TEAS Science: Key Concepts

TEAS Science Key Topics

• Psoriasis is a skin condition that causes red, flaky, crusty patches of skin covered with silvery scales.
• The endocardium is the innermost layer of tissue that lines the chambers of the heart.
• Alveoli are tiny air sacs in the lungs that allow for gas exchange.
• Biological macromolecules are large organic molecules, such as proteins, carbohydrates, lipids, and nucleic acids, essential for life processes
• Lysosomes are cell organelles containing enzymes that break down cellular waste and debris.
• Melanocytes are cells that produce melanin, the pigment responsible for skin and hair color
• A ball and socket joint is a type of synovial joint in which the rounded surface of one bone moves within a depression on another bone, allowing greater freedom of movement
• Complementary strands are two strands of DNA in a double helix that pair according to the base-pairing rules: adenine (A) with thymine (T) and guanine (G) with cytosine (C).
• RNA components include a ribose sugar, a phosphate group, and nitrogenous bases (adenine, guanine, cytosine, and uracil).
• Genetic crosses are controlled mating experiments to examine how traits are inherited.
• The cecum is a pouch-like structure at the beginning of the large intestine.
• The renal vein carries blood filtered by the kidney away from it.
• The approximate threshold value for mammalian neurons is the minimum level of stimulation needed to trigger an action potential.