Protein Structure And Function - Biological Science | Biology+

Course

Biology Science

Study Pack

Set 1: Biology and the Tree of Life

Set 2: Water and Carbon: the Chemical Basis of Life

Set 3: Protein Structure and Function

Set 4: Nucleic Acids and the Rna World

Set 5: An Introduction to Carbohydrates

Set 6: Lipids, Membranes, and the First Cells

Set 7: Inside the Cell

Set 8: Energy and Enzymes

Set 9: Cellular Respiration and Fermentation

Set 10: Photosynthesis

Set 11: Cellcell Interactions

Set 12: The Cell Cycle

Set 13: Meiosis

Set 14: Mendel and the Gene

Set 15: Dna and the Gene: Synthesis and Repair

Set 16: How Genes Work

Set 17: Transcription, Rna Processing, and Translation

Set 18: Control of Gene Expression in Bacteria

Set 19: Control of Gene Expression in Eukaryotes

Set 20: The Molecular Revolution: Biotechnology and Beyond

Set 21: Gene Structure and Development

Set 22: Evolution by Natural Selection

Set 23: Evolutionary Processes

Set 24: Speciation

Set 25: Phylogenies and the History of Life

Set 26: Bacteria and Archaea

Set 27: Protists

Set 28: Green Algae and Land Plants

Set 30: An Introduction to Animals

Set 31: Protostome Animals

Set 32: Deuterostome Animals

Set 33: Viruses

Set 34: Plant Form and Function

Set 35: Water and Sugar Transport in Plants

Set 36: Plant Nutrition

Set 37: Plant Sensory Systems, Signals, and Responses

Set 38: Plant Reproduction and Development

Set 39: Animal Form and Function

Set 40: Water and Electrolyte Balance in Animals

Set 41: Animal Nutrition

Set 42: Gas Exchange and Circulation

Set 43: Animal Nervous Systems

Set 44: Animal Sensory Systems

Set 45: Animal Movement

Set 46: Chemical Signals in Animals

Set 47: Animal Reproduction and Development

Set 48: The Immune System in Animals

Set 49: An Introduction to Ecology

Set 50: Behavioural Ecology

Set 51: Population Ecology

Set 52: Community Ecology

Set 53: Ecosystems and Global Ecology

Set 54: Biodiversity and Conservation Biology

Set 3 Protein Structure And Function

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Set 3 Protein Structure And Function

(Multiple Choice)

Free

In solution, why do hydrolysis reactions occur more readily than condensation reactions?

A) Hydrolysis raises G, or Gibbs free energy.
B) Hydrolysis increases entropy and is exothermic.
C) Hydrolysis decreases entropy and is exothermic.
D) Hydrolysis increases entropy and is endothermic.

Answer

(Multiple Choice)

Free

How does the structure of an amino acid enable it to play its most important roles in cells?

A) Because each amino acid contains a variety of functional groups, they can participate in a wide variety of chemical reactions.
B) It can serve a wide variety of functions in a cell, because it contains the atoms most commonly found in organisms C, H, N, and O).
C) The presence of carboxyl and amino groups gives it the ability to form peptide bonds, and its side chain gives it unique chemical properties.
D) Because both carboxyl and amino groups are present, polymerization is exergonic. In addition, the presence of a side chain makes the molecule water soluble.

Answer

(Multiple Choice)

Free

An amino acid has an R- group that does not have a positive or a negative charge but has an oxygen atom. Which of the following categories would best describe it?

A) acidic
B) basic
C) uncharged and polar
D) nonpolar

Answer