Cell: The Unit of Life Questions and Answers

part time workers switch to full time work with no change in the labor force participation rate As a result the Official unemployment rate will fall Official unemployment rate will rise Official unemployment rate will remain unchanged The size of the labor force will increase Question 5 3 points Listen Which of the following activities is counted in GDP Intermediate goods Export Used appliances Social security check from the government Microsoft stock

Buying a newly built house Groceries Vehicle for personal use Education Medical treatment Question 24 3 points Listen What does NOT cause economic growth according to the production function Capital goods production Technological innovations War deration

Which of the following is not one of the six classes of lipids Triacylglycerols Pectins Steroids Fatty acids

Identify the cells found within the tissue shown

16 Isoniazid works by preventing synthesis of mycolic acids Which patient below would benefit most from isoniazid a A patient with influenza caused by H1N1 influenza virus b A patient with strep throat caused by Streptococcus pyogenes c A patient with Lyme disease caused by Borrelia burgdorferi d A patient with tuberculosis caused by Mycobacterium tuberculosis 17 The periplasm a Describes the space in which the genomic DNA is concentrated b Describes the space between the inner and outer membrane of a Gram negative cell c Describes the space between the inner and outer membrane of a Gram positive cell d Both B and C 18 Which of the following accurately describes a difference between Gram positive and Gram negative bacteria a Gram positive bacteria have a thicker layer of peptidoglycan compared to Gram negative bacteria b Gram negative bacteria contain capsules and Gram positive bacteria do not contain capsules c Gram negative bacteria are motile and Gram positive bacteria are not motile d Gram negative bacteria contain carboxysomes and Gram positive bacteria do not contain carboxysomes 19 Pseudomonas aeruginosa possesses a multi drug efflux pump driven by ATP hydrolysis This pump enables it to maintain resistance to several types of antibiotics This efflux pump would be an example of what type of transport a Facilitated diffusion b Simple diffusion c Phosphotransferase system d ABC transport 20 Which of the following correctly describes the function of the bacterial cell wall a It is a semi permeable barrier that separates the inside of the cell from the outside of the cell b It is a protective structure that prevents destruction of the organism by phagocytic immune cells c It helps bacteria to adhere to surfaces d It is a protective structure that helps to maintain cell shape and helps it to counter the osmotic pressure that results from water flowing into the cell 21 Which of the following help in the process of photosynthesis as well as carbon dioxide fixation in some photosynthetic bacteria a Carboxysome and thylakoids b Carboxysome and gas vesicles c Thylakoids and magnetosomes granules randomly

nost prominent lipids in animal cell membranes are glycolipids phytosterol phospholipids cholesterol Question 4 0 75 points Listen Most cells have a negative plasma membrane potential Vm because they have an excess of positively charged solute molecules inside the cell an excess of negatively charged solute molecules inside the cell equal concentrations of ions on both sides of the membrane an excess of negatively charged solute molecules outside the cell an excess of water molecules inside the cell

Consider the definition of energy and how energy and mass interact in the biosphere Determine which of the following scenarios would violate the first law of thermodynamics People who exercise must consume more calories to maintain the same body weight A pregnant female must consume more food to support the development of the fetus O The molecular motor myosin hydrolyzes ATP to move along a microtubule in a cell A cell accumulates 10 kcal worth of energy in order to generate 15 kcal worth of bioluminescent work

Many enzymes cannot recognize a stereoisomer of their substrate Some enzymes accept any of a whole group of substrates Carboxypeptidase recognizes any of the amino acids from the carboxyl end of a polypeptide Cells are often able to carry out metabolic activity with only a handful of enzymes because many are nonspecific Question 30 1 point 4 Listen Which of the following statements is false concerning the value AH OAH is the change in heat content A reaction with a positive AH value is exothermic OAH AE A PV In biology AH is basically the same as AE

When the AG of a chemical reaction is positive Keq 1 0 under standard conditions O reactants and products are at equilibrium products predominate over reactants reactants predominate over products None of the above

S Km S Km both S Km and S Km Question 32 1 point 4 Listen The image shows a hypothetical enzymatic pathway with four enzymes labeled E1 E2 E3 and E4 The enzymes make products labeled PO P1 P2 P3 and P4 Which of the following statements is most likely to be true in the case of the feedback regulated enzymatic pathway shown OPO binds E4 and activates it OP2 binds E2 and activates it OP4 binds E1 and deactivates it

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

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

Some of the water in your body is in the interstitial fluid Where is the interstitial fluid located Inside cells Between cells In the blood Inside the nucleus

Question 3 1 point Listen Match the stimulus with the receptor type Previous Page pain body position water and ion concentration pressure Next Page 1 osmoreceptor 2 baroreceptor 3 proprioceptor 4 nociceptor

Listen Which of the following statements does NOT apply as a descriptor of archaebacteria Single celled organisms Eukaryotic Have very simple cell structure Live in extreme environments

Page s 100 101 5 6 List the three stages of cellular respiration and explain the function of each Soreness in muscles after a heavy workout may be partially due to a buildup of lactic acid This occurs when the mitochondria in muscles run out of oxygen pyruvate ATP ADP TH 100 Vie

1 If the vehicle is equipped with air bags VA

ePage s 93 94 5 3 Define the importance of ATP in a cell Drag the labels to the appropriate locations on the figure adenosine triphosphate adenosine diphosphate energy is released energy input required A Adenosine P Phosphate P A P P P P

Appraising performance of staff involves which main activities select all that apply Discussing evaluations with worker O Evaluating job performance O Identifying job performance expectations measuring how well expectations were met

BAC means Blood alcohol concentration Blood alcohol content Blood alcohol conservation

Choose one DNA absorbs a Invisible Light b UV Light c Visible Light d Infrared Light

Y Part A Identify the structure at the tip of the pointer labeled A Cytoplasm Request Answer

Match each component to its function V Used for visual tracking of DNA migration during electrophoresis Buffer used for gel electrophoresis a DNA molecular weights standard used to compare unknown sizes of DNA fragments intercalating agent that binds to the ds DNA and enables its visualization under UV light 1 IX TBE 2 Gel Star 3 Loading dye 4 Molecular ladder

Identify the structure labeled C A

B A Which structure digests damaged organelles OA OB F E

labeled A A

Identify the structure labeled A B Est IN

Part A Identify D B C

Complete the labeling activity by identifying each stage of the cell cycle Drag the appropriate labels to their respective targets Labels can be used once or more than once Metaphase Telophase Prophase Interphase Anaphase 000 Reset Help

3 Identify the structured labeled A D U

but innervated Receive oxygen and nutrients from vessels in underlying tissues 5 High rate of regeneration Often exposed to harsh conditions

Organic Chemistry is a science based on the study of O carbon compounds O vital forces O inorganic compounds O Functional groups

changes in functional groups on a molecule can produce large biological differences at the level of an organism One example is the difference between the estradiol and sterone rue

Electronegative elements are those that O have a great propensity to attract electrons into their valence orbital are anions are cations You YOU H

A covalent bond is likely to be polar when one of the atoms sharing electrons is much more electronegative than the other atom O the two atoms sharing electrons are of the same element the two atoms sharing electrons are equally electronegative

Always be accompanied by a driver who is 35 years of age or older Always make sure all passengers are properly restrained in a seatbelt or a child safety seat

Question 19 of 25 19 This road sign means Pedestrian Crossing School Crossing

Complete the last four columns by 1 deleting incorrect options or 2 marking correct options by hiahliahtina chanaina the text color or other annotation Blood Type O O AB AB Antigens would react in a blood typing reaction anti A anti B anti Rh A B M A B 2 2 B Rh Rh A B Rh A Which antibodies Rh anti A anti B anti Rh anti A anti B anti Rh anti A anti B anti Rh A person with this blood type could have which antibodies in their blood anti A anti B anti Rh anti A anti B anti Rh anti A anti B anti Rh anti A anti B anti Rh Which blood type s could this person receive in a blood transfusion O O A A B B AB AB O O A A B B AB AB O O A A B B AB AB O O A A B B AB AB Focus

Critical Thinking 1 Design an endospore staining procedure where carbolfuchsin and methylene blue are used as the dyes Describe your protocol based on the fundamentals of the Schaeffer Fulton endospore staining method

What is the relationship between standardization and the growth of the telecommunications industry The growth of the telecommunications was based on the invention of the fiber optic cable which allowed for the industry trans ocean communication Standardization had no part in the growth of the telecommunications industry Standardization refers to the growth of assembly line rather production than O craftsmanship in the Industrial Revolution It has no bearing on telecommunications

E commerce O resulted from the use of the World Wide Web and Internet the use of personal computers in most households the use of laptop computers in colleges and universities the use of the World Wide Web as a tool for consumerism

hat sensory structures do the flatworms use to detect the presence of the egg yolk Now obtain a new dish with a few more flatworms Place a small piece of raw liver or beef in this dish and observe the response Is it similar to the response seen with the egg yolk Does the response occur more quickly with one food source than the other

e Page 76 4 8 Identify the main differences between a plant cell and an animal cell You are looking into the microscope at a cell that you placed into salty water You were expecting the cell to shrivel up but it seems to have mostly held its shape Is this cell a plant or an animal cell animal cell Click or tap a choice to answer the question plant cell

the main differences between a plant cell and an animal cell Your lab partner forgot to label the cell culture and the microscope is broken You aren t sure if you have plant cells or animal cells Luckily you have access to a variety of agents you can use to disable various organelles Determine which agents you could use to figure out if you have plant cells or animal cells Can Be Used to Differentiate Between Plant and Animal Cells Cellulolytic enzyme degrades the cell wall Distilled water causes swelling of the central vacuole Staphylococcus alpha toxin disables the function of mitochondria Lithium hydroxide causes the breakdown of phospholipid membranes Ricin disables the function of ribosomes Zn2 disables the function of chloroplasts T

Which of the following traits of a living organism were demonstrated by the synthetic cell the JCVI researchers made not demonstrated demonstrated Drag each item above to its appropriate location in the image Note that every item may not have a match while some items may have more than one match Autonomously reproduce themselves Obtain energy from their environment Sense their environment and respond to it Maintain a constant internal environment homeostasis You Q

Prior to cell theory and germ theory in the 1600s 1800s some scientists supported the theory of spontaneous generation The theory proposed that living cellular organisms could form from inanimate objects or from other unrelated organisms For example it was thought that cheese or grain could facilitate the formation of mice Which of the following tenets of cell theory refute or contradict the theory of spontaneous generation Correct Answer s The cell is the basic unit of life Cells arise from preexisting cells All living cells came from another living cell All living things are comprised of cells

Match each function to the appropriate organelle storage of water and other molecules protein synthesis internal cellular scaffolding molecule storage and breakdown external cell structure lipid synthesis cytoskeleton vacuole cell wall ribosomes smooth ER lysosome

What is the approximate size LENGTH of the circled elodea cell in micrometers Assume the elodea cell is being viewed under low scanning power with a school microscope Total Magcasion Colective Power Low Scanning Power Medium Power High Power 40x 100x 400x POV Diameter 4 mm 1 6 mm 0 4 mm

Select all that apply Which of the following are roles of proteins Some are the primary molecule used to build cell walls in plants Some are biological catalysts Some are involved in movement of materials within the cell Some transmit genetic information between generations Some are involved in moving materi als in and out of cells Some are involved in gene regula tion The primary source of energy in cells Some have structural roles Some are involved in immune de fense Some are involved in storing genetic information

PartA Identify the structure labeled C B N 1 4 ABF