Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 60826
TLS Online TPP Program

#Question id: 289

Which of the following statements describes a covalent bond between Carbon and Hydrogen:

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The electrons are shared equally between the two atoms of the bond.

  2. The electrons of the bond are pulled closer to the nucleus of Hydrogen, because its outer shell electron is closer to its nucleus than the outer shell electrons of Carbon are to its nucleus.

  3. The electrons of the bond are pulled closer to the nucleus of Hydrogen, because its nucleus contains more protons than Carbon.

  4. The electrons of the bond are pulled slightly closer to the nucleus of Carbon, because although its outer shell electrons are located farther away from the protons of its nucleus, it contains more protons than Hydrogen.

More Questions
TLS Online TPP Program

#Question id: 32517

#Unit 1. Molecules and their Interaction Relevant to Biology

A typical mitochondrion can be thought of as a cylinder 1 µm in diameter and 2 µm in length. If the pH in the matrix is 7.8, how many protons are contained in the mitochondrial matrix?
TLS Online TPP Program

#Question id: 32518

#Unit 1. Molecules and their Interaction Relevant to Biology

When the antibiotic valinomycin is added to actively respiring mitochondria
TLS Online TPP Program

#Question id: 32519

#Unit 1. Molecules and their Interaction Relevant to Biology

Consider a rat hepatocytes containing mitochondria and all the cytosolic enzymes and fed with readiolablled compounds in cytosol as given, Which of the following statement is correct?
TLS Online TPP Program

#Question id: 32520

#Unit 1. Molecules and their Interaction Relevant to Biology


 Column 1 Column 2
 (a) the electron donor 1. NADH
 (b) the electron acceptor 2. E-FMN
 (c) the conjugate redox pair 3. NAD+/NADH 
 (d) the reducing agent
 (e) the oxidizing agent
Match the following 
TLS Online TPP Program

#Question id: 32521

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following

Column 1Column 2
 a. Abundant NADH and O2 , but cyanide added 1. all carriers become reduced
 b. Abundant NADH, but O2 exhausted 2. all carriers become oxidized. 
 c. Abundant O2 , but NADH exhausted 3. cytochrome c oxidized.
 d. Abundant NADH and O2
TLS Online TPP Program

#Question id: 32522

#Unit 1. Molecules and their Interaction Relevant to Biology

Why rotenone ingestion is lethal to some insect and fish species