Biology Final Review

A certain disease is caused by a recessive allele. In a cross between a heterozygous normal parent and a parent with the disease, what percentage of the offspring would be expected to have the disease?

• 25%

• 50%

• 75%

• 0%

In pea plants, tall plants (T) are dominant to short plants (t) and yellow peas (Y) are dominant to green peas (y). In a dihybrid cross between two individuals heterozygous for both traits, how many offspring would be expected to be short and yellow?

• 9/16

• 8/16

• 3/16

• 1/16

In pea plants, tall plants (T) are dominant to short plants (t) and yellow peas (Y) are dominant to green peas (y). How many possible combinations of genotypes can be found in the gametes produced by either individual?

• 4

• 2

• 6

• 8

If a cell contains 95% water and 5% dissolved substances and it is dropped into a solution of 70% water and 30% dissolved substances, what will happen to the cell?

• The cell will shrink because the dissolved solids will move out of the cell.

• The cell will swell because water will move into the cell.

• The cell size will not change size because water Andy dissolved solids typically don't move across the cell membrane.

• The cell will shrink because water will move out of the cell.

Which is true of meiosis?

• Meiosis occurs in all cells except reproductive cells.

• Meiosis is the first stage of mitosis.

• Meiosis occurs only in reproductive cells.

• Meiosis occurs in animal cells, but not in plants.

Which is an example of an organism that is heterotrophic, multicellular and eukaryotic?

• A tree

• A giraffe

• Bacteria

• Algae

Which organelle is the site of protein synthesis in a cell?

• Nucleus

• Mitichondria

• Ribosome

• Lysosome

If a cell contains no nucleus or membrane bound organelles, it must be a

• Prokaryotic cell

• Eukaryotic cell

• Plant Cell

• Animal Cell

Which is the best description of a cell produced at the end of meiosis.

• The cell will be genetically identical to the parent cell.

• The cell will have the same number of chromosomes, but a different combination of genes compared to the parent cell.

• The cell will have half the number of chromosomes and a different combination of genes as the parent cell.

• The cell will have twice the number of chromosomes and a different combination of genes as the parent cell.

Which substance is produced during photosynthesis and broken down during cellular respiration?

• Carbon Dioxide

• ATP

• Water

• Glucose