2. Organisation of the organism
A section of Biology, 0610
Listing 10 of 439 questions
The boxes on the left contain the functions of some plant cell structures. The boxes on the right contain the names of structures found in plant cells. Draw one straight line from each box on the left to a box on the right to link the plant cell function to the correct plant cell structure. Draw four lines. plant cell function plant cell structure controls cell activities controls movement of chemicals into and out of cells makes glucose prevents cell from bursting cell membrane cell wall chloroplast nucleus vacuole
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THEORY
2019
Paper 3, Variant 2
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Plant and animal cells contain many cell structures with important functions. Complete the sentences using the words or phrases from the list. Each word or phrase may be used once, more than once or not at all. chloroplast cytoplasm membrane microscope nucleus protein synthesis photosynthesis respiration test-tube vacuole wall Cells are very small. To magnify cells a piece of laboratory equipment called a is used. All cells have a cell that controls what goes into and out of the cell. The structure that contains the genetic information and controls all of a cell’s activities is called the . In a plant cell, the cell maintains the cell shape and the is full of a solution of sugars, called cell sap. Plant cells carry out the process of to release energy. Mitosis and meiosis are types of nuclear division. Table 3.1 shows some features of mitosis and meiosis. Place ticks (3) in the boxes to show which features occur in which type of nuclear division. Table 3.1 feature mitosis meiosis produces gametes produces genetically different cells produces genetically identical cells produces new cells during growth and repair to damaged tissues replaces cells used in asexual reproduction A human body cell has 46 chromosomes including a pair of sex chromosomes. There are two types of sex chromosome, X and Y, as shown in . X Y Complete Table 3.2 to show the correct letters of the sex chromosomes in a female and a male. Table 3.2 sex chromosomes female male
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THEORY
2019
Paper 3, Variant 3
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Questions Discovered
439