BIO 1010 Practice Exam 1

All cells are enclosed by a membrane that regulates the passage of materials between the cell and its surroundings. And, every cell, at some stage in its life cycle contains DNA, the heritable material that directs the cell’s many activities. Two major kinds of cell types make up all living organisms on Earth, prokaryotic and eukaryotic. The cells of microorganisms classified as Eubacteria (Bacteria) and Archaea are _________

• non-living

• multicellular

• eukaryotic

• prokaryotic

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Eukaryotic life forms first appeared on Earth around ________ years ago.

• 100,000

• 17 billion

• 3.8 billion

• 1.5 billion

Chemoautotrophic organisms use inorganic compounds and initially convert them into organic ________.

• proteins

• carbohydrates

• DNA

• lipids

The term that describes a cell that contains a nucleus ________.

• viral

• prokaryotic

• eukaryotic

• photosynthetic

A population of organisms consists of individuals of the same species within a community. These populations undergo changes over time due to environmental factors. What is the process called that drives these changes?

• phylogenetic shifts

• natural selection

• genetic fingerprinting

• sustainability

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______ is a state in which the internal environment of an organism is being maintained within tolerable limits. It could be considered a state of biological balance.

• Metabolism

• Autotrophism

• Inheritance

• Homeostasis

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CO2 + H2O → G3P (carbohydrate) + O2 + H2O: A form of photoautotrophic metabolism, this overall reaction is represents ________.

• photosynthesis

• cellular respiration

• carbonic acid formation

• chemotrophic reduction

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Entropy is the ________.

• measure of disorder in a system

• process by which my coffee gets cold as it sits on the desktop while I take this very scary test

• overall energy loss as the universe continues to expand and cool

• chaos, the random movement and loss of usable energy

• I guess any of these would work as a response for this elusive term

The first word of a scientific name, such as Giardia lamblia, is the _______.

• genus name

• species name

• specific epithet

• phylum name

What best describes photosynthetic bacteria?

• thalli

• cyanobacteria

• methanogens

• eukaryotic algae

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