Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 43414
TLS Online TPP Program

#Question id: 5058

 In the formation of vertebrate eye, optic vesicle and head ectoderm are-

#SCPH01 Biochemistry

  1. Inducer and responder respectively

  2. Responder and inducer respectively

  3. Both are inducer

  4. Both are responder

More Questions
TLS Online TPP Program

#Question id: 2679

#SCPH06 I Botany

When the same region, or locus, of a chromosome has two (or more) slightly different DNA sequences in different chromosomes or individuals of the same species, these are described as
TLS Online TPP Program

#Question id: 413

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

The hydrolysis of ATP has a large negative DG'°; nevertheless it is stable in solution due to:
TLS Online TPP Program

#Question id: 10510

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

Constitutive chemical defenses are effective against many different herbivores, including insects and mammals. Hemlock (Cicuta sp.) produces which toxins that a polyacetylene prolongs the repolarization of neuronal action potentials.
TLS Online TPP Program

#Question id: 15620

#SCPH28 | Zoology

Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition Lac– strain, called lac3–, is linked to the Tn5 insertion. From a strain carrying the Tn5 insertion and lac3– mutation you isolate an F’ that caries a region of the chromosome that includes both Tn5 and the linked Lac region. Introduce this F’ into an F– strain carrying lac1– by selecting for Kanr. These merodiploids express ß-galactosidase normally. What does this result tell you about the relationship between the lac3– and lac1- mutations?  
TLS Online TPP Program

#Question id: 10942

#SCPH28 | Zoology

A 45-year-old man presents to the emergency room with a 2-week history of diarrhea that has gotten progressively worse over the last several days. He has minimal urine output and is admitted to the hospital for dehydration. His stool specimen is positive for parasitic eggs. Which type of WBCs would have an elevated number?