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Unit 1 Biology Basics
Unit 1 Biology Basics
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Questions
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Answers
1
States whether or not the hypothesis was supported
Conclusion
Constant
Hypothesis
Independent Variable
2
Which of the following makes up a molecule of water?
one atom of hydrogen and two atoms of oxygen
one atom of sodium and one atom of chlorine
two atoms of hydrogen and one atom of oxygen
one atom of hydrogen and one atom of oxygen
3
The process by which organisms keep everything inside their bodies within certain limits is called
metabolism.
evolution.
homeostasis.
photosynthesis.
4
DNA and RNA are examples of which macromolecule group?
Carbs
proteins
lipids
nucleic acids
5
Which of the following is NOT a function of proteins?
move substances into or out of cells
help to fight disease
controls the rate of reactions
store and transmit genetic information
6
Which property of water provides the cooling effect of sweating?
high heat of vaporization
surface tension
cohesiveness
high heat capacity
7
Starch and sugar are examples of which macromolecule group?
Lipids
Proteins
Nucleic Acids
Carbs
8
Life can exist under frozen surfaces in polar seas because…
water is a terrific solvent.
water has a high specific heat.
water has a high surface tension.
water is less dense as a solid.
9
The element is considered the main element due to its ability to form stable bonds with many elements, including itself
Carbon
Phosphorus
Hydrogen
Nitrogen
10
Variable that you manipulate during an experiment
Dependent Variable
Independent Variable
Constant
Conclusion
11
Water molecules move farther apart when water freezes. Which of the following is a consequence of this property?
Only a limited amount of solute can be dissolved in a sample of water.
Objects with a higher density than water can be observed floating on water.
The water in lakes, ponds and puddles freezes from top down.
Water is considered to be a universal solvent.
12
A covalent bond is formed as the result of
transferring electrons.
sharing protons.
transferring protons.
sharing electrons.
13
The variable that does not change during an experiment
Dependent Variable
Constant
Hypothesis
Conclusion
14
Water has high surface tension. What property of water allows an insect to walk on water?
Ionic Bonds
Nonpolar Covalent Bonds
Cohesion
Adhesion
15
15. The basic unit of length in the metric system is the
liter
meter
yard
gram
16
Amino acid is to protein as
fat is to lipid.
DNA is to RNA.
sugar is to fat.
monosaccharide is to carbohydrate.
17
When placed in water, oil does not dissolve and stays separate. This means oil is _____ and .
hydrophobic and polar
hydrophilic and nonpolar
hydrophobic and nonpolar
hydrophilic and polar
18
Which of the following statements about enzymes is NOT true?
The shape of an enzyme allows it to do its job.
Enzymes work best at a specified pH.
Enzymes are proteins.
All enzymes have the same shape as their substrates.
19
The energy needed to get a reaction started is the:
adhesion energy.
cohesion energy.
activation energy.
chemical energy.
