Biology: Cell Structure, Tissues, and Human Body Systems

Levels of organization in biology

Cell, Tissue, Organ, Organ System, Organism.

Smallest structural and functional unit of life

Cell.

Group of similar cells organized for a specific function

Tissue.

Level including all living and nonliving factors in an area

Ecosystem.

Classification of blood

Connective tissue.

Examples of organs

Liver, stomach, and heart.

Best description of homeostasis

Maintaining stable internal conditions.

Organ system responsible for hormone production

Endocrine system.

The cell membrane is primarily made up of

Phospholipid bilayer.

Powerhouse of the cell

Mitochondria.

Ribosomes are responsible for

Protein.

What process requires energy (ATP)

Active transport

DNA is stored in what structure?

Nucleus.

Fluid inside the cell where organelles are suspended

Cytosol.

Which organelle packages and ships proteins

Golgi apparatus.

Which placed in a hypertonic solution will

Shrink.

Which tissue provides support and binds structures

Connective tissue.

Main function of osteoblasts

Build bone.

Shaft of a long bone

Diaphysis.

Red bone marrow is the site of

Blood cell production.

Part of a long bone containing yellow marrow

The Medullary cavity.

Which type of joint is in the knee

Hinge joint.

The bone forming the forehead

Frontal bone.

Bone not part of the axial skeleton

Femur.

The functional unit of compact bone

Osteon.

Mineral most important for bone hardness

Calcium.

Vertebrae located in the lower back

Lumbar vertebrae.

Which bone is apart of the pectoral girdle

Scapula.

Function of the skeletal system

Protecting organs.

The mature bone cell maintaining bone matrix

Osteocyte.

The basic functional unit of the nervous system

Neuron.

Part of the neuron that receives signals

Dendrite.

The myelin sheath functions to

Speed up nerve impulses.

The central nervous system (CNS) consists of

Brain and spinal cord.

The gap between two neurons

Synapse.

The lobe of the brain responsible for vision

Occipital lobe.

Reflexes occur quickly because they

Bypass the brain and go to the spinal cord.

The sympathetic division of the autonomic nervous system is responsible for

Fight or Flight.

The protective membranes surrounding the brain and spinal cord

Meninges.

Which ions are required for neurotransmitter release

Calcium ions.