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DNA is made of two chains of nucleotides. Which type of bonds hold the chains together?

hydrogen bonds

covalent bonds

ionic bonds

polar covalent bonds

Is-0800. c national response framework an introduction answers

The ruler who worked hard to introduce Western social customs into Russia was a. Peter the Great. b. Catherine the Great. c. Michael Romanov. d. Ivan the Great.

Albinism is an autosomal (not sex-linked) recessive trait. A man and woman are both of normal pigmentation, but both have one parent who is albino (without melanin pigmentation).

Which mechanism requires energy? a) diffusion of oxygen into red blood cell b) diffusion of ions through a potassium channel c) osmosis d) exocytosis

47 year old woman comes to the physician because of right wrist pain that began 2 days ago when she fell on her outstretched arm while playing tennis nbme form 1 family medicine

Why is forecasting human population growth more difficult than forecasting population growth in other animals?

You and your physiology instructor are trapped in an overturned ship. To escape, you must swim underwater a long distance. You tell your instructor it would be a good idea to hyperventilate before making the escape attempt.

Thermal vents are found at the bottom of the ocean in the benthic zone.

What is a transitional fossil? what is a transitional fossil? a transitional fossil is in the middle of a direct lineage stretching from ancient forms to organisms alive today. transitional fossils were poorly adapted to their environments.

Explain the processes involving mitosis