Biology and Genetics
101624 questions • Page 1707 / 2033
When Archie inserted his knife into the toaster to release a piece of toast that
When Archie inserted his knife into the toaster to release a piece of toast that was jammed in the toaster, he received a very painful electric shock. As a result of this aversive…
When Astbury steamed and stretched the wool and held it, the X-ray pattern showe
When Astbury steamed and stretched the wool and held it, the X-ray pattern showed a new repeating structural unit that was approximately 7.0 A long. When the stretched wool was al…
When Brent Crude oil was worth about $80 per barrel and with the 67% recovery, w
When Brent Crude oil was worth about $80 per barrel and with the 67% recovery, what is the potential value (to nearest $ Billion)? Congratulations - If you are now a registered pe…
When Brianna read a magazine article claiming that chocolate milk consumption tr
When Brianna read a magazine article claiming that chocolate milk consumption triggers hyperactivity in children, she believed the claim completely. She did not wonder whether it …
When DNA is compacted by histones into 10-nm and 30-nm fibers, the DNA is unable
When DNA is compacted by histones into 10-nm and 30-nm fibers, the DNA is unable to interact with proteins required for gene expression. Therefore, to allow for these proteins to …
When DNA strands are separated in a gel using electrophoresis, which of the foll
When DNA strands are separated in a gel using electrophoresis, which of the following will be TRUE? (Choose ALL correct answers) strands will move toward the positively charged el…
When E. coli that has been transformed by pGLO is grown on nutrient agar plates
When E. coli that has been transformed by pGLO is grown on nutrient agar plates (LB) containing ampicillin but not arabinose, the ?-lactamase and araC genes are expressed. a) Why …
When European explorers colonized Latin America, they interbred with the Native
When European explorers colonized Latin America, they interbred with the Native Americans. Eventually, the Europeans brought African slaves to the Americas, as well, and this new …
When G1 and S phase cells were fused together, the G1 nucleus beganto replicate
When G1 and S phase cells were fused together, the G1 nucleus beganto replicate DNA when it was exposed to S phase cytoplasm in thefused cell. What conclusion was drawn from this …
When Gregor Mendel conducted his genetic experiments with pea plants, he observe
When Gregor Mendel conducted his genetic experiments with pea plants, he observed that a trait’s inheritance pattern was the same regardless of whether the trait was inherited fro…
When Gregor Mendel was breeding pea plants, he observed that plants with colored
When Gregor Mendel was breeding pea plants, he observed that plants with colored seed coats always had colored flowers and colored leaf axils. (Axils are the parts of the plant th…
When Gregor Mendel was developing his ideas of inheritance of characteristics, m
When Gregor Mendel was developing his ideas of inheritance of characteristics, molecular genetics was not yet discovered. Explain in your own terms, why his two most important ant…
When HBC is added to a buffer solition on enoyl coA hydratase in D218O it was fo
When HBC is added to a buffer solition on enoyl coA hydratase in D218O it was found that the enzyme catalyzes the exchange of deuterium between the solvent and the hydroxyl oxygen…
When Henrietta Lacks was diagnosed with cancer in 1951, doctors took her cells a
When Henrietta Lacks was diagnosed with cancer in 1951, doctors took her cells and grew them in test tubes. Those cells led to breakthroughs in everything from Parkinson's to poli…
When Hubble did his early work on the expanding universe, he knew nothing about
When Hubble did his early work on the expanding universe, he knew nothing about the cosmological redshift. He used the Doppler shift equations instead, but these gave him the corr…
When Hurricane Opal (1995) reached its peak intensity, it had sustained winds of
When Hurricane Opal (1995) reached its peak intensity, it had sustained winds of 150 mph. What category on the Saffir-Simpson scale would it have been at its peak? Select one: a. …
When I am doing the Drosophila laboratory, IF I got the result of F1 below that:
When I am doing the Drosophila laboratory, IF I got the result of F1 below that: Wild males: 22 White eyed male :20 Wild female : 14 White eyed male:13 1 ) What ismy hypothesis to…
When I checked the gel for pcr ynder uv light , there are some samples have band
When I checked the gel for pcr ynder uv light , there are some samples have bands while others are not . What does that mean . If there is a band is that mean the primers bind to …
When I studied biology at my medical school we used to learn things about a cent
When I studied biology at my medical school we used to learn things about a century old: the famous Darwin's voyage on "Beagle" to the Galapagos Islands, the classical triad of hi…
When Joe raised the can, his biceps brachii muscle performed a(an) _____contract
When Joe raised the can, his biceps brachii muscle performed a(an) _____contraction and when he lowered the can to the desk, the muscle performed a(an)_____contraction. A) tetanic…
When LDL is taken up by a cell, it will have which of the following impacts to i
When LDL is taken up by a cell, it will have which of the following impacts to intracellular cholesterol? Increase in intracellular cholesterol; Decrease on de novo cholesterol sy…
When Leach\'s storm pretrels fly back to their burrows on islands in the ocean a
When Leach's storm pretrels fly back to their burrows on islands in the ocean at night, they: a) drop to the forest floor downwind of their burrows and then walk upwind to the bur…
When MZ B cells were incubated with medium that neutrophils grew in (but which l
When MZ B cells were incubated with medium that neutrophils grew in (but which lacked cells), the amount of mRNA from the activation-induced cytidine deaminase (AID) gene was meas…
When Mary is late coming home from work, John decides thatit\'s because she has
When Mary is late coming home from work, John decides thatit's because she has lost interest in their relationship. Thissituation illustrates the ______ effect. (a)framing …
When Michael Behe gives lectures on intelligent The messages dictated to Rael ex
When Michael Behe gives lectures on intelligent The messages dictated to Rael explain how life design theory, he often opens the floor to questions. on Earth is not the result of …
When Mount St Helens erupted, the landscape was subjected to disturbances of a v
When Mount St Helens erupted, the landscape was subjected to disturbances of a variety of magnitudes and intensities. Ecologists that studied succession in areas of the “blast zon…
When Mount St Helens erupted, the landscape was subjected to disturbances of a v
When Mount St Helens erupted, the landscape was subjected to disturbances of a variety of magnitudes and intensities. Ecologists that studied succession in areas of the “blast zon…
When NADPH/NADP+ ratios are high in chloroplasts, photophosphorylation via the c
When NADPH/NADP+ ratios are high in chloroplasts, photophosphorylation via the cyclic e- pathway predominates. Select the statement below that best describes the consequences of t…
When Na+ -channel is opened in a receptor, it will lead to a. depolarization b.
When Na+ -channel is opened in a receptor, it will lead to a. depolarization b. hyperpolarization c. repolarization d. polarization e. neurotransmitter release When Cl– -channel i…
When PEL cells are treated with 5-aza-2-dc, how does it affect PDLIM2 expression
When PEL cells are treated with 5-aza-2-dc, how does it affect PDLIM2 expression? Pick a panel in figure 4 that helps to support your reasoning. In your explanation describe with …
When Prayer is Not Enough \"You\'ll feel better soon,\" Marylyn Tauber told her
When Prayer is Not Enough "You'll feel better soon," Marylyn Tauber told her 8-year-old son Madison. "God doesn't let bad things happen to people who believe in Him with all their…
When RNA polymerases were first studied in eukaryotes, three peaks of polymerizi
When RNA polymerases were first studied in eukaryotes, three peaks of polymerizing activity (1, 2 and 3 on the graph below) were obtained by fractionating cell extracts on chromat…
When Robert says to Nathan that he is having a difficult time with his girlfrien
When Robert says to Nathan that he is having a difficult time with his girlfriend, Nathan's first response is launch into an extended description of the problems he is having with…
When Ruth applied for health insurance, she li tory. had been examined send sted
When Ruth applied for health insurance, she li tory. had been examined send sted a colonoscopy examination as part of her medical) she only the colonoscopy records to her insuranc…
When Sanger sequencing is used, genomic fragments must be cloned into vectors us
When Sanger sequencing is used, genomic fragments must be cloned into vectors using a process known as whole-genome shotgun sequencing. Review the steps of whole-genome sequencing…
When Shaun showed up for practice later that day his coach immediately noticed t
When Shaun showed up for practice later that day his coach immediately noticed the honey colored crusted lesion on Shaun’s skin and instructed him to have his parents take him to …
When Sheila and Tyrone\'s daughter Mallory was born, on June 12. Anika was pregn
When Sheila and Tyrone's daughter Mallory was born, on June 12. Anika was pregnant. after she missed her period. Anika and her husband. Jeremy, were thrilled at the news, Anika's …
When Shep the farm dog discovered a population of wild black-footed ferrets near
When Shep the farm dog discovered a population of wild black-footed ferrets near Meeteetse WY, the responsibility for monitoring and protection of the population fell to the Wyomi…
When Thomas Hunt Morgan crossed his red-eyed F1 generation flies (heterozygous f
When Thomas Hunt Morgan crossed his red-eyed F1 generation flies (heterozygous for body color and wings) to each other, the F2 generation included both red- and white-eyed flies. …
When a B cell encounters an antigen that is a match with its receptor, it divide
When a B cell encounters an antigen that is a match with its receptor, it divides rapidly and produces which two cell types? antibodies and memory T cells plasma B cells and memor…
When a CD8+ cell encounters an MHC presented antigen epitope the CD8+ T-cell cel
When a CD8+ cell encounters an MHC presented antigen epitope the CD8+ T-cell cell s activated to become a cytotoxic True False Mammalian red blood cells express MHC molecules on t…
When a Eurokaryotic cell is placed in an aqueous (water) solution containing K+
When a Eurokaryotic cell is placed in an aqueous (water) solution containing K+ and Na+ ions, one would expect that A) nothing would happen B) the cell would swim away C) H20 woul…
When a Shenandoah Valley farm is abandoned, its formerly plowed fields first bec
When a Shenandoah Valley farm is abandoned, its formerly plowed fields first become weedy meadows, then shrubby areas, and finally forest. This sequence of plant communities is an…
When a baby girl is born, her oocytes have begun meiosis but are paused at the e
When a baby girl is born, her oocytes have begun meiosis but are paused at the end of Prophase I. At puberty hormones trigger meiosis to proceed for a few oocytes in each month. A…
When a bacteria A divides it produces two cells A\', A\'\'. Each of them receive
When a bacteria A divides it produces two cells A', A''. Each of them receives a copy of the chromosome/plasmids. Now, DNA replication occurs way before division in a semiconserva…
When a bee has discovered a good batch of flowers, she flies back to the hive an
When a bee has discovered a good batch of flowers, she flies back to the hive and communicates the location to the rest of the bees, wnat best explains wihy the bee exthibits this…
When a biologist is talking about a genetically engineered mouse strain which is
When a biologist is talking about a genetically engineered mouse strain which is a "tool strain", what does that mean? What is the exact definition of a tool strain? What is the d…
When a biotite granite weathers in a temperate climate, what weathering products
When a biotite granite weathers in a temperate climate, what weathering products will form the soil? Match the mineral component to its weathering product. Each answer is used at …
When a cardiac muscle cell contracts, neighboring cells attached to it soon also
When a cardiac muscle cell contracts, neighboring cells attached to it soon also contract, followed shortly by yet more cardiac cells contracting. What is the basis for such seque…
When a cell uses chemical energy to perform work, it uses the energy released fr
When a cell uses chemical energy to perform work, it uses the energy released from a/an _____ reaction to drive a/an _____ reaction. A) exergonic; endergonic B) exergonic; spontan…
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