Muscle Mania
Skin Deep
Skeletal System
Organelle HQ
Domains & Kingdoms
100

This is the type of muscle tissue attached to bones that allows voluntary movement.

What is skeletal muscle?

100

This is the largest organ of the human body.

What is the skin?

100

This is the number of bones in a typical adult human skeleton.

What is 206?

100

This organelle contains DNA and acts as the cell’s control center.

What is the nucleus?

100

This is the broadest category in the modern classification system.

What is a domain?

200

This type of muscle is found in the walls of hollow organs, such as the stomach, intestines, and blood vessels.

What is smooth muscle?

200

This outermost layer of the skin contains no blood vessels.

What is the epidermis?

200

This is the longest and strongest bone in the human body.

What is the femur?

200

These organelles build proteins by linking amino acids together.

What are ribosomes?

200

Three domains include Bacteria, Archaea...but which one contains plants, animals, fungi, and protists?

What is Eukarya?

300

This involuntary muscle tissue is found only in the heart.

What is cardiac muscle?

300

This skin pigment helps protect cells from ultraviolet radiation and contributes to skin color.

What is melanin?

300

This type of connective tissue connects bone to bone at a joint.

What is a ligament?

300

This organelle modifies, sorts, packages, and ships proteins.

What is the Golgi apparatus, or Golgi body?

300

Organisms in this domain are prokaryotic and are commonly found in ordinary environments such as soil, water, and the human body.

What is Bacteria?

400

The basic functional unit of a skeletal muscle fiber, where contraction occurs, is called this.

What is a sarcomere?

400

This deeper skin layer contains blood vessels, nerves, hair follicles, and many glands.

What is the dermis?

400

The axial skeleton includes the skull, vertebral column, and this structure that protects the heart and lungs.

What is the rib cage, or thoracic cage?

400

Often called the “powerhouse of the cell,” this organelle produces much of the cell’s ATP.

What are mitochondria?

400

This domain contains prokaryotes that are genetically distinct from bacteria; many species live in extreme environments, although not all do.

What is Archaea?

500

During muscle contraction, thin filaments of this protein slide past thick filaments of myosin.

What is actin?

500

This vitamin can be produced in the skin when ultraviolet light exposure activates a precursor molecule.

What is vitamin D?

500

These specialized cells break down old or damaged bone tissue during bone remodeling.

What are osteoclasts?

500

This organelle contains digestive enzymes that break down wastes, damaged cell parts, and large molecules.

What is a lysosome?

500

In the common six-kingdom model, this kingdom includes multicellular, heterotrophic eukaryotes that usually move and do not have cell walls.

What is Animalia?

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