Which statement best differentiates a plant cell from an animal cell.

Plant cells have chloroplasts for photosynthesis while animals don’t need them.

Plant cells have cell walls, chloroplasts and mitochondria, animals don’t have.

Plant cells have vacuoles, chloroplasts and cells walls, animals have them too.

Plant cells have lysosome and centrioles while animals have vacuole and cell walls.

Student is observing onion cells under the microscope near a bright window. The image appears too bright and unclear, so she decides to adjust the lighting for better visibility. Question: What should student do to properly regulate the light while viewing the specimen?

Both A and B show correct ways of regulating light while using the microscope.

Find the correct face of the mirror depending on the lighting set-up until she sees bright circle light.

If the Use the iris diaphragm to regulate the amount of light coming into the microscope.

Move the mirror randomly until the image becomes darker.

Adjust the fine adjustment knob carefully for a sharper view.

Change the lens back to low power.

Adjust the stage to raise or lower the slide quickly.

Use the coarse adjustment knob to make the image clearer.

Adjusting the objectives from LPO to HPO makes the image under the microscope look bigger.

When you make use of HPO, organelles are more defined.

Both objectives show the cell wall and the nucleus.

Staining the sample using betadine or iodine solution to increase contrast.

Moving the slide to locate an appropriate cell region.

Adjusting the condenser to concentrate the light.

Using a thicker glass slide to increase visibility.

Place the slide, begin with low power objective, use the coarse focus knob, then switch to high power and adjust with the fine focus knob.

Place the slide, directly use high power objective, and adjust the coarse focus knob.

Place the slide, add more light by fully opening the diaphragm, and skip focusing.

Place the slide, stain heavily, and use only the mirror to adjust brightness.