BLY 101 Exam 1 Study Guide Questions With Complete Answers Graded A+.
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Course
BLY 101
Institution
BLY 101
What are the characteristics of living things? - correct answer All living things are made up of cells, they have to be able to reproduce, growth and development, maintain and use energy, hereditary material (DNA), maintain homeostasis, respond to our ...
BLY 101 Exam 1 Study Guide
What are the characteristics of living things? - correct answer All living things are made up of cells, they have to be able to reproduce, growth and development, maintain and use energy, hereditary material (DNA), maintain homeostasis, respond to our environment (stimuli), must be able to evolve
How is all life dependent on energy from the sun? - correct answer Sunlight allows plants, algae and bacteria to use photosynthesis to convert carbon dioxide and water into organic
compounds like carbohydrates
List the levels of organization (simplest to most complex) - correct answer Atoms, Molecules, cell, organism, tissue, organ, organ system, species, population, community, ecosystem, biosphere
How does a producer obtain energy? What is an example of a producer - correct answer A producer makes its own food using energy and simple raw materials it obtains from nonbiological sources. A plant is an example of a producer and they use photosynthesis by using energy of sunlight to make sugars from carbon dioxide and water
How does a consumer obtain energy? What is an example? - correct answer A consumer obtains energy and nutrients by feeding on other organisms. Animals are examples of this and
so are decomposers which feed on the wastes or remains of other organisms
What are the different types of consumers? - correct answer omnivores, carnivores, herbivores and decomposers
What is homeostasis? - correct answer Process in which organisms keep their internal conditions within tolerable ranges by sensing and responding appropriately to change.
When looking at taxonomic designation, know that those who share more levels are more closely related (i.e. those in the same genus are more closely related than those who only share a kingdom) - correct answer What is an independent and dependent variable? - correct answer Independent variable- controlled by the person doing the experiment
Dependent variable- influenced by the independent variable
Why is a control group so important? - correct answer You would compare the
results from the experimental group with the results of the control group to see what happens when you change the variable you want to examine
What is sampling error? - correct answer A difference between results obtained from a subset, and results from the whole. Knowing how a sampling error can occur helps researchers design their experiments to minimize it
What is the atomic number? - correct answer The number of protons in an atom's nucleus
What is an isotope? - correct answer Atoms of the same element that have different numbers of neutrons
What is a radioisotope? - correct answer Isotope with an unstable nucleus.
Where are subatomic particles and their charge? - correct answer Protons are positively charged and are in the nucleus, neutrons are uncharged, and, in the nucleus, electrons are negatively charged and move at high speed around the nucleus
What are valence electrons and why are they important? - correct answer The
electrons that occupy the outer most shell of an atom are called valence electrons. They are important because they determine how an atom will react
what is an ion? - correct answer Atoms or molecules that carry a net charge because they have gained or lost electrons
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