Post on 19-Jan-2018
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Unit 2 test Review
Cells
Which cell structure contains the cell’s genetic material and controls
many of the cells activities?
• Organelle• Nucleus• Cell envelope• cytoplasm
Cells fall into two broad categories, depending on whether they
• Have a cell wall• Contain chloroplasts• Have a nucleus • Contain genetic material
Eukayotes usually contain:
• Genetic material• Specializec organelles• A nucleus• All of the above
Which of the following is NOT found in the nucleus?
• Nucleolus • chromatin• Cytoplasm• DNA
Which structures carry out cell movement?
• Chromosomes• Microtubules and microfilaments• Nucleolus• cytoplasm and ribosomes
Which organelle breaks down compounds into small particles that
the cell can us?
• Golgi apparatus• lysosome• Endoplasmic reticulum• Mitochondrion
Which organelle makes proteins using coded instructions that
come from the nucleus?
• Golgi apparatus• Mitochondrion • Vacuole• Ribosome
Which organelle converts the chemical energy stored in food into
compounds that are more convenient for the cell to use?
• Mitochondria• Endoplasmic reticulum• Golgi apparatus• chloroplast
Which of the following is a function of the cell membrane?
• Breaks down lipids, carbohydrates, and proteins from foods
• Regulates which materials enter and leave the cell
• Keeps the cell wall in place• Stores water, salt, proteins and
carbohydrates
Diffusion occurs because:
• Molecules constantly move and collide with one another
• Molecules never move or collide with one another
• The concentration of a solution is never the same throughout a solution
• The concentration of a solution is always the same throughout a solution.
An animal cell that is surrounded by fresh water will burst because the
osmotic pressure causes
• Water to move into the cell• Water to move out of the cell• Solutes to move into the cell• Solutes to move out of the cell
The cells of multicellular organisms are:
• Not dependent on one another• Specialized to perform particular functions• simpler than those of unicellular
organisms• Smaller than those of unicellular
organisms.
Who was the first person to identify and see cells?
• Anton van Leeuwenhoek• Matthias Schleinden• Robert Hooke• Rudolf Virchow
The thin, flexible barrier around a cell is called the
• Cell wall• Cell envelope• Cytoplasm• Cell membrane
Prokaryotes lack
•Cytoplasm•A nucleus•Genetic material•A cell membrane
Which of the following contain a nucleus?
•Bacteria•Organelles•Eukaryotes•Prokaryotes
The main function of a cell wall is to
• Store DNA• Support and protect the cell• Direct the activities of the cell• Help the cell move
Which of the following is a function of the nucleus?
• Controls most of the cell’s processes• Contains information to make proteins• Stores DNA• All of the above
Which of the following is a function of the cytoskeleton?
• Contains DNA• Helps keep the cell in shape• Surrounds the cell• Helps make proteins
Which of the following is an organelle found in the cytoplasm?
• Ribosome• Nucleolus• Chromatin • Cell wall
Which organelle would you expect to find in a plant cells?
MitrochondriaChloroplastRibosomeSmooth endoplasmic reticulum
Which of the following structures serves as the cell’s boundary from
its environment?
• Chloroplast• Channel proteins• Cell membrane • Mitochondrion
Diffusion is the movement of particles from
• An area of low concentration to an area of high concentration
• An area of equilibrium to an area of high concentration
• An area of high concentration to an area of low concentration
• All of the above
The diffusion of water across a selectively permeable membrane is
called
• Osmosis• Osmotic pressure• Facilitated diffusion• Active transport
Which term refers to cells having different tasks in an organism?
•Multicellular•Cell specialization•Unicellular•Levels of organizaton
Mathching: Know the functions of these organelles:
• Nuclueus• Mitochondria• Free ribosomes• Vacuole• Endoplasmic
reticulum• nuceolus
• Golgi apparatus• Chloroplast• Centrioles• Lysome• Cytoskeleton• Cell wall
Answers to matching• Assembles proteins• Powerhouse: creates
energy• Storage• janitor: contains
enzymes for digestion• Assembles lipid
components of cell membrane
• Formation of ribosomes• Capture energy from the
sun
• Maintain shape• Organize cell division• Modify, sort, and package
proteins• Provide support and
protection for plant cell• Contains genetic material
for cell instructions.