Search results
A membrane bound organelle found in the cytoplasm of plant cells. It contains a weak solution of sugars and salts called cell sap. The membrane surrounding plant cell vacuoles is called the tonoplast. They help to maintain pressure inside the cell and keep it rigid.
2.1 Cell Structure OCR ExamBuilder. 1(a). Plant and animal cells have different structural features. Name two features of plant cells that are not features of animal cells. Name one structure present in animal cells that is not present in plant cells. The cytoskeleton in cells consists of microtubules and microfilaments. [2]
- 6MB
- 83
Exam Questions. Figure 1.1. Figure 1.1 is a transmission electron micrograph (TEM) image of a chloroplast. Explain why this image was made using a transmission electron microscope rather than a light microscope.
Summary notes and past exam questions by topic for AQA Biology AS and A-Level Topic 2 - Cells.
1. Define the term resolution. 2. Copy and complete the table below. 3. What are the advantages of the electron microscope? 4. What are smallest cell structures that can be seen by the light microscope?
- 318KB
- 6
(a) Complete the diagram of the four gametes to show the independent assortment, or reassortment, of genetic material during meiosis. (2) (b) If the cell undergoes mitosis instead of meiosis, draw the two daughter cells which result to show the chromosomes in each. (2) (c) State the number of chromosomes in: (i) a normal human cell;
People also ask
Which organelle is found in the cytoplasm of plant cells?
How many chromosomes does Thalas aemia have?
Which means of cell division is most likely to be cytokinesis or mitosis?
What cytoskeleton consists of microtubules and microfilaments?
What is the structure of chloroplast?
Which part of the plasmodium life cycle took place in the red blood cell?
Dec 5, 2023 · Structural support is provided by the polysaccharide cellulose in plants, and peptidoglycan in most bacterial cells. Narrow threads of cytoplasm (surrounded by a cell membrane) called plasmodesmata connect the cytoplasm of neighbouring plant cells.
