NEET 2020 Biology Questions

Which of the following hormones acts to conserve sodium ions in the body? ()

Hormones that regulate blood calcium levels are: ()

Name a peptide hormone which acts mainly on hepatocytes, adipocytes and enhances cellular glucose uptake and utilisation. ()

Which of the following statements is correct about melatonin? ()

In females, FSH stimulates: ()

A person shows symptoms of high blood sugar, frequent urination and thirst. Which hormone is likely deficient? ()

Which endocrine gland is unpaired? ()

Match the following with respect to meiosis: (A) Zygotene — (i) Terminalization (B) Pachytene — (ii) Chiasmata (C) Diplotene — (iii) Crossing over (D) Diakinesis — (iv) Synapsis []

Identify the correct statement with regard to G₁ phase (Gap 1) of interphase. []

Meiotic division of the secondary oocyte is completed:[]

Some dividing cells exit the cell cycle and enter a vegetative inactive stage. This is called quiescent stage (G₀). This process occurs at the end of: []

Which of the following pairs is of unicellular algae? []

Floridean starch has structure similar to: []

Strobili or cones are found in: []

Ray florets have []

The ovary is half inferior in: []

Ray florets have: []

Match List I with List II: List I A. F1 particles B. Histones C. Axoneme D. Cisternae List II I. Chromosomes II. Cilia III. Golgi apparatus IV. Mitochondria

Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?

Which of the following statements about inclusion bodies is incorrect?

Identify the basic amino acid from the following: ()

Identify the substances having glycosidic bond and peptide bond, respectively in their structure. ()

Which one of the following is the most abundant protein in the animals? ()

The sequence that controls the copy number of the linked DNA in the vector is termed: ()

Choose the correct pair from the following: ()

In gel electrophoresis, separated DNA fragments can be visualized with the help of: ()

The specific palindromic sequence which is recognized by EcoRI is: ()

Identify the wrong statement with regard to restriction enzymes. ()

If the distance between two consecutive base pairs is 0.34 nm and total number of base pairs is 6.6 × 10⁹, then DNA length is approximately: ()

The first phase of translation is: ()

Which of the following statements is correct? ()

Name the enzyme that facilitates opening of DNA helix during transcription: ()

[] Match the following: Match the following: Column I (a) Placenta (b) Zona pellucida (c) Bulbo-urethral glands (d) Leydig cells Column II (i) Androgens (ii) Human Chorionic Gonadotropin (hCG) (iii) Layer of the ovum (iv) Lubrication of the penis

[] Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?

[] Meiotic division of the secondary oocyte is completed:

Select the correctly matched pair: ()

How many true-breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits? ()

Experimental verification of the chromosomal theory of inheritance was done by: ()