Unidad 2: Metabolismo Celular

Unidad 2: Metabolismo Celular

IB Biología NM

Fill in the Blank

¿Cuáles son los 4 elementos más comunes en los organismos vivos?

Open Ended

La imagen muestra 3 aminoácidos diferentes. Escribir qué parte de su estructura es idéntica.

Multiple Choice

Water shows strong cohesive properties. Which of the following can occur because of the cohesive properties of water?

• Water can be pulled up a plant through the xylem.

• Enzymes can react with their substrates in cells.

• Sweating cools the body on a hot day.

• Salt can dissolve in sea water.

Multiple Choice

Which molecules are monosaccharides?

• starch, glycogen, cellulose

• sucrose, maltose, lactose

• fructose, glucose, galactose

• glucose, lactose, cellulose

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Fill in the Blank

The process that occurs when fatty acids combine with glycerol to make a triglyceride is called:

Multiple Choice

Which movement occurs by osmosis?

• Oxygen from alveoli into the blood

• Water from a leaf into the atmosphere

• Water from soil to root

• Nitrate ions from soil to root

Multiple Choice

What links the pairs of complementary bases in a DNA double helix?

• Covalent bonds

• Hydrogen bonds

• Ionic bonds

• Peptide bonds

Multiple Choice

What property makes water an important coolant in the natural world?

• It is cohesive

• It requires much energy to evaporate.

• It has a lower temperature than blood.

• It has a low specific heat.

Fill in the Blank

Molecules that show monosaccharides:

Multiple Choice

What is the source of the oxygen released into the atmosphere in photosynthesis?

• Glucose

• Carbon dioxide

• Chlorophyll

• Water

Multiple Choice

What substance is produced from glucose during anaerobic respiration in all organisms?

• Carbon dioxide

• Ethanol

• Lactate

• Pyruvate

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Multiple Choice

What contributes to the structure of an enzyme?

• Sequence of bases linked by hydrogen bonds

• Sequence of substrates linked by condensation reactions

• Sequence of amino acids linked by peptide bonds

• Sequence of polypeptides linked by hydrolysis reactions

Multiple Choice

Which parts of this nucleotide would bond covalently with other nucleotides in a DNA double helix?

• 1 and 3 only

• 1 and 2 only

• 2 and 3 only

• 1, 2 and 3

Open Ended

Which graph shows the effect of increasing substrate concentration on enzyme activity? Explain

Multiple Choice

What process forms triglycerides?

• Evaporation

• Condensation

• Hydrolysis

• Glycolysis

Multiple Choice

How much energy is stored in 1 kg of body fat compared to 1 kg of glycogen?

• Half as much

• Same amount

• Twice as much

• One tenth as much