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TLS Online TPP Program

#Question id: 9202

Which of the following statements regarding extinction is accurate?

#SCPH06 I Botany

  1. A large percentage of species are immune from extinction; however, rates of extinction may increase with continued human impacts.

  2. Extinctions occur only periodically, separated by long time spans with no extinctions.
  3. Extinction is occurring at a similar rate now as compared to historical fossil evidence.

  4. The small-population approach is inferior to the declining-population approach if the goal is to conserve the maximum number of species in a given region.

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TLS Online TPP Program

#Question id: 18617

#SCPH01 Biochemistry

Both the metal ion used in PCR have different functions
TLS Online TPP Program

#Question id: 8918

#SCPH06 I Botany

In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. A consequence of this occurrence is that
TLS Online TPP Program

#Question id: 4919

#SCPH06 I Botany

Genes for cytoplasmic male sterility in plants are generally located in
TLS Online TPP Program

#Question id: 14255

#SCPH05 I Biotechnology

Hybridoma cells immobilized on surfaces of Sephadex beads are used in a packed column for production of monoclonoal antibodies (Mab). Hybridoma concentration is approximately X = 5 g/l in the bed. The flow rate of the synthetic medium and glucose concentration are Q = 2 l/h and S0 = 40 g/l, respectively. The rate constant for Mab formation is k = 1 gX/l-d. Assume that there are no diffusion limitations and glucose is the rate limiting nutrient.  If Yp/s is 4 mg Mab/g glu, determine the effluent Mab concentration of the system?
TLS Online TPP Program

#Question id: 4721

#SCPH01 Biochemistry

PKU, results from a recessive allele; persons homozygous for this allele, if untreated, exhibit mental retardation, blue eyes, and light skin color. This character categorized as