1. Understanding pH is essential in chemistry and biology. pH is…
Question Answered step-by-step 1. Understanding pH is essential in chemistry and biology. pH is… 1. Understanding pH is essential in chemistry and biology. pH is defined by the following equation,pH = ?log [H+] What is the approximate hydrogen ion concentration [H+] of blood with pH 7.4?Select one:a.4.0 x 10-8 M b.2.5 x 107 M c.8.7 x 10-1 M d.6.1 x 10-4 M 2. An outbreak of an extremely virulent strain of influenza occurs in a city, with an initial number of 20 infected people. The number of ill people increases by 25% per hour. Which function models this outbreak?Select one:a.y = 20(1 – 25)x b.y = 20(1 + 25)x c.y = 20(1 – 0.25)x d.y = 20(1 + 0.25)x 3. Select one:a.1.27 b.3.65 c.2.07 d.2.91 4. A certain type of bacteria, given a favourable growth medium, doubles in population every 8 hours. Given that there were approximately 1000 bacteria to start with, how many bacteria will there be in two and a half daysSelect one:a.1.71 x 104 b.1.81 x 105 c.7.5 x 105 d.2.91 x 105 5. Based on the figure below, approximately how many orders of magnitude bigger is the genome of Mycoplasma pneumoniae than the genome of HIV-1?Image transcription text2 HIV-1 Mycoplasma pneumonine 6Helicobacter pylori E. coli log (GenomeSize) 8 Fruit Fly Human 10… Show more… Show moreSelect one:a.15 b.2 c.1.5 d.20 6. The following equation represents the number of individuals (N) in a city who contract a highly contagious fatal disease over time(t), what would be the value of the horizontal asymptote?Select one:a.? b.10,000 c.0 d.2,000 7. Electrocardiograms (ECGs) are most often used by clinicians to identify potential arrhythmias. The QT interval on an ECG is the time interval representing ventricular depolarization and subsequent repolarization (i.e. the duration of activation and recovery of the heart). The RR interval on an ECG is the interval used to calculate the heart rate. The QT interval varies with heart rate (i.e. RR interval) and can be modelled using the following function:Image transcription textOT= 425 – 676 . e-0.0037-RR… Show moreWhere RR is the RR interval from an ECG (all units are in milliseconds)What is the QTinterval for an individual with an RR interval of 900 ms. 8. Using the Electrocardiogram (ECG) formula for the QT interval below:Image transcription textOT= 425 – 676 . e-0.0037-RR… Show moreDetermine the RR interval for a patient with a QT interval of 320ms. Input an answer to the nearest whole millisecond. 9. PCR is a method used to amplify DNA. All you need is your DNA, primers (small pieces of DNA) complementary to two sites in your DNA (one on each strand), a heat-stable polymerase (enzyme that can make DNA according to a certain template), nucleotides and a thermo-cycler. By adding all the ingredients and heating and cooling the mixture in certain pre-programmed cycles, you can amplify the DNA between the two primers. At 100% efficiency, the number of double stranded DNA pieces is doubled in each cycle. Starting with 1 copy of double stranded DNA, how many copies will you have after 15 cycles at 100% efficiency? Biology Science Biochemistry BIOMEDICAL MED1BSF Share QuestionEmailCopy link Comments (0)
