All skeletal systems provide support to organisms, but only two types are hard. Which lists the two hard skeletons?
A. Exoskeletons and Hydrostatic Skeletons
B. Exoskeletons and Endoskeletons
C. Endoskeletons and Hydrostatic Skeletons
D. Exoskeletons ands shells
Select your answer:
Topics:
Germs Genes and Cells Central and Peripheral Nervous System Restrictive Respiratory Disorders Circulatory & Respiratory System Vocabulary Cell Structure and Functions -ology Nutrition in Animals Organization of Systems Patho_Genetics Hormones Food System & Nutrients Cardiopulmonary Musculoskeletal LEOther quiz:
The Musculoskeletal System › ViewWhich statement best describes the Sliding Filament Theory?
A. Muscle fiber contraction is “all or none” the whole muscle fiber must contract once stimulated
B. Muscle fiber contraction is generated by thin filaments sliding past thick filaments
C. Muscle fibers contract as brief, single contractions
D. Muscle fibers fatigue as a result of prolonged strenuous muscle activity
Macromolecules › View
Which are enzymes?
A. simple carbohydrates
B. proteins that speed up chemical reactions
C. lipids that make up the cell membrane
D. a building block of DNA