Digestion

Which of the following explains the excretion process of digestion?

• It is the process of breaking down food into simple substance our body can absorb.

• It is the elimination of undigested food that were not absorb by the body

• It Is the absorption and circulation of nutrients in the body.

• It is the process of supplying the cell with nutrients.

Fat digestion yields fatty acids and glycerol, whereas protein digestion yields amino acids. Both digestive processes . . .

• occur inside cells in most animals
• add a water molecule to break bonds
• require a low pH resulting from HCl production
• consume ATP

Tags

NGSS.MS-LS1-7

Which of the following organs is INCORRECTLY paired with its function?

• stomach - protein digestion
• large intestine - bile production
• small intestine - nutrient absorption
• pancreas - enzyme production

Tags

NGSS.MS-LS1-7

End products formed after the breakdown of lactose are _________

• Fructose and galactose

• Sucrose and glucose

• Glucose and fructose

• Glucose and Galactose

Nucleotidases are secreted by ________

• Pancreas

• Small intestine

• Stomach

• Large intestine

Which enzyme below is involved in the following chemical digestion process?
FATS---->FATTY ACIDS/GLYCEROL

• Lipase
• Trypsin
• Amylase
• Pepsin

Tags

NGSS.MS-LS1-7

Which enzyme below is involved in the following chemical digestion process?
PROTEINS---->POLYPEPTIDES

• Lipase
• Amylase
• Pepsin
• Maltase

As food travels through the digestive system, it is exposed to a variety of pH levels. The stomach has a pH of 2 due to the presence of hydrochloride acid (HCl), and the small intestine has a pH ranging from 7 to 9. HCl converts pepsinogen into pepsin, an enzyme that digests proteins in the stomach. Which of the following most likely happens to pepsin as it enters the small intestine?

•  It becomes inactive.
• It begins to replicate.
•  It's shape changes to engulf large proteins.
• It's activity increases to digest more proteins.

Babies do not have well developed digestive systems for breaking down proteins; therefore baby food is prepared after treatment with which enzyme? 

• protease
• lipase
• carbohydrase
• synthase

Tags

NGSS.MS-LS1-7

The optimum pH at which lipase is most efficient is

• 3

• 7

• 5

• 9