1. What are some biological functions of small peptides?
Small peptides, containing two to several dozen amino acid residues, can have
marked physiological effects in organisms.
Oxytocin induces labor in pregnant women and controls contraction of
1. The synthesis of ATP in mitochondria is driven by a proton or pH gradient.
2. Fats and amino acids are better sources of energy than sugars, since their
catabolism takes place directly in the mitochondria.
Why do enzymes bind to substrates?
Enzymes and substrates are attracted to one another via noncovalent interactions.
The active site has amino acids in specific orientations in which the substrate can
bind, thus, forming the enzyme substrate complex. The
How is replication tied to cell division?
Replication is tied to cell division by several proteins including the ORC, replication
activator proteins, and replication licensing factors. The process is controlled by cyclins,
which are produced in the
1. The synthesis of ATP in mitochondria is driven by a proton or pH
2. Fats and amino acids are better sources of energy than sugars, since
their catabolism takes place directly in the mitochondria.
2. The products of saponification of a triglyceride include all of these,
Long chain fatty alcohols.
1. Which of the following figures represents the Haworth projection of the carbohydrate shown?
2. The definition of a carbohydrate requires that the smallest carbohydrate must have this many
3. Which of t
1. Enzyme catalysts are more effective than inorganic and other catalysts because:
They lower the activation energy.
They hold substrates in the proper position to enhance the reaction rate.
They are specific for certain subs
Short Answer Chapter 1
1. How does biochemistry describe life processes?
a. Biochem is a multidisipinary field that asks questions about the molecular nature of life
b. Many chemical reactions take place simultaneously in living cells
2. Can a
1. Phosphorolysis reactions involve the following processes:
Adding phosphate groups.
Splitting polymers and adding phosphate groups.
All of these processes are involved.
2. Starting from glucose and UT