Basic Biological Principles_A

If listed from the smallest scale to the largest, which is the correct order of these common components of an organ system?

• biomolecules, cells, tissues, organs, organelles

• biomolecules, organelles, cells, tissues, organs

• biomolecules, cells, tissues, organelles, organs

• cells, tissues, organs, organelles, biomolecules

Tags

NGSS.MS-LS1-3

There are three parts to the cell theory. Which is NOT one of those parts?

• All organisms are composed of one or more cells.
• The cell is the basic unit of structure and organization in organisms.
• Cells spontaneously arise from carbon and nutrients carried in the bloodstream.
• All cells come from pre-existing cells.

Which is true of prokaryotic and eukaryotic cells?

• Prokaryotic cells are larger than eukaryotic cells.
• Eukaryotic cells do not have nuclei, and prokaryotic cells do have nuclei.
• Prokaryotic cells lack membrane-bound organelles, and eukaryotic cells contain membrane-bound organelles.
• Eukaryotic cells are simpler than prokaryotic cells.

How does the size of a eukaryotic organism normally compare to the size of a prokaryotic organism?

• eukaryotes are normally much smaller than prokaryotes
• eukaryotes and prokaryotes are both normally very small organims
• eukaryotes and prokaryotes are both very large organisms
• eukaryotes are much larger than prokaryotes

Which of the following is true about cells?

• neither prokaryotes nor eukaryotes ever contain both a true nucleus that is well-defined and organelles that are separated from the cytoplasm by membranes
• Generally, prokaryotes do not have a true nucleus or membrane-bound organelles and eukaryotes contain both a nucleus and membrane-bound organelles
• Both eukaryotes and prokaryotes contain a true nucleus that is well-defined and organelles that are membrane-bound 
• Generally, eukaryotes do not have a true nucleus or membrane-bound organelles and prokaryotes contain both a nucleus and membrane-bound organelles. 

Some prokaryotes and eukaryotes have a cellular structure called a flagella.  What is the purpose of the flagella?

• to transport molecules across the cell membrane
• to propel the cell through liquid
• to collect food for the cell
• to tell the cell the direction of a food source

How does DNA in prokaryotic cells differ from the DNA in eukaryotes?
I. Prokaryotic DNA contains uracil instead of thymine.
II. Prokaryotic DNA is not separated from the rest of the cell by a nuclear membrane.
III. Prokaryotic DNA is not packaged into chromosomes.
IV. Prokaryotic DNA cannot be replicated.

• I and II only
• I, II, and III only
• III and IV only
• II and III only

Prokaryotic cells do not have a nucleus, mitochondria, or other membrane-bound organelles, but they can possess...

• ribosomes
• cytoplasm
• cell membrane
• all of these

What type of cell is this?

• plant
• animal
• prokaryotic
• protist

Tags

NGSS.MS-LS1-1

Both eukaryotes and prokaryotes possess DNA and engage in genetic processes.  Which of the following is true of their cellular genetics?

• eukaryotic and eukaryotic DNA use different genetic codes (nucleotides)
• eukaryotic DNA is linear where most prokaryotic DNA is circular
• eukaryotic cells generally require fewer genes to operate than prokaryotic cells
• prokaryotic DNA cannot be translated into proteins because of the lack of a nucleus