
MEMBRANES & ENZYMES
Authored by Melissa Sheridan
Biology
11th Grade
NGSS covered
Used 8+ times

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45 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In living cells, enzymes act as catalysts, which may reduce the amount of activation energy required for a chemical reaction to occur. In the graphs below, pathway x is a solid line representing the uncatalyzed reaction. The dotted line shows the catalyzed reaction. Which graph best illustrates the changes in a reaction when the catalyst reduces the amount of energy required?
Tags
NGSS.HS-PS1-4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The diagram below shows the general structure of an amino acid. Which type of molecule is formed from amino acids?
lipids
proteins
carbohydrates
nucleic acids
Tags
NGSS.HS-LS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The human body maintains a temperature of around 98.6 degrees at all times. Enzymes are involved in almost every chemical reaction in the body. Which of the following describes the connection between these two statements?
Enzymes function best at a specific temperature.
The body needs to be warm to prevent hypothermia.
The body is kept relatively warm to prevent too much enzyme action.
There is no connection between the two statements.
Tags
NGSS.HS-LS1-3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What process would be used in the digestion of macromolecules we consume in our diet?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is structure A?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to enzymes at low temperature?
they denature
they die
they slow down; inactive
no change
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