Biology 1 Final Exam

How are the functions of a carbohydrate and a lipid similar?

• Both lower the activation energy of reactions

• Both are a source of energy

• Both dissolve nutrients

• Both have instructions for making proteins

What kinds of molecules makeup proteins?

• sugars

• fatty acids

• amino acids

• nucleotides

Which cell organelle helps maintain homeostasis by controlling the transport of substances in and out of the cell?

• cell wall

• plasma membrane

• lysosomes

• mitochondria

Plant cells differ from animal cells in that they have both

• DNA and ribosomes

• cell membranes and vacuoles

• cell walls and chloroplasts

• a nucleus and cell membrane

Compared to prokaryotic cells, eukaryotic cells are much more

• large and complex

• large and simple

• small and simple

• small and complex

Which of these is found in both prokaryotic and eukaryotic cells?

• nucleus

• mitochondria

• chloroplasts

• ribosomes

The main function of chloroplasts is to

• make oxygen

• make proteins

• make glucose

• make carbon dioxide

Methionine is one amino acid. When added to other amino acids they all create a chain using polypeptide bonds. What is one amino acid called?

• polymer

• monomer

• single A

• monoacid

What are the functions of a nucleic acid?

• store & transfer genetic info
• store & create energy
• provide structure & energy for cells
  
• membrane structure and nutrient transfer

What is the function of an enzyme?

• enzymes break themselves into small pieces
• enzymes slow down chemical reactions
• enzymes speed up chemical reactions
• enzymes combine products to form reactants