Science | Senioritis

Mohamed Abbas
June 20, 2023
Dermatology

Understanding Wheals: Causes, Symptoms, and Treatments for Allergic Reactions

wheal elevated irregular-shaped area of cutaneous edema; solid, transient; variable diameter; examples are insect bites, urticaria, allergic reaction, lupus erythematosus A wheal is a raised, red, itchy...

Mohamed Abbas
June 20, 2023
Dermatology

Understanding Nodules: Causes, Types, and Treatment Approaches in Dermatology and Pulmonology

nodule elevated, firm, circumscribed lesion; deeper in dermis than a papule; 1 to 2 cm in diameter; examples are dermatofibroma, erythema nodosum, lipomas, melanoma, hemangioma, neurofibroma A...

Mohamed Abbas
June 20, 2023
Dermatology

An In-Depth Guide to Tumors: Types, Symptoms, and Treatment Options

tumor elevated and solid lesion; may or may not be clearly demarcated; deeper in dermis; greater than 2 cm in diameter; examples are neoplasms, lipoma, hemangioma A...

Mohamed Abbas
June 20, 2023
Dermatology

Understanding the Vital Role of Vesicles in Eukaryotic Cells: Functions and Significance

vesicle elevated, circumscribed, superficial, not into dermis; filled with serous fluid; less than 1 cm in diameter; examples are varicella (chickenpox), herpes zoster (shingles), impetigo, acute eczema...

Mohamed Abbas
June 20, 2023
Dermatology

Pustules: Causes, Symptoms, and Treatment Methods for Skin Lesions

pustule elevated, superficial lesion; similar to a vesicle but filled with purulent fluid; examples are impetigo, acne, folliculitis, herpes simplex A pustule is a type of skin...

Mohamed Abbas
June 20, 2023
Genetics

The Backbone of DNA: Understanding the Structure and Significance of Sugar-Phosphate Molecules and Nitrogenous Bases

Backbone of DNA sugar and phosphate The backbone of DNA is made up of sugar and phosphate molecules, which alternate to form a long chain. The sugar...

Mohamed Abbas
June 20, 2023
Genetics

Understanding Complementary Base Pairing: The Key to DNA’s Genetic Code

Adenine pairs with what? Thymine Adenine, one of the four nitrogenous bases found in DNA, pairs with thymine (T) through hydrogen bonds, forming a base pair. This...

Mohamed Abbas
June 20, 2023
Genetics

Understanding the Significance of Cytosine-Guanine Base Pairing in DNA and RNA

Cytosine pairs with Guanine Cytosine (C) generally pairs with guanine (G) in DNA and RNA double strands. The hydrogen bonding between C and G forms three hydrogen...