Which of the following uncommon amino acids are not found in the proteins?

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#Question id: 14296

#SCPH05 I Biotechnology

A two-stage chemostat system is used for production of secondary metabolite. The volume of each reactor is 0.5 m³; the flow rate of feed is 50 l h^{- 1}. Mycelial growth occurs in the first reactor; the second reactor is used for product synthesis. The concentration of substrate in the feed is 10 gl^-1. Kinetic and yield parameters for the organism are:

                                                            

Assume that product synthesis is negligible in the first reactor and growth is negligible in the second reactor. Determine cell concentrations entering the second reactor.

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#Question id: 12904

#SCPH01 Biochemistry

Match the following:

1. Southern Blotting                               i. Melting temperature of DNA strand

2. DNA microchips                                   ii.oligonucleotide matching to DNA sample

3. ASO-PCR                                                 iii.DNA hybridization to oligo arrays

4. DGGE                                                        iv. labeled probe hybridization to DNA  

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#Question id: 5737

#SCPH06 I Botany

When an organism gains one extra copy of a chromosome but not a complete haploid set, the conditions is known as

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#Question id: 3290

#SCPH06 I Botany

Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms?

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#Question id: 7763

#I Life Science/ Life Sciences Group – I-V

Two major sources of mutation are radiation and reactive oxygen species (ROS).The reactive oxygen species hypothesis for aging postulates that 

1) Senescence results from the accumulation of DNA, lipid, and protein damage inflicted by ROS of mitochondrial origin; and

2) Mitochondria of long-lived species should produce high ROS than do mitochondria of short-lived species.

3) the capacity of mitochondria to consume ROS might distinguish long-lived species from short-lived species, rather than differences in ROS generation.