Explain why some people fear genetically modified foods despite commercial organization claims that these foods are safe for human consumption
What will be an ideal response?
Some people feel that genetically modified foods haven't been around long enough to allow for assessing the long-term effects of consumption. These foods may contain allergens that could lead to serious medical problems. The use of genetically modified foods could lead to herbicide resistance in other agricultural crops and weeds due to cross-pollination. Pollination of these plants could contaminate other plants and produce "super" weeds.
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Which of the following is NOT correct regarding the purple photosynthetic bacteria photosynthetic apparatus?
A. Possesses bacteriochlorophylls a or b B. Performs anoxygenic photosynthesis C. Has intracytoplasmic membranes (ICMs) to provide space for photosynthetic units (PSUs) D. Apparatus is continuous with the plasma membrane E. Apparatus is straight to decrease surface area and contain reactions
Which of the following best described the surfaces of clay particles in soil?
a. They often bear positively charged ions. b. They release water to plants easily. c. They often bear negatively charged ions. d. They are generally hydrophobic.
Which statement most accurately describes how we interpret the sensation of taste?
A. The taste buds contain microvilli that project into the taste pore. The molecules bind to receptor proteins located on the microvilli which send a nerve impulse to the spinal cord for interpretation. B. The taste buds contain microvilli that project into the taste pore. The molecules bind to receptor proteins located on the microvilli which send a nerve impulse to the brain for interpretation. C. The tongue moves molecules into the mouth so that the sinuses can detect the various scents. This information is then sent to the brain for interpretation. D. The taste buds contain receptor proteins that are located on the tongue. The molecules bind to receptor proteins which send a nerve impulse to the brain for interpretation. E. None of these describe how we interpret taste.
Carbolfuchsin is the ________ in the acid-fast stain
A) primary stain B) mordant C) decolorizer D) counterstain E) fixing reagent