Concept explainers
To discuss:
The structures and functions of lysosomes and peroxisomes and the similarities and differences between them.
Introduction:
Cells are regarded as the simplest unit (structural and functional) of life. Cellular membrane, nucleus, and cytoplasm are the three major components of a cell. Cellular membrane, which surrounds the entire cell, is composed of phospholipids and proteins. The nucleus is bound by a nuclear membrane, and it possesses the genetic material of the cell. Cytoplasm consists of organelles, cytoskeleton (filaments and tubules), and inclusion bodies. Protoplasm denotes all living material that are present in the cell enclosed by the cellular membrane (inside and outside the nucleus). Organelles are structures present within a cell and are specialized to perform a particular metabolic task essential for the survival of the cell. Organelles that are enclosed by a membrane are called as membranous organelles. For example, mitochondria and nucleus. Ribosomes and centrioles are organelles that are not bound by a membrane.
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Anatomy & Physiology: The Unity of Form and Function
- How inclusions differ from organelles; the origins and types of inclusionsarrow_forwardWhy cytoplasmic membranes are barriers but also permeablearrow_forwardBriefly explain why each of the following statements is false, or reword it to make it true.4. The Golgi complex makes all of a cell’s lysosomes and peroxisomes.arrow_forward
- The journey of a c f t r protein , folding and membrane insertion in the endoplasmic reticulumarrow_forwardHow mitosis can be either stimulated orinhibited according to the need for tissuemaintenance or growtharrow_forwardThe journey of the c f t r protein the degradation in the lysosomearrow_forward
- How the polymerization of tubulin subunits into microtubules occurs with an increase in entropy.arrow_forwardBriefly explain why each of the following statements is false, or reword it to make it true.6. The plasma membrane consists primarily of protein molecules.arrow_forwardBriefly explain why each of the following statements is false, or reword it to make it true.10. All of a cell’s ribosomes are found on the nuclear envelope and the rough endoplasmic reticulum.arrow_forward
- Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning