Search results for: 'Plant Cell Animation'

Watch Later 1:22

Major Elements in Biological Molecules: Carbohydrates

By: HWC, Views: 6194

Carbohydrates include simple sugars (monosaccharides) as well as large polymers (polysaccharides). Glucose is a hexose, a sugar composed of six carbon atoms, usually found in ring form. A starch macromolecule is a polysaccharide composed of thousands of glucose units. Glucose molecules can be ...

Watch Later 1:34

Introduction to Sickle Cell Anemia

By: Administrator, Views: 10072

Sickle cell anemia (sickle cell disease) is a disorder of the blood caused by an inherited abnormal hemoglobin (the oxygen-carrying protein within the red blood cells). The abnormal hemoglobin causes distorted (sickled appearing under a microscope) red blood cells.

Watch Later 1:20

Carbohydrate digestion - mouth and stomach & pancreas and small intestine

By: HWC, Views: 6401

• Digestion of complex carbohydrates (starches and glycogen) involves: • Amylases produced by the salivary glands and pancreas. • Brush-border enzymes in small intestine. • In the mouth, amylase from the parotid and submandibular salivary glands begins carbohydrate digestion. �...

Watch Later 3:03

What Are Carbohydrates? Importance of Carbs & High Carb Food

By: HWC, Views: 6695

We hear a lot about carbohydrates in the news. Everybody seems to be on a low-carb diet. The news media often has stories on this diet fad, and companies are busy producing products with reduced carbohydrates. What's this fascination with carbohydrates? In a word: "Diet." The fact is that carb...

Watch Later 1:24

Endocytosis -Types and Phagocytosis

By: HWC, Views: 6673

Endocytosis is the process by which a substance is brought inside a cell without having to pass through the cell membrane. It is the opposite of endocytosis, the process by which substances exit the cell without having to pass through the cell membrane. Exocytosis – membrane-enclosed secret...

Watch Later 2:31

Double Stranded DNA Molecule Animation

By: HWC, Views: 4567

Double Stranded DNA Molecule Animation

Watch Later 2:52

Phases of mitosis

By: HWC, Views: 4614

Prophase is the first step in the mitotic process. During prophase, the chromosomes condense. The centrosomes begin to form a spindle and move into position on opposite sides of the cell. Sister chromatids are held together by a protein called cohesin at the centromere. Prometaphase is the sec...

Watch Later 3:46

B cells and antibodies

By: HWC, Views: 7459

What Are Antibodies? Antibodies, also known as immunoglobulins, are Y-shaped proteins that are produced by the immune system to help stop intruders from harming the body. When an intruder enters the body, the immune system springs into action. These invaders, which are called antigens, can be vi...

Watch Later 1:29

Mitosis step-by-step

By: HWC, Views: 4564

During interphase, the chromosomes will be duplicated in preparation for mitosis, which divides the chromosomes, and cytokinesis, which divides the cell's cytoplasm. In early prophase, the duplicated chromosomes begin to condense. Each chromosome consists of two sister chromatids joined at the...

Search Results