Science Competition 6 to 8 IBS

Which of the following is NOT a principle of the cell theory?

• Cells are the basic units of life.

• All living things are made of cells.

• Very few cells are able to reproduce.

• All cells are produced from existing cells.

Which of the following enclose their DNA in a nucleus?

• prokaryotes

• bacteria

• viruses

• eukaryotes

Which of the following organisms are prokaryotes?

• plants

• bacteria

• animals

• fungi

Which organelle would you expect to find in plant cells but not animal cells?

• mitochondrion

• ribosome

• chloroplast

• smooth endoplasmic reticulum

A cell has mitochondria, ribosomes, smooth ER and other parts. Based on this information, it could not be

• a cell from a pine tree.

• a grasshopper cell.

• a yeast (fungus) cell.

• a bacterium.

Which of the following characteristics is common to both bacteria and viruses?

• contain genetic material

• can be killed using antibiotics

• have a cell membrane

• have a protein coat

One of the differences between bacteria and viruses is that

• viruses are living and bacteria are non-living

• bacteria are living and viruses are non-living

• viruses are biotic and bacteria are abiotic

• viruses are prokaryotic and bacteria are eukaryotic

Why are viruses not considered living organisms?

• Viruses can only be seen with an electron microscope

• Viruses cannot make their own nutrients.

• Viruses do not contain genetic material

• Viruses are not made up of cells

Which of the following structures serves as the cell’s outer boundary and regulates what goes in & out of the cell?

• mitochondrion

• cell membrane

• chloroplast

• channel proteins

The overuse of antibiotics

• contributed to the protection of the population against bacteria.

• influenced the ineffectiveness of these drugs against bacteria.

• can be quite effective at fighting against viruses

• is a very common practice of experienced doctors to deal with bacterial and viral diseases.