Basics
The Cytoplasm
The cytoplasm comprises the contents of a cell between the plasma membrane and the nuclear envelope (a structure…
July 12, 2021 · Rajil TLBasics
Basics
The Plasma Membrane
Like prokaryotes, eukaryotic cells have a plasma membrane (Figure 3.9) made up of a phospholipid bilayer with embedded proteins that…
July 12, 2021 · Rajil TLBasics
Eukaryotic Cells
At this point, it should be clear that eukaryotic cells have a more complex structure than do prokaryotic…
July 12, 2021 · Rajil TLBasics
Comparing Prokaryotic and Eukaryotic Cells
Cells fall into one of two broad categories: prokaryotic and eukaryotic. The predominantly single-celled organisms of the domains…
July 12, 2021 · Rajil TLBasics
Microscopy
Cells vary in size. With few exceptions, individual cells are too small to be seen with the naked…
July 12, 2021 · Rajil TLBasics
Introduction to Cell Structure and Function
Figure 3.1 (a) Nasal sinus cells (viewed with a light microscope), (b) onion cells (viewed with a light…
July 12, 2021 · Rajil TLBasics
DNA Double-Helical Structure
DNA has a double-helical structure. It is composed of two strands, or polymers, of nucleotides. The strands are…
July 12, 2021 · Rajil TLBasics
Nucleic Acids
Nucleic acids are key macromolecules in the continuity of life. They carry the genetic blueprint of a cell and…
July 12, 2021 · Rajil TL
Basics
Proteins, Hormones & Amino acids
Proteins Protiens are one of the most abundant organic molecules in living systems and have the most diverse…
July 12, 2021 · Rajil TLBasics
Lipids
Lipids include a diverse group of compounds that are united by a common feature. Lipids are hydrophobic (“water-fearing”), or…
July 12, 2021 · Rajil TL