CCEA A-Level Health and Social Care 0003
Promoting Quality Care
Communication in Health, Social Care and Early Years Settings
Health and Well-Being
Safeguarding Children
Adult Service Users
Holistic Therapies
Understanding the Physiology of Health and Illness
Applied Research
Body Systems and Physiological Disorders
Providing Services
Public Health and Health Promotion
Supporting the Family
Understanding Human Behaviour
Human Nutrition and Health
Understanding the Physiology of Health and Illness
The animal cell and its organelles
- 3 things to know
- AS 7
Overview
Function of the cell membrane, structure of the cell membrane and job of a ribosome.
What you need to know
Answer each one before you reveal it.
Describe the structure of the cell membrane.
What does the nucleus do?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is the function of the cell membrane?
Model answer
The cell membrane encloses the cell and controls which substances enter and leave it.
- 2
Describe the structure of the cell membrane.
Model answer
The cell membrane is a double layer of phospholipid molecules with proteins embedded in it, an arrangement described as a fluid mosaic.
- 3
What does the nucleus do?
Model answer
The nucleus holds the cell's DNA and controls the cell's activities, including protein synthesis and cell division.
- 4
What is the nucleolus and what is it for?
Model answer
The nucleolus is a dense region inside the nucleus that makes ribosomes.
- 5
Which organelle releases most of a cell's energy, and how?
Model answer
Mitochondria release most of a cell's energy by aerobic respiration, transferring it to ATP.
- 6
Why do muscle cells contain large numbers of mitochondria?
Model answer
Muscle cells contract repeatedly and need a great deal of ATP, so they carry large numbers of mitochondria to supply it.
Other ways to work this
The same content, four other ways.
What is inside Levo
Six ways to work the same material.
Every question in Understanding the Physiology of Health and Illness, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
Or £46 a year, about £3.83 a month. Cancel anytime.