1- Cancers are more common in tissues with high rates of cell division. Based on

Question

1- Cancers are more common in tissues with high rates of cell division. Based on this information, which of the following tissues would be most likely to deveolp cancerous tumors.

Skin epithelium

2-

Use this information to help answer the following question:

When the suffix -clast is present, it refers to a cell that destroys - for example, a chondroclast is a cell that destroys cartilage. When the suffix -blast is present, it refers to a cell that builds - for example, a chondroblast is a cell that builds cartilage.

Now answer:

In the normal 30 year old skeleton, osteoclast activity is matched by osteoblast activity. What would happen if osteoclast activity was greater than osteoblast activity?

The bones would become weaker

3-

During transcription, the small and large ribosomal subunits combine to read the mRNA strand and synthesize an polypeptide (amino acid chain).

False

4-

Neurons are specialized for communication. They are capable of sending electrical signals due to the presence of many ion channels and pumps on the cell membrane that they constantly maintain or replace as needed. Which of the following would be NOT consistent with this information?

Explanation / Answer

1)

Answer is Skin epithelium, which  is maintained by active cell division within the stratum basale. Other three are differentiated cells with poor rate of cell division.

2)

preffix osteo-clast is present, it refers to a cell that destroys bone. suffix osteo-blast is present, it refers to a cell that builds bone

The bones would become weaker

3)

False. Read of the mRNA strand and synthesize of an polypeptide is known as process of translation. Transcription is synthesis of mRNA from template strand of DNA.

4)

Neurons are anucleate (they do not have nuclei).

The soma or "cell body" is the bulbous end of a neuron, containing the cell nucleus.

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