TLS Online TPP Program

#Question id: 802


A single-stranded DNA molecule contains 40 nucleotides with equal amounts of A, C, G, and T. This DNA strand can combine with a complementary DNA strand to form a double-stranded DNA molecule. Which is a possible sequence and structure for this DNA molecule?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. If the single-stranded molecule has the sequence 5’-(ATGC)10, then its double- stranded form could assume a Z-DNA structure.

  2. If the single-stranded molecule has the sequence 5’-(GATC)10, then its double-stranded form could assume an H-DNA structure.

  3. If the single-stranded molecule has the sequence 5’-(CTGA)10, then its double-stranded form could assume a hairpin structure.

  4. If the single-stranded molecule has the sequence 5’-(TGAC)10, then its double-stranded form could assume a cruciform structure.

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TLS Online TPP Program

#Question id: 28944

#Unit 7. System Physiology – Animal

Which of the following Prediction is correct about adrenocorticotropic hormone (ACTH) ? 
a) CRH Stimulates secretion of ACTH by corticotropes
b) it controls the secretion of cortisol by the activation of adenylyl cyclase via Gαq
c) it controls the secretion of cortisol by the activation of adenylyl cyclase via Gαs

TLS Online TPP Program

#Question id: 28945

#Unit 7. System Physiology – Animal

Which of the following hormones is involved to promotes the mammary gland development and milk production?

TLS Online TPP Program

#Question id: 28946

#Unit 7. System Physiology – Animal

GnRH is carried to the anterior pituitary, stimulates the secretion of hormones by gonadotropes. these hormones are; 

TLS Online TPP Program

#Question id: 28947

#Unit 7. System Physiology – Animal

Kallmann syndrome exhibit gonadal dysfunctions in male, which of the following statements is incorrect ?
A. a condition that causes hypogonadotropic hypogonadism (HH) 
B. an impaired sense of smell called anosmia 
C. it causes due to the deficiency of gonadotropin-releasing hormone (GnRH) 
D. they have higher level of circulating gonadotropins
E. a condition that causes hypergonadotropic hypergonadism (HH)

TLS Online TPP Program

#Question id: 28948

#Unit 7. System Physiology – Animal

FSH and LH is involved to which of the following activity?

TLS Online TPP Program

#Question id: 28949

#Unit 7. System Physiology – Animal

GHRH-Hypothalamus stimulates growth hormone secretion by utilizing____