About Cells Part 1
What organelle surrounds the cell in both plant and animal cells?
Cell Membrane
Which cell organelle controls and directs other cells movement and activities?
Nucleus
A compound (light) microscope can be used to clearly observe all cell organelles
FALSE; you need an electron microscope to do this!
Spraying perfume is a good real world example of ___________?
Diffusion
The correct order of cell organization in the human body has 4 levels which go from smallest to largest... Which level is missing here?
Cells --> ? --> Organs --> Organ Systems
Tissues
the clear jellylike substance that acts as the empty space within the cell and separates the cell membrane from all other organelles
Cytoplasm
Which cell organelle is responsible for digestion and waste removal?
Lysosomes
Diffusion is the movement of molecules from an area of LOW concentration to HIGH concentration
FALSE; Movement of molecules from HIGH to LOW concentration
Osmosis is the movement of WATER molecules across a semi permeable membrane, from an area of ______ solute concentration to an area of ________ solute concentration.
LOW solute concentration to HIGH solute concentration
Tissues are groups of cells which are similar in structure and work together to perform functions in the human body. Nervous Tissue in the human body uses which two cell components?
a) Skeletal and Cardiac
b) Bones and Tendons
c) Skin and Covering of Organs
d) Nerves and Sensory Cells
d) Nerves and Sensory Cells
Which organelle processes and packages secretions within the cell?
Golgi Apparatus / Body
When something is being transported OUT of a cell, this is called...?
Exocytosis
Amoeba is an example of a really simple unicellular organism
TRUE
DOUBLE POINTS!
If the solute concentration is higher OUTSIDE of the cell compared to inside... (For example, an egg placed in corn syrup)
1. Which direction will water flow?
2. What will happen to the cell?
1. The cell will release water and the water flow OUT of the cell
2. The cell will SHRINK in size
DOUBLE POINTS!
The main function of this organ system brings oxygen into the human body and expels carbon dioxide as a waste product.
1. What is the major organ involved in this sytem?
2. What is this organ system called?
1. LUNGS
2. Respiratory System
Which organelle focuses on making proteins to repair cells from damage?
Ribosomes
What something is being transported INTO a cell, this is called...?
Endocytosis
When something needs to be transported within a cell the process is called Transcytosis
TRUE
A saltwater fish is placed into a freshwater tank. Eventually the fish dies because its cells become bloated with excess water.
What type of solution is the freshwater tank?
(Hypertonic, Hypotonic or Isotonic)?
Hypotonic solution
Which organ system is responsible for using the brain as a major organ to send messages and signals the rest of the body?
a) Musculoskeletal system
b) Digestive System
c) Nervous System
d) Circulatory System
c) Nervous System
Which cell organelle produces energy for the cell to survive
Mitochondria
Which organelle is responsible for food storage in both types of cells?
Vacuole
Cell Membranes are PERMEABLE, which means they can freely allow anything to pass through to go in and out of the cell
FALSE; Cell membranes are SELECTIVELY PERMEABLE. This means they can only allow certain things to go in and of the cell.
Osmosis and Diffusion are very similar because they involve the movement of molecules to eventually reach a balance or dynamic equilibrium. What is the scientific name of this balance?
Homeostasis
How many organ systems are in the human body?
a) 11
b) 15
c) 5
d) 10
a) 11