Bio review

Front

In our lab, why didn't the radish seed grow in salt water, or the yeast in the fresh water?

Back

The radish seed and yeast needed different conditions to come out of dormancy.

Front

On a microscope, where is the objective lens and where is the eyepiece?

Back

Objective lenses are close to the stage and rotate, the eyepiece is the part of the microscope that you look through.

Front

If you use the 20x objective lens with the 10x eyepiece, what is the total magnification and how do you know?

Back

20x10=200 times total magnification. The objective lens magnifies 20 times, the eyepiece 10 times, and you multiply them for total magnification.

Front

What are the 7 characteristics of all living cells and organisms?

Back

grows, reproduces, need food (energy), removes waste, needs water, exchanges gas, responds to environment

Front

What are the functions of the water-expelling vesicle?

Back

To remove water continuously from a paramecium through the cell wall so it doesn't burst from having too much water inside it. It also removes some waste products.

Front

Why is it that a singe-celled paramecium can be called an organism, but one single cell of an elodea plant cannot be called an organism?

Back

While a single cell has all the characteristics of life, something is only considered an organism if it can live independently. Paramecia are free-living and elodea cells are not.

Front

What is the basic unit of life?

Back

A cell! All living things are made of one of more cells.

Front

Why might we say all life is aquatic?

Back

Cells are filled with water-based cytoplasm, so everything that happens inside a cell takes place in an aquatic environment.

Front

What structures do both eukaryotic and prokaryotic cell types have in common?

Back

A cell membrane, cytoplasm, ribosomes and genetic material.

Front

Which cell have cell walls, plant or animal cells?

Back

Plant cells