Quiz

QUIZ

1. Who was considered to be the father of the cell for his observations of dead cork cells?

a. Robert Remak b. Robert Hooke c. Rudolf Virchow d. Mathias Schleiden

Answer: b. Robert Hooke first discovered cells, although his work was done on dead cork cells, which did not reveal any of the inside details of cellular structures.

2. What structure within cells first originated the endosymbiotic theory regarding cells?

a. Mitochondria b. Nucleus c. Chloroplasts d. Golgi apparatus

Answer: c. Chloroplasts were first discovered to divide independently from the cell nucleus, which gave rise to the endosymbiotic theory that regarded chloroplasts as once being primordial bacteria.

3. What cell structure is not found in both prokaryotic cells and eukaryotic cells?

a. Nucleus b. Ribosomes c. Cell membrane d. Cytoplasm

Answer: a. Each of these is found in both prokaryotic cells and eukaryotic cells; however, nuclei are only found in eukaryotic cells and not prokaryotic cells.

4. What best describes round bacterial organisms arranged in pairs?

a. Streptococcus b. Staphylococcus c. Streptobacillus d. Diplococcus

Answer: d. Diplococcus is what the organisms are called when they are round and are arranged in pairs with one another.

5. What is not a key feature of an endospore?

a. Have metabolic activity b. Contain the cell’s genome c. Survives extreme environments d. Largely dehydrated

Answer: a. Each of these is a feature of an endospore except that they do not have metabolic activity so they can survive without the presence of nutrients.

6. What membrane transport mechanism requires ATP energy input to make it happen?

a. Osmosis b. Active transport c. Simple diffusion d. Facilitated diffusion

Answer: b. Active transport is the only transport mechanism that requires ATP energy input in order to have the substance cross from an area of low concentration to an area of high concentration.

7. What is characteristic of a eukaryotic cell’s nuclear envelope? a. It is a single lipid monolayer b. It is a single lipid bilayer c. It is a double lipid bilayer d. It is a double lipid monolayer

Answer: c. The nuclear envelope consists of a double lipid bilayer with two complete bilayers, an inner and outer bilayer.

8. What eukaryotic cell structure makes ribosomal RNA for the cell?

a. Nucleus b. Rough endoplasmic reticulum c. Golgi apparatus d. Nucleolus

Answer: d. The nucleolus is where the ribosomal RNA is located and where the start of the synthesis of ribosomes themselves begins.

9. Which two proteins are important in the movement of organelles within the cell?

a. Tubulin and myosin b. Dynein and kinesin c. Keratin and tubulin d. Dynein and actin

Answer: b. Dynein and kinesin are motor proteins that together work with microtubules in order to move organelles within the interior of the cell.

10. Inside what structure does chlorophyll inside the cell exist?

a. Thylakoids b. Cristae c. Cisternae d. Microtubules

Answer: a. Chlorophyll exists within the thylakoids, which are flattened membranous sacs that are found inside chloroplasts.