CATSCAN

Which statement justifies why viruses could be considered nonliving?

• Viruses lack cellular organelles

• Viruses lack genetic material

• Viruses lack structures for movement.

• Viruses lack membranes around their DNA.

Scientists claim that viruses are nonliving. Which evidence supports the classification of viruses as nonliving?

• Viruses are unable to change or evolve over time.

• Viruses must use their host’s cellular machinery in order to reproduce.

• Viruses cause many different types of diseases.

• Viruses lack genetic material that can be passed to future generations.

How would a prokaryotic cell model differ from a eukaryotic cell model?

• The model will only include a nucleus and a Golgi complex.

• The model will only include loosely arranged DNA and mitochondria.

• The model will only include ribosomes and loosely arranged DNA.

• The model will only include a nucleus and rough endoplasmic reticulum.

How does the organization of DNA in eukaryotic cells differ than that of prokaryotic cells?

• A eukaryotic cell has more DNA located throughout the cytoplasm and also has more nuclei.

• A eukaryotic cell has DNA contained in a nucleus and does not have any plasmids.

• A eukaryotic cell has less DNA located throughout the cytoplasm but has more plasmids.

• A eukaryotic cell has DNA contained in a plasmid and does not have any nuclei.

Membrane bound organelles are found in which type of cell?

• animal cells only

• eukaryotic cells only

• prokaryotic cells only

• plant cells only

What organelle transforms the energy from carbohydrates into ATP molecules?

• chloroplast

• mitochondrion

• nucleus

• ribosome

What structure controls what enters and leaves the cells?

• Cell Wall

• Mitochondria

• Cell Membrane

• Vacuole

What organelle is found in both eukaryotic and prokaryotic cells?

• lysosome

• mitochondria

• nucleus

• ribosome

What do animal cells and bacterial cells have in common?

• Both have cytoplasm

• Both have mitochondria

• Both have nuclei

• Both have organized DNA

A long chain of which subunit makes up a protein?

• amino acid

• fatty acid

• nucleotide

• monosaccharide