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Test: Cell Structure - Grade 10 MCQ


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10 Questions MCQ Test - Test: Cell Structure

Test: Cell Structure for Grade 10 2024 is part of Grade 10 preparation. The Test: Cell Structure questions and answers have been prepared according to the Grade 10 exam syllabus.The Test: Cell Structure MCQs are made for Grade 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Cell Structure below.
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Test: Cell Structure - Question 1

Which of the following is a feature of eukaryotic cells not present in prokaryotic cells?

Detailed Solution for Test: Cell Structure - Question 1

Mitochondria are present in eukaryotic cells but not in prokaryotic cells. These are absent in prokaryotic cells. Mitochondria are thought to be the result of prokaryotic cells entering other cells way back in evolutionary history.

Test: Cell Structure - Question 2

Which of the following is an adaptation to the transport of substances in the xylem?

Detailed Solution for Test: Cell Structure - Question 2

Xylem vessels are adapted to transport by having no end walls, and their side walls are thickened. The thickening is of a chemical called lignin. Xylem vessels thickened with lignin are called wood.

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Test: Cell Structure - Question 3

Which of the following is an advantage of the transmission electron microscope compared with the light microscope?

Detailed Solution for Test: Cell Structure - Question 3

Higher magnifications are possible with the transmission electron microscope owing to the shorter wavelengths of the electron compared with visible light.

Test: Cell Structure - Question 4

How have microscopes developed over the years?

Detailed Solution for Test: Cell Structure - Question 4

Microscopes have developed over the years to give increased magnification and increased resolution. These have increased markedly since the invention of the electron microscope.

Test: Cell Structure - Question 5

A type of white blood cell called a macrophage measures 5 x 10-5 m. What does it measure in micrometres?

Detailed Solution for Test: Cell Structure - Question 5

A macrophage measures 50 μm. One micrometre equals 10-6 m, so a macrophage measuring 5 x 10-5 m would be fifty times this.

Test: Cell Structure - Question 6

How is a muscle adapted to its function

Detailed Solution for Test: Cell Structure - Question 6

Muscle is adapted to bringing about movement as it contains protein filaments that slide over each other and cause contraction. In skeletal muscle, these filaments create the bands that we see when examining muscle with the light microscope.

Test: Cell Structure - Question 7

Which of the following is the correct sequence for setting up a microscope on high power?

Detailed Solution for Test: Cell Structure - Question 7

A microscope should be focused on low power using the coarse adjustment, the high power objective moved in line with the specimen, and then the image refocused with the fine adjustment. If the final step is not successful, return to low power and refocus.

Test: Cell Structure - Question 8

If a cell called a megakaryocyte measures 1 x 10-4 m, and a neutrophil measures 1 x 10-5 m, what is the difference in order of magnitude?

Detailed Solution for Test: Cell Structure - Question 8

The difference in the order of magnitude between a megakaryocyte and a neutrophil is one. Orders of magnitude are to the base 10, so the calculation is 5-4.

Test: Cell Structure - Question 9

If the actual size of a cell is 100 μm, and 10 cm in a book, what is the magnification of the image in the book?

Detailed Solution for Test: Cell Structure - Question 9

The magnification of the book image is 1000 times the actual size. The calculation is 100 000 μm ÷ 100 μm = 1000.

Test: Cell Structure - Question 10

What is the function of a ribosome?

Detailed Solution for Test: Cell Structure - Question 10

The function of a ribosome is in protein synthesis.

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