Objectives 
The following objectives are addressed in this chapter: 
1.1	Identify cellular components and their functions. 
1.2	Des...
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APHY 101 Ivy Tech Final Exam Questions and Answers 2024
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sodium and potassium - Action potential occur on nerve axons as ______________ gates open in response to electrical signals. 
 
long, tryglyceride - Adipose tissue function as ____ term ________ storage 
 
TRUE - All body's cell exhibit responsiveness to some extent. T or F 
 
Decay - All of the following are functional characteristics of living organisms except 
 
Axis - Allows the head to shake no: 
 
synovial - All freely moveable diarthrotic joints are _______joints 
 
Estrogen Testosterone...
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BIOS 1108 MODULE 3 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+
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1 
BIOS 1108 MODULE 3 EXAM | 
QUESTIONS & ANSWERS (VERIFIED) | 
LATEST UPDATE | GRADED A+ 
Cell Signaling Pathway 
Correct Answer: "RaceCAR" 
- Reception of signaling molecule (ligand) to specfiic receptor 
- protein-to-protein Communication (transduction); ex: receptor-to-enzyme, kinase-totarget 
-signal Amplification typically with second messengers (cAMP, etc) 
-sgnal response 
nuances: tissue/cell-type specific responses, signal crosstalk 
Direct Signaling 
Correct Answer: communicati...
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Bios 251 Exam 2 Review Weeks 3 & 4
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Week 3 – Cell Biology 
There are	3	major parts to a cell: 
 
1.	 	Cellular membrane 	 
2.	 	Nucleus 	 
3.	 	cytoplasm 	 
 
 
Be able to label the below picture: 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
THE PLASMA MEMBRANE 
 
The plasma membrane is made up of a _phospholipid_ bilayer. These have _phosphate_ heads and fatty acid tails. Heads are hydrophobic/hydrophilic (circle one) while the tails are hydrophobic/hydrophilic (circle one). 
 
 
Intermixed inside of the membrane are p...
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BIO 101 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
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BIO 101 EXAM QUESTIONS AND 
CORRECT DETAILED ANSWERS 
What makes the "head" of a phospholipid hydrophilic? 
A) The even distribution of electrons across the fatty acids makes 
the head polar. 
B) The uneven distribution of electrons across the fatty acids 
makes the head polar. 
C) The phosphate group carries a negative charge, making the 
head polar. 
D) The phosphate group carries a negative charge, making the 
head nonpolar - ANSWER C 
Which would most likely pass unaided through a pla...
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BIO 101 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
- Exam (elaborations) • 34 pages • 2023
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BIO 101 EXAM QUESTIONS AND 
CORRECT DETAILED ANSWERS 
What makes the "head" of a phospholipid hydrophilic? 
A) The even distribution of electrons across the fatty acids makes 
the head polar. 
B) The uneven distribution of electrons across the fatty acids 
makes the head polar. 
C) The phosphate group carries a negative charge, making the 
head polar. 
D) The phosphate group carries a negative charge, making the 
head nonpolar - ANSWER C 
Which would most likely pass unaided through a pla...
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APHY 101 Ivy Tech Final
- Exam (elaborations) • 9 pages • 2023
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sodium and potassium - Answer- Action potential occur on nerve axons as ______________ gates open in response to electrical signals. 
 
long, tryglyceride - Answer- Adipose tissue function as ____ term ________ storage 
 
TRUE - Answer- All body's cell exhibit responsiveness to some extent. T or F 
 
Decay - Answer- All of the following are functional characteristics of living organisms except 
 
Axis - Answer- Allows the head to shake no: 
 
synovial - Answer- All freely moveable diarthrotic j...
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TEST BANK NEUROSCIENCE Exploring the Brain (2015, WOLTERS KLUWER) MARK F. BEAR, BARRY W. CONNORS, MICHAEL A. PARADISO
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TEST BANK NEUROSCIENCE Exploring the Brain (2015, WOLTERS KLUWER) MARK F. BEAR, BARRY W. CONNORS, MICHAEL A. PARADISOWhy are a broad perspective and an interdisciplinary approach required for understanding the brain? Choose the correct option. A) Understanding the brain is a focused area in natural science with the brain serving as the common point of focus. 
B) Understanding the brain requires knowledge about many things, from the structure of the water molecule to the electrical and chemical p...
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