Biology and Genetics

4. What components of the nucleotide monomers make the backbone of polynucleotid

4. What components of the nucleotide monomers make the backbone of polynucleotides, and what component determines the different DNA sequences? What bonds help DNA double-helix for…

4. What does it mean for a lymphocyte to be activated? select all that apply A l

4. What does it mean for a lymphocyte to be activated? select all that apply A lymphocyte becomes activated when it encounters the antigen for which it is specific. An activated l…

4. What is a teratogen? What three things influence the severity of the damage d

4. What is a teratogen? What three things influence the severity of the damage done by a teratogen and the type of defect? What are some examples of teratogens? Why is taking foli…

4. What is an ideal free distribution and under what conditions can it be establ

4. What is an ideal free distribution and under what conditions can it be established? 5. Southern European songbird, the blue tit, breeds in two habitats that differ greatly in q…

4. What is the difference between a hypothesis and a theory? (0.5 pt) a. A hypot

4. What is the difference between a hypothesis and a theory? (0.5 pt) a. A hypothesis is an educated guess to explain why something happens. A theory is proposed after the hypothe…

4. What is the difference between extensive and intensive proper es? (a) Both pr

4. What is the difference between extensive and intensive proper es? (a) Both properties exhibit mass, volume, and density as an independent variable. (b) Intensive property is th…

4. What is the difference between the porphyroblastic texture that is common to

4. What is the difference between the porphyroblastic texture that is common to many metamorphic rocks involved in general crustal thickening and the porphyroclastic texture that …

4. What is the function of 3\' to 5\' exonuclease activity in DNA polymerases? W

4. What is the function of 3' to 5' exonuclease activity in DNA polymerases? What would boe activity in D the consequence of mutating this activity of DNA polymerase III on the fi…

4. What is the function of cuvette with TE solution 5. Draw and label the struct

4. What is the function of cuvette with TE solution 5. Draw and label the structure of a nucleosome 6. What did you learn about the properties of DNA when you have isolated DNA fr…

4. What is the implication of high nitrate loads in these water systems? In othe

4. What is the implication of high nitrate loads in these water systems? In other words, what are the negative aspects of excessive amounts of nitrate in the biotic communities of…

4. What key words should a researcher use to conduct a search? 5. Describe each

4. What key words should a researcher use to conduct a search? 5. Describe each phase of the research process. a. What is required before data collection can begin? 6. What are th…

4. What makes a wine red versus white? Choose one answer. A. Fermenting the juic

4. What makes a wine red versus white? Choose one answer. A. Fermenting the juice from grapes with their red skins makes red wine B. Fermenting the juice from grapes with white sk…

4. What type of air mass would be responsible for each of the following weather

4. What type of air mass would be responsible for each of the following weather conditions? Write the appropriate air mass (mT, mP, cT, cP, or cA) in each of the spaces below. ___…

4. What will be the phenotype sex of a human with the following genetic make-up?

4. What will be the phenotype sex of a human with the following genetic make-up? a) XY with the SRY gene deleted b) XY with the SRY gene on an autosome: c) XX with a copy of the S…

4. What would Earth\'s seasons be like if Earth’s orbit was perfectly circular (

4. What would Earth's seasons be like if Earth’s orbit was perfectly circular (circle the correct)? Explain your reasoning.             a. Very similar      b. More pronounced    …

4. What would happen if the membrane became permeable to the Y+ ions? Is this mo

4. What would happen if the membrane became permeable to the Y+ ions? Is this movement down an electrical or chemical gradient? Y+ Y+ X- y+ X- Y+ Y+Y+ X Y+ X- * Y+ + Y+ X- Y+ X- Y…

4. What\'s the difference between active and passive transport? 5. What molecule

4. What's the difference between active and passive transport? 5. What molecules are permeable to cell membrane? What molecule are impermeable to cell membrane? How do they cross …

4. What\'s wrong with the following hypothesis? How can it be improved? (Remembe

4. What's wrong with the following hypothesis? How can it be improved? (Remember that I am not asking if the hypothesis is true or not true.a research study would have to be Multi…

4. When multiple ribosomes work along a single RNA molecule: A. they all produce

4. When multiple ribosomes work along a single RNA molecule: A. they all produce the same protein. B. it is called a polyribosome. C. they finish protein synthesis at the same tim…

4. When the helix axis of a closed circular duplex DNA of 3190 bp is constrained

4. When the helix axis of a closed circular duplex DNA of 3190 bp is constrained to lie in a plane, the DNA has a twist (T) of 290. When released, the B DNA takes up its normal tw…

4. When viewing a specimen through a light microscope, scientists use the indivi

4. When viewing a specimen through a light microscope, scientists use the individual components of cells. a. the ribosomes b. the vesicles c. the cytoplasm d. the nucleoplasm to d…

4. Where would you find the cell bodies of the cells responsible for motor funct

4. Where would you find the cell bodies of the cells responsible for motor function in the brain (aka. the upper motor neurons)? 5. In all the afferent sensory pathways below the …

4. Where would you find the cell bodies of the cells responsible for motor funct

4. Where would you find the cell bodies of the cells responsible for motor function in the brain (aka. the upper motor neurons)? 5. In all the afferent sensory pathways below the …

4. Which are true of stroke volume? Choose all correct. (20) a. it is the volume

4. Which are true of stroke volume? Choose all correct. (20)             a. it is the volume per contraction ejected per ventricle             b. an average resting value for stro…

4. Which group of terms is the hamstring muscles? A. biceps, triceps, quadriceps

4. Which group of terms is the hamstring muscles? A. biceps, triceps, quadriceps B. biceps femoris, semimembranosus, semitendinosus C. deltoid, pectoralis major, latissimus dorsi …

4. Which of the following antibody is produced first in the primary immune respo

4. Which of the following antibody is produced first in the primary immune response? a. IgG b. IgM c. IgD d. IgE 5. Which of the following are antigen presenting cells (APCs)? a. …

4. Which of the following are true statements regarding cDNA and genomic librari

4. Which of the following are true statements regarding cDNA and genomic libraries? Please answer and EXPLAIN. a) Genomic libraries prepared from heart tissue and liver cells from…

4. Which of the following is most correct for an enzyme catalyzed reaction? A. T

4. Which of the following is most correct for an enzyme catalyzed reaction? A. The shape of the enzyme is important but the shape of the substrate is not important. B. The shape o…

4. Which of the following lipid bilayers would have the greatest fluidity and pe

4. Which of the following lipid bilayers would have the greatest fluidity and permaeability (at room temperature)? a) A bilayer constructed of saturated phospholipids and fewer ch…

4. Which of the following lists contains only polysaccharides? sucrose, starch,

4. Which of the following lists contains only polysaccharides? sucrose, starch, cellulose cellulose, water, glycogen glucose, fructose, lactose starch, sodium, chlorine a. b. c d.…

4. Which of the following must exist in a population before natural selection ca

4. Which of the following must exist in a population before natural selection can act upon that population? A) genetic variation among individuals B) variation among individuals c…

4. Which of the following pairs is mismatched? a. AV node = located at the base

4. Which of the following pairs is mismatched? a. AV node = located at the base of the SVC b, P wave = depolarization of SA node and contraction of the atria c. SA node pacemaker …

4. Which of the following processes produces oxygen? a) photosynthesis b) water

4. Which of the following processes produces oxygen? a) photosynthesis b) water evaporation c) water vapor condensation d) lightning 5. What holds the Earth's atmosphere down? a) …

4. Which of the following statements about ecosystems is TRUE? A) Energy enters

4. Which of the following statements about ecosystems is TRUE? A) Energy enters ecosystems through primary producers. B) An ecological ecosystem is comprised of a group of species…

4. Which of the following statements does not apply to the nuclear envelope? a.

4. Which of the following statements does not apply to the nuclear envelope? a. It is a double membrane. b. It has pores through which material enters and leaves. c. It is continu…

4. Which of the following statements is false? The centripetal force is the net

4. Which of the following statements is false? The centripetal force is the net force caused by the imbalance between the pressure gradient force and the Coriolis force. a. b. The…

4. Which of the following work to support Koch\'s Postulates? a. Serological tes

4. Which of the following work to support Koch's Postulates? a. Serological tests showed that the sick individual produced antibodies against the pathogens, but healthy individual…

4. Which of the following would you use on a skin wound: a disinfectant or an an

4. Which of the following would you use on a skin wound: a disinfectant or an antiseptic? 5. Of the chernicals we tested, which 2 are typically used as antiseptics? The and the 6.…

4. Which of these statements is the most accurate in describing acid rain (depos

4. Which of these statements is the most accurate in describing acid rain (deposition)? a. Acid rain is produced from the mixing of primary pollutants with rain water. b. Acid rai…

4. Which one has a higher density: a parcel of dry air or moist air at constant

4. Which one has a higher density: a parcel of dry air or moist air at constant pressure and temperature? Approach this question based on the following facts: 1) the density of mo…

4. Which one of the following statements concerning COX-2 inhibitors is correct?

4. Which one of the following statements concerning COX-2 inhibitors is correct? A. the COX-2 inhibitors show greater analgesic activity than traditional NSAIDs. B. the COX-2 inhi…

4. Which statement about carbohydrate biosynthesis during the Calvin cycle react

4. Which statement about carbohydrate biosynthesis during the Calvin cycle reactions is NOT TRUE? A) Rubisco is an enzyme required for CO2 fixation. B) NADPH is the source of elec…

4. Which statement about the pressure gradient force is true? a) It is directed

4. Which statement about the pressure gradient force is true? a) It is directed from low to high pressure everywhere on earth. b) It is directed at a 90­degree angle to isobars. c…

4. Which type of cloud is lens shaped and occurs near mountain ranges? a. Lentic

4. Which type of cloud is lens shaped and occurs near mountain ranges? a. Lenticular b. Mammatus c. Contrail 5. What type of fog forms when a moist air mass moves over a cold surf…

4. While a 67-year-old female is shopping for groceries, she faints and falls. S

4. While a 67-year-old female is shopping for groceries, she faints and falls. She is driven home by a friend. When home, she realizes that she is bleeding from her mouth and is s…

4. Why do humans store more energy as fat versus glucose or glycogen? 5. Name th

4. Why do humans store more energy as fat versus glucose or glycogen? 5. Name the two electron carriers that bring high-energy electrons to the ETC. How many ATP do each of these …

4. Y ou cross two yellow pea plants with smooth seeds (offspring from a cross of

4. Y ou cross two yellow pea plants with smooth seeds (offspring from a cross of a true-breeding smooth plant with a true-breeding green, wrinkled plant). Yellow (Y) is dominant t…

4. You and your postdoctoral mentor are testing two newly developed anti-cancer

4. You and your postdoctoral mentor are testing two newly developed anti-cancer drugs. You have obtained two sets of patient samples to test the drugs on: cancer cells and normal …

4. You are a capable scientist that loves to eat corn based snacks and cereals.

4. You are a capable scientist that loves to eat corn based snacks and cereals. Different companies manufacture some of the snacks and cereals you buy and you are curious whether …

4. You are a mammal (Class Mammalia). List three characters/traits you share wit

4. You are a mammal (Class Mammalia). List three characters/traits you share with ALL MAMMALS that are NOT shared by ANY OTHER type of animal 4a. Consider the traits you listed in…