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Which of the above supports the idea that membranes have a fluid character?
A. the ratio of the area of lipids extracted from red cell membranes to the area of themembranes was 2:1B. particles were seen in freeze-fractured samples of membranesC. addition of certain antibodies to cells caused patching of the antigens.D. Certain proteins can be labeled from either side of a membraneE. Certain proteins can be labeled from only one side of a membrane.
What subgroup of Protists are strict phorotrophs? What phototroph? Why are they strict phototrophs?
Trace a route of air from the nares to an alveolus. Name subdivisions of organs where applicable, and discriminate between conducting and respiratory zone structures. how large a force does she exert on the sled.
Aphids can reproduce sexually and asexually. Females reproduce by themselves and give birth to live females in summer. They also reproduce sexually and lay eggs that survive in summer and eggs that survive in the winter and hatch in the spring.
The msh6 protein is involved in mismatch repair. How does mismatch repair differ from proofreading.
Assume you have identified a mutant E. coli strain that cannot synthesize histidine. To determine the location of the his- mutation on the E. coli chromosome.
As part of an effort to combat bacterial infection you have synthesized a compund that binds to the active site of the critical bacterial enzyme.
You find two mutations that cause blue wings (b blue is recessive to b+ normal) and spiny bristles (W wiry is dominant to W+ normal). They are linked to this chromosome (pictured). Based on test cross data, complete the map to include these genes.
A particular Drosophila female that is wild-type in appearance is known to be heterozygous for the three recessive mutations black body (b), curved wings (c) and purple eyes (p).
Theoretically, plants could increase or decrease the size of individual stomata and still achieve the same result as varying the number of stomata. But they dont do this- plants only vary stomata number, not size. Why?
Discuss and explain the differences between aerobic carbon cycle and anaerobic carbon cycle. You can copy the graph from the book.
Evaluate and contrast the major muscle groups of the upper and lower limbs and relate their similarities and differences to their function.
A 20 year old garden presents to his family for treatment of what he described as poison ivy. The patient hand and arm appear red and are covered with oozing blisters and crusts. Which of the following best describes the pathogenesis of this skin ..
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