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WorksheetsBiology Unit 3 - Cell Structure &Function -SchoolNet Aligned
Total questions: 44
Worksheet time: 22mins
The picture shows a timeline of events leading to the creation of the current cell theory. Which statement best describes how this timeline demonstrates the process of science?
Similar to cell theory, one new invention always changes existing research and ideas.
Similar to cell theory, changes to scientific ideas occur very quickly and with little research.
Similar to cell theory, science only changes when famous researchers have new ideas and information.
Similar to cell theory, science is continually changing and evolving with new information and technology.
Suppose that a scientific idea is well-tested and can be used to make predictions in numerous new situations, but cannot explain one particular event. What is the name for this well tested idea?
hypothesis that is incorrect.
hypothesis that must be retested.
theory that should be discarded.
theory that may need revision.
A scientist has discovered an unidentified organism. Cell theory states that which of the following must be true about this new living thing?
It cells come from preexisting cells.
All its cells have different functions.
It will not be made up of cells.
All its cells are considered nonliving.
In 1858, a German scientist named Rudolph Virchow stated that spontaneous generation of living things from nonliving matter was impossible. This statement contributed to the development of the cell theory. In effect, what was Virchow saying?
Cells are alive.
All cells come from existing cells.
The cell is the basic unit of all organisms.
Cells exist in a wide variety of shapes and sizes.
As the cell theory transformed throughout the years, scientists developed several defining statements about cells. Which of these statements is part of the cell theory?
Cells absorb other cells for energy.
All cells are composed of identical parts.
All living things are made of one or more cells.
Plant cells function differently from animal cells.
Which of these best describes the function of the semi-permeable membrane in plant and animal cells?
to release ATP during the process of cellular respiration
to capture light energy in order to perform photosynthesis
to generate all the energy responsible for cellular metabolism
to regulate the movement of material into and out of the cell
Two cells are represented by the following diagram. Which of the following statements is an accurate conclusion that can be drawn about these two cells?
Cell 1 is a prokaryotic cell due to the presence of ribosomes
Cell 2 is a prokaryotic cell due to the presence of cytoplasm
Cell 1 is an eukaryotic cell due to the presence of a flagellum
Cell 2 is an eukaryotic cell due to the presence of a nucleus
A diagram of a cell is provided. What is the function of the organelle indicated by the arrow?
to manufacture proteins
to store excess water
to facilitate waste removal
to generate energy
The diagram below represents movement of a large molecule across a membrane. Which process is represented by this diagram?
diffusion
active transport
protein building
gene manipulation
10. An investigation was set up to study the movement of water through a membrane. The results are shown in the diagram below. Based on these results, which statement correctly predicts what will happen to red blood cells when they are placed in a beaker containing a saltwater solution that has a salt concentration much higher than that of the red blood cells?
The red blood cells will lose water and decrease in size.
The red blood cells will first lose water, then absorb water.
The red blood cells will first absorb water, then lose water.
The red blood cells will absorb water and increase in size.
Misha places some cells from an onion skin on a microscope slide. He uses a freshwater solution to make the wet-mount slide. When he observes the cells under the microscope for an extended period of time, what is he most likely to see?
The cells have shrunk within the cell walls.
The cells have not been affected by the solution.
The cells have swollen, expanding the cell walls.
The cells have dissolved, destroying the cell walls.
A diagram of a plant cell is shown below. Which of these is a function of the cell membrane and NOT the cell wall?
directing growth of the plant
controlling what enters the cell
providing structure to the plant
storing genetic material for the cell
Which process requires cellular energy?
osmosis
diffusion
active transport
passive transport
Which organelles are involved in energy conversion?
mitochondria and chloroplasts
mitochondria and ribosomes
smooth and rough endoplasmic reticulum
Golgi apparatus and chloroplasts
The cell membrane that surrounds all cells is said to be semipermeable. What does this mean?
Only certain substances can pass through the cell membrane.
Only particles of a substance that are small enough can pass through the cell membrane.
The cell membrane always uses energy to transport particles of substances into and out of the cell.
The cell membrane consists of two layers of lipids with proteins that are either embedded in these layers or on the surface.
A student watered a wilted houseplant. The diagrams show how the plant changed over time. Which cell organelle is responsible for this change?
nucleus
cell membrane
endoplasmic reticulum
ribosome
How do plant cells differ from animal cells?
plant cells have a nucleus and animal cells do not
plant cells have a cell membrane and animal cells do not.
plant cells have cytoplasm and animal cells do not.
plant cells have large vacuoles and animal cells have small vacuoles.
Fish use their gills to exchange oxygen and carbon dioxide with their environment. Which process allows the exchange of oxygen and carbon dioxide across the cell membrane of the gill cells?
carrier proteins
simple diffusion
active transport
facilitated diffusion
What is the organelle that controls the cell's activities?
cytoplasm
mitochondria
nucleus
lysosome
Sugar is a large molecule that cannot pass freely through a cell membrane. How does this important nutrient enter the cell?
osmosis
diffusion
active transport
transport pump
A section of a cell membrane is shown in the diagram below. Which type of membrane transport by a carrier protein is most likely shown in the diagram if energy is NOT being used?
Osmosis
Simple diffusion
Active transport
Facilitated diffusion
Which statement is true about the cells in the diagram?
Cell 1 is a bacteria and cell 2 is a plant cell with chloroplast
Cell 1 is a prokaryote and cell 2 is a eukaryote
They both are animal cells.
They both have a nucleus.
The term "theory" has a precise meaning in science that is different from how that term is used in everyday conversation. Which of the following statements best describes a scientific theory?
A scientific theory explains what results are expected to be observed in a scientific investigation.
A scientific theory provides an explanation that accounts for a wide range of different observations.
A scientific theory describes the types of observations that can made during a scientific investigation.
A scientific theory is a hypothesis that has been tested enough times that it is generally thought to be correct.
Which term represents the strongest, most powerful scientific explanation?
conclusion
hypothesis
law
theory
Between 15,000 and 18,000 new species of organisms are discovered each year. Cell theory states that which of the following must be true about each new kind of organism?
It must be made up of one or more cells.
It cells must be able to make their own food.
All its cells must perform the same function.
Some of its cells must include a cell wall.
Which of the following is NOT part of the cell theory?
Cells are the basic unit of all living things.
All cells come from pre-existing cells
All cells contain DNA
All living things are made of cells
Which process does not require energy in the form of ATP?
exocytosis
endocytosis
diffusion
phagocytosis
Means only certain things may enter or exit a cell.
selectively permeable
hydrophilic
isotonic
hydrophobic
When dissolved particles are the same inside and outside a cell it is said to be?
hypertonic
hypotonic
isotonic
osmosis
This scientist said all plants were made out of cells
Schlieden
Schwann
Hooke
Virchow
He observed "cells" while observing cork cells.
Schlieden
Schwann
Hooke
Virchow
Which of these does not describe a eukaryotic cell?
nucleus
complex
large
DNA in cytoplasm
This organelle that is found only in plant cells.
mitochondria
nucleus
vesicle
large central vacoule
Cell membranes are said to...
control what enters and exits cells
made of a phospholipid bilayer
be semipermeable
all of these
Which of the following is not a type of passive transport?
osmosis
facilitated diffusion
diffusion
endocytosis
The movement of water only into cells is:
osmosis
diffusion
mitosis
active transport
Particles moving from a high concentration to a lower concentration are demonstrating _____.
diffusion
active transport
osmosis
mitosis
The Fluid Mosaic Model...
is the process of making proteins through the movement of ribosomes to the golgi apparatus
describes the cell's boundary composed of the cell wall and the cytoskeleton
describes the movement of RNA through the nuclear pore into the cytoplasm
describes the cell membrane as made of many different parts that are not fixed in one place
A hypertonic solution is one where...
the concentration of a solution outside the cell is higher than the concentration than inside the cell
the concentration of a solution outside the cell is equal to the concentration than inside the cell
the concentration of a solution outside the cell is lower than the concentration than inside the cell
A solution that is hypotonic to a cell has...
more solutes than the cell.
the same concentration of solutes as the cell.
fewer solutes than the cell.
These organelles in plants capture light energy and store it in glucose molecules to be used as food.
Chloroplasts
Endoplasmic Reticulum
Mitochondria
Vacuoles
Organisms with cells that have a nucleus are called . . .
Archaea
Eukaryotes
Bacteria
Prokaryotes
These tiny cell structures assemble protein molecules from amino acids.
Carbohydrates
Lipids
Lysosomes
Ribosomes
Which structures are found in every living cell?
cell membrane and cytoplasm
a cell wall and nucleus
chloroplasts and mitochondria
chloroplasts and cell wall
