BIO150 Chapter 1

BIO150 Chapter 1

University

30 Qs

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BIO150 Chapter 1

BIO150 Chapter 1

Assessment

Quiz

Biology

University

Medium

NGSS
HS-PS1-5, HS-LS1-7, HS-LS2-4

Standards-aligned

Created by

Ahmad Khazali

Used 290+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

0 sec • 1 pt

A small amount of enzymes can act on a large amount of substrate because

enzymes do not change after a reaction and can be used again.

a little enzyme can supply enough energy to carry out a reaction.

as the reaction is going on, more enzymes are produced.

enzymes act in a all or none situation.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not true about enzymes?

Enzymes are denatured at temperatures above 60oC.

Enzymes can catalyse chemical reactions.

All enzymes react optimally at a neutral pH.

Reaction of enzymes is reversible.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The diagram shows the mechanism of enzyme action.

What does P represent?

Enzyme

Substrate

Enzyme-substrate complex

Products of the reaction

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Figure 1 shows the structure of enzyme N change to structure R when being heat above 60oC through the process P. Name P?

hydrolysis

deamination

denaturation

condensation

Tags

NGSS.HS-PS1-5

5.

MULTIPLE CHOICE QUESTION

0 sec • 1 pt

Media Image

Graph in figure shows the effects of temperature on the rate of an enzyme- catalysed-reaction. Which of the following statement is correct?

When the temperatures is low, the enzyme-catalyzed reaction is high.

When the temperatures is high, the rate of reaction is not accelerated.

When the temperatures is optimum, the enzyme catalyses the reaction at the maximum rate.

When the temperatures is beyond the optimum, the enzyme catalyses the reaction is increase

6.

MULTIPLE CHOICE QUESTION

0 sec • 1 pt

Media Image

Table shows the result obtained from the experiment to investigate the temperature on the activity of amylase.What inference can be made from the above observations?

In test tube Q, rate of reaction is decreasing.

In test tube R, rate of reaction is optimum

In test tube S, rate of reaction is increasing

In test tube T, rate of reaction is accelerated

Tags

NGSS.HS-LS2-4

7.

MULTIPLE CHOICE QUESTION

0 sec • 1 pt

Media Image

Figure shows the relationship between the rate of reaction and substrate concentration.

When the concentration of substrate increase more product is produced because more subtrate molecules are available to bind the active sites of the enzymes

The rate of reaction increases because there are less chances of collisions between the substrate molecules and the enzymes molecules

When the substrate concentration increases, the speed of reaction also increases because less substrate binds the active of the enzymes

The rate of reaction is directly proportional the substrate concentrate continuously without limiting factor.

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