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Class 11 - Biology मॉक टेस्ट

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नमूना प्रश्न

Class 12 Biology
A transcription unit in DNA is best defined as:
A The region of DNA from the promoter to the terminator, including the structural gene and regulatory sequences
B The complete set of genes in an organism
C A sequence of RNA that codes for a protein
D A protein factor that binds to DNA to initiate transcription
NEET Biology
Which of the following is the primary function of the hormone insulin in humans?
A Increase blood glucose levels
B Decrease blood glucose levels
C Increase blood calcium levels
D Decrease blood calcium levels
NEET Biology
Which of the following is the correct statement about the "Human Genome Project" (HGP) — its objectives, timeline, and outcomes?
A The HGP (1990-2003) mapped and sequenced all ~3 billion base pairs of human DNA; it found ~20,500 protein-coding genes (fewer than expected) and revealed that only ~1.5% codes for proteins
B The HGP was completed in 2005 and found that humans have over 100,000 protein-coding genes, making us more complex than previously thought
C The HGP sequenced only the Y chromosome and focused exclusively on identifying disease-causing genes
D The HGP was completed in 1995 and determined that humans share 99.9% DNA sequence identity with chimpanzees, which was its primary finding
Class 12 Biology
The placenta produces all of the following hormones EXCEPT:
A Human chorionic gonadotropin (hCG)
B Relaxin
C Oestrogen
D Follicle stimulating hormone (FSH)
NEET Biology
Which of the following organisms would be placed in Kingdom Monera?
A Bacillus subtilis
B Amoeba proteus
C Saccharomyces cerevisiae
D Euglena gracilis
NEET Biology
Which of the following structures is found in the inner membrane of mitochondria?
A Cristae
B Grana
C Thylakoids
D Stroma
Class 11 Biology
Krebs cycle (citric acid cycle) occurs in which part of the mitochondrion?
A Matrix (innermost compartment)
B Outer membrane
C Inner membrane (cristae)
D Intermembrane space
NEET Biology
Which of the following is the correct match of the chromosome number with the condition?
A Turner syndrome — 45, X0
B Klinefelter syndrome — 47, XXY
C Down syndrome — 47, +21
D All of the above

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