Living Things & Organization
Basic unit of structure and function in living things.
Cell
Organelle that acts as the control center holding DNA.
Nucleus
Name the process of cell division.
Mitosis
System that sends electrical signals through nerves.
Nervous System
What two systems work together when the brain tells muscles to flex?
Nervous and Muscular systems
Organisms made of only one cell.
Unicellular organisms
Organelle that generates cellular energy.
Mitochondria
Three main reasons why cells divide.
Growth, Repair, and Replacement
Outer protective layer of the body including skin, hair, and nails.
Integumentary System
What attaches muscles to bones to enable movement?
Tendons
List the 5 levels of organization from simple to complex.
Cells → Tissues → Organs → Organ Systems → Organisms
Organelle found only in plants that does photosynthesis.
Chloroplast
How many daughter cells are created from one dividing cell?
2 identical daughter cells
System that pumps blood to move oxygen and nutrients.
Circulatory System
Which two systems interact when bone marrow makes red blood cells?
Skeletal and Circulatory systems
Process of maintaining stable internal conditions.
Homeostasis
Three structures found in plant cells but NOT animal cells.
Chloroplast, Cell Wall, Large Central Vacuole
What happens to DNA before a cell divides?
DNA is copied / duplicated
Where red blood cells are produced in the skeletal system.
Bone marrow inside bones
Which two systems work together to clot blood and close a wound?
Circulatory (platelets) and Integumentary (skin cells dividing)
Name 5 of the 8 characteristics of living things.
Made of cells, use energy, grow/develop, reproduce, respond to stimuli (or homeostasis, adapt, DNA)
Barrier that controls what enters and exits the cell.
Cell Membrane
How do skin cells respond when you get a knee scrape?
Skin cells divide through mitosis to make new cells that fill the wound gap
Three types of muscle tissue in the muscular system.
Skeletal, Smooth, and Cardiac muscle
Explain the 3-system chain that allows you to kick a ball.
Nervous (brain sends signal) → Muscular (muscles contract) → Skeletal (pulls bones to kick)