1. Cell Organelles and enzymes
EOCT Review Quiz #2
Cell Organelles and enzymes

2. A) enzymes. B) inhibitors. C) regulators. D) steroids.1
Reusable, complex proteins that promote chemical reactions within cells are called:
A) enzymes.
B) inhibitors.
C) regulators.
D) steroids.

3. A) chromosomes B) mitochondria C) lysosomes D) chloroplasts2
Which organelle, found in this plant cell, breaks down sugars for cellular energy?
A) chromosomes
B) mitochondria
C) lysosomes
D) chloroplasts

4. B) endoplasmic reticulum C) lysosomes D) ribosomes3
______ produce proteins by following coded instructions that come from the nucleus of the cell.
A) mitochondria
B) endoplasmic reticulum
C) lysosomes
D) ribosomes

5. B) endoplasmic reticulum C) lysosomes D) ribosomes4
In the diagram, the arrow is pointing to a small digestive organelle filled with enzymes called a
A) mitochondria
B) endoplasmic reticulum
C) lysosomes
D) ribosomes

6. B) endoplasmic reticulum C) mitochondria D) lysosome5
The black arrow in the picture above is pointing to an organelle that is packaging and shipping substances out of a cell. What is this organelle?
A) Golgi apparatus
B) endoplasmic reticulum
C) mitochondria
D) lysosome

7. A) pepsin B) trypsin C) amylase D) pepsin and amaylase 6
The graph illustrates the relative activity levels of three common digestive enzymes. Which enzyme is most active at a neutral pH of 7?
A) pepsin
B) trypsin
C) amylase
D) pepsin and amaylase

8. 7 Plant cells produce more oxygen bubbles than animal cells.
The table above shows the results of an experiment done by Juan and Cindy. Juan and Cindy placed hydrogen peroxide on several food samples and recorded the relative amount of fizz that each produced. The fizz was produced by oxygen bubbles released by the action of the enzyme catalase, which is found in almost every living cell. Which of these is a valid conclusion from their data?
Catalase Experiment
Food
Rate of fizzing (1-10)
Boiled potato
Raw potato 4
Cooked liver 1
Raw liver 10
Plant cells produce more oxygen bubbles than animal cells.
B) Boiled potato and cooked liver produced the most oxygen bubbles.
C) Raw liver produced the most oxygen bubbles, followed by raw potato.
D) Cooking the foods seems to increase the activity of the catalase enzyme.

9. B) storage of materials C) manufacture of proteins 8
The ribosome of a cell, is most responsible for what function?
production of ATP
B) storage of materials
C) manufacture of proteins
D) direction of all cellular activities

10. B) ribosomes; mitochondria C) mitochondria; ribosomes 9
Cardiac muscle cells undergo continuous aerobic respiration, are called the most energetic cells in the body, and therefore contain numerous ______. Because cardiac muscle cells also contain various protein fibers there must be an abundance of ______ present as well.
lysosomes; ribosomes
B) ribosomes; mitochondria
C) mitochondria; ribosomes
D) Golgi bodies; mitochondria.

11. increased rate of product formation 10
In an experiment to study the effect of proteases on proteins, what is the MOST LIKELY effect of a major change in pH?
increased rate of product formation
a change in the substrate concentration
the formation of new active sites of the enzyme
D) a change in shape of the active sites of the enzyme

12. Key A B D C