Cell: The Unit of Life Questions and Answers

QUESTION 3 The chemical bond connecting one nucleotide with the next along one strand of a DNA molecule is called a glycosidic bond O hydrogen bond O phosphate bond O phosphodiester bond O peptide bond QUESTION 4 Chargaff s rules for the pairing of nitrogen bases is OA C and G T O A T and G C 04 6 and C T

If 16 of the nucleotides in one strand of a DNA molecule contain the base G what percent of the nucleotides on the complementary strand will also contain the base G O 16 O 8 O 34 32 O Impossible to determine from the information given QUESTION 24 Genetic analysis indicates that an unknown organism contains a gene that codes for a defective form of telomerase Based on this information alone you can conclude that this organism O is prokaryotic Ois eukaryotic O has unusually long telomeres O has an increased risk of developing cancer

Intracellular receptor Hydrophilic ligand Transmembrane receptor Hydrophobic ligand Cytoplasm Extracellular environment Prov of 36 110010011001 FIT Next bo Signal transduction pathway Cellular response Signal transduction pathway Cellular response

It is found that the enzyme X hydrolase also known as formerlyknownastwitter hydrolase is accumulating in cells only when substance X is added to the medium This phenomenon is most likely an example of gene regulation O negative inducible O positive O positive negative O repressible

If the neuronal membrane was stimulated in the presence of a drug that specifically inhibits sodium channels the membrane would O depolarize for one stimulus but not for a second stimulus depolarize but not repolarize not depolarize become permanently hyperpolarized

are required to maintain axons O maintain cell structure O are part of the structure of cilia are required to maintain axons

The endoplasmic reticulum is a site for degradation of foreign material brought into the cell by phagocytosis ON linked glycosylation of polypeptides potassium storage in muscle cells drug detoxification by catalase

Can you make two question about neurons and cell signaling and answer it in ur own wrd un 2 paragraph I

Can you please write a takeaway message about Entrepreneurship and Innovation

3 You re hanging out on your sofa not being very active so the concentration of ATP in your skeletal muscles rises ATP concentrations are held in tight equilibrium in most living systems so your body does not allow this increase However your body also does not want to lose all of the energy that is currently being held in these ATP molecules What will your body do to lower the ATP concentration while also retaining the energy held in that ATP molecule hint The answer is has nothing to do with sugars or fats 4 The membrane is known for self assembling but it is also known for only self assembling into a sphere and not into a flat plane Explain why the membrane is able to self assemble and why this self assembly results in a sphere and not a flat plane

2 How does the structure of the Smooth Endoplasmic Reticulum contribute to its specialized roles within cellular processes

Can you please make two question about smooth Endoplasmic Reticulum and then answer the questio you make

exist between the Rough Endoplasmic Reticulum RER and the Smooth Endoplasmic Reticulum SER

Can you please make two question about endoplasmic reticulum and ribosomes contribute to the synthesis

I Can you please make two question about Endoplasmic Reticulum

Why is the correlation between endoplasmic reticulum and golgi apparatus important and could we survive without either one of them

Match the following genetic diseases with their expression allele Sickle cell anemia Phenylketonuria Huntington disease Hemophilia Hypercholesterolemia Tay Sachs disease QUESTION 2 Match the genetic disease with it s most common symptoms Muscular dystrophy Cystic fibrosis A X linked recessive B Recessive C Dominant A Blood clotting issues B Brain tissue gradually deteriorates in middle age

What role does the Smooth Endoplasmic Reticulum play in maintaining the plasma membrane

Which glial cells participate in the formation of the blood brain barrier microglia oligodendrocytes astrocytes ependymal cells Question 22 1 point Which glial cells makes cerebrospinal fluid microglia ependymal cells oligodendrocytes

Upper motor neurons are fibers association projection commissural Question 16 1 point The hippocampus is part of the basal nuclei O reticular formation cerebral cortex

Long tube holds ocular lens and revolving nosepiece O Diaphragm O Arm Obody tube O base

This protective system includes structures spaced along vessels that trap infectious organisms or foreign particles resulting in Swollen glands that indicate that the body is fighting an infection Components of this system include select all that apply Olymph nodes gall badder the spleen appendix the liver erythrocytes pancreas Question 17 3 points

Which disordered eating pattern is characterized by the person eating huge servings of certain foods usually carbohydrates without efforts to remove the food eaten or otherwise counter the results of that eating session anorexia nervosa guttony binge eating disorder bulimia

O 14 Explain the importance of the suppression of replication between meiotic divisions

9 Differentiate between the events of meiosis I and meiosis 2

O 8 Describe the process of crossing over during prophase 1

2 Distinguish between germ line and somatic cells

0 6 Distinguish between homologues and sister Chromatics

5 Identify the levels of chromosome packing

ribozyme an enzyme that synthesizes RNA as part of the transcription process an enzyme that catalyzes the association between the large and small ribosoma subunits an enzyme that uses RNA as a substrate an RNA with enzymatic activity

At what point of translation is the amino acid chain formed by amino acid binding through peptide bonds Initiation O Elongation O Termination O Mutation

What is the correct order in which a protein is transported through the endebrance system

What happens to proteins made in the endomembrane system

The most complex and important part of a cell is arguably the transmembrane proteins ribosomes cell membrane as a whole surface proteins

Acute toxicity fatal or toxic Acute toxicity harmful Aquatic toxicity Carcinogen Corrosive to metals Explosives Eye damage Flammables Gases under pressure Irritant skin and eye to the correct GHS category Choose Choose Choose Choose Choose Choose Choose Choose Choose Choose

Drag each label to the correct location on the diagram of a tetrad Labels i Drop Zones Sister chromatids Centromere Synaptonemal complex Kinetochore Homologues Reset All

The taxonomy classifications for what used to be Kingdom Protista has changed dramatically in the last decade What characteristics were problematic with the old system

List the 4 types of nutritional diversity associated with prokaryotes and discuss the energy sources of each and the advantages of each type based on the organisms environment

For each one of the eukaryotic organelles structures we discussed in class provid description its function and WHY it is important fo the cell 1 Nucleus 2 Ribosomes both free and membrane associated 3 Rough endoplasmic reticulum 4 Smooth endoplasmic reticulum 5 Golgi apparatus 6 Lysosome 7 Peroxisome 8 Transport vesicle 9 Vacuole 10 Mitochondrion 11 Chloroplast 12 Cytoskeleton and each of its parts microtubules actin filaments and intermediate filaments

A molecule of DNA is comprised of 38 A 22 T 24 G 16 C What can you conclude about this molecule from this information It is single stranded OIt is double stranded It is non coding DNA

B Based on what you know about how kinesin motor activity is regulated by ATP ADP and nucleotide release what do you think would happen if you added only ADP to this experiment rather than ATP Would the kinesin ever bind the MT Would you observe the kinesin walking on the microtubule The movie 17 7 in the movies folder in Moodle might be helpful for this question

Why did DNA repair need to occur

MC 1 point Which of the following statements correctly matches the lipid function example Answers A D A triacylglycerol structure hyaluronic acid B phospholipid hormone testosterone C steroid structure cellulose

During base excision repair Endonuclease breaks ionic phosphobiester Ohydrogen van der waal interactions bond

How many primers are required for DNA polymerase to build the leading strand 3 5 2

O part of the structure of lysosomes the protein machinery assembled for DNA replication the protein machinery assembled for transciption required for assembly of ribosomes on mRNA

Even with the most recent advances in microscopy it is impossible to image atom O True O False

1 The figure below depicts the formation of peptidoglycan in a Gram positive bacterium IK Staphylococcus aureus As shown in the figure this process is mediated by the sequential action of Enzyme 1 and Enzyme 2 10 points I II amino acid polymer disaccharide Enzyme 1 transglycosylase cefazolin growing peptidoglycan Enzyme 2 Transceptdate III mature peptidoglycan a Provide the names for the items labeled I and II in the disaccharide and for the item labeled III in the mature peptidoglycan b Describe the roles of Enzyme 1 and Enzyme 2 in the process

1 Mia never packs her bag 2 She usually drinks juice with breakfastrue False True False 3 She sometimes brushes her hair 4 She never tidies up before school True False 5 She always gets up at seven o clock True False 6 She sometimes puts on her shoes in her bedroom 2 Look read and write True False X True False wakes up Adam always even at the weekend He in the bathroom before he has breakfast but he He get up at 7 00pack bag put on shoes drink juice X tidy up brush hair in the morning Adam with his breakfast then he front door at 7 30 in the mornint Mia 7

Microtubules contribute to intracellular transport and mitotic spindles True False