A typical protein might have 100 amino acids linked together in a definite seque

Question

A typical protein might have 100 amino acids linked together in a definite sequence. How many different sequences are possible for a peptide of this length made up of any combinations of the 20 common natural amino acids?

Hint: For three link protein = 20x20x20 =203

PHY 112/114 Final: Concept Quiz seetion Fall 2016 Your Full Name T6 circuits 1) Which coeribination of options most accurate (A) A circuit form a closed coeductive kopiu seder fon a steady current be (B) High resistance kad to stronger electrical current. (D) current pa thaouah resistors one resistor up some current, kaving less for the other. Equivalent resistance of identical resisters in series uses for the same resistors in parallel. is peater than the equivalent TS: Magnetic induction In deep space (zero gravity) a powerful bar magnet is thrown through a tube made of a conducting but non- first. inable (like alumni or copper). The magnet is thrown in with its north pole entering the tube 2) Assume that the tube num in a fixed position by external forces. is being held Which combination of optiosas is most accurate? (A) The magnet's motion through the tube induces electric current to flow around the tube's surface. (B) Induced current's magnetic field initially has a north pole pointing opposite the to the north pole of the magnet. (C) The magnet slows down in part due to magnetic repulsion effects. (D) If the magnet is initially skw enough, it's poosible that it will eventually stop while passing through the tube. E) None of the above T4: Magnetic Fields 3) Which combination of optious is most accurate? (A) Magnetic fields are due to magnetically charged sources of matter. (B) Electric fields that change with time can create magnetic fields. (C) A positive charge must be attracted to the south pole of a bar magnet. (D) Realistic magnetic field lines always loop back on themselves. (E) None of the above. the diagram above, particles 1 and 2 are identical positively charged particles. Particle 1 moves rightward along the positive a-axis, while particle 2 up. The positive z-axis is directed toward the right. The positive axis (not drawn) comes moves waxis (not drawn) points up the page. 4) Which out of the page. The cornbination of options are most accurate? (A) The magnetic field that particle creates at particle 2s location is non-aero. (B) The magnetic field that Particle 2 creates at particle i's location points out of the page. (C) Particle i's magnetic field exerts a downward force on particle 2. (D) Particle 2 does not exert a force of equal magmitude and opposite direction on particle 1. (E) None of the above.

Explanation / Answer

100 amino acids linked together

So, 100 links here

Each of the 100 links can be filled with any ofthe 20 amino acids

So, 20*20*20* ..... 100 times

20^100 is the answer

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