Cells and Tissues

Only available on StudyMode
  • Download(s) : 677
  • Published : February 21, 2012
Open Document
Text Preview
Cells and Tissues

1.
Which of the following is NOT a membranous organelle?
a. Lysosomes

b. Peroxisomes

c. Mitochondria

d. Ribosomes

e. Endoplasmic reticulum
Answer: d

2.
Which organelle contains digestive enzymes?

a. Rough endoplasmic reticulum

b. Smooth endoplasmic reticulum

c. Lysosome

d. Golgi apparatus

e. Mitochondria
Answer: c
Lysosomes are membrane bound sacs of digestive enzymes. They are nicknamed "suicide sacs".

3.
Which organelle is considered the powerhouse of the cell?
 a. Rough endoplasmic reticulum

b. Smooth endoplasmic reticulum

c. Lysosome

d. Golgi apparatus

e. Mitochondria
Answer: e
The mitochondria is the site of ATP production for the cell. ATP is the energy currency of the cell. Mitochondria are nicknamed, the "powerhouse".

4.
What structure is at the base of cilia?

a. Ribosomes

b. Peroxisome

c. Microfilaments

d. Centrioles

e. Nucleoli
Answer: d
The ribosomes are the site of protein synthesis. Peroxisomes contain enzymes for detoxification. One of the enzymes within peroxisomes is catalase. Catalase is involved in the breakdown of hydrogen peroxide. Microfilaments are made of actin. They form the cells cytoskeleton. Centrioles are composed of microtubules. Centrioles are at the base of cilia and flagella. They are also involved with cell division. Ribosomes are assembled in the nucleoli. The nucleolus is a spherical area within the cell nucleus.

5.
Which of the following is NOT considered an inclusion?
 a. Pigment

b. Glycogen

c. Lipid

d. Secretory granules

e. Mitochondria
Answer: e
Mitochondria is an organelle. Pigment, glycogen, lipid, and secretory granules are all considered inclusions.

6.
Collectively, what is the cytoplasm and nucleus called?
 a. Plasmalemma

b. Glycocalyx

c. Protoplasm

d. Cristae

e. Ground substance
Answer: c
Collectively, the cytoplasm and nucleus form the protoplasm of a cell.

7.
How thick is the plasma membrane?

a. 8-10 angstroms
...
tracking img