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Questions in biology

[Homework Help] Exons of a gene are defined as: A. the untranslated regions of the corresponding mRNA B. regions in the corresponding mRNA that are involved in initiation of transcription C. regions that are not transcribed by RNA polymerase D. regions that are excised from the corresponding protein after it is synthesized E. regions that remain in the corresponding mRNA after splicing

[Homework Help] Can you give me the order of biomes from coldest to hottest, please? - Tundra - Taiga - Temperate deciduous forest - Temperate grassland - Temperate woodland (chaparral) - Desert - Tropical savanna - Tropical rain forest

[Homework Help] Which fossil occurs on the most landmasses? What does this suggest about when these particular continents broke up?

[Homework Help] Donald Johanson, Tom Gray, and others discovered a hominid that lived in East Africa _________ million years ago and nicknamed her Lucy. Her scientific name was given as __________. (A) 35, Homo habilis (B) 3.5, Homo africanus (C) 5.5, Australopithecus africanus (D) 3.0, Australopithecus afarensis (E) 5.5, Australopithecus boisei

[Homework Help] What part of the cell produces ATP for the blueberry plant to grow? A. Mitochondrion B. Cytoplasm C. Ribosome D. Nucleus

[Homework Help] During the evolution of life on Earth, which photosynthetic organisms were initially responsible for raising atmospheric oxygen concentrations from less than 1 percent to about 20 percent? A. cyanobacteria B. archaea C. diatoms D. flowering plants E. mosses

[Homework Help] The skeletal system does all of the following EXCEPT: A. support B. transport C. protect D. digest E. store

[Homework Help] Which organism would more closely resemble its parent: one produced by asexual reproduction or one produced by sexual reproduction? Why?

[Homework Help] Which statement best describes a capsid? A. A capsid defines the shape of the virus. B. A capsid is the outside coat of the virus. C. A capsid is a protein coat that protects the genetic material of the virus. D. A capsid is either helical, icosahedral, or complex.

[Homework Help] Cellular respiration involves a series of chemical reactions. Which of the following is a primary way that enzymes affect these reactions? A. They decrease the pH of the products. B. They increase the rate of the reactions. C. They take the place of oxygen as a reactant. D. They change the location of the reactions in the cell.