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Exam 1: Introduction to Biochemistry

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Question 31

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Which statement is true?

A) If DG is negative,then the rate of the reaction will be fast.
B) If DG is positive,then the rate of the reaction will be fast.
C) If DG is negative,then the rate of the reaction will be slow.
D) If DG is positive,then the rate of the reaction will be slow.
E) The reaction rate is independent of DG.

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Question 32

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The study of the energy changes during metabolic reactions is called ________.

A) bioinformatics
B) metabodynamics
C) thermometrics
D) bioenergetics
E) biological heat dynamics

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Question 33

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Absolute zero is equal to 0°C.

The Haworth projection of the ring form of a monosaccharide always shows a flat plane with one edge projecting out of the page (using thicker lines).

The endoplasmic reticulum is the major site of RNA synthesis and the site of assembly of ribosomes.

Bioinformatics has permitted rapid advances in our understanding of structural macromolecules from living cells.

Mr is the mass of a molecule relative to 1/12 the mass of an atom of the most common isotope of carbon.

In eukaryotic cells lysosomes are specialized digestive vesicles with a highly acidic interior.

Which elements account for more than 97% of the weight of most organisms?

Proteins in biological membranes may be

Ribosomes on the surface of rough endoplasmic reticulum are the site of ATP synthesis.

What is the correct order in which these key breakthroughs in biochemistry occurred? I. Watson and Crick DNA structure II. Crick Central dogma III. Avery,MacLeod and McCarty DNA work on Streptococcus IV. Widespread use of computers

Fermentation in the absence of cells demonstrated that metabolic processes were chemical in nature.

Molecules from living cells cannot be synthesized outside of living cells.

The only reason phages are not considered to be cells is because they do not contain a plasma membrane.

Enzymes are protein catalysts that form an intermediate with a substrate that fits into it.

Actin has been shown to be one of the most evolutionarily conserved proteins.It is present in all eukaryotic cells and frequently is the most abundant protein in the cell.

The process of cell division that occurs in the tissues is called mitosis.

Photosynthesis involves capturing energy from light that is then used to drive the formation of carbohydrates from carbon dioxide and water.

Crick referred to the flow of information from nucleic acid to protein as the Central Dogma.