Question

A drug is developed that blocks angiogenesis. It will have the following effect(s) on cancer cells

Answer 1

Is this a complete question..?

Answer 2

OK, dolcevita, it helps if you post the options. It also helps if you also post what specifically about the problem you don't understand.

The efficiency of anti-angiogenesis drugs in treating solid body tumors (i.e., the kinds of cancers which consist of lumps of cells as opposed to diffuse cancers like leukemia) is actually an incompletely understood and contentious subject.

The cells in these tumors need oxygen and metabolites from the blood to grow and it has been shown that reducing the oxygen and nutrient supply to these tumors by decreasing blood flow decreases their overall cell proliferation rate. For that reason, anti-angiogensis drugs have long been given to cancer patients to slow the rate of tumor growth.

The problem is, the patients who are given these drugs rarely survive longer than patients with the same cancers who are not given the treatment. In fact, many of them fare worse.

Why is this?

As it turns out, starving cancer cells of oxygen and nutrients by blocking their blood flow actually activates metastasic signalling pathways within the tumor itself: it senses that it has been challenged or reached the 'carrying capacity' of its host tissue early, so it focuses its energy not on growing itself but on seeding itself elsewhere in the body.

Whoever came up with this question probably has no idea about this. The people who write multiple choice questions are usually five to ten years behind actual scientific thought. And as you haven't provided us with any multiple choice options, I don't know what the right answer is but I hope you find this helpful.