Biology and Genetics

1. While you are roller-blading around Lake Artemesia in Greenbelt, you notice a

1. While you are roller-blading around Lake Artemesia in Greenbelt, you notice a fascinating bark beetle on the trees. Glad for an excuse to catch your breath, you stop and observ…

1. Who Lamarck? What did he have to say about the evolution of life? was 2. Can

1. Who Lamarck? What did he have to say about the evolution of life? was 2. Can you explain the basics of Lamarckian evolution? 3. What is natural selection? Do you understand the…

1. Who coined the term ‘DNA Science’? (Choose the one correct answer) Rosalind F

1. Who coined the term ‘DNA Science’? (Choose the one correct answer) Rosalind Franklin James Watson Francis Crick Maurice Wilkins Linus Pauling 2. Gregor Mendel deduced that game…

1. Who discovered the magnetic strips on the seafloor and how did they discover

1. Who discovered the magnetic strips on the seafloor and how did they discover them? B. How did these help to prove the theory of plate tectonics and how can they be used to dete…

1. Who is credited for the discovery of the structure of DNA? A) Watson and Cric

1. Who is credited for the discovery of the structure of DNA? A) Watson and Crick B) Trey and Page C) Mendel and Franklin. D) None of the above. 2. Who did much of the work leadin…

1. Who is responsible for solving the problem being faced by Flint, Mi residents

1. Who is responsible for solving the problem being faced by Flint, Mi residents? 2. Talk about crisis in Flint, MI from a social justice lens. 3.What are the broader public healt…

1. Who were the first scientists to describe DNA as a double helix structure? A.

1. Who were the first scientists to describe DNA as a double helix structure? A. Rutherford and Crick B.Mandeleev and Watson C.Watson and Crick D.Watson and Rutherford 2.Which of …

1. Who wrote this statement? \" The essential point is that methodologically sou

1. Who wrote this statement? " The essential point is that methodologically sound studies published in reputable scientific journals have been conducted to directly test the conse…

1. Whot is the total magnificotion if the oculor (eyepiece) is 10X and the objec

1. Whot is the total magnificotion if the oculor (eyepiece) is 10X and the objective is 80xi 2. Whot is the totol magnification if the ocular (eyepiece) is 5X and the objective is…

1. Why are abnormalities in the number of sex chromosomes in mammals usually les

1. Why are abnormalities in the number of sex chromosomes in mammals usually less severe in their phenotypic effects than abnormalities in the number of autosomes? 2. Certain tree…

1. Why are action potentials usually conducted in one direction? A) The slowing

1. Why are action potentials usually conducted in one direction? A) The slowing of the sodium potassium pump B) Brief refractory periods that prevent reopening of voltage gated Na…

1. Why are age and growth of fishes important to estimate? 2. How are fishes age

1. Why are age and growth of fishes important to estimate? 2. How are fishes aged? What’s the most common method and what fish parts are used? What are the advantages and disadvan…

1. Why are aminoglycosides more selectively toxic to bacteria than human cells?

1. Why are aminoglycosides more selectively toxic to bacteria than human cells? (Be sure to be complete and specific in your answer to make it clear why these drugs are more toxic…

1. Why are carbon dioxide concentrations measured at Mauna Loa, Hawaii, higher i

1. Why are carbon dioxide concentrations measured at Mauna Loa, Hawaii, higher in Northern Hemisphere winter than in Northern Hemisphere summer? There are more plants in the South…

1. Why are plants green? Explain 2. What are the end products of photosynthesis

1. Why are plants green? Explain 2. What are the end products of photosynthesis 3. What organisms are capable of photosynthesis? 4. What are the major photosynthetic pigments in p…

1. Why are sensory receptors good translators (i.e., what do they do)? a What ar

1. Why are sensory receptors good translators (i.e., what do they do)? a What are the four types of sensory receptors and give an example for each? b. How does lateral inhibition …

1. Why are signaling pathways associated with shifts to multicellularity? A) It

1. Why are signaling pathways associated with shifts to multicellularity? A) It is a byproduct of cells being constantly in close proximity B) Cells are permeable, which leads to …

1. Why are the Earth\'s poles colder than the equator? A) because the Earth\'s p

1. Why are the Earth's poles colder than the equator? A) because the Earth's poles are farther from the Sun than the Earth's equator B) because the sun strikes the Earth at a lowe…

1. Why are the cartilage rings in the trachea C-shaped? allows the esophagus to

1. Why are the cartilage rings in the trachea C-shaped? allows the esophagus to bulge into the trachea so food can be swallowed prevents the esophagus from bulging into the trache…

1. Why are the progeny of a testcross generally used to map loci? Why not the F2

1. Why are the progeny of a testcross generally used to map loci? Why not the F2 progeny from an F1 x F1 cross? Select one: a. In a testcross more of the progeny would be expected…

1. Why aren’t the carotenes and xanthophylls evident in most leaves until fall?

1. Why aren’t the carotenes and xanthophylls evident in most leaves until fall? 2. White asparagus is usually more difficult to grow than green asparagus. Why? 3. The needles on E…

1. Why can’t influenza virus replicate in a cell where the nucleus has been remo

1. Why can’t influenza virus replicate in a cell where the nucleus has been removed? • 2. You lab is researching the Spring fever virus(SpFV) and the debilitating variant SpFV-4 t…

1. Why did the amount of radioactivity in each set of samples change over time?

1. Why did the amount of radioactivity in each set of samples change over time? 2. After 4 minutes in the blender, what percentage of 35S was outside the bacteria? What percentage…

1. Why do Coxiella show variable Gram stain results-that is, why would they stai

1. Why do Coxiella show variable Gram stain results-that is, why would they stain gram-positive or gram-negative at different times? Tell which stage is G + and which stage is G-,…

1. Why do atmospheric carbon dioxide concentrations increase when humans turn ra

1. Why do atmospheric carbon dioxide concentrations increase when humans turn rainforests into agricultural lands? Rainforests fix more carbon in the soil than agricultural lands.…

1. Why do emotions such as anger or fear slow digestion? Because they stimulate

1. Why do emotions such as anger or fear slow digestion? Because they stimulate the parasympathetic nerves supplying the GI tract Because they stimulate the sympathetic nerves tha…

1. Why do hurricanes travel east to west in the tropics? Why do hurricanes event

1. Why do hurricanes travel east to west in the tropics? Why do hurricanes eventually steer off to the north and northeast towards the end of their life cycle? 2. What environment…

1. Why do some stickleback populations lack pelvic spines?from the following vid

1. Why do some stickleback populations lack pelvic spines?from the following video http://mediaplayer.pearsoncmg.com/assets/gHqRu3vsDgipqyDIwQQlJ9DH5u5nGaef Select all that apply.…

1. Why do yeasts perform alcohol fermentation? 2. What is the chemical reaction

1. Why do yeasts perform alcohol fermentation? 2. What is the chemical reaction for fermentation? 3. Which are the reactants in this reaction? Which are the products? 4. What is t…

1. Why do you suppose the eastern and Western North American dinosaurs are diffe

1. Why do you suppose the eastern and Western North American dinosaurs are different as to species and diversity? 2. What are the main groups of Alabama dinosaurs and what is thei…

1. Why do you think that cells duplicate their chromosomes before dividing inste

1. Why do you think that cells duplicate their chromosomes before dividing instead of after? They'd end up with the same amount either way. A. It's just a random result of evoluti…

1. Why do you think that making data available to the public is important. List

1. Why do you think that making data available to the public is important. List 3 pros and cons from either the EPA or public perspective. Explain your answers. 2. The Clean Air A…

1. Why do you think that making data available to the public is important. List

1. Why do you think that making data available to the public is important. List 3 pros and cons from either the EPA or public perspective. Explain your answers. 2. The Clean Air A…

1. Why does Central Asia figure so prominently in many discussions of climate ch

1. Why does Central Asia figure so prominently in many discussions of climate change? 2. What role do international treaty organizations play in the geopolitical situation of Cent…

1. Why does HbS run slower than the other isoforms? Must provide good rationale.

1. Why does HbS run slower than the other isoforms? Must provide good rationale. 2. Currently there is fully adopted therapeutic for the treatment of SCA however in the past sever…

1. Why does Synechocystis not require electroporation or chemical pretreatment p

1. Why does Synechocystis not require electroporation or chemical pretreatment prior to transformation? 2. What specific genetic manipulation does Synechocystis readily allow that…

1. Why does a patient who had a URI that developed into mengitis have hypertensi

1. Why does a patient who had a URI that developed into mengitis have hypertension , high RR and high pulse rate? 2. Explain the pathophysiology behind this patient's lymphadenopa…

1. Why does a patient who had a URI that developed into mengitis have hypertensi

1. Why does a patient who had a URI that developed into mengitis have hypertension , high RR and high pulse rate? 2. Explain the pathophysiology behind this patient's lymphadenopa…

1. Why does earth’s emissions spectrum measured at the top of the atmosphere not

1. Why does earth’s emissions spectrum measured at the top of the atmosphere not exactly follow the blackbody spectrum for 288 K? Question options: Because the atmospheric greenho…

1. Why does predicted vital capacity vary with height? (2pts) 2. Explain how fac

1. Why does predicted vital capacity vary with height? (2pts) 2. Explain how factors other than height might affect lung capacity? (2pts) 3. How would the volume measurements chan…

1. Why does urea not contribute to tonicity? 2. Problem 1: solution adds 1 liter

1. Why does urea not contribute to tonicity? 2. Problem 1: solution adds 1 liter of volume and 300 mOsmoles of Nal Work total body first. Add solute and volume, then calculate the…

1. Why doesn\'t native gel electrophoresis usually separate proteins effectively

1. Why doesn't native gel electrophoresis usually separate proteins effectively by molecular weight? What else contributes to the separation? How does the use of sodium dodecyl su…

1. Why enhancing of farm credit supply is important in PICs? What are different

1. Why enhancing of farm credit supply is important in PICs? What are different sources of finance for agricultural activities? (2 marks) 2. Explain with the help of some suitable…

1. Why have large portions of the Amazon rainforest become depleted in recent ye

1. Why have large portions of the Amazon rainforest become depleted in recent years? What might be done to reduce the rate of deforestation? 2. What has happened to the percentage…

1. Why is MgCl2 included in the PCR buffer? MgCl2 is used in the PCR buffer beca

1. Why is MgCl2 included in the PCR buffer? MgCl2 is used in the PCR buffer because it help 2. If you started a PCR protocol with 10 double stranded molecular of DNA, how many dou…

1. Why is aseptic technique important when culturing microbes? 2. Define the ter

1. Why is aseptic technique important when culturing microbes? 2. Define the term inoculation with respect to microbiology . Why must an inoculating loop be flamed before placing …

1. Why is cellulose so rigid? a) tight packing b) extensive hydrogen bonding c)

1. Why is cellulose so rigid? a) tight packing b) extensive hydrogen bonding c) lack of water interaction d) all of the above 2. Monosaccharides and polysaccharides can covalently…

1. Why is central obesity of such concen tn regard to the health ofan individual

1. Why is central obesity of such concen tn regard to the health ofan individual? 2. Describe three major ways that the body uses energy and discuss how an individual may influenc…

1. Why is cleavage furrow a contractile ring of actin microfilamrnts that eventu

1. Why is cleavage furrow a contractile ring of actin microfilamrnts that eventually results in the division of the cytoplasm ? 2. Why lysosome digests other worn out organelles a…

1. Why is it best if the Gram stain can be performed using cultures less than 24

1. Why is it best if the Gram stain can be performed using cultures less than 24 hours old? What results would you expect to see if you were using a mixed smear of Escherichia col…