Question

Which of the following is true about tumors

Select one:

a. Malignant tumors can release cancerous cells in the bloodstream. These cells are called metastases.

b. Tumors release angiogenic signals that attract blood vessels

c. Tumors can sometimes be fought via immunotherapy

d. Cancer is often the result of a single mutation

e. All of the above are correct, except d

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Which of the following proteins is not part of the replisome?

Select one:

a. Primase

b. Helicase

c. Beta clamps

d. DNA ligase

e. Polymerase 3

f. Cyclin dependent kinases

Answer 1

1. Last option

Cancer is often a result of more than one mutations.

First option is correct because malignant tumor has the ability to move from one location to another inside the body and this property is called as metastasis.

Second option is correct because of tumor cells can form blood vessels in it and this is called as angiogenesis. From the new blood vessels in able to absorb nutrients.

Third option is correct because immunotherapy can be used to to treat cancer.

2. F

Replisome is a complex of DNA and replication enzymes.

Please rate high.