Organizational Levels

What are the levels of organization in the human body from smallest to largest?

• Atom, molecule, cell, tissue, organ, organ system, organism

• Molecule, atom, cell, tissue, organ, organ system, organism

• Cell, atom, molecule, tissue, organ, organ system, organism

• Organism, organ system, organ, tissue, cell, molecule, atom

What are the basic units of a chemical element?

• Molecules

• Cells

• Atoms

• Tissues

What percentage of the human body is composed of hydrogen, oxygen, and carbon?

• 90%

• 95%

• 98%

• 99%

What are groups of atoms bonded together called?

• Cells

• Molecules

• Tissues

• Organs

What is the nucleotide adenine composed of?

• Carbon, nitrogen, and hydrogen

• Oxygen, hydrogen, and carbon

• Nitrogen, oxygen, and carbon

• Hydrogen, oxygen, and nitrogen

What are the basic structural and functional units of the human body?

• Tissues

• Organs

• Cells

• Molecules

What can cells be referred to as?

• The building blocks of life

• The smallest units of life

• The functional units of life

• The structural units of life

What are a group of similar cells working together as units called?

• Organs

• Tissues

• Molecules

• Systems

What do osteocytes come together to form?

• Muscle tissue

• Bone tissue

• Nerve tissue

• Blood tissue

Which of the following is NOT a function of tissues in the human body?

• Secretion

• Absorption

• Filtration

• Digestion