Specialised cells, tissues, organs and systemsIB MYP Sciences: Flashcards

What these 13 flashcards ask

What are the levels of organisation from smallest to largest?
What is a tissue?
What is an organ?
What is an organ system?
How is a red blood cell suited to carrying oxygen?
How is a sperm cell adapted to its function?
How is an egg cell adapted to its function?
How is a nerve cell adapted to its function?
How is a muscle cell adapted to its function?
How is a root hair cell adapted to its function?
How is a palisade cell adapted to its function?
Why is the stomach an organ?
Give an example of an organ system.

Exam questions on Specialised cells, tissues, organs and systems

A doctor in Riyadh explains to a class how the human body is organised, using the stomach as an example. The stomach wall contains muscle tissue that churns food, glandular tissue that makes digestive juices, and a lining of protective cells. The stomach is part of the digestive system.
Explain why the stomach is called an organ rather than a tissue.2 marks
A student is comparing specialised cells in humans and plants, including red blood cells, sperm cells and the root hair cells of a seedling.
Explain how the structure of a red blood cell makes it suited to carrying oxygen.2 marks
Biologists in Brazil study the structure of a leaf. The leaf has a protective layer of cells on its surface, palisade cells just below the upper surface where most photosynthesis takes place, and veins that carry water and sugars through the leaf.
Describe how a palisade cell is adapted for photosynthesis.3 marks

Written by the Exaim team, led by Shaun Daswani (Head of Upper Secondary, Improve ME Institute; MSc Financial Mathematics, Imperial College London; BSc, UCL) and Jason Daswani (operational lead, Improve ME Institute; LSE).