Biology Questions

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

Page s The following image shows a white blood cell engulfing a yeast cell through phagocytosis a nonspecific form of which of the following diffusion osmosis Click or tap a choice to answer the question exocytosis endocytosis

Which region of a phospholipid the head or the tail can be described by the following terms Match the labels to the image hydrophilic nonpolar nonpolar hydrophobic hydrophobic polar

Nucleus DNA prokaryote plant cell Rough endoplasmic reticulum rough ER Ribosomes Smooth endoplasmic reticulum smooth ER Golgi apparatus Lysosome Small vacuole Mitochondrion Cytoskeleton Plasma membrane Cell wall bacterial cell Large central vacuole Chloroplast eukaryote Cytoplasm Bacterial flagellum Ribsomes Genetic material DNA Plasma membrane

6 The acid fast differentiates between acid fast and non acid fast bacterial cells based on a Cell wall differences b Cell size c Cell shape d Cell density e Cell charge

The mycolic acid layer in acid fast bacteria is a waxy and somewhat hard to penetrate substance Knowing this what assum can you make about the timeline for infections caused by acid fast bacteria and the treatment regimens used to manag infections

Critical Thinking 1 Assume you put Mycobacterium smegmatis and Staphylococcus aureus on the same slide and perform the ZN acid fast staining procedure on the samples While decolorizing you realize the clock you are watching is not working property Assuming you over decolorized during the procedure what would you expect to see as a result Explain your reasoning

Page s 71 73 cells Match the description of transport protein or transport type to the image passive carrier proteins active carrier proteins active transport facilitated diffusion 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 You me

3 What color would non acid fast bacteria be if you used a green counterstain a Colorless b Purple c Pink d Green e Blue f Not enough information

4 Some of the following steps are used in the acid fast Ziehl Neelsen staining procedure but some of the listed steps are not used First draw a line through the steps you would not use Next place the remaining steps in sequential order with 1 bel the earliest step Heat fix the samples on the slide Add bacteria to the slide Add methylene blue to the slide Steam the smears with carbolfuchsin Add acid alcohol to the slide Heat the methylene blue

4 Globular protein pores called aquaporins allow while other integral proteins selectively transport ions and other specific molecules 5 What are glycoproteins Glycoproteins are proteins that have carbohydrates attached to them Why are they said to be peripheral Because they are found on the outer surface of cells or membranes 6 What is this molecule What is the function of this molecule water Part 2 Passive Transport Diffusion to pass through In what type of cells is it found 7 Construct a Cell Membrane by answering questions one through ten in the computer based activity

Click through to page 5 1 Identify the following proteins that make up the cell membrane Na 2 Most of the cell membrane is made up of lipids of H O Molecules 0

2 Your lab partner included Gram positive and Gram negative control organisms on their Gram stain of an unknown bacterial species Their chosen controls were Escherichia coli and Bacillus subtilis They try the procedure several times and each time they conclude they are decolorizing too long because both controls end up with mostly pink cells What might you suggest they try and why

Multiple Select Question Select all that apply What are the components of nucleotides fatty acid 5 carbon sugar nitrogenous base phosphate group glycerol

tical Thinking Both crystal violet and safranin are basic stains used to perform simple stains on Gram positive and Gram negative cells This being the case explain how they end up staining Gram positive and Gram negative cells differently in the Gram stain

8 Assume you perform a Gram stain on a culture you know contains both Gram positive and Gram negative bacteria Upor completing the procedure all the cells appear pink What errors may lead to this result Select all that apply a You over decolorized b You forgot to add iodine c You forgot to heat fix the bacterial smears d You forgot to add the counterstain e You under decolorized

2 Congo red is a red acidic stain and methylene blue is a blue basic stain What should be the result of staining a bacterial smear with a mixture of eosin and methylene blue

The polypeptide chain is folded into sheets coils and loops with hydrogen bonds in the structure of proteins

8 1 point How many grams of fiber did Amir consume in his breakfast on Day 2 10 391 grams 12 167 grams 1 gram 7 808 grams

Critical Thinking 1 Compare the sizes of Bacillus cereus Micrococcus luteus and Rhodospirillum rubrum cells or their substitutes as measured using a basic stain Ex 11 and an acidic stain What might account for any difference s

Select the feature s of an acidic dye select all that apply a Alkaline b Basic c Negatively charged d Includes India ink e Lacks a chromogen

Which is the best description of the tertiary level of protein structure O A chain of amino acids with folds and pleats which is additionally folded and held to gether by bonds and interactions between R groups of amino acids O Two or more proteins associated into a complex O A chain of amino acids with no folding O A chain of amino acids folded into pleats and helices held together by hydrogen bonds

Select all that apply The secondary structure of protein folding includes more than one polypeptide alpha helices beta pleated sheets large scale folding of the polypeptide held in place with various types of chemica teractions

Select all that apply A carboxyl group is present in all amino acids and contains a carbon atom two hydrogen atoms a nitrogen atom an OH group

The functional group with the formula COOH is a

A folded fully functional sequence of amino acids is called a n

stion Select all that apply An amino group is present in all amino acids and contains a carbon atom an OH group two hydrogen atoms a nitrogen atom a double bond to an oxygen

Part A Identify A A 7

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

Because phospholipids are partly and partly they are able to form bilayers and these bilayers form the basic structural of biological membranes

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

Phospholipids are composed of two nonpolar nucleic acid O fatty acid polar O polar fatty acid O nucleic acid nonpolar tails and a head group

You work at a biotech company on an enzyme that produces an anti cancer compound from a substrate To maximize production how would you want to manipulate Vmax Km and Kcat

What is a major difference between saturated and unsaturated fatty acids O The presence of a carboxyl group in one but not the other O The number of carbon atoms O The presence of nitrogen in one versus the other O Solubility in water O The presence or absence of carbon carbon double bonds

Part A s this an anterior or posterior view

What is the name of the division of cytosol and organelles as shown in image C cleavage furro Submit Previous Answers Request Answer X Incorrect Try Again t

PartA Identify the structure labeled C B N 1 4 ABF

An amino acid found only in bacteria O A lipid involved in storing carbon and energy that may be saturated or unsaturate O A type of nucleotide found in RNA but not DNA O A type of lipid with a characteristic four ring structure O An amino acid used as a signaling molecule

non dominant hands of nine students Student ID 1 2 8 9 3 4 5 6 7 Dominant 28 0 28 5 29 8 31 0 31 3 32 5 34 1 34 6 Non dominant 21 0 26 2 29 6 27 0 22 5 27 1 29 5 29 7 31 0 34 6 Problem 1 Calculate the standard deviation and standard error for both the dominant and non dominant hand Step 1 Subtract each data value from the mean of the sample set This equals the deviation value Step 2 Square each of the deviation values Step 3 Sum the deviations 2 d Sample 1 data value mean deviation Sample 2 data value mean deviation

What is the main function of a phospholipid O Immune defense O Construction of membranes O Energy storage Q Cell signaling Biological catalyst O Construction of cell walls

Testion 4 Points 2 Identify the type of irony described below A character walks out on stage The audience laughs because he has a Kick Me sign on his back He whips around confused by their laughter O Dramatic irony O Verbal irony O Platonic irony

Sarcasm directed at the speaker him or herself indicating a sense of personal inferiority is known as O deceptive sarcasm O polite sarcasm O brooding sarcasm

a technique drawing attention Oto problems in society often through humor or exaggeration a technique drawing attention Oto problems in society often through violence or threats sarcasm in which the speaker appears to be polite and listeners only understand later that the remark was sarcastic a literary device used to make a O situation seem less important

Choose the correct answer Sarcasm differs from the other forms of irony because O it has a sharper edge O it is kinder O it is funnier

C What characteristic of the phospholipid makes it particularly suited to its function of constructing membranes O It is completely hydrophobic It is amphipathic O It has a ring like structure O it is completely hydrophilic

What explicit idea is Hawthorne making throughout the novel The Scarlet Letter The story focuses on taking revenge on wrongdoers The story is all about the strict O norms followed in the Puritan society The story helps to understand O how the townspeople suffered because of strict Puritan rules The story brings to light how O women were treated in the

enterocoely or schizocoely schizocoely or coelomy acoelomy or enterocoelomy pseudocoely or coelomy Question 39 0 5 points Saved Listen Animals are considered diploblastic or triplobastic depending on wether the blastopore during their development becomes the mouth first or the anus firs True

estion 49 Listen A clade is a grouping of species whereas a taxon is a groupi regardless of the species they belong to True False

Multiple Choice Question B HO HO 0 HO III H HHH H HHHHHHH 1 1 1 C c c c C C C C H I I H H HHH 1 I HH I II HHH C H 1 The fatty acid in C is unsaturated How could it be converted to the straight structure in A and E O Remove the upper hydrogen atoms from carbons 4 and 5 counting from the left wh would remove the kink in the molecule O The structure in C cannot be converted into a straight structure O Remove upper hydrogens atoms from carbons 3 and 6 counting from the left to bal ance out those missing from carbons 4 and 5 O Add hydrogen atoms to carbons 4 and 5 counting from the left which would saturate all carbon atoms

A sponge has the following only cells no tissues Ono gut cavity a blastocoel a coelom Da blastopore is formed during development Question 41 1 point Listen Arthropods have metameres and a bilateral body symmetry O True False