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Questions in biology

[Answered] Which job is the most likely one to employ a plant breeder? A) Working in a retail store B) Working for a genetic engineering firm C) Working as a landscape architect

[Answered] What type of cells secrete antibodies?

[Answered] Type the correct answer in the box. Spell the word correctly. Where does digestion begin? Digestion begins in the __________.

[Answered] Which one of the following diseases is not correctly matched to its reservoir? A) treponema-animal B) rabies-animal C) botulism-nonliving D) typhoid fever-nonliving E) toxoplasmosis-cats Which of the following is not one of Koch's postulates? A) The same pathogen must be present in every case of the disease B) The pathogen must be isolated and grown in pure culture from the diseased host C) The pathogen from pure culture must cause the disease when inoculated into a healthy, susceptible laboratory animal D) The disease must be transmitted from a diseased animal to a healthy, susceptible animal by some form of contact E) The pathogen must be isolated in pure culture from an experimentally infected lab animal The emergence of new infectious diseases is probably due to all of the following except A) the need of bacteria to cause disease B) the ability of humans to travel by air C) a pathogen crossing the species barrier D) the increasing human population E) changing environments (e.g., flood, drought, pollution)

[Answered] Listen. What is the function of bacterial pili? A. A structure used in bacterial movement B. It contains genetic material C. A structure responsible for the exchange of genetic material between two bacteria. D. Protein synthesis

[Answered] How does the top level of an energy pyramid compare to the bottom level of that energy pyramid? A. It contains the least amount of the total energy. B. It shows a reversal of the flow of energy. C. It contains the greatest amount of the total energy. D. It contains the same amount of the total energy.

[Answered] What happens at the end of diastole? A. The atria contract to empty the remaining amount of blood into the ventricle. B. The ventricle dilates to accommodate the entry of blood. C. The atrial pressure becomes higher than the ventricular pressure. D. The inferior vena cava and pulmonary pressure increases.

[Answered] What occurs to the protein organization and shape when the protein is exposed to hydrochloric acid in the stomach during digestion? A. The protein structure changes from primary to tertiary. B. The protein structure changes from tertiary to primary. C. There is no change to protein structure when exposed to an acid. D. The protein structure attaches to another protein structure to form a quaternary complex.

[Answered] Meiosis is a process used for A. repair of damaged cells. B. growth of an organism. C. asexual reproduction. D. production of stem cells. E. production of gametes.

[Answered] Which of the following is an example of a common neural tube defect in infants? A. Periventricular leukomalacia B. Spina bifida C. Atrial septal defect D. Scoliosis