20- Which organelle contains digestive enzymes and is involved in breaking down cellular waste and foreign substances? a) Ribosome b) Mitochondria c) Lysosome d) Golgi apparatus 21- What is the function of the vacuole in plant cells? a) Storage of genetic information b) Synthesis of proteins c) Regulation of water balance d) Production of energy 22- Which organelle is responsible for photosynthesis in plant cells? a) Nucleus b) Chloroplast c) Golgi apparatus d) Endoplasmic reticulum 23- Which of the following organelles is involved in the synthesis and modification of proteins? a) Lysosome b) Ribosome c) Vacuole d) Golgi apparatus 24- The genetic material of a cell is primarily located in the: a) Nucleus b) Mitochondria c) Ribosome d) Endoplasmic reticulum

Q: Which of the following applies the theory that cells are the basic unit of structure and functioning…

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Q: You are told that the cells on a microscope slide are plant, animal, or bacterial. You look at them…

A: Cell  Cell is the basic functional unite of any organism.

Q: Telophase in Mitosis a ) Chromosomes begin to uncoil into chromatin. b) Nucleolus and nuclear…

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Q: ndior re1ate to prokarvot

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A: The following statement is correct.

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Q: In comparing bacteria, archaea, and eukaryotes, which statement below among A -D is false?

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Q: Which type of cytoskeletal element is characterized as a hollow, rigid cylindrical tube with walls…

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Q: Describe some characteristics and differences between prokaryotic and eukaryotic cells.

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Q: The newly separated chromosomes are surrounded by the nuclear membrane during a)  prophase. b)…

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Q: Which of the following BEST represents the function of DNA in a cell?

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Q: 1) A group of unspecialized embryonic cells is transplanted from a leg bud to a wing bud in a chick…

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Q: A sclerocyte is : a) a stem cell b) a cnidarian cell c) a porifera cell d) a polychaeta cell

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Microscopic examination

The analysis of minute organisms, cellular organization of any biological structure, and composition of body fluids with the help of a microscope is known as microscopic examination. The magnification of specimens or samples under study helps in attaining a clearer picture of it.

Gram Staining

Named after Hans Christian Gram, a Danish bacteriologist, Gram stain is one of the most powerful staining techniques within microbiology. This technique was introduced in 1882 to identify pneumonia-causing organisms. The Gram staining technique uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.