★ Biochemistry Quiz
If an atom has 15 protons, 16 neutrons, and 15 electrons, what is its:
A. Atomic number: 15, Mass number: 31
B. Atomic number: 16, Mass number: 31
C. Atomic number: 15, Mass number: 30
D. Atomic number: 31, Mass number: 15
Select your answer:
Topics:
Integumentary and Musculoskeletal System Monoclonal Antibodies Kidney - Loop of Henlé Hematologic System The Human Eye Knee Anatomy Nutrition form 2 Beneath the Skin Anatomy & Physiology: Respiratory Circulatory & Respiratory System History of Immunology Health Issues Related to Digesting System and Eating Habits Microorganisms, Health and Diseases Human Anatomy and Physiology - Types of Tissues Skin and DerivativesOther quiz:
Cell Cycle; Cancer › ViewThe first part of the cell cycle in which the cell is growing and replicating DNA
A. interphase
B. mitosis
C. cytokinesis
Endocrine System Disorders › View
What is the main symptom of goiter?
A. Swelling of the neck or larynx
B. Heat intolerance
C. Obesity
D. Abnormal increase in body length