Biomolecules Questions and Answers

2 Our bodies have several different buffering systems Explain a what buffers do and b why that function is essential for our bodies

Onone ol Question 2 2 points di Listen In the apple experiment the boiled apple probably didn t turn brown Why the apple was sterilized by the boiling water O the cells were killed by the boiling water O tyrosinase cannot use hot water as a substrate the enzyme was denatured by high temperature Question 3 2 points Listen In the experiment where apples were soaked in bleach lemon juice or water what was the independent variable amount of browning

nd Time Left 0 09 3 O the enzyme was denatured by high t Question 3 2 points 4 Listen In the experiment where apples were soaked in bleach lemon juice or water what was the independent variable O amount of browning concentration of enzyme different pH solutions amount of bubbles O Question 4 2 points Listen In the potato juice experiment what enzyme was involved in the reaction hydrogen peroxide

of the following statements about stomata is accurate A Stomata are not important in algae because they do not need CO2 B Stomata are important in terrestrial plants because they allow CO2 to diffuse into the plant C Stomata when closed allow CO to diffuse into plants D Stomata are important in terrestrial plants because they allow the roots to absorb water and nutrients from the soil Question 8 1 point Listen rm

How are bryophytes and seedless vascular plants alike A In both groups sperm swim from antheridia to archegonia OB The dominant generation in both groups is the sporophyte OC Plants in both groups have true roots stems and leaves D Plants in both groups have vascular tissue 7 1 point

Question 22 1 point Listen Plants that have inconspicuous flowers and produce massive amounts usually pollinated by birds bees wasps Obutterflies moths Qwind

Plasmodium the organism that causes malaria is a an OA stramenopile OB amoeba OC alveolate OD ciliate

rding to the endosymbiotic theory why was it adaptive for the larger host cell to keep the engulfed cell alive rather than digesting it as food OA The engulfed cell provided the host cell with adenosine triphosphate ATP OB The host cell was able to survive anaerobic conditions with the engulfed cell alive C The engulfed cell allowed the host cell to metabolize glucose O D The engulfed cell provided the host cell with carbon dioxide

Listen Where do you look to find moss OA in a grassy field OB up in a tree C in the shade of a tree OD underwater

While travelling along the Amazon River James contracted a case of amoebic dysentery caused by Entamoeba histolytica Luckily James doctor prescribed just in case he encountered this nasty protozoan Tamiflu Quinoline Nystatin J

Experiment 2 Enzyme Denaturation by pH What were the colors of each of your solutions on pH paper Which solutions were acidic basic or neutral in pH The following questions are about what happens when you soak the fruits in each of the three solutions then leave them out to brown Remember browning reaction Not browning no reaction Did the reaction still occur after soaking in neutral pH Did the reaction still occur after soaking in acid Did the reaction still occur after soaking in base

Type in the blanks and submit this worksheet through the assignment tab in College Paste pictures below the words Insert Picture Below Resize pictures as needed to fit at least two pictures per page Student Name Experiment 1 Enzymes Require Substrates Which substrate was absent from the reaction under water Did the browning reaction occur under water Go back to the pre lab What is the brown chemical called Does the brown chemical mean that the foods are rotting

Find an article about collagen in the body from the library and or internet related to course material from Ch 4 7 that you find interesting and post a link It could be a news article from a source like the Washington Post an article posted by a science magazine journal like Science or National Geographic or a scientific research article You cannot post something like a Wikipedia or WebMD article however You ll probably have the best luck searching for things related to Homeostatic Imbalances Post the website link or video link for another student to read Include a brief statement about why you find the article interesting I

A primes the nitrogen bases by adding to prevent the bases from binding to something other than another base DNA primase B Helicases C DNA poly merase

An H ion is an atom that has been oxidized by art electron B C

What does glycolysis literally mean A To split glucose C To split a complex sugar B To split ATP D To form glucose

A the most common form of membrane transport B the least common form of membrane transport C rarely seen in animal cells D the most energy dependent form of membrane transport

foods highly enriched for the indicated macromolecules Select a single purpose fulfilled by each subgroup of macromolecule Finally answer the extra info to fill out information specific to the macromolecular group Macromolecule Purposes Carbohydrates Proteins Nucleic Acids Lipids Dietary examples Energy Structural Information 2 Energy Structural Information 1 3 Energy Structural Information 2 1 3 Energy Structural Information 2 1 3 Purpose Subgroups 1 galactose 4 2 sucrose 3 ribose 4 no specific dietary 1 NAD NADH source 4 cellulose 1 hormones 2 enzymes 2 DNA 1 triglycerides 2 phospholipids 3 steroid hormones 4 polyunsaturated fatty acids Extra Info Which form is directly absorbed by cells Which form is used for storage What are the four levels of protein structure Which polynucleotide is used for genetic storage Which is used for genetic expression Which lipid is fully hydrophobic What is the aggregate structure formed by phospholipids

Production Synonyms molecular formuld olecular weight fun facts Effects of lysine Punctional groups and linkager Health luite

A ligand O is part of the last step involved in signal transduction has the same effect at each type of receptor it binds to Obinds to the intracellular side of the receptor protein binds selectively to specific target receptors

A hydrocarbon is said to be saturated if each internal carbon atom is covalently bonded to two hydrogen atoms None of thses are correct it has one or more double bonds between carbon atoms one end of the molecule is hydrophilic while the other end is hydrophobic

Macromolecules which may be structural parts of the cell may act as enzymes or may be involved in cell movement or communication are proteins enzymes nucleic acids carbohydrates

If you chew a piece of raw potato amylase in your saliva will start to break down the in the potato to sugar cellulose glycogen starch protein

What are hormones may be proteins may be sugars special cells special fluids in the blood plasma

Catabolic pathways break down large molecules into smaller one All of the above are correct Catabolism releases energy O Can be considered to be downhill reactions Cellular respiration would be an example of catabolism

2 Which bacterium is larger Bacillus megaterium QUESTIONS 1 Of what value is a simple stain A Simple Stain is a dye utilized to Stain the cells which will help us to visualize cell shapes and structures 2 What is the purpose of heat fixing the smear The bacteria will be killed by heat staining and will stick to the slide This aids in the proper absorption of the stair resulting in proper visibility under the microscope 3 Another method of fixing smears is to use methanol instead of heat How does alcohol chemically fix the bacteria Methanol is used to adhere the specimen to the Spide Fixing the specimen will keep it from being washed away while staining Using methanol to Fix the liquid Specimen will prevent it from being washed away 4 In heat fixing what would happen if too much heat were applied during Staining It is an effective way reparin discolored hea 7 The marphology of the specimen may alter if too much heat than us is given to it and the specimen may become rapidily CRITICAL THINKING 1 Methylene blue can be prepared as a basic stain or an acidic stain How would the pH of the stain affect the staining of bacteria The pH will determine whether or not the bacteria will have a specific charge 2 Can dyes other than methylene blue be used for direct staining Briefly explain

Which substance will be most soluble in water O CO ONH3

Trace elements are required in miniscule amounts True O False

MATCH the best term to its example or definition Due to hydrogen bonding water molecules tend to stick to each other The ability to dissolve many substances Allows water to conduct electricity Chemicals that minimize changes in pH by accepting H ions or donating them as needed hydrogen bonding or polarit universal solvent cohesion buffers

The atomic number of an atom is defined as O Arrangement of neutrons in the atomic nucleus total number of electrons and neutrons total number of energy levels O number of protrons in the atomic nucleus

What type of chemical reaction results in the breakdown of organic polymers into their monomers O condensation Ohydrolysis O oxidation O ionization

Enzymes are reusable They do not change unless they are denatured by temperature pH or ion concentrations O True O False

Triglycerides are made up of O 3 glycerols and 3 fatty acids O 2 fatty acids and 1 carboxyl acid O 1 glycerol and 2 phospholipids O 3 fatty acids and 1 glycerol

Activation energy is increased when using an enzyme O True O False

You are tutoring a fellow student about the genomes of prokaryotes You sk them to give you one important characteristic about the genomes of bacteria Which of the following statement given by your student is correct The bacterial chromosome is not contained within a nucleus but rather is found at the nucleolus O Bacterial cells can contain DNA called plasmids O Bacterial cells have multiple chromosomes packed with a relatively large amount of protein O Bacterial genomes are composed of linear DNA Bacterial genomes are diploid throughout most of the cell cycle

Complete the following sentences Allosteric inhibitors bind at a protein s active site Km is a measure of an enzyme s binding affinity Covalent attachment of a polyubiquitin chain can anchor a protein in the membrane

Many purified proteins can maintain their correct folded structure if purified into a solution with the correct pH and salt concentrations What would typically happen to a purified protein if a high concentration of urea a molecule capable of disrupting hydrogen bonds is then added to the solution The loss of hydrogen bonds will break the protein up into individual amino acids The protein will become unfolded It could refold if the urea is removed because amino acid sequence alone is sufficient to determine a protein s folded shape The protein will maintain its correctly folded shape because hydrogen bonds are not important for protein folding The protein will become unfolded It won t refold if the urea is removed because proteins require chaperones to determine their correct folded shape

The recorder point for amoxicillin 250mg is 4 and the maximum is 7 How many bottles should be ordered if there are 4 bottles of amoxicillin 250mg

Question 3 P You are asked to measure out 500 L of medicine for a patient but the measuring have is only marked in mL You correctly fill the cup to mL

Which statement below can accurately be made by 15 reviewing the information ir the Population Density Table A The United States is the most densely populated nation in the world B The United States has room for more people compared to most nations C The United States has an overpopulation issue it must deal with Population Density Country Hong Kong China South Korea India Japan Vietnam United Kingdom Germany Italy France Spain Greece North Korea Mexico United States Canada Australia Population Density People Per Square Mile 17 299 1 329 1 046 868 733 702 601 521 319 238 212 211 163 86 10 8

dose Record answer as a whole number Do not use a trailing zero Blank 1 Blank 1 Add your answer Question 2 ablet How many tablets will the nurse administer per Point The provider ordered diazepam 2 mg IM stat Available is diazepam 5 mg mL How many mL will the nurse administer Record answer to the nearest tenth or one decimal place Use a leading zero if it applies Do not use a trailing zero 0 4 ml

Starting from glutamine glycine aspartate N 10 formyl THF how many ATP equivalents are required for purine nucleotide synthesis O 6 04 O 8

What would happen during an amino acid sequencing experiment using the Edman degradation if you accidentally added twice as much Edman reagent on a per mole basis as the peptide you were sequencing B I U EEEEEE T 1 52 GO

Choose the incorrect option regarding protein motifs They lose their structure after breaking away from their parent protein They are composed of two or more protein secondary structures There are a large number of intramolecular Hydrogen bonds between the secondary structures of a motif O They are unable to function after breaking away from the parent protein

The anomeric carbons of glucose and fructose respectively are O O O C6 C2 C6 C3 C1 C3 C1 C2

You are given 2 test tubes One of it consists of glucose and the other maltose Which of the tests below would help you identify the sugar inside each test tube Benedict test Molisch test

Order 100 mg Supply 125 mg per 2 mL How many mL will be administered B D A 1 4 mL B 1 5 mL Question 10 D 1 6 mL Order 25 mg Supply 50 mg per mL How many mL will be administered 1 25 mL 0 5 mL 1 5 mL 0 25 mL 0 75 ml

Which of the following is NOT true When RNA undergoes alkali catalyzed cleavage O 2 OH is converted to 2 alkoxide ions cyclic 5 3 nucleoside monophosphate forms cyclic 2 3 nucleoside monophosphate forms transesterification reaction occurs

Supply 1 25 mg per tablet How many tablets will be administered A 2 tablets B 3 tablets C 1 tablet D 4 tablets Question 4 Order 0 625 mg Supply 1 25 mg per tablet How many tablets will be administered A 4 tablets B 2 tablets 1 tablet

Clonal Selection of a B Cell Primary Response 4 O Antibody Secondary Response Antigen 3 What is the arrow labeled 1 pointing to O B cell 4 O T cell 5 1 2 6 1 6