Biology 1320- Texas state university Exam 1
Practice Questions and Answers
What are the 5 properties of Life? - Answer️️ -a. Ability to process energy
b. Ability to reproduce
c. Carries its own instruction manual
d. Life is complex
e. Life responds to stimuli
5. • Know what an isotope ...
Biology 1320 :Texas State University
Biology 1320- Texas state university Exam 1
Practice Questions and Answers
What are the 5 properties of Life? - Answer✔️✔️-a. Ability to process energy
b. Ability to reproduce
c. Carries its own instruction manual
d. Life is complex
e. Life responds to stimuli
5. • Know what an isotope is, and the difference between a stable isotope
and a radioisotope. - Answer✔️✔️-a. Isotopes have the same number of
protons and electrons but different numbers of neutrons
b. Stable, chemically the same as every other atom of the element, just with
a different number of neutrons
c. Radioisotope- Emitting radiation that changes its chemical structure
7. Know the difference between a generic atom and an ion. - Answer✔️✔️-a.
An ion is an atom or molecule with a net electric charge due to the loss or
gain of one or more electrons.
What is meant by the principle of emergent properties. - Answer✔️✔️-a. it's
the property where living things become more and more complex as it goes
from cellular level (exp humans are made of cells
Biology 1320 :Texas State University
b. It's based on the concept that "the whole is greater than the composition
of its parts."
13. •Know the three major types of chemical bonding (ICH). Know what
holds atoms together with each type of bonding. - Answer✔️✔️-a. Ionic
Bonds
i.One positive atom and one negative atom. Opposite charges attract the
atoms together.
b. Hydrogen bonds
i.Hydrogen of one molecule is attracted to oxygen of another
ii. A to T
iii. C to G
c. Covalent bonds
i.They are trying to attract electrons, the electrons are shared tightly
between the atoms. The force of attraction on the electrons is what holds
them together
17. If I tell you that a compound is made up of only carbon and hydrogen,
know why it will not dissolve in water. - Answer✔️✔️-a. Because they are
non-polar. They do not have any electrons to share to bond with the water
18. • Know about acids and bases and what is meant by pH. Give examples
of substances with low, neutral, and high pH. - Answer✔️✔️-a. Acid:
Compound that forms H+ ions in water
Biology 1320 :Texas State University
pH less than 7
b. Base: Compound that forms OH- in water
pH greater than 7
20. • Know why life is based on carbon and not silicon. Describe the
properties of carbon that make it the atom of life. - Answer✔️✔️-a. Carbon
can form up to 4 stable covalent bonds
b. Not based on silicon because:
i. Silicon molecules do not form rings
ii. Molecules made up of multiple silicon atoms are often unstable
23. • Know the four major groups of chemical building blocks within the
cell (CLAN). - Answer✔️✔️-a. Carbohydrates
b. Lipids
c. Amino Acids
d. Nucleic Acid
24. Know the different types of carbohydrates: Simple sugars,
disaccharides, oligosaccharides, and polysaccharides. Know the difference
between cellulose, starch, glycogen, and chitin, and their roles in plant,
animal, and fungal cells. - Answer✔️✔️-i. Simple sugars: Short chain carbs,
glucose, ribose, glycerol
ii. Disaccharides: 2 simple sugars bonded together
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