A compound has a pKa of 7.4. To 100 mL of a 1.0 M solution of this compound at pH 8.0 is added 30 mL of 1.0 M hydrochloric acid. The resulting solution is pH:

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#Question id: 424

#SCPH05 I Biotechnology

Phosphorylation at the expense of ATP is catalyzed by ________.

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#Question id: 938

#SCPH05 I Biotechnology

Physiological roles for glutamate dehydrogenase include all of the following, except

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#Question id: 15149

#SCPH12 I Genetics

In this problem we will explore some of the many ways that mutations in two different genes can interact to produce different Mendelian ratios. Consider a hypothetical insect species that has red eyes. Imagine mutations in two different unlinked genes that can, in certain combinations, block the formation of red eye pigment yielding mutants with white eyes. In principle, there are two different possible arrangements for two biochemical steps responsible for the formation of red eye pigment. The two genes might act in series such that a mutation in either gene would block the formation of red pigment. Alternatively, the two genes could act in parallel such that mutations in both genes would be required to block the formation of red pigment.

Further complexity arises from the possibility that mutations in either gene that lead to a block in enzymatic activity could be either dominant or recessive. If the crosses is made between a wild type insect with red eyes and a true breeding white eyed strain with mutations in both genes. Such considerations yield the Pathways in series with recessive mutations in both genes, what will be the phenotype in F1 progeny?

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#Question id: 3439

#SCPH06 I Botany

Male insects attempt to mate with orchids but eventually stop responding to them. What term best applies to this behavior?

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#Question id: 5431

#SCPH06 I Botany

Plant having height 6 cm are allowed to cross with plant having height 2 cm , all F1 progeny having height uniform 4 cm were allowed selfing to produced F2 progeny in which 3 plant out of  8 having height  4 cm . what are number of polygene involve in that trait ?