Biology Questions

Which process results in decreased variation A Meiosis B Mutation C Sexual reproduction D Natural selection

The image shows a human karyogram X XXK 1ampal From which person was the karyogram obtained A A female with Down syndrome K XA male D A male without Down syndrome B A female without Down syndrome A male with Down syndrome V

What is a recognition feature for both of the plant phyla indicated du Filicinophyta Angiospermophyta A B C D S Produce seeds Produce spores No vascular tissue Vascular tissue Produce seeds Produce flowers Vascular tissue Produce spores

Which statement best describes how evolution occurs A Species which produce the most offspring are favoured by natural selection B Mutations in somatic cells are passed on to offspring C Natural selection decreases the frequency of unfavourable characteristics D Changes in species lead towards greater complexity over time

Which is an example of evolution by selective breeding A Selection of prey animals that can run faster than their predators B The variation in the size of different breeds of dogs C The tendency during breeding for birds to produce more offspring than will surv D Some female spiders only breeding with males which make the right signals

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

Question 4 Which of the following regulatory elements are Cis acting DNA methylation O Transcription factors TATA box miRNA Euchromatin Question 5 20 pt 20 pi

O miRNA Histone modification factors Question 3 Methylation is involved with DNA that does not have coding regions O True O False 10 pts Question 4 20 pts

Question 6 Which of the following sentences are correct about regulation of gene expression in Eukaryotes O gene expression might vary across different cell types tissues 20 pts O gene regulation in eukaryotes is more complex than in prokaryotes regulation in eukaryotes depends on activation inactivation of the Operon region O gene regulation in eukaryotes have cis and trans regulatory elements controlling gene expression gene regulation in eukaryotes only occurs

Question 5 What is DNA methylation Modifications that control DNA transcription typically due to environmental factors 20 pts Recent mutations inherited in the DNA Genomic regions that control the expression of distal genes O Modifications of the N terminal tails of histones during translation

FITB 1 pt Using the E value method calculate the quantity of NaCl in g required to prepare the following prescription Rx Proparacaine HCI Benzalkonium Chloride Sodium Chloride Sterile Water Make isoton soln Answers 1 1 1 1 0 02 qs Answer 1 g Round to 3 significant figures qs 150 mL

Ecological Succession Use information you have gained from the Ecological Succession reading to help you fill in the boxes below Primary Succession Secondary Succession homew Define it Exemplify it Circle whether each example is an example of primary succession or secondary succession The growth of weeds in an area after a forest fire The growth of pioneer plants where lava has cooled and hardened The growth of Date and crops primary succession primary succession primary succession Activity L secondary succession secondary succession secondary succession

Y Part A Which structures are highlighted Dorsal roots of spinal cord Submit Previous Answers Request Answer

Anterior roots of spinal nerves are functionally

B A Identify the structure labeled G C D E F E F G H

12 13 14 8 11 15 10 Labeling Activity 1 1 2 9 3 5 17 16 18 31 area 30 29 28 area 27 area 26 22 19 23 24 21 25 20 1 2 3 4 5 6 7 22 23 24 25 26 27 28 29 30 31 8 9 10 11 12 13 14 15 16 17 18 19 20 21 liver

The end of a linear chromosome is shown below DNA The hTERC the human Telomere RNA component that resides within the human telomeric protein oval hTR is also depicted Combined the hTR and the hTERC comprise the ribonucleo protein that is Telomerase 1 Name a gene that if inactivated could lead to immortalization of cells and how would accomplish that 2 Name a gene that if over activated could lead to the immortalization of cells and how would accomplish that 3 Redraw the linear chromosome with two additional telomeric repeated added to it Please underline bold color the new additions differently form the sequence and differently from each other so it can be differentiated from the existing sequence 3 hTERC 5 GGTTAGGGTTAGGGTTAG 3 3 CCAAT 5

Picture Are the forces balanced or unbalanced What is the NET force What direction is the NET force acting Balanced Unbalanced 25 N ON 25 N 10 N r 25N 25 N 50 N 25 N r 1 1 I 35N To the right 25 N To the left

1 What websites did you use to find meteorites for sale 2 How do you know the meteorites are real What is the policy or statement of authenticity Number Name Price Type of meteorite Where found Size and other details nohy 4 and list their characteristics 1 2 4 Which meteorite out of the 4 do you like the best and why 6 Add 2 cool meteorite pictures below 3 Table 3 4 5 If you were given lots of money to buy an expensive meteorite which one would you buy and why Describe it below

3 A a da verilen molek llerden hangisi hidroliz tep kimelerinin r n olamaz A Fruktoz BY Amino asit CY Ya asidi DKarbondioksit E Glikoz

What is the phenotype ratio of the following cross BbYy X BbYy 4 1 9 3 3 1 2 2

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

Describe each ART ELEMENT that you see in the artwork Start with the most prominent element and how that element is primarily used in the artwork Provide specific examples and include as many as you can For full credit answer at least 4 of the following questions with a minimum of one complete sentence each Elaborate on your answers as necessary for a thorough description 1 LINES Do you see lines What kind of lines Vertical horizontal curved straight thick thin long short etc 2 SHAPES Do you see shapes What kind of Shapes Circular square triangular biomorphic shapes of specific objects etc 3 TEXTURE Do you seek texture What kind of texture Rough shiny wood skin water dots stripes etc 4 VALUES Light and Dark Do you see lights and darks What do they look like Light dark medium high contrast blended etc 5 COLORS Do you see color Bright dull red yellow blue black white etc Section 3 Design Qualities 25 points

Which steps of the citric acid cycle correspond to each stage Drag the appropriate items to their respective bins step 1 step 2 The first stage step 3 step 4 step 5 step 6 The second stage Reset He step 7 step 8

For each statement choose whether it applies to rods or cones 1000 do not work in the dark yield color vision give high resolution vision yield black and white vision cannot work in bright light present at the fovea centralis yield fuzzy vision 1 rods 2 cones

List the optic pathway components in order as visual information moves from the retina to the visual cortex optic radiation optic chiasm optic tract optic nerve

A reaction with a AG of 1 6 is endergonic and work needs to be done in order for the reaction to proceed exergonic and work can be done with energy released from the reaction endergonic and work can be done with energy released from the reaction exergonic and work needs to be done for the reaction to proceed

Question 9 The oxygen used during aerobic respiration phosphorylates ATP attracts electrons forms CO2 moves protons

The hydrolysis breakdown of ATP to ADP is a n reaction unfavorable exergonic endergonic

As an electron moves closer to oxygen in the electron transport system the electron s free energy increal es stays the same equilibrates

In eukaryotes the electron transport chain is located in the outer membrane of the mitochondrion inner mitochondrial membrane cytoplasm of the cell mitochondrial matrix

Question 7 The oxidizing agent during glycolysis is NAD pyruvate NADH

ATP performs work by direct transfer of a phosphate group breaking down completely into all of its component parts releasing a sugar molecule to its surroundings hydrolyzing the molecule it is acting on

D Question 2 How many total molecules of ATP are produced during glycolysis 01 2 0

Substrate level phosphorylation describes the synthesis of ATP by build up of hydrogen ions across a membrane how ATP drives the work of the cell the direct synthesis of ATP from a phosphorylated substrate how ATP is produced by oxidative phosphorylation

What healthcare or community setting would you most prefer to enter as a Personal Support Worker Provide details What additional education would you like to engage in to enhance your Personal Support Worker capabilities and knowledge Provide details and reasoning Are you considering further post secondary education explain

18 Species diversity in arthropods was studied in a certain location Data on the impacts on species diversity from organic versus conventional agriculture are provided in the table Arthropod Type Carabids Arachnids Myriapods Hemipterans Species Diversity Number of Species Conventional Agriculture 10 8 48 17 Organic Agriculture 13 9 52 19 Judging by percentage increase which arthropod type provides the strongest evidence for the claim that organic agriculture results in greater species diversity

Patient Marybeth Sherks DOB 05 20 1986 Equivalents Glass 180ml Cup 120 ml Time 0800 hr 1000 hr 1200 hr Patient Name Date of Birth Date Time Dessert Dish 120ml Bowl 150ml Activity 1 glass of orange juice Bowl of cornflakes Urine 200ml Coffee 1 cup glass juice dessert dish pureed fruit 2 crackers dessert dish of jello Urine 250ml bowl of tomato soup Intake Output Gateway Conva Intake Outpu

The Endangered Species Act was passed in 1973 but many people today feel that endangered Species Act has not done enough to protect endangered species from human impacts Do you think that it needs to be updated

GUU GCU GUC GCC GUA Val GCA Ala GUG GCG GAU GAC GAA GAG AUG Met or Start UAG UAA and UGA Stop Asp Glu This is the normal messenger RNA for MC1R in dogs is Glu Ser Phe Lys Asp Arg protein is too short Ser Gln Glu Leu Arg Lys protein is too long Glu Ser Phe Lys Asp Arg protein is too long GGU GGC GGA GGG Yellow Labrador Retrievers produce this mRNA transcript Gly 5 AGCCAGGAACUUCGAAAG 3 Dept Biol Penn State C2002 5 AGCCAGGAACUUUGAAAG 3 UCAO What is the normal sequence of the polypeptide that is produced and what type of mutation is seen in yellow labs

nucleotide substitutions synonymous silent no aa change nonsynonymous aa altering missense from one aa to another aa haemoglobin A mutation occurred in the MC1R gene A mutation occurred in the MC1R mRNA nonsense sense codon Stop MC1R Based on your knowledge of mutations and protein synthesis which of the following is true of now a mutation can result in yellow coat color in Labrador Retrievers Select all that apply A mutation in the DNA results in an alteration of the mRNA The normal MC1R allele results in either black or brown fur color in Labrador Retrievers The mutant MC1R allele results in yellow coat color in Labrador Retrievers The mutant MC1R allele results in a stop codon replacing an amino acid codon The shortened MC1R gene product that results from the mutant allele is nonfunctional Because yellow Labrador Retrievers have this mutation they are less healthy then black or brown coated Labrador Retrievers Mutations are bad for the organisms that inherit them

The melanocyte stimulating hormone receptor gene MC1R codes for one of the key proteins involved in regulating mammalian skin and hair color The normal allele for MC1R in Labrador retrievers and other dogs has this as part of its sequence on the CODING DNA strand What is the sequence of the transcribed mRNA O 5 AGCCAGGACTTCGAAAG 3 5 CTTTCGAAGTTCCTGGCT 3 5 AGCCAGGAACUUCGAAAG 3 5 AGCCAGGAACTTCGAAAG 3 O 5 CUUUCGAAGUUCCUGGCU 3

Silent GUA Val GUG Nonsense protein is shorter GCC GCA GCG O Nonsense protein is longer Ala GAC Asp GAA Glu GAG AUG Met or Start UAG UAA and UGA Stop GGC GGA GGG The gene KRTHAP1 codes for the production of hair keratin in humans and other primates It is this gene that is thought to be responsible for humans having relatively little body hair compared other primates Gly A portion of the template strand of the chimp gene 3 ACGACCGCT 5 A portion of the template strand of the human gene 3 ACGACTGCT 5 What type of mutation occurred in humans to result in our relative hairlessness C Dept Biol Penn State 2002

Rifamycin is an antibiotic used to treat the bacterium that causes tuberculosis It works by binding to the bacterium s RNA polymerase subunit This kills the bacterium by inhibiting transcription translation DNA replication cell division 13

G AUG 5 AGAATTTTTTTGAGTAGG 3 5 CCHACUCAL GUU GUC GUA GUG 5 GGATGAGTTTTTTTATCA 3 ACG GCU GCC Val GCA GCG AUG Met or Start UAG UAA and UGA Stop Ala AAG GAU GAC GAA GAG ICC 31 Lys Asp Here is the amino acids sequence for a short piece of a protein Glu AGG GGU GGC GGA GGG Arg Gly Pro Thr Gln Lys Asn Ser Which of the following is the DNA TEMPLATE strand used to produce the mRNA that encodes this protein sequence GUCAK nd Dept Biol Penn State 2002

Which characteristic of the genetic code lowers the likelihood of a mutation causing a m phenotype Universality Un ambiguity Non overlapping N

transcription Tetracycline is an antibiotic that kills bacteria by blocking the A binding site on the bacterial ribosome This kills the bacterium by inhibiting translation DNA replication RIBOSOME cell division Amino acid binding sites

Which of the following DNA strands is the template strand for this molecule of mRNA

During the process of transcription DNA polymerase adds nucleotides to the newly synthesized strand one DNA strand serves as a template a supply of the nucleotides ACGT is required two new RNA molecules are produced

These examples demonstrate the ability of genes from one species to be expressed in a different species This is possible because of which property of the genetic code Redundancy O Universality Unambiguousness a Tobacco plant expressing b Pig expressing a jellyfish a firefly gene gene 2011 Pro Edon he All of the above