Biology Questions

3 3 Which of the following describes a mutation in a parent that could change the phenotype of its future offspring O a mutation in the DNA of a sperm cell O a mutation in the RNA of a brain cell O a mutation in the DNA of a liver cell O a mutation in the RNA of a skin cell

3 3 A substitution mutation occurs in a DNA sequence as represented below Based on this information what is the expected effect of the mutation TAC GCC AGG ATT The table below shows the mRNA codons for some amino acids mRNA Codon AUG UAA UCC UUC UCG Amino Acid methionine STOP serine phenylalanine TAC GCC AAG ATT serine The polypeptide will contain an additional amino acid O The polypeptide will contain a different amino acid The polypeptide will have the same amino acids O The polypeptide will have fewer amino acids

3 3 A mutation in which of the following types of cells could be passed on from parent to offspring gamete bone cell O blood cell neuron

3 3 Crossing over is one event that can cause an offspring to have a phenotype that is different from its parents Which of the following statements describes another event that can sometimes cause an offspring to have a phenotype that is different from its parents A genetic mutation occurs in one of the parent gametes and is passed to the offspring O Dominant alleles are passed from the parents and expressed in the offspring O Natural selection favors the offspring with specific genetic traits The offspring is produced by asexual reproduction

3 3 A mutation caused a phenotypic change in an organism s offspring The 1 point mutation most likely occurred in which type of cell from the parent neuron O gamete O blood cell Oskin cell

How can simply heating a closed bottle or jar in a microwave be The jar could explode blowing the microwave door off O Getting the hot bottle out could burn your fingers Nothing could happen because you closed the bottle O The heat will tighten the top and you won t be able to open the bottle QUESTION 6 Which of these common procedures of using ethidium bromide offer a significant exposure hazard Only in the use in CSCI Cesium chloride gradients Cutting agarose gel and the use in CSCI Cesium chloride gradients Handling gel buffer and preparation of stock solution O Preparation of stock solution and the use in CSCI Cesium chloride gradients

Through skin absorption Only by injection Inhalation Just by looking at it QUESTION 2 Why are fume hoods potentially hazardous O It is never dangerous O An air disturbance can cause the vapor to escape O It is hard to see through the glass

3 2 An enzyme moves along a strand of DNA and produces a new nucleic acid strand Part of the new strand is here GUACUCGGCAAUUUCGCA Which of the following cellular processes created the new strand Otranscription O replication O crossing over active transport 1 pc

3 2 For a new liver cell to form DNA replication is necessary because it ensures that the newly formed cell has which of the following O only the best parts of the original cell s DNA a rearranged copy of the original cell s DNA O an identical copy of the original cell s DNA O two copies of the original cell s DNA

3 2 The diagram below represents the expression of the genetic code in organisms Three parts of the diagram are labeled X Y and Z What do X Y and Z represent in the diagram MIMI www AGUA Phe Gly X Z MMI HMMM Arg Phe OX is replication Y is a gene and Z is mutation OX is crossing over Y is DNA and Z is mitosis OX is transcription Y is mRNA and Z is translation X is meiosis Y is a chromosome and Z is transport 1p

3 2 The diagram below represents a biological process involving DNA What 1 point process is represented O replication O mutation fertilization O translation

3 2 A scientist wants to prevent a culture of live cells from producing a particular protein Which of the following will the scientist most likely modify to prevent the production of the protein a phospholipid in the plasma membrane O the polysaccharides in the cytoplasm O an enzyme in the lysosomes the DNA in the nucleus 1 pc

What are properties of essentially all organic liquids Mark all that are correct O Flammable 0 Highly reactive Corrosive Combustible Toxic

3 1 Erwin Chargaff is considered one of the pioneering scientists in the field 1 point of molecular biology In one of his studies Chargaff observed that a sample of human DNA contained approximately 30 adenine and 20 guanine Based on DNA structure what are the expected percentages of the other nitrogenous bases in the sample O 40 thymine 10 cytosine O 30 thymine 20 cytosine O20 thymine 30 cytosine O 10 thymine 40 cytosine

3 1 Which of the following describes how DNA determines genetic inheritance A single nucleotide codes for a genetic trait O A pair of complementary nucleotides codes for a genetic trait A set of three nucleotides in a specific order codes for a genetic trait A long sequence of nucleotides in a specific order codes for a genetic trait

3 1 Lipids carbohydrates and DNA all exist in human cells as long molecular chains Which of the following describes how DNA differs from lipids and carbohydrates O Only DNA contains genetic information O Only DNA is needed to create new cells Only DNA is found in the cytoplasm O Only DNA has carbon atoms

3 1 During the process of replication a molecule of DNA unzips forming two single strands What makes up each individual strand of DNA nitrogenous bases attached to a sugar phosphate backbone Osugar groups attached to individual amino acids paired thymine and guanine bases O paired adenine and uracil bases

3 1 What is the genetic material in the chromosomes of an animal s cells O DNA ORNA O glucosamine transcriptase

1 po 3 1 The diagram below represents a small section of a DNA molecule Which section of DNA represents the complementary strand to the section of DNA above 3 TH FTS ATTCGGGATATT O ATT CGG GAT ATT OTTA TAG GGC TTA TAA GCC CTA TAA

1 3 1 In a sample of double stranded DNA 30 of the nitrogenous bases are thymine What percentage of the nitrogenous bases in the sample are adenine O 20 30 O 60 O 70

3 1 A simple diagram of a DNA molecule is shown below X O ribosom ribosome binding site O a nucleotide base pair an mRNA bond Oan amino acid

3 1 Which molecule typically has a double helix shape O cellulose O DNA O glucose tRNA

What are the two different visual strategies you can choose from Decorate your study quide

Why is this a bad example of the draw it out strategy

True or false Memory for pictures seen a week ago is similar to memory for 1 point words and sentences a few minutes ago O True False

Why is this a bad example of the visual strategy Mutualism is a biological interaction between two species wherein both the species benefit from each other O The definition is incorrect The picture is not unexpected or funny so you won t really remember it The image came from google

O Pictures with airplanes O Pictures that are striking unexpected O Pictures that are ordinary

What is this note taking format called Captionless Image O KWL

of these is an example of bad note

In KWL which parts do you fill out BEFORE you read

If you already know something about the topic is it better to use questioning 1 poin or KWL O Questioning KWI

at is this note taking format called Key words Notes Question Note taking and questioning

Which of these are examples of good note taking Copying something word for word

1 3 Which of the following best describes how enzymes affect chemical reactions O They take the place of one of the reactants O They dissolve the products of reactions They change the reactants into ions O They speed up the rate of reactions

1 3 Secretions from the pancreas contain compounds called lipases Lipases increase the rate of digestion of lipids Lipases are an example of which of the following O enzymes O hormones simple sugars O nucleic acids

1 3 Skin cells and liver cells contain different sets of enzymes Which of the 1 po following conclusions can be made based on this information O Skin cells and liver cells can contain different numbers of chromosomes Skin cells and liver cells have different cell membrane compositions Skin cells and liver cells can perform different chemical reactions Skin cells and liver cells have different numbers of mitochondria

1 3 Which of the following will most likely change when an enzyme is added 1 point to a reaction the temperature of the reaction the products of the reaction O the rate of the reaction the pH of the reaction

1 3 Cellular respiration involves a series of chemical reactions Which of the 1 points following is a primary way that enzymes affect these reactions O They change the location of the reactions in the cell They take the place of oxygen as a reactant They increases the rate of the reactions They decrease the pH of the products

1 3 Many enzymes are found in the cytoplasm of human body cells These enzymes would be expected to function optimally at which of the following temperatures and pH values O 0 C and pH 2 O 12 C and pH 5 O 37 C and pH 7 O 80 C and pH 10

1 3 Sucrase speeds up the breakdown of sucrose into glucose and fructose Sucrase is an example of which of the following types of molecules O disaccharide O enzyme O hormone O nucleic acid h

1 1 The body structure of a reef building coral consists of a hard skeleton covering soft tissue Which of the following elements is most common in the coral s soft tissue O carbon O chlorine sodium O zinc

1 1 Peptidoglycan is a compound in the cell walls of many bacteria Which 1 point of the following elements are most abundant in peptidoglycan O iodine and potassium chlorine and iron carbon and hydrogen aluminum and sodium

1 1 Carbohydrates lipids proteins and nucleic acids are organic molecules 1 poin essential for life Which of the following elements makes the large structures of these organic molecules possible O calcium O carbon O oxygen O zinc

1 1 Cellulose is a complex carbohydrate that makes up the cell walls of plants Which of the following elements are main components of cellulose Osodium and hydrogen O potassium and chlorine O carbon and hydrogen calcium and chlorine

1 1 What are elements 5 and 6 Percent by Mass 80 70 50 40 30 20 10 Common Elements in the Human Body 1 3 Element O carbon and oxygen Osodium and iron O zinc and sulfur O chlorine and phosphorus

1 1 Many farm animals eat hay which is made by cutting and drying plants 1 point such as ryegrass and timothy grass Scientists analyzed the composition of hay after it was cut and again after it was dried The amounts of which common biological elements would have decreased the most as the hay dried nitrogen and chlorine oxygen and hydrogen Ophosphorus and zinc sulfur and calcium

1 1 Maltose is a carbohydrate molecule that provides energy to plants early 1 poin in their life cycle Which elements are most common in a molecule of maltose magnesium and sulfur iron and phosphorus copper and nitrogen carbon and hydrogen d

6 4 Earth s atmosphere is 20 9 molecular oxygen 02 Which process 1 point provides most of the oxygen in the atmosphere osmosis cellular respiration photosynthesis transpiration 6 4 Which of the following processes removes carbon from the air and uses 1 point it to make organic compounds combustion

3 What is the primary role of photosynthesis in the carbon cy transferring carbon from producers to decomposers transferring carbon from the soil to organisms removing carbon from the atmosphere O releasing carbon to the oceans

6 4 Which of the following statements describes a role of plants in the water cycle O Plants transfer water to bacteria during nitrogen fixation O Plants release water from their roots into the soil O Plants convert water vapor into carbon dioxide during photosynthesis O Plants release water vapor into the atmosphere during transpiration