Biology Higher Unit 2 (Part 1)

This quiz is designed to test your knowledge on some of the topics within the Cell Metabolism and Survival section: The perceived difficulty of this quiz depends on the individual and their level of ability.

?
An enzyme A has a specific affinity to substrate of type B. However the biological catalyst has no effect on the substrate of type B due to the presence of a competitive inhibitor. What can increase the likelihood of the substrate of type B binding?
Increase in the concentration of the substrate of type B which will diminish the probability of a competitive inhibitor binding.
1 of 9
Assume a graph with the relative rate of reaction plotted on the Y axis and the increasing substrate concentration on the X axis. A line is plotted showing the relationship without the inhibitor. What is the limiting factor of the reaction rate?
The total number of enzymes present in the reaction.
2 of 9
The lock-and-key model is inaccurate because...
in reality the shape of the enzyme is altered slightly when the enzyme-substrate complex forms which causes the substrate to attatch to the active site even more tightly as illustrated by the induced fit model..
3 of 9
What type of inhibition involves the binding of an end product to an enzyme earlier in the metabolic pathway?
Feedback inhibition
4 of 9
Identify the most accurate description of the membrane structure from the given responses:
Amy : The membrane will contain ion channels which will allow the diffusion of ions and the entire membrane is selectively permeable with a double layer of phospholipid and pumps penetrating through the bilayer enabling active transport.
5 of 9
Where does the tricarboxylic acid cycle take place?
In the mitochondrial matrix.
6 of 9
For every adenosine triphosphate that is used for the active transport in the protein pump, how many sodium ions are exported from the inner membrane into the extracellular fluid?
Three
7 of 9
Cellular respiration is an example of...
an enzyme-controlled catabolic reaction.
8 of 9
Passive diffusion is the result of...
random motion resulting from the unpredictability of the solutes movement.
9 of 9

Other cards in this set

Card 2

Front

Assume a graph with the relative rate of reaction plotted on the Y axis and the increasing substrate concentration on the X axis. A line is plotted showing the relationship without the inhibitor. What is the limiting factor of the reaction rate?

Back

The total number of enzymes present in the reaction.

Card 3

Front

The lock-and-key model is inaccurate because...

Back

Preview of the front of card 3

Card 4

Front

What type of inhibition involves the binding of an end product to an enzyme earlier in the metabolic pathway?

Back

Preview of the front of card 4

Card 5

Front

Identify the most accurate description of the membrane structure from the given responses:

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Membrane Structure, Enzymes, ATP, Gene control resources »