Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 52635
TLS Online TPP Program

#Question id: 18606

In the PCR denaturation temperature calculated by using the

#SCPH01 Biochemistry
  1. Wallace rule, which is, Tm = 8 × (number of GC base pairs) + 6 × (number of AT base pairs)
  2. Wallace rule, which is, Tm = 4 × (number of AU base pairs) + 2 × (number of GC base pairs)
  3. Wallace rule, which is, Tm = 4 × (number of GC base pairs) + 2 × (number of AT base pairs)
  4. by using Boyles law and gas equation
More Questions
TLS Online TPP Program

#Question id: 7287

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

Following statements are regarding to the the floral quartet model and the underlying ABCDE model of organ identity determination in Arabidopsis thaliana.

A. Five floral organ identities (sepals, petals, stamens, carpels, and ovules) are specified by the formation of floral organ-specific tetrameric complexes of MADS-domain transcription factors that bind to two nearby enhancer elements, forming a DNA loop in between.

B. A complex of two class A proteins (APETALA 1) and two class E proteins  (SEPALLATA) determines petal identity.

C. A complex of one class A protein, one class E protein, and one of each of the class B proteins (APETALA 3 and PISTILLATA) determines sepal identity.

D. A complex of one class E protein, two class B proteins, and one class C protein (AGAMOUS) determines stamen identity, while a complex of two class E proteins and two class C proteins determines carpel identity.D. A complex of one class E protein, two class B proteins, and one class C protein (AGAMOUS) determines stamen identity, while a complex of two class E proteins and two class C proteins determines carpel identity.

E. A complex of one class E protein, one class C protein, and one of each of the class D proteins (SHATTERPROOF and SEEDSTICK) controls ovule identity.

Which of the following combination are correct?
TLS Online TPP Program

#Question id: 7753

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

The best-studied type of plant autophagy, specialized organelles called autophagosomes enclose the cytoplasmic components and fuse with the vacuole, this is called
TLS Online TPP Program

#Question id: 4826

#SCPH12 I Genetics

In Drosophila melanogaster, vestigial wings are determined by a recessive allele of a gene that is linked to a gene with a recessive allele that determines black body color. T. H. Morgan crossed black-bodied, normal-winged females and gray-bodied, vestigial-winged males. The F1 were all gray bodied, normal winged. The F1 females were crossed to homozygous recessive males to produce testcross progeny. Morgan calculated the map distance to be 17 map units. Which of the following information is correct about the testcross progeny?
TLS Online TPP Program

#Question id: 4582

#SCPH06 I Botany

 Fossils found in strata reveal that ________.
TLS Online TPP Program

#Question id: 304

#SCPH05 I Biotechnology

As compared to covalent compounds electrovalent compounds generally possess ___________