Biology Questions

Question 2 An arrow pulled back in a bow is an example of potential energy O True O False

uestion 1 Which of the following is NOT an example of kinetic energy O A dog walking O A flying tennis ball O An orange falling off a table O All of these are correct

Question 8 All enzymes have an optimum temperature at which they work most efficiently O True O False

Moving to another question will save this response estion 7 Question 7 of 9 1 points is a phenomena that occurs when the end product of a biochemical pathway binds to an active site on the enzyme that catalyzes the first reaction of the pathway O Anabolism O Feedback inhibition O Catabolism O Noncompetitive inhibition Save Answer

Blue green algae A B nekton zooplankton

https openstax org books biology 2e pages 3 1 synthesis of biological macromolecules 1 What would you be left with if you took the total weight of an organism and subtracted out its cellular dry mass 2 How are monomers physically joined together to make polymers 3 What gets dehydrated during a dehydration synthesis reaction 4 Name the four organic polymer macromolecules that living things are made of 4 pts 5 Explain why water is one of the reactants needed during all hydrolysis reactions 6 How are dehydration synthesis reactions and hydrolysis reactions sped up 7 When autotrophs like plants do photosynthesis does this process take energy or release energy How do you know 2 pts 8 When organisms eat and digest their food is their body doing dehydration synthesis or hydrolysis How do you know 2 pts

For DNP the LD50 is too close to the therapeutic dose range True O False

What is the interaction of DNP in cellular respiration O It interfers with complex 1 O none of the choices is correct O it blocks the ATP synthase transporter channel O It cases the cristae to leak

From 1 Acetly Co A what is produced O1 glucose O 2ATP 2NADH and 3 ATP O 1ATP 1FADH2 3NADH O 2ATP 2FADH2 6NADH

CO2 is a wast product of cellular respiration From which of the phases does it originate Glycolysis O Citric Acid Cycle none of the choices is correct

What is the function of oxygen in the ETC to ensure a steady supply of NADH to bind to Cyt 23 none of the choices is correct O to catch the hydrogen generated at the end of the ETC

As NADH gives up its hydrogen to transporter 1 in the ETC NADH is reduced O hydrogenated none of the choices is correct oxidized LLEE

The intermembrane space is O basic O neutral O acidic

In order to prepare Pyruvate for entry into the Krebs cycle this substance is added Vitamin A NADH Vitamin C oxygen

During generation of the proton gradient in the ETC the protons move from the the through the transporters inner membrane matrix intermembrane space martix matrix inner membrane matrix intermembrane space none of the choices are correct to

Oxidation reactions in biological systems generally involve loss of electrons and hydrogen ions True False Question 15 0 5 points Listen Which of the following is a coenzyme FAD COA All of the above are coenzymes

none of them both FAD and NAD NAD FAD Question 4 0 5 points Listen If 2 glucose molecules enter a cell and are used during aerobic cellular respira which of the following would result in the Kreb s cycle 4 FADH2 6 NADH 3 NADH

the proton gradient established by electron transport has enough energy to drive ATP synthesis True False Question 19 0 5 points Listen acetyl CoA is a product of the citric acid cycle True False Question 20 0 5 points Listen As pyruvate is prepared for the citric acid cycle it undergoes a process of oxidative decarboxylation

respiration except All could serve as the terminal electron acceptor in anaerobic respiration iron sulfur protons 02 Question 17 0 5 points 4 Listen electron transport causes protons to be pumped out of the mitochondrial matrix True

Each of the following is fermentation products except acetyl CoA lactate propionate OO ethanol Question 10 0 5 points Listen Why are mitochondria so prevalent in skeletal muscle Mitochondria provide the muscle elasticity to contract More mitochondria are required in tissues where blood flow is restricted Mitochondria provide energy for muscle contraction

The breakdown of glucose to pyruvate by a cell is aff reaction Catabolic Anabolic Aerobic Apoptotic Synthetic Question 13 0 5 points Listen An anabolic reaction usually requires energy True

Which will produce more ATP Pyruvate oxidation Krebs cycle Oxidative phosphorylation Glycolysis Question 2 0 5 points 1 Listen How many NADH and FADH2 will enter the ETC from 1 molecule of glucose 6 NADH 2FADH2 6 NADH 1 FADH2 10NADH 2 FADH2 10 NADH 1 FADH2

how many ATPs would be synthesized specifically in the Kreb s cycle 8 1 4 2 Question 6 0 5 points Listen Which shows the steps of aerobic oxidation of glucose in the correct order glycolysis ATP synthesis in mitochondria TCA cycle generation of acetyl CoA electron transport proton pumping glycolysis generation of acetyl CoA TCA cycle electron transport proton pumping ATP synthesis in mitochondria glycolysis TCA cycle generation of acetyl CoA electron transport proton numping ATP synthesis in mitochondria

2 calculate how to make solutions of varying molarity when provided molecular weight of compound

Which of the following cross the phospholipids bilayer at least once integral proteins peripheral proteins

ATP synthase in part of the fedrmentation electron transport chain glycolysis citric cycle

Solute exchange among body fluids takes place by diffusion or active transport and water diffusion keeps the osmolarities of the different body fluids the same The diagram below gives the relative concentrations of various substances in intracellular and interstitial fluids While smaller solutes can diffuse through the cell membrane larger ones must rely only on protein transport Based on this information which of the following statements can be inferred Check all that apply View Available Hint s Sodium ions diffuse out of the cell Potassium ions diffuse into cells Large proteins do not diffuse freely through the cell membrane Potassium ions must be actively transported into cells Water can pass through the cell membrane by osmosis OSmall proteins pass through the cell membrane by osmosis Submit Previous Answers Intracellular fluid Cell Low Nat concentration High K concentration High protein concentration Interstitial fluid High Nat concentration Low K concentration Low protein concentration

How does a COMPETITIVE INHIBITOR decrease the rate of an enzyme reaction by binding at the active site of the enzyme O by changing the shape of an enzyme O by changing the free energy change of the reaction by acting as a coenzyme for the reaction

Lactic acid fermentation occurs in Muscles yeast whereas alcohol fermentation occurs in

Which of these is TRUE in regards to junctions Tight junctions prevent leakage of the extracellular fluid across a layer of epithelial cells and gap junctions a channels that allow molecules to flow between cells Gap junctions prevent leakage of the extracellular fluid across a layer of epithelial cells and tight junctions a channels that allow molecules to flow between cells

Which of the following is FALSE Microtubules are involved in the movement of vesicles within the cell The cytoskeleton can be found only outside the cell Microfilaments support cell shape The cytoskeleton consists of microfilaments microtubules and intermediate filaments

Plasma membranes are selectively permeable This means that O anything can pass into or out of a cell as long as the membrane is intact and the cell is healthy the plasma membrane allows some substances to enter or leave a cell more easily than others glucose cannot enter the cell plasma membranes must be very thick

The presence of cholesterol in the plasma membranes of some animals O enables the membrane to stay fluid more easily when cell temperature drops makes the membrane less flexible allowing it to sustain greater pressure from within the cell O Makes the animal more susceptible to circulatory disorders No answer text provided

ATP is O with energy whereas ADP is Charged is not charged Not charged charged

Which of the following is FALSE cell volume will not change if placed in an isotonic solution in which the solute concentration is the same on bot sides of a membrane When cells are placed in a hypertonic solution the solute concentration is higher outside and the cells will shrivel When cells are placed in a hypotonic solution the solute concentration is lower outside and the cells lyse or burs Cells placed in an isotonic solution will cause the cell volume to decrease

The following are the functions of membrane proteins EXCEPT Transport of molecules across a membrane Involved in signal transduction Involved in cell cell recognition Involved in synthesis of DNA molecules

Which of the following statements is CORRECT about diffusion It is very rapid over long distances It requires an expenditure of energy by the cell It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration It is an active process in which molecules move from a region of lower concentration to one of higher concentration

Which of the following are not related to fermentation Makes ATP in the absence of oxygen Bread beer Weight lifting swimming

Which of the following statements regarding enzymes is FALSE Substrates bind to an enzyme s active site An enzyme s function is not affected by changes in pH or temperature Enzymes catalyze specific reactions Lowers the activation energy of a reaction

Glycolosis and fermentation occurs in the phosphorylation occur in the Cytoplasm mitochondria whereas both the citric acid cycle and oxidative

D occurs in the chloroplast whereas Photosynthesis Oxidative phosphorylation Oxidative phosphorylation Photosynthesis occurs in the mitochondria

Which of the following is the overall equation for photosynthesis OO 6CO2 6H O Light C6H12O6 602 C6H12O6 602 6CO2 6H2O light CO2 6H2O C6H12O6 602 www mpape MAN www 1882 Malay abas BEEN Pake DEST PEN FESION mb

Which of the following produces the MOST ATP when glucose C6H12O6 is completely oxidized to carbon dioxide CO and water glycolysis fermentation Cellular respiration Photosynthesis

Which of the following is the overall equation for the cellular respiration of glucose C5H12O6 6 O2 5 CO2 6 H O energy ATP 5 CO2 6 H O C5H12O6 6 O2 energy ATP C6H12O6 6 026 CO2 6 H O energy ATP C6H12O6 energy ATP 6 CO2 6 H O 6 02

Owas isolated from an ancient meoterite sample found in Australia is a virus that infects other viruses O is the first virus found to replicate outside of a host cell O is hypothesized to be the ancestor to all other viruses Question 4 Icosahedral capsids are only found in Giant viruses because the complexity of the capsid requires a minimum of 80 genes to constru O True False Question 5 The coccolithovirus can cause algal blooms by infecting and ultimately killing the primary competitors of marine algae

A virus that requires an RNA dependent RNA polymerase would be synthesizing RNA from an RNA template DNA from an RNA template O DNA from a DNA template RNA from a DNA template Question 2 Prions are infectious RNA molecules that can lead to neurodegenerative diseases O infectious DNA molecules that can lead to neurodegenerative diseases

RANDOM ASSORTMENT or Independent Assortment At metaphase 1 tetrads line up randomly at the metaphase plate Sometimes all the paternal or all the maternal chromosomes face the north pole of the cell Most often there is a random mix of some paternal and some maternal chromosomes facing the north side There is no way to know which way the maternal and paternal chromosomes will go These northbound chromosomes eventually end up in half of the gamete cells and the southbound chromosomes end up in the other gamete cells If a cell only has one type of chromosome then there are only 2 possible arrangements of chromosomes at the metaphase I plate These 2 arrangements result in 2 different types of gametes If N number of type of chromosomes then the number of possible chromosome combinations in gametes 2 Show and draw how different arrangements of the 3 types of pop bead chromosomes at the cell equator at metaphase I could lead to 8 different combinations in the genetic information of gametes Indicate color and size of chromosomes clearly 1000

Color the guanines PURPLE Color the cytosines YELLOW Step 3 Color the hydrogen bonds between A and T BLACK Learve the hydrogen bonds between G and C WHITE

NSAIDs prevent the production of prostaglandins by physically blocking the movement of COX enzymes or attaching to COX enzymes changing their chemical structure and function True False

Summary of Meiotic Division for Human Cell Parental Cell IN Daughter Cell Meiosis Il FINA Duplication IN Daughter Cell chr DNA Meiosis Meiosis DOO o IN Daughter Cell IN Daughter Cell IN Daughter Cell IN Daughter Cell