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
Diffusion involves only the movement of WATER molecules
FALSE; they can be any type of molecule! (osmosis is ONLY water)
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
What is 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
There are THREE types of exocytosis
FALSE; There are THREE types of endocytosis, not exocytosis!
DOUBLE POINTS!
An egg is placed into a container holding corn syrup (which is purely a sugar solute) and it is held in this solution overnight...
What will happen to the egg?
(Hint: Two things will happen)
1. The egg will release water and the water flow OUT of the egg into the corn syrup
2. The egg will SHRINK in size (hypertonic)
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
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 of the following is NOT a type of muscle tissue in the human body?
a) Cardiac Tissue
b) Epithelial Tissue
c) Smooth Tissue
d) Skeletal Tissue
b) Epithelial Tissue
DOUBLE POINTS!
The mitochondria produces energy for the cell to survive; what is this energy called? (hint: it's three letters!)
ATP energy
A substance (e.g., nutrients from food or medicine from a drug) is having difficulty entering a cell; what type of cytosis would allow it to enter more effectively?
RECEPTOR MEDIATED ENDOCYTOSIS (RM cytosis)
DOUBLE POINTS!
Cell Membranes are SELECTIVELY PERMEABLE because they can open and close on their own with no assistance
FALSE; Cell membranes are SELECTIVELY PERMEABLE because they contain...
- PROTEIN CHANNELS
- TRANSPORT PROTEINS
- LIPID BILAYER
- RECEPTORS
Osmosis and Diffusion are very similar because they involve the movement of molecules to eventually reach a balanced state. 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