Biology Unit 1 Review - Hayward Johnson | Biblioteka

1

Why are enzymes essential for digestion?

They help speed up chemical reactions

They help slow down chemical reactions

They increase the amount of energy needed to start the reaction

They reduce the amount of energy needed to start the reaction

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Which enzyme is produced by salivary glands and breaks down lipids?

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Which enzyme is produced by salivary glands and breaks down carbohydrates?

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Which enzyme is produced in the stomach and breaks down proteins?

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What organ is responsible for breaking down proteins, glycogen, & starch?

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What enzyme is produced in the small intestine and breaks down lactose?

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What is true about the graph?

Trypsin works best at a neutral pH

Pepsin works best at an acidic pH

Amylase works best at a basic pH

Trypsin has an optimum pH of 9

Pepsin has an optimum pH of 11

Amylase has an optimum pH of 7

pH has no effect on enzyme activity

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What is this model called?

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Which of the following are true?

The substrate fits into the active site

The enzyme changes from beginning to end

The enzyme can be reused

A reaction occurs when the substrate is bound to the enzyme

The substrate remains unchanged

Use the whiteboard below to compare the 4 major macromolecules. Include information like structure, function, sources, elements, & monomer/polymer. You should have at least 5 characteristics listed under each macromolecule.

Complete the two quizlet matching sets below, with the goal of completing them in 10 seconds or less.

Label each cell on the whiteboard using the following terms (some may be used more than once): nucleus, nucleolus, nuclear membrane, cytoplasm, Golgi body, smooth ER, rough ER, lysosome, ribosome, chloroplast, mitochondria, cell membrane, cell wall, flagellum, cilia, centriole, capsule, vacuole, nucleoid

1

Which choice below correctly identifies each solution?

a)hypertonic b)hypotonic c)isotonic

a)hypotonic b)isotonic c)hypertonic

a)isotonic b)hypertonic c)hypotonic

a)hypotonic b)hypertonic c)isotonic

a)isotonic b)hypotonic c)hypertonic

Use the whiteboard below to label the hydrophilic phosphate head & hydrophobic lipid tail and explain how this structure helps the phospholipid serve as a component of the cell membrane.

1

What structural component serves as a means of transport across the cell membrane?

carbohydrate

nucleic acid

protein

cholesterol