WorksheetsUnit 4 Biomolecules and Cells Review
Total questions: 15
Worksheet time: 8mins
Students created note cards comparing characteristics of eukaryotic and prokaryotic cells. Which set of note cards most accurately compares these cells?
Eukaryotic Cells - membrane bound nucleus
DNA chromosomes in the nucleus (linear)
Prokaryotic Cells - No nucleus or other membrane bound organelles
DNA chromosomes are in the cytoplasm (circular or free floating)
Eukaryotic Cells - membrane bound nucleus or organelles
DNA free floating in the cytoplasm
Prokaryotic Cells - No nucleus or other membrane bound nucleus
DNA is free floating in the cytoplasm
Eukaryotic Cells - No membrane bound nucleus or organelles
DNA chromosomes in the nucleus
Prokaryotic Cells - Membrane bound nucleus or organelles
DNA chromosomes in the nucleus
Which molecule synthesized by plants is a major source of energy for cellular processes in both plants and animals?
Wax
Nucleic Acid
Glucose
Chlorophyll
Carbohydrates are more easily metabolized than lipids. However, on a gram-for-gram basis lipids provide cells with more —
nitrogen
proteins
structure
energy
Which statement describes the process of osmosis in an animal cell?
Sugar molecules move across the plasma membrane until the cell has enough energy to grow in size and divide.
Water molecules move across the plasma membrane until solute concentrations are equal on both sides of the membrane.
Ions move across the plasma membrane until the inside of the cell has a higher concentration of positive charges.
Enzymes move across the plasma membrane until the cell has completed metabolism.
Enzymes are proteins that have a three-dimensional shape that is specic to a particular substrate. Environmental conditions can change the shape of the protein.
What is the most likely result if the shape of the enzyme changes?
The substrate will change its shape to match the enzyme.
The enzyme will no longer be able to catalyze the reaction with the substrate.
The products made from the enzyme and the substrate will be changed.
The enzyme will be able to bind to more diverse substrates than before.
Which statements best compare a function of proteins and lipids in a human cell?
Proteins provide energy for cellular processes. Lipids catalyze chemical reactions inside the cell.
Proteins catalyze chemical reactions inside the cell.
Lipids allow for the transport of certain molecules into and out of the cell.
Proteins allow for the transport of certain molecules into and out of the cell. Lipids store genetic information for cells.
Proteins store genetic information for cells. Lipids provide energy for cellular processes.
Materials are provided to students to build models of a prokaryotic cell, a eukaryotic cell, and a virus. The materials and the structures they represent are listed in the table shown above. Which material will students use in all three models?
Yellow paper oval
Gray paper hexagon
Blue yarn
Purple buttons
A diagram of removing glucose from the blood by a fat cell is shown. Which statement best describes the role of insulin and glucose-transport proteins in this process?
They stimulate a response from white blood cells during glucose entry into the cell.
They keep the plasma membrane exible when glucose is removed from the blood
They help to maintain stable glucose levels both inside and outside the cell.
They utilize the excess energy the cell produces to create more glucose.
Based on the data, this enzyme functions best at what temperature and pH? What is the role of an enzyme in a biological reaction?
The enzyme functions best at 37C and a Ph of 6.8. The role of an enzyme is to speed up chemical reactions to lower activation energy.
The enzyme functions best at 50C and a Ph of 10. The role of an enzyme is to lower the chemical reactions to lower activation energy.
The enzyme functions best at 37C and a Ph of 6.8. The role of an enzyme is to lower the chemical reactions to speed up the activation energy.
The enzyme functions best at 10C and a Ph of 2. The role of an enzyme is to speed up chemical reactions to lower activation energy.
Which statement is best supported by the graph?
An enzyme must be composed of multiple polypeptides, or subunits, to be active.
An enzyme’s rate of activity increases with time until it becomes inactive.
An enzyme functions best under specific temperature conditions.
An enzyme works equally well in bacteria that are adapted to high temperatures and in eukaryotic cells such as human cells.
Prokaryotic Cells could be labeled as
single celled, no nucleus, with flagella
reproduce through mitosis, linear DNA, with ER
have membrane bound nucleus and organelles, multicellular
have mitochondria, are larger than 10 micrometers, have complex structures
Eukaryotic cells can be labeled with
single-celled, no nucleus, no membrane bound organelles, simple
free floating or circular DNA, nuclear membrane, complex
linear DNA, endoplasmic reticulum (ER), membrane bound nucleus and organelles, multicellular, complex
smaller than 10 micrometers, membrane bound organelles, nucleus, simple
Which cellular function of carbohydrates and lipids should be placed in the shared section of the Venn diagram?
Hormone production
Structural suppost of cell walls
energy storage
catalyst for chemical reactions
Which statement best explains the function of the vesicles?
Delivering packaged materials to the Golgi apparatus for protein synthesis
Exchanging genetic information between the Golgi apparatuses of separate cells
Extracting portions of the Golgi apparatus to be regenerated for growth within the cell
Transporting packaged molecules from the Golgi apparatus to be released out of the cell
Which pair of statements best compares the primary functions of the carbohydrate chitin and the protein chitinase?
The chitin in the exoskeleton provides insulation for insects.
The chitinase stores genetic material for insectivorous bats.
The chitin in the exoskeleton breaks down for energy to be used by insects.
The chitinase provides insulation for insectivorous bats.
The chitin in the exoskeleton stores genetic material for insects.
The chitinase provides support and protection for insectivorous bats.
The chitin in the exoskeleton provides support and protection for insects.
The chitinase breaks down chitin for energy to be used by insectivorous bats.
