Cell Unit

Which cell structure contains genetic information needed for protein synthesis?

• 1

• 2

• 3

• 4

The function of which cell part is most similar to that of the human excretory system (get rid off materials or waste products from cell)?

• A

• B

• C

• D

Which statement concerning the functioning of cells is correct?

• Mitochondria transfer energy from organic compounds to form ATP molecules.

• Vacuoles are the sites of DNA synthesis.

• The nucleus stores genes that will later be removed from the cell.

• The cell membrane prevents the diffusion of all poisons into a cell from its environment.

The removal of mitochondria from a typical animal cell would have an immediate effect on the cell's production of

• DNA

• Oxygen

• ATP

• Glucose

Which graph below best represents the relationship between the relative number of nuclei, genes, and chromosomes in a typical human cell?

• 
• 
• 
• 

Cell structure X is a

• Ribosome

• Vacuole

• Cell membrane

• Mitochondrion

Which statement concerning the structures within this cell is accurate?

• Structure 1 is a chloroplast that carries out photosynthesis.

• Structure 2 is a vacuole that contains DNA.

• Structure 3 is a mitochondrion, where respiration takes place.

• Structure 4 is the cell membrane, which provides rigid support for the cell.

Mitochondria provide ribosomes with

• ATP for protein synthesis

• Amino acids for protein synthesis

• Oxygen for respiration

• Carbon dioxide for the production of sugars
  

In single-celled organisms, materials are stored primarily in

• Ribosomes

• Mitochondrion

• Nuclei

• Vacuoles

The nucleus contains molecules of A, which

• Recycle waste products

• Remove water from the cell

• Store hereditary information

• Regulate the pH of cytoplasm