Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

EBIO 1210 Exam 1: Questions and Answers on Biological Molecules and Cellular Processes, Exams of Biology

University of Colorado Boulder (CU Boulder)Biology

A comprehensive set of questions and answers covering key concepts in biology, specifically focusing on biological molecules like lipids, carbohydrates, proteins, and nucleic acids. it delves into the properties of these molecules, their structures, and their roles in cellular processes. the questions test understanding of concepts such as saturated and unsaturated fats, polar and non-polar bonds, and cellular transport mechanisms. the detailed answers offer valuable insights for students studying introductory biology.

Typology: Exams

2024/2025

Available from 04/20/2025

BetaTutors
BetaTutors 🇺🇸

4.5

(4)

1.5K documents

1 / 7

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
EBIO 1210 EXAM 1 QUESTIONS WITH CORRECT ANSWERS
4 classes of large biological molecules -- Answer ✔✔ Proteins, Lipids, Nucleic Acid,
Carbohydrates
Predict the results of removing hydrogen atoms from the fatty acid tails of the saturated
fats -- Answer ✔✔ The number of carbon-carbon (C=C) double bonds in the fat
molecule increases and the fat becomes more fluid.
3 lipid subgroups -- Answer ✔✔ phospholipids (form biological membranes), fats (store
energy), steroids (hormones that regulate genes)
Building blocks of a fat -- Answer ✔✔ glycerol + 3 fatty acid tails
Saturated fat -- Answer ✔✔ -only single bonds
-exists as solid
-low(er) potential energy
-non polar & hydrophobic
Unsaturated fat -- Answer ✔✔ -single & double bonds
-exists as liquid
-high potential energy
-non polar & hydrophobic
The saturated fatty acid is saturated with the maximal number of -- Answer ✔✔
hydrogen atoms and C-H bonds
phospholipid -- Answer ✔✔ -phosphate group + glycerol + 2 fatty acid tails
-hydrophilic head & hydrophobic tails
non-polar bond -- Answer ✔✔ -high potential energy
-no charge
pf3
pf4
pf5

Partial preview of the text

Download EBIO 1210 Exam 1: Questions and Answers on Biological Molecules and Cellular Processes and more Exams Biology in PDF only on Docsity!

EBIO 1210 EXAM 1 QUESTIONS WITH CORRECT ANSWERS

4 classes of large biological molecules -- Answer ✔✔ Proteins, Lipids, Nucleic Acid, Carbohydrates Predict the results of removing hydrogen atoms from the fatty acid tails of the saturated fats -- Answer ✔✔ The number of carbon-carbon (C=C) double bonds in the fat molecule increases and the fat becomes more fluid. 3 lipid subgroups -- Answer ✔✔ phospholipids (form biological membranes), fats (store energy), steroids (hormones that regulate genes) Building blocks of a fat -- Answer ✔✔ glycerol + 3 fatty acid tails Saturated fat -- Answer ✔✔ - only single bonds

  • exists as solid
  • low(er) potential energy
  • non polar & hydrophobic Unsaturated fat -- Answer ✔✔ - single & double bonds
  • exists as liquid
  • high potential energy
  • non polar & hydrophobic The saturated fatty acid is saturated with the maximal number of -- Answer ✔✔ hydrogen atoms and C-H bonds phospholipid -- Answer ✔✔ - phosphate group + glycerol + 2 fatty acid tails
  • hydrophilic head & hydrophobic tails non-polar bond -- Answer ✔✔ - high potential energy
  • no charge
  • hydrophobic
  • electrons loosely held
  • atoms have similar or equal attraction for electrons
  • Ex. Hydrocarbon, hydrogen gas, and methane polar covalent bond -- Answer ✔✔ - low potential energy
  • partial charge
  • hydrophilic
  • unequal sharing of electrons
  • electrons tightly held
  • atoms have high attraction for electrons Monomer -- Answer ✔✔ A simple compound whose molecules can join together to form polymers Polymer -- Answer ✔✔ A long molecule consisting of many similar or identical monomers linked together. How is fat synthesized? -- Answer ✔✔ From Glycerol and Fatty Acids Properties of Oxygen -- Answer ✔✔ - Partial negative charge Properties of Carbon -- Answer ✔✔ Properties of Hydrogen -- Answer ✔✔ - diatomic
  • forms lots of bonds Hydrogen bond -- Answer ✔✔ - Partially negative O attracted to partially positive H
  • weak bond Non-polar covalent -- Answer ✔✔ - No charge
  • Hydrophobic
  • Equal sharing of electrons
  • High potential energy Polar covalent bond -- Answer ✔✔ - Partial charge

Endocytosis -- Answer ✔✔ - ingestion of molecule inside cell from outside plasma membrane Protein hormones -- Answer ✔✔ - water soluble

  • produced in rough ER Steroid hormones -- Answer ✔✔ - water insoluble
  • produced in smooth ER Cholesterol -- Answer ✔✔ - acts as temperature buffer by spacing out lipids in phospholipid bilayer
  • increases fluidity at low temperatures
  • limits phospholipid movement and stabilizes membranes at high temperature
  • precursor to steroid hormones Predict how many molecules of water are needed to completely break down a fat into its monomers? -- Answer ✔✔ 3 Predict how many molecules of water are needed to completely break down a polymer consisting of 20 monomers? -- Answer ✔✔ 19 Always (n-1) Picture the beginning synthesis of a polymer made of the following kind of monomers. Each monomer contains 2 carbon (C) atoms, 6 hydrogen (H) atoms, and 1 oxygen (O) atom; each monomer has the formula C2H6O. What is the formula of the molecule formed after connecting three of these monomers? -- Answer ✔✔ C2H6O +C2H6O +C2H6O =C6H18O C6H18O3-OH-OH =C6H14O Predict whether or not hydrogen bonds will form between the fatty acid tails of a fat. -- Answer ✔✔ 1. The C-H bonds of fatty acids are non polar
  1. The C atoms in C-C, C=C, and C-H bonds of fatty acids have no partial electrical charge.
  2. The H atoms in C-H bonds have no partial electrical charge.
  3. The shared electrons are loosely held in the C-H bonds of fatty acids. Predict whether or not hydrogen bonds will form between the fatty acid tails of a fat. -- Answer ✔✔ Hydrogen bonds will not form Is Vitamin D2 Hydrophobic or hydrophilic -- Answer ✔✔ Hydrophobic (Because it has more non-polar (C=O) bonds than the one polar (O-H) bond) Is Vitamin B5 hydrophilic or hydrophobic -- Answer ✔✔ Hydrophilic Which lipid has the highest energy content? All have 18 carbon atoms in each of their fatty acid chains. A) a fat containing only saturated fatty acids B) a phospholipid containing only saturated fatty acids -- Answer ✔✔ A) a fat containing only saturated fatty acids Which lipid has the lowest number of C-H bonds? All have 18 carbon atoms in each of their fatty acid chains. A) a fat containing only monounsaturated fatty acids B) a fat containing only saturated fatty acids C) a phospholipid containing only monounsaturated fatty acids D) a phospholipid containing only saturated fatty acids -- Answer ✔✔ C) a phospholipid containing only monounsaturated fatty acids

L10. Deduce which bonds are covalent versus hydrogen bonds. The bonds labeled ______ are covalent bonds and the bonds labeled ________ are hydrogen bonds. A) A-E; F, H, I B) A-D&G;E,F,H,I C) E, F, H, I; A-D & G D) F, H, I; A-E E) A-D; E-I -- Answer ✔✔ C) E, F, H, I; A-D & G