Domain Eukarya contains animals, plants, protists, and fungi. - True
The process of keeping internal conditions constant is known as - Homeostasis
The levels of biological organization, in order from least complex to most complex, are: biosphere,
ecosystems, communities, populations, organisms, ...
The process of keeping internal conditions constant is known as - ✔✔Homeostasis
The levels of biological organization, in order from least complex to most complex, are: biosphere,
ecosystems, communities, populations, organisms, organ systems, organs, tissues, cells, atoms,
molecules. - ✔✔False
A new species has been discovered. Individuals of this species are multicellular eukaryotes that obtain
nutrients from decomposing organic matter. In which domain should this species be classified? -
✔✔domain Eukarya
Communities are more complex than populations. - ✔✔true
What is the lowest level of structure that can perform all activities required for life? - ✔✔cells
A tentative explanation of an observation is - ✔✔hypothesis
A collection of hypotheses that have been repeatedly tested without rejection is called a - ✔✔theory
The three domains of life are: - ✔✔Eukarya, Archaea, Bacteria
What is the difference between hypothesis and theory? - ✔✔A theory is much broader in scope than a
hypothesis and is generally supported by an accumulation of extensive and varied evidence.
Describe one theory that unifies biology as a science. - ✔✔The theory of evolution by natural selection
unifies biology as a science because it accounts for the unity and diversity of life on Earth. This theory
, states that there is an overproduction of offspring and competition for resources, and variation exists
among individual offspring. Unequal reproductive success (natural selection) among these offspring is
the mechanism of evolution.
What are the steps used in the scientific method? Use an example to illustrate the steps of the scientific
method. - ✔✔a)Observations, Question, Hypothesis, Prediction, Test, Revise hypothesis or Make
additional predictions and test them. Example: I observe that my flashlight does not work. I question
whether the batteries are dead. I hypothesize that the dead batteries are causing my flashlight to not
work properly. I predict that changing the batteries will cause the flashlight to work again. I test my
prediction by replacing the batteries with new ones. If the flashlight works, my hypothesis was correct. If
not, perhaps make a new hypothesis that the light bulb is dead and need replacement.
What is the function of nucleic acids? - ✔✔To store and transmit hereditary information.
Which of the following macromolecules function in energy storage? - ✔✔carbohydrates
Which subatomic particle has a negative charge? - ✔✔electron
Which of the following is NOT a component of an atom? - ✔✔positron
Which of the following is a single-stranded nucleic acid? - ✔✔RNA
An element is found to contain 33 electrons, 33 protons, and 22 neutrons. Which of the following is
true? - ✔✔Its atomic number is 33 and its atomic mass is 55.
Steroids belong to which class of macromolecules? - ✔✔lipids
Which of the following best summarizes the relationship between dehydration reactions and hydrolysis?
- ✔✔Dehydration reactions assemble polymers and hydrolysis breaks down polymers.
Oxygen forms two ______________ bonds with hydrogen atoms to form a water molecule. - ✔✔polar
covalent
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