Peq Study guides, Class notes & Summaries

A beaker contains two solutions of salt dissolved in water. The two solutions have different concentrations of salt (measured by molarity, M) and are separated by a membrane that is permeable to both salt and water. The salt and water will move through the membrane by diffusion. Which statement is true about the diffusion of these solutions? There will be a net movement of water from side A to side B and no movement of salt. There will be a net movement of both salt and water from side B to...

A pea plant is heterozygous (Aa) for seed color and heterozygous (Bb) for seed shape. According to Mendel's principle of independent assortment: (Select all that apply.) A) each gamete will contain either a seed-color allele or a seed-shape allele, but not both. B) a gamete that contains dominant allele for seed color must also contain the dominant allele for seed shape. C) a gamete that contains dominant allele for seed color must also contain the recessive allele for seed shape. D) a g...

A population of rodents, called population A, lived on a large landmass. One group of the population dispersed to a nearby island. Two million years later, the island population split into two smaller, equalsized populations when a river formed across the middle of the island. Now two new species, A1 and A2, have evolved on the island. They have replaced the population from which they were derived. Use the image to answer the question.Which diagram represents the phylogeny of the populations ...

Imagine these genotype frequencies in a population: p2 = 0.49, 2pq = 0.42, q2 = 0.09. Now assume that there is nonrandom mating where individuals with one genotype will only mate with individuals that also have their genotype. Assume this pattern of mating goes on until the frequency of heterozygotes is effectively zero. In addition, there is also inbreeding depression such that individuals with the genotype represented by p2 die before they can reproduce. What will be the eventual frequenc...

Three carbon atoms are linked by single covalent bond such that those carbon atoms and bonds together form the shape of a V. All of the unshared electrons form covalent bonds with hydrogen. How many hydrogen atoms does this molecule contain? 10 4 6 8 2 - 8 (Each valence electron not involved in a C-C bond can form a bond with hydrogen.)

Bacteroides are reduced in patients with recurrent CDI. False True - true Each point on the graph above represents one microbial species present in the either the small intestine or the large intestine. False True - false increased mitotic division in memory B cells? - where it shifts from primary to secondary response Innate immunity activation depends on: previous exposure to a foreign antigen. memory B cells. diversity of antibodies in the blood stream. MHC class II proteins. Non...

Activated carbon used - Calgon CPL Adsorbents and examples - mass separating agents ex: molecular sieve zeolites, activated alumina, silica gel, activated carbon Adsorption breakthrough curve - Instantaneous step change in outlet concentration from pure He to feed conc of CO2 Appears as S shaped curve due to mass and heat transfer effects and other non-ideal behaviors Characteristic velocity - velocity each concentration moves at according to equilibrium theory Concentration and velocity ...

A eukaryotic gene is most likely to be transcribed if it is located where? In a region of the genome in which the histones are methylated In a heterochromatic region of teh genome In a region of the genome in which the histones are acetylated In a region of the genome in which the histones are unmodified - Answer-In a region of the genome in which the histones are acetylated A mutant strain of E. coli is found that produces both β-galactosidase and permease constitutively. What are the M...

/brainhoney/Resource/9529883,8,0,44,30,2/Assets/JT/LS%207C/S The three DNA fragments above are about to be sequenced. What is the nucleotide sequence that will be recorded from this synthesis reaction for the bottom (3rd) DNA fragment? a) 5'-CCGGGATCAGGACGCCATT-3' b) 5'-CCGGGCAATAGTCACCATT-3' c) 5'-AATGGCGTCCTGATCCCGG-3' d) 5'-AATGGTGACTATTGCCCGG-3' - Answer-c /brainhoney/Resource/9529883,8,0,44,30,2/Assets/JT/LS%207C/Sequencing%20raw% How many different sequences are represented...