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Question | Answer |
what cell is formed by fusing a male and female gamete? | zygote |
what is the detailed internal structure of a cell called? | ultrastructure |
what term describes a plant cell that is full of water? | turgid |
what is the process of water loss from plant leaves? | transpiration |
Describe the function of vesicles | transport out/into cells |
An unidentified cell is found to contain mitochondria. Is it prokaryotic or eukaryotic? | eukaryotic |
How is magnification calculated? | image/actual size |
Name a common stain used in preparing slides | iodine etc |
Give three molecules, other than proteins and cholesterol, that are present in animal cell membranes. | phospholipids,glycolipids,glycoproteins |
What is cell signalling? | coordination and communication |
List three ways to increase the rate of diffusion | short distance, steep concentration gradient, higher temperature |
Describe what happens to a plant cell if it is placed in a solution with a higher water potential than the cell | water moves in by osmosis and cell becomes turgid |
During which stage in mitosis does the nuclear envelope break down? | prophase |
Name the type of cell division that produces the gametes. | meiosis |
Describe how a palisade cell is adapted for its role in photosynthesis? | tessellate, contain many chloroplasts, thin |
How do the surface area to volume rations of large and small organisms differ? | larger has a smaller SA:Vol |
Explain why the circulatory system of a fish is described as being closed | |
Which chamber of the heart receives blood from the lungs? | |
What prevents impulses from the atria travelling straight into the ventricles? | |
Name the structure that picks up impulses from the atria and passes them on to the ventricles | |
How many oxygen molecules can each haemoglobin molecule carry? | |
What effect does respiration have on a cells pO2? | |
Name the substance that thickens the walls of xylem vessels |