Cell: The Unit of Life Questions and Answers

Is an offer which llows you to get some of the money you paid refunded to you after you buy an item O coupon O rebate gift certificate

QUESTION Which of the following ideas are supported by paragraphs 24 36 Select TWO correct answers SELECT ALL THAT APPLY The government seems to effectively limit the intelligence and strength of George and others like him The government permits exceptional people like George to be themselves at home but not publicly Overall the people in this society seem willing to defend policies from the government that suppress them Overall the people in this society allow exceptional people like George to stay alive if they work for the government

A back up copy is also called O sorting O ribbon

Which is a cordlike nonelastic white fibrous band of connective tissue OA Bursa OB Aponeurosis C Retinaculum D Tendon

PART B Which quote from the text best supports the answer to Part A A B C D minimizing foreign involvement was still the United States policy John Quincy Adams the Secretary of State in 1821 declared America to be the well wisher to the freedom and independence of all Paragraph 3 And over time it showed how they can be changed in response to changing circumstances such critical facts as its political stability the growth of the economy and its military readiness Paragraph 7 As long as our country was preoccupied with building up these strengths the Monroe Doctrine and American foreign policy remained largely the same Paragraph 8 he supported the so called Platt Amendment that compelled the Cuban government to let the U S to intervene unilaterally in Cuban affairs and gave Washington a lease on two naval bases Paragraph 19

Which of the following is FALSE in comparing prophase I of meiosis and prophase of mitosis O A spindle forms in both The nuclear envelope disassembles in both O Each chromosome has two sister chromatids O The chromosomes condense in both O The chromosomes are in homologous pairs

2 Organisms whose cells do not have a nuclei are called O Autotrophs O Eukaryotes O Prokaryotes Heterotrophs 3 Organisms whose cells have a nuclei are called

All the statements below are correct regarding ATP ATP serves as the main energy shuttle in cells ATP drives endergonic reactions in the cell by the enzymatic transfer of the phosphate group to specific substrates The regeneration of ATP from ADP and phosphate is an endergonic reaction True or False False True

1 1 Which of the following is correct O Some living organisms are made up of cells others are not O All non living structures are made up of cells O All living organisms are made up of cells O Some non living structures are made up of cells

An atom that has an equal number of protons and electrons O is a neutral atom O is a cation O is an anion O is chloride ion O is a hydrogen ion

In routine microtomy what thickness are the standard tissue slices made by a microtome a 4mm b 0 04mm c 0 4mm d 0 0004mm e 0 004mm Which of the following cells of the immune system synthesises antibodies B cell b Plasma cell a Oc Thelper cells d Regulatory T cells e Memory T cells

Which of the following microscopy techniques would be most appropriate to characterise Langerhans cells in the epidermis of the skin a High power haematoxylin and eosin b Transmission electron microscopy c Low power haematoxylin and eosin Immunohistochemistry d e Scanning electron microscopy

Biology Match the following letters with the numbers below 1 Steroid hormone type I 2 Steroid hormone thpe II 3 GPCR 4 JAK STAT 5 RTK 6 Wingless 7 Hedgehog A Ligand receptor is cell surface transmembrane protein B Pathway common to cytokines C Pathway common to growth factors including EGF IFG D Pathway functions in isolation of all others E Signaling pathway results in differential gene expression F Ligand is hydrophobic G Ligand first identified for role in Drosophila embryogenesis H Key step in pathway is activation of adenyl cyclase to produce CAMP 1 Pathway occurs only in Drosophila not observed in mammalian cells J Pathway includes Ras Raf Mek Erk

Which of the following option is NOT available in the Display for Review box All Markup

2 Now that you have examined actual fern spores by viewing their surfaces imagine cutting a fern spore in half right through the middle i e a median cross section Then if you examined the cut portion of the spore with the compound microscope what structures would you see Indicate from the following list which components are part of an adult ungerminated spore Place an X in the yes column if the component is part of a spore Place an X in the No column if the component is not part of a spore Then for each item you selected as a spore component list its function 3 pts Spore component Yes No Function if part of a spore Cell membrane Cytoplasm Embryo Gamete Lignin Nucleus Plasmodesmata Chloroplasts Primary cell wall Secondary cell wall Sporangium Spore wall Sporocyte Tetrad Vacuole 2 3

5 Why is it important for cells to have buffers

What directly supplies the energy needed to actively transport sodium ions across the plasma membrane of a cell A ATP B DNA C enzymes

Escherichia coli replicates by which process O Budding O Binary fission Meiosis O Mitosis Hyphal fragmentation

The component of the bacterial cell wall that is responsible for strength and rigidity is Teichoic acid Chitin Lipopolysaccharide Peptidoglycan Cellulose

11 Inhibitory phosphates that prevent M cdk from working are removed by

transport or passive transport What is the difference between the two 0 00 0 31 A C B Speed 1x W D Paused Active transport requires the cell to form vesicles while passive transport requires the use of membrane pumps Active transport requires the cell to expend energy while passive transport does not

10 During metaphase of mitosis the identical chromosomes that resulted from DNA replication are called what A tetraploids I B dyads C sister chromatids D daughter chromosomes E centromeres

The rough endoplasmic reticulum and Golgi apparatus work together in eukaryotic cells What is one way that the rough endoplasmic reticulum assists the Golgi apparatus A B C D It assembles nucleic acids from monomers It breaks down old damaged macromolecules It packages new protein molecules into vesicles It determines which protein molecules to synthesize

Because all plants have a diploid adult plant that morphologically looks identical to the adult haploid plant all plants are considered oogamous True False Question 78 1 point Listen Organelles and other cellular components move through the cytoplasm of a living plant cell through the activities of chemiosmotic proton gradients microtubules microfilaments and motor proteins ATD

28 M 29 hoold 100 f During what phase of mitosis do centromeres divide and the chromosomes for sister chromatidsi respective poles Oa Centromere Ob interphase Oc Anaphase Od Metaphase During which stage of Translation does the mRNA molecule attach to the small nibosome subunit O Termination Ob Intation Oc Polyemization Od Elongation be dang

Read the excerpt from chapter 2 of Night by Elie Wiesel There was a woman among us a certain Mrs Sch chter She was in her fifties and her ten year old son was with her crouched in a corner Her husband and two older sons had been deported with the first transport by mistake The separation had totally shattered her How does the word shattered affect the tone of the excerpt O The word suggests a tragic tone The word suggests a fearful tone The word suggests a pathetic tone The word suggests a nervous tone

The diagram below shows the basic structure of a cell s plasma membrane What is the primary function of lipid molecules in the plasma membrane Phospholipid bilayer A B C D to provide an energy source for most cell activities to provide a substrate for enzyme activity in the cell to provide a place to collect and store waste products within the cell to provide a barrier to the movement of substances in and out of the cell

Which of the following is are true regarding gram positive and gram negative bacteria 1 Gram positive bacteria have a thick peptidoglycan layer II Gram negative bacteria do not have peptidoglycan in their cell wall III Gram positive bacteria stain purple IV Gram negative bacteria stain pink III and IV only II and III only I and II only I only I III and IV only

1 Please select all true answers Formins are regulated by Rho GTP which binds the RBD domain and causes the Formin to open up exposing its FH1 and FH2 domains Arp2 3 complexes nucleate actin branches but diffuse before being incorporated into the structure themselves Arp2 3 dependent actin assembly can power the movement of vesicles from the plasma membrane into the cell Formins contain FH2 domains which bind G actin and coordinate the nucleation and polymerization of microfilaments FH1 and FH2 domains have the same biochemical function but are named differently to indicate their distance from the RBD domain

Describe how agonist concentration response curves can be used to rank receptor agonists by potency

Which of the following are found in all living cells Onucleolus O nuclear pore nuclear envelope O DNA O nucleus

Bonus 2 points What is being depicted in this cartoon HI FRIEND D 8 You KNOW MAYBE I M OKAY WITH THIS ATP WOAH WOAH WOAH C ASP AT

Which of the innate defense mechanisms can lyse bacteria and mark cells for phagocytosis View Available Hint s O natural killer NK cells O interferons complement proteins O cytokines

F actin filaments a Are composed of G actin dimers O b Polymerise at the same rate in both directions from both ends of the filament O c O d Are composed of polymerized G actin monomers wound around each other in a helix Are oriented similarly to DNA with strands helical and antiparallel to one another e Are composed of four linear strands Clear my choice

The functions of a particular cell structure are described below It allows waste to exit the cell It allows chemicals required for cellular respiration to enter the ce It regulates movement of water into and out of the cell Which cell structure do these statements describe A C 0 00 0 23 lysosome Speed 1x

Which nutrients provide the body with energy Describe the purposes of vitamins and minerals Compare Contrast chemical digestion and mechanical digestion What is the importance of enzymes during digestion What is the purpose of the small intestine Large intestine autoutie bi What materials are filtered from the blood in the kidney and broneer What are some ways that excretion can be inhibited te

2 Asthma is a condition in which a stimulus causes the pathways of the lung to become constricted so that the volume of air entering and leaving the lungs is severely diminished An experiment was performed where the tidal volume amount of air exhaled during one breath and saliva were collected from guinea pigs that were exposed to air containing different essential oils some of which have been linked to asthma Salivary samples were collected hourly for a 5 hour period The level of 8 Valerolactam was also measured to assess its use as a biomarker for asthma All levels were averaged for each experimental group and the data were reported in the tables below Table 1 Mean levels of Tidal flow and Salivary 8 Valerolactam b c d Essential oil Tidal flow ml k B Salivary 8 Valerolactam levels ng mL Unscented 5 8 0 1 Essential oil Tidal flow ml k B Salivary 8 Valerolactam levels ng mL Unscented 0 2 Pine 10 pp B 5 3 0 1 0 3 Pine 100 pp B 5 4 Pine 10 pp B 0 5 0 1 1 Table 2 Simplified Estuary Model SEM for Tidal flow and Salivary 8 Valerolactam Pine 100 pp B 0 1 Juniper 10 pp B 2 1 0 2 122 Juniper 100 pp B 1 4 Juniper 10 pp B 0 1 20 324 Juniper 100 pp B 0 3 27 a Identify which organelle within the cell would be the most closely affected by asthma and explain how a major process occurring within that organelle would be affected Construct a bar graph showing the Tidal flow for the control and the highest concentrations of both pine and juniper Show error bars as 2x the Simplified Estuary Model SEM Biomarkers are a way for lab clinicians to test patients for an ailment Explain why Salivary 8 Valerolactam could be used as a biomarker for asthma Predict the effect of a 50 50 essential oil mixture containing the highest levels of pine and juniper measured on

How many unique 3 nucleotide codons can we make with 4 different nucleotides 20 61 64 16

What would you expect to be encoded in the Eukaryotic Protein kinase A mRNA A signal peptide A nuclear localization signal Both signals above No localization signal

23 Which process will require ATP exocytosis gas exchange or osmosis 24 Which of the following is the best way to tell if equilibrium between two solutions has been reached A The volume of water is the same for both solutions B The solute concentration is the same for both solutions C The pH is the same for both solutions D There is no further net diffusion to either solution

25 Which characteristic of a cell will be most important to creating a high rate of simple diffusion of a solute into or out of that cell A The SA V is high B The concentration of solute inside the cell is high C The production of ATP is high D The quantity of organelles in the cell is high

Biology Why is the OUTSIDE IN hypothesis more complicated than the INSIDE OUT hypothesis

How are the linkage scores from multiple families combined A Somatic Mutation b environment C Heteroplasmy D Epigenetics

C 0 00 0 19 Speed 1x A plant cell leaf chloroplast rose bush U B chloroplast plant cell leaf rose bush chloroplast leaf plant cell rose bush lo Paus

desmosomes to O link cytoskeletons of adjacent cells together O communicate between cells transport ions and small molecules from one cell to another O prevent pathogens from entering the cell

each organelle or structure with its definition or function Composed of phospholipid bilayer described as fluid mosaic surrounds contents of cell Larger external appendage allowing cellular movement Lacking ribosomes involved in synthesis of lipids hormones detoxification or calcium storage depending on cell type Composed of subunits responsible for protein synthesis Contain chlorophyll site of photosynthesis Stack of membranous sacs for processing proteins and lipids Choose Choose Golgi apparatus Ribosomes Flagella Nucleus Chloroplasts Lysosomes Mitochondria Chromosome Rough endoplasmic reticulum Plasma membrane Smooth endoplasmic reticulum Cell wall Choose Choose

Mitochondria contain their own DNA and ribosomes for protein synthesis of a number of proteins they require However a larger number of proteins are actually coded for in the nucleus of the cell are synthesized in the cytoplasm and are then transported to mitochondria Based on what you know about protein transport processes how do you think these proteins most likely make their way to mitochondria O They are marked by signal sequences that direct them to the mitochondria O Simple diffusion O Ribosomes attach directly to mitochondria and synthesize the proteins into their interior O Random movement of transport vesicles 2 pts D

Integrin connects collagen fibers of the extracellular matrix to actin filaments of the cytoskeleton As such integrin is a transmembrane protein O peripheral protein cytoplasmic protein extracellular protein

Which of the following are found in cells of all organisms Please choose all that apply OCytoplasmic membrane DNA RNA Cell wall O Mitochondria Nucleus

A cell with a K concentration of 0 3 eq L is placed into a solution with a K 1 concentration of 0 2 eq L It is assumed that the K can pass through the cell membrane the K transport protein is open Answer the following true or false questions a true b false K will diffuse through the membrane down its concentration gradient due to Kinetic Theory Movement of a solute through the membrane is called dialysis K1 will move out of the cell