This document provides a comprehensive overview of cell biology, focusing on the fundamental unit of life: the cell. It covers the essential components and functions of cells, as well as the differences between prokaryotic and eukaryotic cells.
COMPLETE TEST BANK FOR Molecular Biology of the Cell (Seventh Edition) 7th Edition Kindle Edition by Bruce Alberts , Rebecca Heald Alexander Johnson || LATEST EDITION {2024 -2025}
TESTBANK FOR MOLECULAR BIOLOGY OF THE CELL 7TH EDITION/COMPLETE GUIDE 2024-2025
Samenvatting H2 en H3 Molecular Biology of the Cell (Seventh Edition) - Molecular Biology of the Cell 1 (WBFA006-04)
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Cells To Systems - Cell Types
Cell Types
What Is Cell Biology?
Cell Biology - The study of cells, including physiology, organelles, interactions with the environment, life, division
and death. Cells can be studied using a microscope
Cell:
Cell - The basic membrane-bound unit that contains the fundamental molecules of life and where all living things
are composed
Composed of 70% of water and 30% of other molecules e.g. proteins, RNA, DNA, lipids, sugars
Universal Features:
Requires genetic information
Requires free energy to live and replicate
Surrounded by a plasma membrane
All cells have a DNA, where hereditary information is stored
Transient - Temporary/Short time
Contains RNA for transient information carrier
Contains proteins (functions can be structural, different enzymes and transport)
Central dogma of molecular biology where information flows 1 direction (DNA > RNA > protein)
Functions Of Plasma Membrane:
It is a selective barrier
It concentrates desirable materials inside e.g. nutrients
Excludes undesirable materials e.g. waste products
Templated Replication:
1. DNA consists of 2 complementary strands (this means that 1 of
them will always be used as a template to create a new strand)
2. The new strand will serve as a template to synthesise RNA
3. RNA will then be a template to synthesise proteins
2 Types Of Cells:
1. Prokaryotes
2. Eukaryotes
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