WorksheetsCells
Total questions: 20
Worksheet time: 17mins
Despite differences in size and shape, at some point all cells have DNA and a
cell wall
cell membrane
mitochondria
nucleus
German Scientists Schleiden and Schwann determined that the base unit of structure and function in living things is the
atom
molecule
cell
nucleus
The portion of the cell outside the nucleus is called the
organelle
cytoplasm
nucleoleus
ribosome
Which organelles are known as the "power plants" of the cell because they transfer chemical energy from food to compounds the cell can use?
mitchondria
ribosomes
lysosomes
vacuoles
Proteins are assembled on
ribosomes
vacuoles
lysosomes
centrioles
Which two organelles are involved in the movement of a cell in its environment?
microtubules and centrioles
flagella and cilia
centrioles and the cell wall
cytoskeleton and lysosomes
Solute particles move from an area of higher concentration to an area of lower concentrations in a process called
osmosis
transport
diffusion
equilibrium
Which of the following statements is part of the cell theory?
Cells are composed mostly of empty space
Cells are generally large enough for the unaided eye to see.
All cells are produced from existing cells.
Only animals are made up of cells.
A number of scientists made contributions to cell theory. Which scientist was the first to use a light microscope to observe cells in a slice of cork?
Anton van Leeuwenhoek
Matthias Schleiden
Robert Hooke
Theodor Schwann
What basic concept of biology includes the idea that new cells can be produced only by the division of existing cells?
(a)
Lysosomes are organelles that contain enzymes. Which of the following is a function of lysosomes?
Lysosomes build lipids, carbohydrates, and proteins.
Lysosomes package lipids, carbohydrates, and proteins.
Lysosomes break down lipids, carbohydrates, and proteins.
Lysosomes store lipids, carbohydrates, and proteins.
Which of the following structures are typically present in both plant and animal cells?
cell walls
centrioles
chloroplasts
mitochondria
All cells contain cell membranes. Which of the following describes the composition of cell membranes?
Cell membranes are composed of carbohydrate chains, which allow all materials to enter and leave the cell.
Cell membranes are composed of cellulose, which provide rigidity for the cell.
Cell membranes are composed of cytoplasm, which allows proteins to be excreted by the cell.
Cell membranes are composed of lipid molecules, which provide a flexible structure.
A cell is placed in an isotonic solution. How does the cell maintain homeostasis in this environment?
There is no movement of water molecules into or out of the cell because the concentrations of solute particles inside and outside the cell are the same.
Water will move across the cell membrane to the inside of the cell because the cell has a higher concentration of solute particles than the solution.
Water will move across the cell membrane to the outside of the cell because the solution has a higher concentration of solute particles than the cell.
Water will move across the cell membrane in both directions because the concentrations of solute particles inside and outside the cell are the same.
Driven by differences in solute concentration, the net movement of water out or into a cell produces a force known as (a)
The protein channels that allow water to move in and out of the cell.
(a)
What organelle modifies, sorts, and packages proteins and other materials from the endoplasmic reticulum for storage in the cell or release outside the cell.
(a)
The relatively constant internal physical and chemical conditions that all organisms must maintain to survive is knowns as
osmosis
endocytosis
homeostasis
exocytosis
What is the term that describes the diffusion of water through a selectively permeable membrane?
(a)
What are the two types of active transport?
(a)
