Biology: Life on Earth
Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 4, Problem 3FTB
Summary Introduction

To review:

The given blank space in the statement, “After each description, fill in the appropriate term: “workbenches” of the cell: ______; comes in rough and smooth forms: ______; site of ribosomes production: _______; a stack of flattened membranous sacs: _______; outermost layer of plant cells: ______; ferries blueprints for protein production from the nucleus to the cytoplasm: ________.”

Introduction:

A cell is composed of various organelles that play a variety of roles in order to maintain the overall functions of the cell. These organelles not only play their role but also regulate the functions of other organelles, that is, they are constantly interacting with each other in order to function.

For example, protein synthesis is initiated by transcription of deoxy ribonucleic acid (DNA) into messenger-ribonucleic acid (mRNA) inside the cell that is exported to the cytoplasm; ribosome gets attached to mRNA and starts the process of translation. This peptide reaches endoplasmic reticulum for folding and modification and then transported to Golgi apparatus where it is sorted, packaged, and transported further.

This way organelles interact and function among themselves.

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Which statement about the cytoskeleton is incorrect? Microtubules are hollow tubes of protein that provide structural support. Plant cells lack a cytoskeleton because they have a rigid cell wall. Intermediate filaments are more permanent structures in cells compared to microfilaments and microtubules. Microfilaments are chains of proteins that resist stretching. Components of the cytoskeleton are often involved with movement of organelles within the cytoplasm.
Label and show the loeatons of the following organelles on the dagram of a plant cell below: Cell wall, Plasma (cell) membrane, cytoplasm, mitochondria, chloroplast, nucleus, vacuole, endoplasmic reticulum, ribosomes, nuclear membrane, nucleolus, golgi apparatus 0 0 0 0
Match each of the following cellular structures with the one function that best describes it. Site where the cell first makes contact with a virus Composed of microtubules, intermediate filaments, and microfilaments Site of cellular respiration, which generates ATP Organelle that "reads" RNA to create a protein from amino acids Site where proteins are modified into glycoproteins Site where proteins complete their modifications and are transported to other locations, inside or outside the cell General membrane-bound transport structure A vesicle involved in the process of endocytosis that becomes increasingly acidic Contains enzymes for intracellular digestion of malfunctioning organelles or ingested pathogens Location of genetic material 1. ribosome 2. nucleus 3. lysosome 4. 5. 6. Golgi complex 8. rough ER mitochondrion 7. vesicle cytoskeleton 9. plasma membrane 10. endosome
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