Biology and Genetics

You have 20 ml of a liquid with 5.4 x 10^ 9 organisms/ml. You need exactly 3 x 1

You have 20 ml of a liquid with 5.4 x 10^ 9 organisms/ml. You need exactly 3 x 10^2 organisms/ml in at least 25 ml but you have only the following dilutions and pipets. You must u…

You have 200 proof (100%) ethanol, but you need 50 mL of 70% ethanol. What would

You have 200 proof (100%) ethanol, but you need 50 mL of 70% ethanol. What would you do?

You have 3 membrane samples: (A): A membrane in which all fatty acids have 20 ca

You have 3 membrane samples: (A): A membrane in which all fatty acids have 20 carbons and are saturated; (B) A membrane in which all fatty acids have 22 carbons and are saturated …

You have 3 turtles, each with a mutation that causes them to have a polka dotted

You have 3 turtles, each with a mutation that causes them to have a polka dotted pattern on their shells. You don't know if the mutations are in the same gene or in different gene…

You have 40 grams of Gold-189 which has a half-life of 30 minutes. How much Gold

You have 40 grams of Gold-189 which has a half-life of 30 minutes. How much Gold is there after two hours? a. 80 grams b. 20 grams c. 10 grams d. 2.5 grams e 160 grams 2. You leav…

You have 85 minutes to plan and write a composition of at least 700 words. Your

You have 85 minutes to plan and write a composition of at least 700 words. Your composition should be well organized and carefully revised to eliminate sentence errors. "Trump's A…

You have a 10-gram sample of Carbon-14. Use the radio isotope decay graph to ans

You have a 10-gram sample of Carbon-14. Use the radio isotope decay graph to answer the following questions. Part 1 How much Carbon-14 is left (in grams) after 3 half lives? Part …

You have a 42-year-old female that presents to your office with respiratory and

You have a 42-year-old female that presents to your office with respiratory and visual symptoms. She enjoys astronomy, but recently a visual change has made this difficult. She ha…

You have a 6.0-in diameter plastic cup of water filled to the brim, and an ident

You have a 6.0-in diameter plastic cup of water filled to the brim, and an identical plastic cup of water containing one ice cube of volume 1.1 in^3. The water level in the glass …

You have a 9-residue peptide hormone. The peptide initially does not react with

You have a 9-residue peptide hormone. The peptide initially does not react with Ellman's Reagent. However, after the peptide is treated with DTT (and the DTT is removed), addition…

You have a Drosophila line that is homozygous for autosomal recessive alleles a

You have a Drosophila line that is homozygous for autosomal recessive alleles a and b. You cross females of this line with males homozygous for the corresponding wild-type alleles…

You have a bacterial broth culture that contains a concentration of 2 x 10^7 cel

You have a bacterial broth culture that contains a concentration of 2 x 10^7 cells/mL. From this stock culture you take 10 mu L and add it to 990 mu L of sterile broth. You label …

You have a bacterial culture solution. When you directly measured the OD600, of

You have a bacterial culture solution. When you directly measured the OD600, of the culture solution, it was 3. Then, you performed a 10-fold dilution and measured the OD600 of th…

You have a beach ball which has a radius of 22 cm and a mass of 0.2 kg. You have

You have a beach ball which has a radius of 22 cm and a mass of 0.2 kg. You have a lead ball which has the same radius but has a mass of 120 kg. Part A -You immerse the beach ball…

You have a box containing N hydrogen gas molecules (H) with a temperature in the

You have a box containing N hydrogen gas molecules (H) with a temperature in the neighborhood of but not at room temperature, and another box containing 2N helium atoms (He) simil…

You have a busy family physician within your healthcare facility, and one day a

You have a busy family physician within your healthcare facility, and one day a nursing staff member hands you a phone message in the middles of your busy day. The spouse of one o…

You have a crude isolate of a new protein in yeast that you think might regulate

You have a crude isolate of a new protein in yeast that you think might regulate transcription. You first want to isolate and purify this protein from the mixture of other protein…

You have a culture of Staphylococcus epidermidis cells at a concentration of 2.5

You have a culture of Staphylococcus epidermidis cells at a concentration of 2.5x10^9/ml. You know that this organism is normally sensitive to streptomycin, yet you would like to …

You have a dilute sample of a protein of molecular mass 10 kDalton (104 Da) in w

You have a dilute sample of a protein of molecular mass 10 kDalton (104 Da) in water and want to make it more concentrated while retaining a large fraction of the protein. The 1ml…

You have a double-stranded DNA the sequence of which is “ATGGTTCTAGGTAAACCTCAA.”

You have a double-stranded DNA the sequence of which is “ATGGTTCTAGGTAAACCTCAA.” Now, you are doing DNA polymerase reaction using: (i) DNA polymerase (ii) dATP, dGTP, dCTP and dTT…

You have a drosophila line that is homozygous for autosomal recessive alleles a,

You have a drosophila line that is homozygous for autosomal recessive alleles a,b, and c, linked in that order. You cross females of this line with males homozygous for the corres…

You have a female Labrador retriever. This breed has three coat colors, black, c

You have a female Labrador retriever. This breed has three coat colors, black, chocolate, and yellow. Black labs are dark as night, chocolate labs are a deep brown, and yellow lab…

You have a flask from an overnight culture and take 1 mL from this flask and put

You have a flask from an overnight culture and take 1 mL from this flask and put it into 9 mL of PBS to dilute it (tube 1), you then take 1 mL from tube 1 and put that in a tube w…

You have a generated an RNAse A mutant in which 2 of the 8 cysteines have been m

You have a generated an RNAse A mutant in which 2 of the 8 cysteines have been mutated to alanine. Despite these mutations, the protein retains 100% activity. You now subject the …

You have a hen-feathered male and you want to determine whether it is heterozygo

You have a hen-feathered male and you want to determine whether it is heterozygous (HhZZ) or homozygous (HHZZ). Which of the following mating outcomes would allow you to conclude …

You have a jar of 1.5 mole/kg sucrose solution at room temperature (25 o C). You

You have a jar of 1.5 mole/kg sucrose solution at room temperature (25oC). You fill a bag with a 0.8 mole/kg sucrose solution. The bag is flexible and is made out of a semipermeab…

You have a limestone that contains calcite (CaCO_3) bivalve shells that have bee

You have a limestone that contains calcite (CaCO_3) bivalve shells that have been cemented together by calcite. You also have a quartz (Si02)-rich siltstone that contains intact f…

You have a limestone that contains calcite (CaCO_3) bivalve shells that have bee

You have a limestone that contains calcite (CaCO_3) bivalve shells that have been cemented together by calcite. You also have a quartz (SiO_2)-rich siltstone that contains intact …

You have a male Yellow Labrador Retriever with a brown nose that you are going t

You have a male Yellow Labrador Retriever with a brown nose that you are going to breed and your extraordinarily-picky partner desperately wants Chocolate Lab puppies. However, th…

You have a male Yellow Labrador Retriever with a brown nose that you are going t

You have a male Yellow Labrador Retriever with a brown nose that you are going to breed and your extraordinarily-picky partner desperately wants Chocolate Lab puppies. However, th…

You have a male Yellow Labrador Retriever with a brown nose that you are going t

You have a male Yellow Labrador Retriever with a brown nose that you are going to breed and your extraordinarily-picky partner desperately wants Chocolate Lab puppies. However, th…

You have a matrix protein with an isoelectric point of 9, and you develop a proc

You have a matrix protein with an isoelectric point of 9, and you develop a process for creating microspheres out of this material. If you loaded the compound with B-lactoglobulin…

You have a mixture of the following proteins: Protein A, 25 kDa, pl 7.5 Protein

You have a mixture of the following proteins: Protein A, 25 kDa, pl 7.5 Protein B, 100 kDa, pl 5.2 Protein C, 25 kDa, pl 9.5 Protein D, 45 kDa, pl 5.2 Protein E, fused with an MBP…

You have a mouse strain that is predisposed to developing skin cancer. Based on

You have a mouse strain that is predisposed to developing skin cancer. Based on the literature in the cancer field, you come up with a list of 10 potential candidate genes that mi…

You have a multi-year funded research program designed to measure efficacy of ma

You have a multi-year funded research program designed to measure efficacy of many (hundreds) new anti-microbials that have been developed to treat tuberculosis You will conduct b…

You have a new position at the Center for Disease Control. You have been assigne

You have a new position at the Center for Disease Control. You have been assigned to characterize a new epidemic that has spread rapidly among workers at a chicken farm in Califor…

You have a pair of breeding guinea pigs. You keep track of their litters until y

You have a pair of breeding guinea pigs. You keep track of their litters until you have data on 350 baby guinea pigs. 70 of the babies had pointy ears and brown eyes. 190 of the b…

You have a patient that exhibits the beginning symptoms of neurological loss of

You have a patient that exhibits the beginning symptoms of neurological loss of function and decide to sequence the patient’s genome to characterize any genetic markers for diseas…

You have a patient that exhibits the beginning symptoms of neurological loss of

You have a patient that exhibits the beginning symptoms of neurological loss of function and decide to sequence the patient’s genome to characterize any genetic markers for diseas…

You have a patient that exhibits the beginning symptoms of neurological loss of

You have a patient that exhibits the beginning symptoms of neurological loss of function and decide to sequence the patient’s genome to characterize any genetic markers for diseas…

You have a patient that exhibits the beginning symptoms of neurological loss of

You have a patient that exhibits the beginning symptoms of neurological loss of function and decide to sequence the patient's genome to characterize any genetic markers for diseas…

You have a patient with prostate cancer. The cancer causes blood vessels to weak

You have a patient with prostate cancer. The cancer causes blood vessels to weaken and burst. The patient has a dangerously low Ht and needs a blood transfusion. When you test his…

You have a pea plant with inflated pods (I) and another pea plant with constrict

You have a pea plant with inflated pods (I) and another pea plant with constricted pods (i). You wish to use the plants in a Mendelian experiment. You are sure that both plants ar…

You have a piece of circular DNA that can be cut by the restriction nucleases Ec

You have a piece of circular DNA that can be cut by the restriction nucleases EcoRI, HindIII, and NotI, as indicated in the Figure Below... Answer whether the following statement …

You have a pond that is 10 feet deep with 2 feet of mud at the bottom. Sunlight

You have a pond that is 10 feet deep with 2 feet of mud at the bottom. Sunlight penetrates about 3 feet into the pond. Oxygen levels are highest in the top 5 feet of the pond and …

You have a population of cockroaches in your kitchen that amounts to 500 adult i

You have a population of cockroaches in your kitchen that amounts to 500 adult individuals. You are tired of living with these scavengers, so you decide to go to the hardware stor…

You have a population of cockroaches in your kitchen that amounts to 500 adult i

You have a population of cockroaches in your kitchen that amounts to 500 adult individuals. You are tired of living with these scavengers, so you decide to go to the hardware stor…

You have a population of cockroaches in your kitchen that amounts to 500 adult i

You have a population of cockroaches in your kitchen that amounts to 500 adult individuals. You are tired of living with these scavengers, so you decide to go to the hardware stor…

You have a population of cockroaches in your kitchen that amounts to 500 adult i

You have a population of cockroaches in your kitchen that amounts to 500 adult individuals. You are tired of living with these scavengers, so you decide to go to the hardware stor…

You have a population of spiders that have two generations per year, one in the

You have a population of spiders that have two generations per year, one in the spring and one in the fall. There is a locus that controls the spiders response to temperature, wit…