Chapter 1 Cell.docx

Due to COVID-19 pandemic, wearing of face masks is now compulsory. How does a facemask prevent the entry of corona virus? 1. The role of the cell organelle pointed out in Figure 1.1 is C. nucleus-carries genetic material. D. lysosome-digests food. 2\. A cell is best defined as the D. structura...

Due to COVID-19 pandemic, wearing of face masks is now compulsory. How does a facemask prevent the entry of corona virus? 1. The role of the cell organelle pointed out in Figure 1.1 is C. nucleus-carries genetic material. D. lysosome-digests food. 2\. A cell is best defined as the D. structural and functional unit of life. 3\. Every cell organelle has its own function. The organelle which prepares food and can be compared to a kitchen is A mitochondria. B chloroplast. C nucleus. D vacuole. 4\. A cell consists of organelles that perform various functions. Identify the cell organelle responsible for transferring hereditary traits. +-----------------------------------------------------------------------+ | A vacuole | | | | B nucleus | | | | C ribosome | | | | D mitochondria | | | | 5\. Proteins are responsible for nearly every task of cellular life. | | The cell organelle that | | | | synthesizes protein is | | | | A ribosome. | | | | B chloroplast. | | | | C golgi bodies. | | | | D mitochondrion. | | | | 6\. Which of the following sequence shows the correct levels of | | biological organisation? | | | | D. Neuron →Digestive tract →Muscle →Kidney | +-----------------------------------------------------------------------+ 7\. Protoplasm includes cytoplasm, cell organelles, and vacuoles. (True or False) 8\. Complete the table given below: (2) -- -- **Name of Cell Organelle** **Function** ---------------------------------------- ----------------------------------------------------------- Centrosome.............................................................................. Provides shapes and turgidity Lysosome.........................................................................\...\...\...\.... Controls the cellular activities and remove the full stop -- -- -- -- 9\. Draw a plant cell and label any **TWO** cell organelles that are found **ONLY** in a plant cell. (2) 10\. Omicron virus is a multicellular organism. (\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_) 11\. A student mounted a permanent slide under a microscope and observed the following cell organelles. i. What evidence in the diagram proves that it is an animal cell? (1) ii. Compare the following cell organelles to a school.(2) Cell membrane --------------- -- Nucleus 11\. The diagram below illustrates the observation of a tomato peel under a microscope. i. Explain **ONE** importance of part X. (1) ii. How is part X different from mitochondria? (1) 13\. Observe the tissues, A and B given below and answer the questions that follow. A B i. Identify tissues A and B. (1) ii. Mention **ONE** function of each tissue. (1)