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TLS Online TPP Program

#Question id: 2121

Which of the following membrane activities requires energy from ATP hydrolysis?

#SCPH06 I Botany

  1. facilitated diffusion of chloride ions across the membrane through a chloride channel

  2. movement of Na+ ions from a lower concentration in a mammalian cell to a higher concentration in the extracellular fluid

  3. movement of glucose molecules into a bacterial cell from a medium containing a higher concentration of glucose than inside the cell

  4. movement of carbon dioxide out of a paramecium

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TLS Online TPP Program

#Question id: 13042

#SCPH01 Biochemistry

For analyzing DNA sequences, two techniques have been developed, one is _________ method frequently termed_________, involving the enzymatic synthesis of DNA and stopping the synthesis at specific nucleotides. While another technique, the __________ method of DNA sequencing developed by ___________ is often used for sequencing small fragments of DNA.
TLS Online TPP Program

#Question id: 4358

#SCPH28 | Zoology

Which of the following mechanisms is used to coordinate the expression of multiple, related genes in eukaryotic cells?
TLS Online TPP Program

#Question id: 15833

#SCPH12 I Genetics

Your friends Ben and Jane are contemplating having children and seek your genetic counsel. Ben and Jane are unrelated, but both have younger brothers with the same, extremely rare genetic trait. (In fact, Ben and Jane met at a support group meeting for children and families of children with this rare disorder.) Ben’s parents and Jane’s parents are all unaffected.          
Assume that the trait is autosomal dominant with 80% penetrance in heterozygotes and 100% penetrance in homozygotes. If not affected, what is the probability that the child is a carrier?
TLS Online TPP Program

#Question id: 551

#SCPH28 | Zoology

Enzymes differ from other catalysts in that only enzymes:
TLS Online TPP Program

#Question id: 2959

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

During which of the following mitotic phases are chromosomes dispersed the most?