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BIO 116 Exam Review Questions and Answers

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BIO 116 Exam Review Questions and Answers Which of the following lists some of the levels of biological organization from less complex to more complex? - Ans:-atoms, molecules, cells, organs What are isotopes? - Ans:-two atoms of an element that have same number of protons but different number...

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  • October 23, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BIO 116
  • BIO 116
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BIO 116 Exam Review Questions and
Answers

Which of the following lists some of the levels of biological organization from less complex to more

complex? - Ans:✔✔-atoms, molecules, cells, organs


What are isotopes? - Ans:✔✔-two atoms of an element that have same number of protons but different

numbers of neutrons


What are valence electrons and why are they important? - Ans:✔✔-Valence electrons are the electrons

in the outermost orbital of an atom that can participate in bonding


What are covalent bonds? - Ans:✔✔-electrons shared between atoms


What are ionic bonds? - Ans:✔✔-electrons transferred between oppositely charged atoms


What are hydrogen bonds? - Ans:✔✔-hydrogen atom covalently bonded to a very electronegative atom

is attracted to another electronegative atom


Van der Waals interactions - Ans:✔✔-attractions between partial positive and partial negative charges in

close together molecules due to dispersion forces



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Rank hydrogen bonds, ionic bonds, Van der waals interactions, and covalent bonds from strongest to

weakest within a cell - Ans:✔✔-covalent bonds > ionic bonds > hydrogen bonds > van der waals

interactions


Describe how cohesion and adhesion make a tree grow tall - Ans:✔✔-Cohesion is water molecules H

bonding to each other, which pulls water molecules up through the tree. Adhesion is water molecules

hydrogen bonding to other substances, like the xylem of the tree. Together, these forces overcome

gravity.


Explain the difference between saturated and unsaturated fats - Ans:✔✔-Unsaturated fatty acids have a

kink (double bond) on their tail that promotes fluidity. Saturated fatty acids do not have this bond so

they tightly pac


What kind of lipid is responsible for controlling gene activity? - Ans:✔✔-Steroids: contain a carbon

skeleton of 4 fused rings


What composes a triglyceride/triacylglycerol? - Ans:✔✔-An ester derived from glycerol and three fatty

acids


What is the difference between dehydration and hydrolysis? - Ans:✔✔-Dehydration is synthesizing a

polymer- you remove H2O and form a new bond. Hydrolysis is breaking down a polymer- you add H2O

and break a bond.




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FIRST PUBLISH OCTOBER 2024




A __________________ is formed when a dehydration reaction joins two monosaccharides This covalent

bond is called a _________________. - Ans:✔✔-disaccharide , glycosidic linkage.


Carbohydrates can serve as ______ and _______material. - Ans:✔✔-fuel and building material.


Chromatin is made up of what? - Ans:✔✔-DNA and proteins


Chromatin is only coiled tightly into chromosomes during DNA replication - Ans:✔✔-True


The nucleus has an inner and outer membrane with nuclear pores transcribed mRNA can leave through -

Ans:✔✔-True


Rough ER functions - Ans:✔✔-Membrane factory for the cell, Distributes transport vesicles (secretory

proteins surrounded by membranes), Secrete glycoproteins from ribosomes


Smooth ER functions - Ans:✔✔-Synthesize lipids, Store calcium ions, Metabolize carbohydrates, Detoxify

drugs and poisons


Golgi apparatus is in charge of - Ans:✔✔-shipping and receiving


The Golgi apparatus modifies products from the - Ans:✔✔-endoplasmic reticulum.


The Golgi apparatus manufactures certain - Ans:✔✔-macromolecules


The Golgi apparatus sorts and packages materials into - Ans:✔✔-transport vesicles



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