One difference between cancer cells and normal cells is that cancer cells ________.

Biology

1 answer:

fredd [130]3 years ago

4 0

<span>continue to divide even when they are tightly packed together.
Hope this helps(;</span>

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The creation of new crust at the middle of mid-ocean ridges is also

Gennadij [26K]

Answer:

B.sea floor spreading

Explanation:

The creation of new crusts at the middle of the mid- ocean ridges is also sea floor spreading.

The process of sea floor spreading entails the creation of new crusts at the margin of the oceanic crusts.

Basaltic materials from the subsurface upwells to the surface.

They cool and solidifies to form new crusts. The old crust is moved behind and away from the margin. This way, sea floor is formed and it spreads in like manner.

At this margin sea floor is created and at a convergent margin, it is destroyed.

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2 years ago

When checking a child for non-life-threatening emergencies, which action would be appropriate?

bezimeni [28]

<span>It is usually the best practice to start checking from his or her lower limbs, toes and gradually progress upwards ,legs waist , stomach, chest, hands and the head lastly. In short, do it from the bottom to the top.</span>

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3 years ago

Describe the chemical components of DNA.

Slav-nsk [51]

DNA is composed of nucleotides, which are composed of three parts:

1. A five carbon carbohydrate (pentose)

Pentose is classified as a monosaccharide (simple carbohydrate), and its molecular formula is represented by $(CH_{2} O)n$ . They are water soluble molecules with sweet taste. Monosaccharides may have from three carbon atoms (trioses) to six (hexoses). In DNA is present pentose (5 carbon atoms)

2. A nitrogenous base

Nitrogenous bases are ring-shaped compounds that contain nitrogen in their molecular structure. They are classified into two groups: purines and pyrimidines

The purine bases are adenine (A) and guanine (G). They are larger and contain more than one ring in their structure,.

The pyrimidines, cytosine (C), uracil (U) and thymine (T), are smaller and composed of a single ring.

3. One or more phosphate groups

A phosphate consists of a trivalent anion that contains one phosphorus atom and four oxygen atoms. Its molecular formula is expressed by $(PO_{4} ^{-3})$ .