Cell review for Bio Air exam

The following list represents characteristics of a living thing :

• made of cells, has lungs, can reproduce

• grows and develops, responds to surroundings, can move

• has similar chemicals, makes noises, made of cells

• made of cells, grows and develops, uses energy

Which of these do living things NOT need for a species to survive?

• DNA/RNA

• ability to respond to change

• ability to make a permanent home

• ability to reproduce

• ability to use energy

Which biomolecule is made of nucleotides and contain you DNA?

• Carbohydrate
• Lipids
• Protein
• Nucleic Acid

Which biomolecule has sugars and starches?

• Lipids
• Proteins
• Carbohydrates
• Nucleic Acid

Which biomolecule functions include enzymes­ which speeds the rate of chemical reactions, structural components in cells, mechanical functions in muscles and cytoskeleton, cell signaling, and immune response; provides structure and helps with chemical reactions 

• Protein
• Lipids
• Carbohydrate
• Nucleic Acid

Which biomolecule includes fats, such as triglycerides, oils, waxes, and steroids (cholesterol); insoluble in water; provides energy storage, insulation, part of cell membrane, and hormones 

• Nucleic Acid
• Lipids
• Carbohydrate
• Protein

Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.

• puncture

• denature

• double

• delete

What is the purpose of an enzyme?

• control how many reactions occur

• raise activation energy

• give permission for the reaction

• speed up chemical reactions

What is the optimal pH for this enzyme?

• 6

• 10

• 9

• 7

Prokaryotic cells do not have…….

• membrane bound organelles

• cell membrane

• DNA or RNA

• life