Cell: The Unit of Life Questions and Answers

The intracellular matrix differs from the extracellular matrix in that the latter is located A outside the cell B inside the cell C just outside the nucleus D in all cells

The of a plant allows for pressure to increase but prevents the cell from swelling too much A cell membrane B chloroplast C stalk D cell wall

Which organelle contains rRNA and reads the mRNA to synthesize a protein Ribosome Nucleus Cytoplasm Nucleotide

DNA holds the code for protein lipids carbohydra

Cell membranes could spontaneously trap to create potential A other proteins B protists C other bilayers

How is polarity important in embryonic developmen of plants Chapter 22 Checkpoint 1

The TCA Cycle occurs in which part of the cell OCytoplasm O Mitochondria O Nucleus Cell Membrane

2 Refer to the lac operon diagram below The plus and minus symbols in the Glucose and Lactose columns indicate the presence and absence of each sugar in the media glucose lactose CAP site CAP site CAP site CAP site P P 0 lacZYA lacZYA lacZYA lacZYA lacZYA transcription a Under which conditions state whether glucose and lactose are present or absent would Lac repressor bind to DNA Where on the DNA would it bind b Under which conditions state whether glucose and lactose are present or absent would CAMP CAP bind to DNA Where on the DNA would it bind c Which combination s of Lac repressor and CAMP CAP binding or not binding will allow the strongest lacZYA expression Where would RNA Polymerase bind to the DNA for the strongest lac lacZYA expression d Now think about E coli inoculated into fresh media containing both glucose and lactose at time 0 Which of the conditions state whether glucose and lactose are present or absent in the diagram above would be encountered by those E coli and in which order Justify your answer briefly

3 During translation a new t RNA molecule brings an amino acid into which binding site of the ribosome on the back of the scantron sheet 4 Assume that the anticodon for a certain amino acid is 3 CUA 5 The template DNA sequence that would be consistent with coding for this amino acid is on the back of the scantron sheet

The A most stable enantiomer C minimal configuration is the single shape a protein adopts under physiological conditions B primary structure D native conformation 28

2 Benjamin Franklin was one of the key figures in the founding of the United States He was a statesman and Journalist but he was also an accomplished scientist who created practical inventions to address needs he saw in his community The lightning rod and bifocals are some of his most famous Inventions but he is also credited with Inventing swimming fins His ingenious swimming fin design used two flat rounded pleces of wood that he called palettes To keep the fins in place Franklin had the simple yet brilliant Idea of cutting a hole in each The holes allowed him to easily hook the fins over his thumbs He then grasped the fins with his fingers and used them to push the water behind him as he swam When writing about the experience Franklin noted I remember I swam faster by means of these palettes but they fatigued my wrists Franklin was only eleven years old when he created this invention but age did not limit his Imaginative spirit He also made swimming fins for his feet but those fins were less successful and were difficult to attach quotation from The Select Works of Benjamin Franklin by Benjamin Franklin Part A What does the word ingenious mean in the passage 1 clever O2 elaborate 3 popular 4 superior Part B Which detail from the passage best supports the correct answer from Part A 1 address needs he saw in his community Paragraph 1 O2 two flat rounded pleces of wood Paragraph 2 3 simple yet brilliant idea Paragraph 2 difficult to

Q How How many podobranchia do you find in your specimen FIL FE

What statement about small G proteins is TRUE a The signal transduction protein Ras belongs to the small G proteins b They are heterotrimeric C Their molecular weight is 40 45 kDa d Unlike G proteins they don t possess an intrinsic GTPase activity e They cycle between an inactive GTP bound form and an active GDP bound form

The R2C2 complex of PKA catalytically is inactive Oa The R2C2 complex of PKA catalytically is inactive Ob after the dissociation of the R2C2 holoenzyme OC in the absence of CAMP d Od in the absence of cAMP phosphodiesterase e at high concentrations of CAMP

Most signal molecules a easily diffuse through the membrane bind to a receptor in the cytoplasm and carry out functions in the cytoplasm Ob carry out functions in the nucleus after binding to a receptor in the cell membrane O easily diffuse through the membrane and bind to a receptor in the nucleus Od bind to membrane receptors and transmit information across a membrane without traversing the membrane Oe easily diffuse through the membrane and bind to a receptor in the cytoplasm

Which of the following is the key to selective permeability in the cell membrane A Cholesterol C Glycolipids B Glycoproteins D Proteins

The fluidity of the cell membrane is maintained by A transmembrane proteins B the presence of double bonds in the bilayer C the non polarity of the bilayer D the absence of double bonds in the bilayer

ve brown eyes My dad has brown eyes My mom has blue eyes This means I carry the blue eye gene but you can t tell because you cannot see my Acceptable Formats Give me options

Once mitochondria are engulfed the cell will begin to benefit from production of A ATP C carbohydrates B food D waste

Macmillan Learning the type of reaction it describes equations differ from chemical reaction equations by matching each statement with Nuclear reaction equations the phases of reactants and products may be shown the mass numbers of the reactants and products are shown all atoms on the left side of the arrow appear Answer Bank Chemical reaction equations energy changes of up to several hundred kilojoules energy changes of millions of kilojoules

QUESTION 10 What unique characteristic of O HIV is an RNA virus and R Unlike most viruses Wh

Question Completion Status QUESTION 3 Which of the following is responsih

The region where water is not allowed around the fatty acid tails is called A polar C hydroponic B hydrophoble D hydrophillic

QUESTION 10 Match each of the labels with the part of the microscope 11 Label 1 Label 2 Label 3 Label 4 Label 5 Label 6 Label 7 Label 8 Label 9 Label 10 Label 11 Label 12 Label 13 Label 14 Label 15 Label 16 1 2345 000 6 7 8 9 10 18 12 13 14 15 16 17 A Condenser aperture diaphragm ring B Condenser C Y axis stage motion control knob D Field lens E X axis stage motion control knob F Condenser focus knob G Power switch H Objective 1 Eye piece tube J Revolving nose piece K Eye piece L Coarse focus knob M Stage N Brightness adjuster O Fine focus knob P Condenser centering screws Q Specimen holder R Field aperture diaphragm ring

Identify the structure labeled A B O Capillaries Nerves Artery Vain A

Question A woman with blood type AB marries a man with blood type O Is it possible for them to have children with the same blood type as either of the parents If no what are the possible blood types of their children Create a Punnett square to help explain your answer

Which statement accurately describes the relationship between cytokinesis and mitosis O Mitosis includes interphase and cytokinesis OCytokinesis precedes mitosis in the cell cycle OCytokinesis is not a phase of mitosis but occurs during mitosis Interphase includes cytokinesiand mitosis

You cross a true breeding hairless mouse to a true breeding mouse with curly hair All of the F1s have straight hair You then cross two of the F1 mice together In the F2 generation 18 mice have straight hair 8 mice are hairless and 6 have curly hair 3 marks a What is the phenotype of the aabb mice in the F2 generation 1 mark b Based on the data what is the order of the phenotypes in the pathway 1 mark c What would be the phenotypic ratio if you cross a true breeding straight haired male mouse with a true breeding hairless female mouse 1 mark

One function of cell walls in plants is to prevent the continual increase in the expansion of the cell membrane 1 True 2 False

What will happen to an animal cell placed in a salt water solution O A O B C D The cell will shrink The cell will swell The cell will burst No change will occur

Assume sexual reproduction occurs What is the number of chromosomes in the zygote if the parent s reproductive cells or gametes contain 12 chromosomes each C A B C 48 24 12

own below is DNA chromatogram from an unaffected individual top and an affected individual bottom following Sanger Sequencing What can you conclude about the utation highlighted by the arrow TG G CTACT mind Mw O It is a missense mutation and the affected person is heterozygous O It is an insertion mutation and the affected person is missing a base pair O It is a deletion mutation and the affected person is missing a base pair O It is a missense mutation and the unaffected person is heterozygous unaffected R affected R

Classify each phrase as a descriptor of ABC transporters P type ATPases or both Note that membrane pumps containing ATP binding cassette domains are referred to as ABC transporters ABC transporters substrate and ATP may be bound at the same time P type ATPase transporters catalytic cycle begins with substrate bound but ATP not bound for example the conformation E Ca ATP dependent Answer Bank two ATP binding domains catalytic cycle begins with neither substrate nor ATP bound with the transporter able to convert between closed and open forms Both the multidrug resistance protein P glycoprotein is an example

In the transmembrane helic protein depicted in red below what amino a DINSEMINA A Asparagine B Isoleucine O

QUESTION 13 Endosomes can mature and transform into this other orga Plasma membrane Endocytic vesicle Early endosome Maturation Late endosome 00

to promote glycogenolysis Put the steps of the signal transduction pathway in order from the releasing of glucagon into the blood to the promotion of glycogenolysis Glucagon is released into blood Glycogenolysis is promoted Answer Bank Activated G protein activates adenylate adenylyl cyclase Glucagon binds extracellulary to G protein coupled receptor G protein releases GDP and binds GTP Adenylate cyclase converts ATP to CAMP Phosphorylase kinase phosphorylates glycogen phosphorylase

Questions 1 Compare and contrast the formation of the two daughter cells in plant and animal 2 How many daughter cells are produced from mitosis in animals

Calculate the Time min spent in Each Phase of time spent in the phase X 720 minutes length of time for 1 cell cycle for onion root tip cells Time minutes in the phase Calculate the Mitotic Index for the Onion Root Cells Number of cells in P M A T Total Number of Cells ble 2 Cell Cycle Phases in Onion Root Tip Cells Number of cells in the view of Cells in each Phase Time min spent in Each Phase Interphase Count of all Cells in View 40X lens Prophase Metaphase Anaphase Telophase Total 60

to match with their corresponding category of checkpoints The G Checkpoint The G Checkpoint The M DNA is checked to make sure replication occurred correctly The cell is irreversibly committed to dividing Also known as the spindle checkpoint Occurs duri Ensures the microtubules are connected to the kinetochore The cell may enter the G phase Growth factors cell size and RNA damagn prior to replication

Drag and drop the events of cell division to classify their occurrence in animal or plant cell or both Animal Cell Plant Coll Occurs in both plant and animal cells Separation of the cytoplasmic components into two new daughter cells The Golgi apparatus form vesicles containing cellulose and vesicles migrate to the metaphase plate A cell plate forms between the two newly formed cells A contractile ring of actin filaments forms at the metaphase plate A cleavage furrow forms between the two cells

Drag and drop the types of cells to match with their correct description A multicellular haploid life cycle stage that produces gametes Specialized cell line that produces eggs or sperm A multicellular diploid life cycle stage that produces haploid spores by meiosis Sporophyte Gametophyte Germ cells

The removal of all life forms from inanim sterilization decontamination degerming disinfection

Part 1 Multiple Choice When vertebrate eggs are developing they go through the first meiotic division and then pause at metaphase of the second meiotic division until fer tilization occurs before completing the second mei otic division MPF a protein regulates the pause and continuation of meiosis after fertilization Analyze the graph and answer questions 18 20 MPF Levels During Melosis Fertilization First meiotic Second meiotic division division Metaphase arrest 18 MPF is at high levels A at the beginning of the first meiotic division and at the beginning of the second meiotic division B at the beginning of the first meiotic division and at metaphase of the second meiotic division C only at the beginning of the first meiotic division D only at metaphase of the second meiotic division 19 MPF also slows the beginning of the first meiotic division to allow the egg to grow Therefore at this time MPF levels are A unchanged B low C high D high and low 20 Which of the following statements best describes the relationship between MPF and the slowing of meiosis in the developing egg A When MPF is high meiosis progresses B MPF has no effect on slowing meiosis C MPF is necessary for mitosis D When MPF is high meiosis slows down Study the diagram and answer questions 21 23 Gastrula 5 hours after fertilization Ectoderm DOS 18 hours 20 hours after after fertilization fertilization Mesoderm Yolk cell A heart tail eyes head B heart tail fins head 21 The cell layer from which the heart of the zebra fish develops is the A endoderm C mesoderm B ectoderm D yolk sac 22 One day after fertilization the zebra fish has C no internal organs D two cell layers in a gastrula 23 Twenty hours after fertilization the heart is C four chambered D ectoderm 1000 A two chambered B not divided into two chambers 1 day old embryo Heart or heart primordia MAN CHLIES

You found 85 colonies on a plate with the 10 dilution The volume of bacterial suspension plated was 0 1mL What is the number of CFU per milliliter of original culture a 8 5 x 10 CFU ml b 85 CFU ml c 8 5 x 10 CFU ml d 8 5 x 10 CFU ml

B Question 2 Itranscript Describe these structures O more than one a tetrad 4 B

All the following are types of substrates used in mammalian cell culture to potentially increase cell adhesion except O Tissue culture O Collagen Poly L lysine Phenol red

Dashboard My courses SC BIOL1000 N Biology I Cells M

Distinguish between a prokaryotic cell and a eukaryotic cell by selecting the accurate statement below O Only eukaryotic cells have a cell membrane O Only eukaryotic cells have DNA enclosed in a nucleus Only prokaryotic cells have mitochondria O Only prokaryotic cells have an endoplasmic reticulum

Self regulation is not useful for goal setting O the result of self efficacy expectations and goal setting the result of goal setting and emotional arousal the result of emotional regulation expectancies and goals

7 What would the PCR product be for the following DNA sequence at the end of one cycle of amplification Indicate the polarities of the product in your answer NOTE This sequence does not start with AUG 3 ACC CGA TAC GGA GTC AAA TTT 5