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Bio 121 Exam 1 Questions and 100% Correct Answers
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What are the characteristics of life? organization, metabolism, responsiveness, growth, development, reproduction What are the levels of biological organization molecules-Organelles-cells-tissue-organs and organ systems-organisms-populations-communities-Ecosystems-The biosphere Biotic Vs. Abiotic...

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  • August 13, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • bio 121 exam 1 questions and 100 correct answers
  • what are the characteristics of life organizatio
  • what are the levels of biological organization mo

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Bio 121 Exam 1 Questions and 100%
Correct Answers
What are the characteristics of life? ✅organization, metabolism, responsiveness,
growth, development, reproduction

What are the levels of biological organization ✅molecules-Organelles-cells-tissue-
organs and organ systems-organisms-populations-communities-Ecosystems-The
biosphere

Biotic Vs. Abiotic ✅Biotic: living ex. animals, plants, bacteria
Abiotic: nonliving ex. rock, water, air

What is emergent property? ✅They result from the arrangement and interaction of
parts within a system

What are two characteristics that all cells share? ✅All cells are living cells and can only
come from preexisting cells, regulate its internal environment, take in/use energy,
respond to enivorment

What are three structural differences between prokaryotic and eukaryotic cells?
✅Eukaryotic cells- has nucleus, larger/ "more complex", membrane bond organelles
Prokaryotic cells- No nucleus, smaller/"Simpler", no membrane bond organelles

What is systems biology? ✅an attempt to model behavior by analyzing interactions

How do living organisms interact with their environment? ✅By adaption

Be able to distinguish between a producer, consumer and decomposer ✅Producers
are living things such as plants and bacteria that go through photosynthesis and
produce their own source of energy that gets transfered to the consumer that eats it

What are the two major processes that are part of the dynamics of ecosystems? ✅The
recycling of chemical nutrients and the flow of energy

What is DNA? What is genes? ✅DNA is genetic coding that provides master
instructions for all of cells functions

Genes are specific sequences that encode precise information in units of inheritance

Explain what is meant in the unity and diversity of life? ✅it means that plants and
animals very different from each other but they can also have very similar

, characteristics. They can work together in harmony but can become predator and prey
at the same time

What is a genome? ✅a haploid set of chromosomes in a gene or genetic material
present in a cell or organism

What is taxonomy? ✅the branch of science concerned with classification, especially of
organisms; systematics.

What are the three domains of life? Which kingdoms are included in domain eukarya?
✅There is bacteria, archea and eukarya
Eukarya consists of protists, plantae, fungi and animalia

What is evolution? What is natural selection? ✅Change over time

Survival of the fittest

natural selection was inferred by connecting two observations. What are these
observations? What are two inferences Darwin drew? ✅Observation: individual
variation -> inference: unequal reproductive success

Observation: over production of offspring -> inference: accumulation of favorable traits

What is a hypothesis? ✅A hypothesis is a statement that can be tested

What is the difference between qualitative ve and quantitative data? ✅Quantative data
has more to go down with the process of gathering information like measurements and
qualitative has to do with observations

What is a theory? ✅well-tested explanation that unifies a broad range of observations

What is a controlled experiment? ✅a test of the effect of a single variable by changing
it while keeping all other variables the same

What is an independent variable? What is a dependent variable? What are controls?
(Negative and postive) ✅Independent- manipulated
Dependent- out come of independent
Control- constant

What is artificial selection? ✅selective breeding of plants and animals to promote the
occurrence of desirable traits in offspring

What is the goal of science? What is the goal of technology? ✅To investigate and
understand the natural world

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