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BIO 104 Exam 1 with complete solutions
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BIO 104 Exam 1 with complete solutions
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BIO 104 Exam 1 with complete solutionscell - Answer -The smallest independently functioning unit of an organism is a(an):
organ - Answer -A collection of similar tissues that perform a specific function is an:
1.
chemical
2.
cellular
3.
tissue
4.
organ
5.
organ system
6.
organization - Answer -list the levels of organization within an organism
The sum of all chemical reactions in an organism - Answer -Select the statement that
best describes metabolism
Ellen loves ATP! Why? Because ATP is so important. Why is ATP important? - Answer -
ATP provides stored chemical energy for the body to use in a controlled manner
A suggested and testable (test using experimentation) explanation for a biological
process or event is called a: - Answer -Hypothesis
Which of the following statements correct describes a double-blind experiment? -
Answer -Neither the test subjects or the researchers in direct contact with them know
who is in the experimental group and who is in the control group
Which of the following bonds requires sharing bonds? - Answer -Covalent
Ellen loves water! Which of the following bonds do oxygen and hydrogen use when they
form a water molecule? - Answer -Polar Covalent
section 2.2.2 beginning on page 31 discusses the important role of electrons in forming
chemical bonds. Remember that the first shell needs 2 electrons to be satisfied, and
that the next shell(s) need 8 electrons to be satisfied--the Octet Rule. Select the correct
, answer from possible bonding possibilities. - Answer -Hydrogen has only one electron in
it's outer shell, so two Hydrogens will bond with Oxygen (only 6 electrons in it's outer
shell) to form water.
Please read sections 2.3.1 and 2.3.2 beginning on page 37. Select the correct
statement about water and it's amazing properties. - Answer -Water molecules have a
polar covalent bond, this sets up a positive partial charge on the end with two
hydrogens and a partial negative charge on the end with oxygen. These partial charges
allow water molecules to "cling" to each other through hydrogen bonds. This structure
allows for all water's amazing properties and for life as we know it.
Select the correct statement about pH. - Answer -pH is the measure of a solutions
acidity (Acids) or alkalinity (Bases). Acids have very high hydrogen ion concentrations
and Bases have very low hydrogen ion concentrations.
are solutions like orange juice and lemon juice acidic? - Answer -yes, they are acidic
Which of the following are mono-saccharides? - Answer -Glucose, Galactose and
Fructose are monosaccharides, you can see them on Figure 2.13
Cellulose, Glycogen, Starch and Chitin are examples of polysaccharides. You can see
them on Figure 4.14 What is the difference between these polysaccharides? - Answer -
All are made up of joining monosaccharides together into long chains. Joining the
monosaccharides uses the dehydration synthesis reaction.
Select the correct statement about these important molecules. - Answer -Lipids are
hydrophobic. Lipids can be used for long-term energy storage, insulation, and
importantly are the building blocks for hormones and cell membranes.
Select the correct statements about proteins - Answer -Proteins are the most abundant
of biological molecules and have the most diverse range of functions.
Proteins can function as hormones, enzymes, and even toxins.
Proteins are made up of amino acids.
Select the false statement about nucleic acids - Answer -DNA and RNA are made up of
amino acids
Why is carbon the "foundation" element for biological molecules? Select the correct
statement. - Answer -Carbon has only four electrons in it's outer shell, that means that
Carbon can form 4 covalent bonds with other atoms. Methane is the simplest molecule,
with one carbon and 4 hydrogens. Carbon creates diversity of molecules because it can
also bond with Oxygen, Nitrogen and Phosphorus.
select the correct statements about prokaryotic and eukaryotic cells - Answer -
Prokaryotic cells do not have a true nucleus, while Eukaryotic cells do.
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