The first stage of development in which a cavity appears is the__________?
(A) Neurula
(B) Morula
(C) Gastrula
(D) Balastula
In living organisms the lubricant which provides protection against damage resulting from friction is___________?
(A) Carbohydrates
(B) Fatty acid
(C) Water
(D) Protein
The basic structural unit of a chromosome is____________?
(A) The centromere
(B) Nuceleosome
(C) Telomere
(D) Histone
Exposure to low temperature stimulates plants to flower. This is called___________?
(A) Photoperiodism
(B) Thermotropism
(C) Vernalisation
(D) Thermoregulation
In Cx(H2O)y x ranges from______________?
(A) 1 to 3 thousand
(B) 3 to many thousand
(C) 3 to 5 thousand
(D) 5 to 9 thousand
The cells present in testes and secrete testosterone are___________?
(A) Sertoli cells
(B) Germinal cell
(C) Interstitial cells
(D) Spermatocyte
Glycolipids and glycoproteins have structural role in the ______________ matrix of animal and bacterial cell?
(A) Extracellular
(B) Intracellular
(C) Both of these
(D) Glucose
Which one of the following syndrome is the result of meiotic non dysjunction?
(A) Klinefelters syndrome
(B) Turners syndrome
(C) Downs syndrome
(D) All of these
Which one of the following is correct sequence of stages of prophase 1 of meiosis
(A) Diakinesis diplotene pachytene leptotene zygotene
(B) Zygotene leptotene pachytene diplotene diakinesis
(C) Leptotene zygotene pachytene diplotene diakinesis
(D) Pachytene leptotene diplotene zygotene diakinesis
Interconversion of carbohydrates proteins and lipids in living cells are an example of____________?
(A) Coordinated catabolic activities
(B) Coordinated anabolic activities
(C) Both A and B
(D) Any one