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WorksheetsWeek ?Cells and Enzymes
Total questions: 20
Worksheet time: 15mins
Which type of cell has a cytoplasm?
Prokaryotic cells
Eukaryotic cells
Both prokaryotic and eukaryotic cells
DNA is linear in what type of cells?
Prokaryotes
Eukaryotes
Which of the following provides evidence for the endosymbiotic theory?
Large prokaryotic cells engulfed smaller prokaryotic cells, they coexisted within the host cells with double-membrane bound organelles: nucleus, mitochondria, and chloroplast.
Large prokaryotic cells engulfed smaller prokaryotic cells, they did not coexist within the host cell and resulted in being digested.
Small prokaryotic cells engulfed large prokaryotic cells, they did not coexist within the host cells and resulted in being digested.
Endosymbiotic theory is false.
Both euglena and cyanobacteria are photosynthetic unicellular organisms found in pond water. Euglena, however, is eukaryotic while cyanobacteria are prokaryotic.
What feature distinguishes euglena from cyanobacteria?
the ability to reproduce asexually
the presence of ribosomes in cells
the ability to maintain homeostasis
the presence of a nuclear membrane
Which of the following structures can be used for DEFENSE in prokaryotic cells? (choose all answers that apply)
cell wall
capsule
ribosome
chromosome
lipopolysaccharide (LPS) layer
This feature allows a prokaryote to survive in an inhospitable environment by "waiting it out" until the environment becomes more conducive to life.
circular chromosome
ribosome
cytoplasm
endospore
The scientific theory of Endosymbiosis explains
The origin of eukaryotes
How species develop
How bacteria live
Why cells rely on one another
Mitochondria and chloroplasts have their own DNA.
true
false
What are the two categories of Prokaryotic Cells?
There is only one category
Plant and Animal
Bacteria and Archaea
Big and Small
When these bond together, they form a protein.
Amino Acids
Peptide Bonds
Ribose
Nucleotides
Click on the temperature that this enzyme is having optimum activity.
What is the purpose of an enzyme?
control how many reactions occur
raise activation energy
give permission for the reaction
speed up chemical reactions
Enzymes are (a) that (b) chemical reactions by (c) the amount of activation energy required to start the reaction.
proteins
speed-up
decreasing
carbohydrates
increasing
slow-down
Enzymes can be used again and again
True
False
Which of these is most likely an enzyme?
