B1 - Cell structure and transport
Independent learning
Introduction
In this unit, we will learn about microscopes, the different types of cells, how to tell the difference between them and some adaptations that allow them to carry out specific jobs.
We will also learn about the transport of material into and out of cells by diffusion, osmosis, and active transport.
When studying the processes for transferring material, you also need to be able to explain the adaptations of exchange surfaces and link these to the processes of material transport.
Specification links:
Task 1: Know
Task 1a: Use look, cover, write check and quizlet to learn the answers to the core questions and the keywords for this topic.
Task 1b: Listen to the podcast for your set to get an overview of this topic:
Set 1
Set 2
Set 3
Learn
Task 2: Microscopes and magnification
Task 2b: Make notes that:
Draw and label a microscope. (Use slide 7 to help)
Name the two different types of microscopes.
Define resolution.
Compare electron microscopes and light microscopes.
Give the calculation for magnification, and rearrange for size of image and size of real object.
Task 2c: Complete and self mark the questions on magnification.
Task 3: Animal and plant cells
Task 3c: Make notes that:
Draw and label an animal and plant cell.
Name and define the organelles in an animal cell.
Name and define the organelles in a plant cell.
Give the organelles that are just in a plant cell.
Compare the structures and functions of animal and plant cells.
Key point check
Give the formula for calculating magnification
Magnification = image size / object size
Remember: the 2 sizes need to be in the same units!
Task 4: Microscopy required practical
Task 4b: Watch the videos.
Task 4c: Make notes that:
Plan a method to make an animal cell slide.
Plan a method to make a plant cell slide.
Describe how to calibrate a microscope and measure the size of the image.
Task 5: Eukaryotic and prokaryotic cells
Task 5c: Make notes that:
Define a prokaryotic cell.
Define an eukaryotic cell.
Draw and label a bacteria cell.
Describe the similarities and differences between the features found in a prokaryotic cell and eukaryotic plant and animal cells. (6marks)
Define orders of magnitude.
Task 5d: Complete and self mark the exam questions
Task 5e: Complete progress quiz 1
Key point check:
Name the three organelles found in plant cells but not in animal cells
Cell wall, chloroplasts, permanent vacuole
Task 6: Specialised animal and plant cells
Task 6c: Make notes that:
Define a specialised cell.
Name 3 specialised animal cells.
Name 4 specialised plant cells.
Describe the adaptations for the following animal cells; muscle cells, nerve cells, sperm cells.
Describe the adaptations for the following plant cells; root hair cell, photosynthetic cell, xylem, phloem.
Task 6d: Complete the exam questions
Task 7: Diffusion
Task 7c: Make notes that:
Define diffusion.
Draw and label a diagram to show diffusion.
Name 3 factors that affect the rate of diffusion.
Describe how these 3 factors affect the rate of diffusion.
Task 7d: Complete the exam questions
Task 8: Osmosis
Task 8c: Complete the exam questions
Task 8d: Complete Progress quiz 2
Task 9: Osmosis required practical
Task 9c: Make notes that:
Name the following variables for this experiment:
control
independent,
dependent.
Define hypotonic, hypertonic, isotonic.
Give the equation to calculate percentage change in mass.
Task 9d: Complete the exam questions
Key point check:
Define diffusion
"The net movement of substances down a concentration gradient from and area of high concentration to an area of low concentration"
Task 10: Active transport
Task 10c: Make notes that:
Define active transport.
Compare diffusion, active transport and osmosis.
Complete the venn diagram on slide 12.
Task 10d: Complete and then mark the exam questions
Key point check:
Define osmosis
"The diffusion of water from a dilute solution to a concentrated solution through a partially permeable membrane"
Task 11: Exchanging materials
Task 11c: Make notes that
Give three areas in the body where materials are exchanged.
Describe how the alveoli are adapted for diffusion.
Plan a method to calculate surface area to volume ratio.
Complete the handout
Task 12: Summary
Task 12a: Watch the video
Task 12b: Complete the seneca learning unit for your set.
Task 12c: Make your own version of the mind map to the right or single page revision summary of this topic.
Use the specification links to help you and add it to your revision folder