Biology Questions

Enzyme enegry Entropy Activation energy O Substrate energy Question 34 1 point 1 Listen Consider a situation in which the enzyme is operating at optimum temperature an pH and has been saturated with substrate What is your best option for increasin the rate of the reaction Increase the pH O Increase the temperature Increase the substrate concentration nonyme concentration

enzymes do not function as well at temperatures other than the optimal temperature bacteria reproduce more rapidly at higher body temperature sweating removes prosthetic groups from biological enzymes the higher temperature increases the activity of lyases Question 26 1 point Listen because 1 The equation AB H2O A B would be catalyzed by which of the following classes of enzymes O Oxidoreductases Transferases Hydrolases

All animals are made of cells All organisms are made of many cells Cells arise spontaneously from organic matter O Viruses exist independently of cells Question 20 1 point Listen CRISPR technique is used for separating proteins from mixtures O separating DNA from mixtures O genome editing testing rodent social behavior

separating DNA from mixtures genome editing testing rodent social behavior Question 21 1 point 4 Listen The limit of resolution can best be defined as O the distance that two objects must be apart to be distinguished as separate objects the magnification power of a microscope the inverse of the wavelength of light it is greatest for black light the distance that an object must be moved to be distinguished from its background

Fatty acids Steroids Chaperones Polypeptides Question 18 1 point 4 Listen The complete folding of polypeptides into proteins can be attributed to which of the following O electrostatic interactions hydrogen bonds hydrophobic clustering All of the other answer choices identify forces that can affect the folding pattern

Monomers are removed from polymers by condensation hydrolysis O substitution neutralization reactions

ter spread on the surface of the moon what effect would it have temperature If we could keep a layer Because water has a high heat of vaporization the temperatures would rise to the upper extremes Physical conditions would remain the same Water would absorb and hold heat and moderate the temperature extremes The temperatures would drop to the lower extremes Question 8 1 point Listen Why do ionic substances such as NaCl dissolve so readily in water The sodium ions repel the negative end of the water molecule lonic substances do not dissolve in water The charged ends of the water molecules are able to surround the oppositely charged salt ion

After shaking the vinegar and oil levels separate based upon polarity and density To this you add glucose and sodium citrate and shake again Where do you expect to find the glucose and sodium citrate in greatest quantities Both will concentrate in the vinegar layer Both will be uniform throughout both layers Sodium citrate will concentrate in the vinegar glucose in the oil The glucose will concentrate in the vinegar sodium citrate in the oil Question 10 1 point Listen How do large polar and charged molecules cross biological membranes O They cross biological membranes via transport proteins that form hydrophilic channels through the membrane Large polar and charged molecules can t cross biological membranes They must be hydrolyzed before they can cross a biological membrane logical membranes via diffusion through the hydrophilic core of

Bond energy is directly proportional to bond stability such that the more stable a bond is the more energy will be required to break it There is no relationship between bond energy and bond stability Bond energy is inversely proportional to bond stability such that the more stable a bond is the less energy will be required to break it Bond energy is inversely proportional to bond stability such that the more stable a bond is the less energy will be required to break it Question 16 1 point 4 Listen Water is an excellent solvent for Olipids Ohydrocarbons membrane proteins

4 Question 14 1 point 40Listen The electron microscope has much better resolving power than the light microscope because living samples are used in electron microscopy the wavelength of the electron beam is much shorter than the wavelengths of visible light tron microscope uses UV fluorescence

ressed You would be studying the macrophage information O amplicon genome transcriptome metabolome to obtain this Question 6 1 point 4 Listen Which of the following is not a fundamental property of carbon Carbon containing molecules are diverse Carbon containing molecules may form stereoisomers Carbon atoms are most likely to form ionic bonds with one another

Glucose 6 phosphate Adenosine triphosphate Amino acid Aminoacyl tRNA Question 12 1 point Listen Which of the following is an informational macromolecule ODNA ATP O Starch Glycogen

sample would be centrifugation chromatography polyacrylamide gel electrophoresis agarose gel electrophoresis cells The best way Question 4 1 point 4 Listen Which of the following biochemical techniques uses an electrical field to separate macromolecules based on their mobility through a semisolid gel Ultracentrifugation Light microscopy

Ribosome Virus Mitochondrion Protein Question 2 1 point 1 Listen Which of the following is an application of immunofluorescence microscopy Visualization of the surface structures of a specimen Construction of three dimensional images of structures smaller than 10 nm Identification of specific components of the immune system ch organelle or cellular compartment contains a particular p

Consider the image below solute particle In this situation which of the following will occur Water will flow out of the cell in a process called crenation Water will flow into the cell in a process called hemolysis There will be no net water flow

solute particle In this situation which of the following will occur Water will flow out of the cell in a process called crenation Water will flow into the cell in a process called hemolysis There will be no net water flow

1 What is the purpose of phosphorylation and dephosphorylation and what is the difference between the two

Why is a standard state necessary in biochemistry and all of science

ARE VI Venn Diagram Activity Part A Use the word bank to complete the Venn diagram to comparing living things and viruses WORD BANK contains genetic material uses a host to reproduce evolves quickly contains a capsid LIVING THINGS Fmaintains Momeostasis maintain homeostasis has a cell membrane responds to Stimuli evolves can thermoregulate has cell organization has cell organize Fuses a host to reproduce COMMONALITIES responds to stimuli reproduces grows and develops consumes nutrients for energy VIRUSES

Why should biological cells not be in a state of equilibrium

Write the systematic IUPAC name for each of the following organic molecules structure OH T CH3 CH2 CH2 CH CH2 CH CH2 C CH CH3 CH3 CH3 OH CH3 CH CH3 CH3 CH3 CH CH2 CH CH2 CH2CH2CCH3 OH CH3 HO CH2 C C CH3 CH3 CH3 OH CH3 name 0 0 0

Draw the skeletal line structure of dipropyl ether

Write the common not systematic name of each organic molecul Hint your answer should have more than one word structure CH3 CH2 CH2 O CH2 CH2 CH3 CH3 CH O CH CH3 name 0 0 X S

raw the skeletal line structure of 7 9 dimethyl 3 decanol

Add a methyl substituent at position 2 and a methoxy substituent at position 3 to this organic molecule Make sure to use the same condensed drawing style when adding your substituents

Add a methyl substituent at position 2 and an isopropoxy substituent at position 4 to this organic molecule Make sure to use the same skeletal drawing style when adding your substituents

a b C Question How do acids and bases affect the reaction rate of an enzyme 2 The graph to the right shows the optimum pH for the enzyme catalase Remember that Acids have a pH of 1 6 9 and bases have a pH of 7 1 14 1 What is the optimum pH for this enzyme Hypothesis The following terms can be used to fill in the blanks below Terms may be used once more than once or not at all acidic basic speed up slow down 1 If we make the solution more acidic than water then the catalase reaction will Experiment Materials If we make the solution more basic than water then the catalase reaction will 3 reactions vials 3 cubes of potatoes exact same size crushed increasing enzyme activity Water Acetic acid vinegar Water sink Baking soda solution 5 6 optimum pH 7 pH Measured Measured height of the bubbles pH 8 Hydrogen peroxide Food coloring and dish soap to see the bubbles more easily Procedure 2 1 Obtain 3 reaction vials and 3 cubes of crushed potato Put the potato cubes in the vials Measure the pH of the vinegar water and baking soda with pH paper Record the values in the data table below 3 Add one to each of the three separate vials Pour just enough to cover the potato cube Acetic acid vinegar 9 10 4 Get approximately 30 ml of hydrogen peroxide in a beaker and add food coloring and dish soap a couple drops each 5 Pour 10 ml in each of the 3 reaction vials as quickly as you can and start a timer Mark the beginning height of the solution on each of the vials Environmental condition Acid vinegar Water Base baking soda solution Dispose of your waste and return the reaction vials and beakers where you found them 6 After 5 minutes mark the final height of the bubbles for each reaction on each of the vials 7 Calculate the difference in height for each of the reactions and record your data in the table below

This connective tissue looks like strands of wavy hair It is very strong and attaches muscles to bones Dense Regular Collagenous

Trace the path of water flow through a leuconoid sponge 4 7 osculum 3 flagellated chamber 4 prosopyle 6 apopyle 1 ostia excurrent canal 5

Which of the following classes of sponges have siliceous spicules Select all that apply Hexactinellida Calcarea Homoscleromorpha

Match the cell type to the correct function prey capture in ctenophores feeding in mollusks equilibrium detection buoyancy control in mollusks prey capture and defense in cnidarians osmoregulation in flatworms movement of water through sponges 1 choanocyte 2 cnidocyte 3 colloblasts 4 flame cells 5 siphuncle 6 radula 7 statocyst

Trace the path of water flow through a leuconoid sponge osculum flagellated chamber prosopyle apopyle ostia excurrent canal

25 When sharing the road with large trucks other drivers should NO ZONE NO ZONE NO ZONE Never travel in a No Zone Zone NO ZONE Quickly and safely move through any No

24 Looking at the diagram which vehicles are required to stop for the school bus red on a multiple lane road divided by a physical barrier Divided Highway w Barrier A B CO D

23 Any use of a cell phone while operating a motor vehicle is considered a distraction because EYES ON THE ROAD NOT ON YOUR PHONE LOOK ALIVE It causes the driver to be concerned about the cost of the call It occupies the driver s hands eyes and mind It draws the attention of other drivers as it is

drivers because ing poses special The speed limit is increased at night There are fewer cars on the roads at night

Question 2 of 25 2 If you approach a flashing red traffic light you O O sign C Are traveling in the wrong direction Must treat the intersection the same as a stop

Another name for a 4 way intersection An area designated for road construction workers

Question 24 of 25 24 All drivers under the age of 21 have a specific restriction prohibiting them from Driving or attempting to drive while smoking Driving or attempting to drive before midnight Driving or attempting to drive after consuming alcohol

22 Looking at the diagram which vehicles are required to stop for the school bus red on a two lane road A B CO

Neth Cellular respiration H O NADH Oxygen in H NADH Pynner 000 000 Krebs cyde ATP CO Oxidative phosphorylation Cytoplasm FADH and NADH Outer mitochondrial membrane trix Intermembrane space 415 Match each of these steps in respiration with the reduced product s formed in each case In other words what molecule ends up with the electrons after each step Drag each item on the left to its matching item on the right Inner mitochondrial membrane Matrix glycolysis oxidative phosphorylation lo Question I know You can g 100 points Acti View Ac 1 Cur 1 Yous been Questic

use

passing another vehicle you should

Question 9 of 25 9 If it is necessary to make an emergency stop while driving on an interstate you should Blow the horn at passing cars to get their attention Get out of the vehicle and flag down the first vehicle that passes Pull off the road turn on your emergency

Chapter 5 Page s 91 92 5 1 Explain how photosynthesis and cellular respiration support life on Earth Which of the following statements is are true and which is are false True Drag appropriate answer s here Photosynthetic organisms don t undergo cellular respiration There are both eukaryotic and prokaryotic photosynthesizers Photosynthetic organisms use ATP Photosynthetic organisms build glucose molecules Prokaryotic organisms breathe and undergo cellular respiration There would be no life on Earth without photosynthesis propriate answer s here

e Page 97 5 4 Describe the role of enzymes in metabolic pathways Complete the following sentence Enzymes bind to specific active sites Drag word s below to fill in the blank s in the passage and decrease chemical reactions resulting in new rubisco products substrates catalyze

ePage s 93 94 Drag the molecules to their best matches below Drag each item on the left to its matching item on the right Note that every item may not have a match while some items may have more than one match ADP ATP contains two phosphate groups higher mass molecule lower mass molecule

Which stage s of eukaryotic cellular respiration is are impacted by cyanide poisoning Impacted photosynthesis oxidative phosphorylation Drag appropriate answer s here Krebs cycle glycolysis

ePage s 95 96 5 5 Label a diagram of the light dependent and the light independent reactions of photosynthesis Electrons from the high energy electron donor NADPH get donated to which compound Click on the correct answer Water Oxygen Light Click or tap the appropriate place in the image Thylakoid membrane 1000 ATP NADPH NADP ADP Carbon dioxide Calvin cycle Glucose

Cellular respiratio Oxygen in CO Oxidative phosphorylation trix Inner mitochondrial membrane Matrix Recreate the order of the flow of electrons through oxidative phosphorylation from the electron donor to the terminal acceptor Start by clicking the first item in the sequence or dragging it here Drag the items below into the box above in the correct order starting with the first item in the sequence Electrons are donated to oxygen Protein complexes accept electrons and also pump protons across the mitochondrial membrane