BIO 110 Exam #1 (Tutorials #2-#6)
Questions with Verified Answers
Metacognition - ANSWERSawareness and understanding of one's own thought
processes
years since the earth was formed? - ANSWERS4.5 billion years
Viruses - ANSWERSarticles that contain a collection of genetic code, either DNA or
RNA, surrounded by a protein coat
not able to reproduce on their own requiring a living host cell for reproduction
do not have their own metabolism - they rely on their hosts' metabolic abilities
they are generally not considered "living"
What are the 7 characteristics of life? - ANSWERS1. Organized
2. maintain homeostasis
3. use energy
4. Evolutionary Adaptation
5. Response to the Environment
6. Reproduction
7. Growth and Development
How many described species on earth? How many are estimated? - ANSWERS1.5
million; 2 billion
All species can be tracked back to the most recent common ancestor how many years
ago? - ANSWERS3.5 billion
natural selection - ANSWERSprocess by which a population becomes better adapted to
its' environment over time
natural selection can only cause organisms to adapt to the environmental conditions at
that time. If the environment changes, then the selective pressures may change, and
different genetic traits may be favored
For natural selection to act upon a population, there must be certain conditions: -
ANSWERS1. there must be an overproduction of individuals that results in competition
for resources and a struggle for existence
2. variation within the population - a population of identical individuals cannot be acted
upon by natural selection
Questions with Verified Answers
Metacognition - ANSWERSawareness and understanding of one's own thought
processes
years since the earth was formed? - ANSWERS4.5 billion years
Viruses - ANSWERSarticles that contain a collection of genetic code, either DNA or
RNA, surrounded by a protein coat
not able to reproduce on their own requiring a living host cell for reproduction
do not have their own metabolism - they rely on their hosts' metabolic abilities
they are generally not considered "living"
What are the 7 characteristics of life? - ANSWERS1. Organized
2. maintain homeostasis
3. use energy
4. Evolutionary Adaptation
5. Response to the Environment
6. Reproduction
7. Growth and Development
How many described species on earth? How many are estimated? - ANSWERS1.5
million; 2 billion
All species can be tracked back to the most recent common ancestor how many years
ago? - ANSWERS3.5 billion
natural selection - ANSWERSprocess by which a population becomes better adapted to
its' environment over time
natural selection can only cause organisms to adapt to the environmental conditions at
that time. If the environment changes, then the selective pressures may change, and
different genetic traits may be favored
For natural selection to act upon a population, there must be certain conditions: -
ANSWERS1. there must be an overproduction of individuals that results in competition
for resources and a struggle for existence
2. variation within the population - a population of identical individuals cannot be acted
upon by natural selection
