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Biology Notes
Biology Notes 
 
Structure of a cell membrane -CORRECT ANSWER- Bilayer of phospholipids with embedded and attached proteins- fluid mosaic 
 
Fluid mosaic -CORRECT ANSWER- A description of membrane structure, depicting a cellular membrane as a mosaic of diverse protein molecules embedded in a fluid bilayer made of phospholipid molecules. 
 
Aquaporin -CORRECT ANSWER- Water transport channels that allow for very rapid diffusion of water through a cell membrane. Single allows up to 3 billion water ...
- Exam (elaborations)
- • 4 pages •
Biology Notes 
 
Structure of a cell membrane -CORRECT ANSWER- Bilayer of phospholipids with embedded and attached proteins- fluid mosaic 
 
Fluid mosaic -CORRECT ANSWER- A description of membrane structure, depicting a cellular membrane as a mosaic of diverse protein molecules embedded in a fluid bilayer made of phospholipid molecules. 
 
Aquaporin -CORRECT ANSWER- Water transport channels that allow for very rapid diffusion of water through a cell membrane. Single allows up to 3 billion water ...
AQA GCSE Biology Paper 2 2023
What is homeostasis? -CORRECT ANSWER- The maintenance of a constant internal environment. 
 
What is a stimulus? -CORRECT ANSWER- A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. 
 
What do the receptors do? -CORRECT ANSWER- Detect the stimulus or change in environment. 
 
What happens after the receptors? -CORRECT ANSWER- Receptors send messages to the CNS via the sensory neurone. 
 
What makes up the central nervous system...
- Exam (elaborations)
- • 26 pages •
What is homeostasis? -CORRECT ANSWER- The maintenance of a constant internal environment. 
 
What is a stimulus? -CORRECT ANSWER- A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. 
 
What do the receptors do? -CORRECT ANSWER- Detect the stimulus or change in environment. 
 
What happens after the receptors? -CORRECT ANSWER- Receptors send messages to the CNS via the sensory neurone. 
 
What makes up the central nervous system...
Basic Dysrhythmia-Relias Questions and Answers
Basic Dysrhythmia-Relias Questions and Answers 
 
normal sinus rhythm - CORRECT ANSWER-heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute 
 
Sinus Arrhythmia - CORRECT ANSWER-Appearance is ALMOST NORMAL: 
Respiratory - Circulatory interaction 
Rate INCREASES with INSPIRATION (IN=IN) 
 
Sinus Bradycardia - CORRECT ANSWER-<60 
normal sinus rhythm 
 
Sinus Tachycardia - CORRECT ANSWER->100 (100-150) 
normal sinus rhythm 
 
Premature A...
- Exam (elaborations)
- • 3 pages •
Basic Dysrhythmia-Relias Questions and Answers 
 
normal sinus rhythm - CORRECT ANSWER-heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute 
 
Sinus Arrhythmia - CORRECT ANSWER-Appearance is ALMOST NORMAL: 
Respiratory - Circulatory interaction 
Rate INCREASES with INSPIRATION (IN=IN) 
 
Sinus Bradycardia - CORRECT ANSWER-<60 
normal sinus rhythm 
 
Sinus Tachycardia - CORRECT ANSWER->100 (100-150) 
normal sinus rhythm 
 
Premature A...
Basic Dysrhythmia-Relias Questions and Answers
Basic Dysrhythmia-Relias Questions and Answers 
 
normal sinus rhythm - CORRECT ANSWER-heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute 
 
Sinus Arrhythmia - CORRECT ANSWER-Appearance is ALMOST NORMAL: 
Respiratory - Circulatory interaction 
Rate INCREASES with INSPIRATION (IN=IN) 
 
Sinus Bradycardia - CORRECT ANSWER-<60 
normal sinus rhythm 
 
Sinus Tachycardia - CORRECT ANSWER->100 (100-150) 
normal sinus rhythm 
 
Premature A...
- Exam (elaborations)
- • 3 pages •
Basic Dysrhythmia-Relias Questions and Answers 
 
normal sinus rhythm - CORRECT ANSWER-heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute 
 
Sinus Arrhythmia - CORRECT ANSWER-Appearance is ALMOST NORMAL: 
Respiratory - Circulatory interaction 
Rate INCREASES with INSPIRATION (IN=IN) 
 
Sinus Bradycardia - CORRECT ANSWER-<60 
normal sinus rhythm 
 
Sinus Tachycardia - CORRECT ANSWER->100 (100-150) 
normal sinus rhythm 
 
Premature A...