The Molecule Cytochrome C Supports the Theory of Evolution as Biochemical

question 34

Multiple Choice

The molecule cytochrome c supports the theory of evolution as biochemical evidence. Which of the following is not part of that evidence?

• A) Cytochrome c has evolved multiple times among many species.
• B) Cytochrome c has the same function in all organisms.
• C) The genetic code for cytochrome c differs among species.
• D) Cytochrome c is found in a variety of organisms from yeast to humans.
• E) Cytochrome c plays a role critical to survival. Cytochrome c sequence comparisons show evolution in that this molecule has a common function important for cellular metabolism and it is present in many species but is variable among them. This pattern illustrates that cytochrome c evolved once in an ancestor and was passed to all of its descendents with modification through time unique to each species.

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Definitions:

Photoautotrophs

Organisms that perform photosynthesis to synthesize nutrients from carbon dioxide and water using sunlight.

Photosystem I

A component of the photosynthetic system found in the chloroplasts of plants and algae that captures light energy and converts it into chemical energy during the process of photosynthesis.

Chlorophyll

A green pigment found in the chloroplasts of plants, algae, and some bacteria, crucial for photosynthesis as it absorbs light energy to produce sugar.

Absorption Peak

The wavelength or region of the electromagnetic spectrum where a substance absorbs the most light, often used in spectroscopy for identification.