Definitions
Define multicellular organism and give an example
An organism consisting of more than one cell with multiple working parts
All bacteria are harmful
False
What is the purpose of the skeletal system & provide 2 organs
Support for movement and protection of organs (bones and cartilage)
What is the difference between permeable and impermeable?
Permeable surface has pores or openings that allow fluids to pass through, whereas an impermeable surface does not
Define unicellular and give an example
An organism that consists of one cell, and all life processes (digestion, feeding, excretion, etc.) occur in the same place (inside the single cell)
Cells are only found in animals and humans
False
What is the purpose of the digestive system & provide 3 organs
Breaks down food and expels waste (mouth, esophagus, stomach, liver, gall bladder, pancreas, intestines)
What is the difference between plant and animal cells?
Define Specialized cells and give an example
Cells designed to carry out a particular role in the body
True
What is the purpose of the Lymphatic system & provide 2 organs
Removes abnormal cells (Lymph nodes & vessels)
Why are unicellular organisms usually smaller than multicellular organisms?
It's much easier to perform all its functions on a smaller level
Define osmosis
Molecules of a solvent passing through a semipermeable membrane from a less concentrated solution into a more concentrated one, equalizing (balancing) the concentrations on each side of the membrane.
Anthony von Luvenhawk was the first person to see cells
False: Antony van Leeuwenhoek
What is the purpose of the Integumentary System & Name 3 organs
Protects the body and maintains temperature (skin, hair, nails, sweat glands)
List the 5 organs that are essential for survival
Heart, brain, kidneys, liver, lungs
Define diffusion
The movement of molecules or particles from an area of high concentration to an area of lower concentration, continuing until equilibrium (balance) is reached
The condenser lens is the name of the smallest objective lens on a microscope
False: it's the lens that helps focus light onto a specimen
What is the purpose of the nervous system & list 3 organs in it
Sends and receives messages and information from other nerves in the body. Aids most organ systems (brain, spinal cord nerves)
How do unicellular organisms move?
Most use cilia and flagella to propel themselves forward