Biology 5090/22 — October/November 2011
Cambridge O-Level · Theory · worked solutions for every part, with the mark scheme
Topics Respiration · Cell Structure and Organisation · Movement Into and Out of Cells · Inheritance · Cell Division and Reproduction · Coordination and Control · +8 more
A student was asked to make a model of a plant cell. She took a length of tubing made from a substance that allows only water molecules to pass through and enclosed it in a flexible permeable membrane as shown in Fig. 1.1.
Name the structures found in a plant mesophyll cell that are best represented by the following items used in her model:
the marble ______
the beads ______
the tubing ______
State a structure found in a plant cell that is not represented in the student’s model.
______
The student then placed her model into a concentrated sugar solution for half an hour.
State and explain the similarities between what might happen to her model during that time and what would happen to a plant cell placed in the same solution.
The rest of this paper
8 more questions- Q2Inheritance · Cell Division and Reproduction10M
- Q3Coordination and Control10M
- Q4Sexual Reproduction in Plants9M
- Q5Human Nutrition11M
- Q6Plant Nutrition · Transport in Flowering Plants10M
- Q7Transport in Humans10M
- Q8Respiration · Human Gas Exchange · Disease and Immunity10M
- Q9Organisms and Their Environment · Respiration10M