Online Tests 2017

GK Science: Some facts about Biology

Hello Aspirants.
Here we have given some important facts of Biology. We hope it will help you to know about biology and to score more marks in General science.

  • Length of Alimentary Canal Approximately-  8 metres.
  • BMR (Basal Metabolic Rate) – 1600 K. Cal / day.
  • Number of Cells in Body 75 trillion
  • Longest Bone Femur (Thigh bone).
  • Weight of Brain : 1400 gms
  • Blood Volume 6.8 litres (in 70 kg body)
  • Normal B.P 120 / 80 mm Hg
  • Number of R.B.C (a) In Male : 4.5 – 5.0 million / cubic mm.(b) In Female : 4.0 – 4.5 million / cubic mm
  • Life Span of R.B.C : 120 days
  • Normal W.B.C Count 5000 – 1000 / cubic mm
  • Life Span of W.B.C : 3 – 4 days
  • L.C. (Differential Leucocyte Count)
  • (a) Basophils : 0.5 – 1%
  • (b) Eosinophils : 1 – 3%
  • (c) Monocytes : 3 – 8%
  • (d)Neutrophils : 40 – 70%
  • (e) Lymphocytes : 2 – 25%
  • Blood Platelets Count : 2,00,000 – 4,00,000 / cubic mm
  • Haemoglobin (a) In Male : 14 – 15.6 gm / 100 c.c. of blood(b)In Female : 11 – 14 gm / 100 c.c. of blood
  • Hb Content in Body 500 – 700 gm
  • Universal Blood Donor:  O Rh -ve
  • Universal Blood Recipient : AB
  • Blood Clotting Time: 2 – 5 minutes
  • Average Body Weight: 70 kg
  • Normal Body Temperature : 98.4° F or 37° C
  • Breathing Rate : 16 – 20 / minute
  • Dental Formula Adult : 2123 / 2123 = 32;
  • Child : 22 Milk Teeth
  • Largest Endocrine Gland : Thyroid
  • Gestation Period 9 months (253 – 266 days)
  • Normal Heart Beat” 72 – 75 / minute
  • Largest Gland : Liver
  • Largest Muscle in the Body Gluteus maximus (Buttock Muscle)
  • Largest Artery:  Abdominal Aorta
  • Largest Vein:  Inferior Venacava
  • Largest W.B.C : Monocyte
  • Smallest W.B.C : Lymphocyte
  • Longest Nerve : Sciatic
  • Longest Cell : Neuron (Nerve Cell)
  • Menstrual Cycle : 28 days
  • Menopause Age : 45 – 50 Years
  • Minimum Distance for proper vision : 25 cm
  • Pulse Rate 72 / minute.
  • Normal Sperm Count 200 – 350 million / ejaculation.
  • FSR (normal Erythrocyte Sedimentation rate) 4 – 10 min / hr
  • pH of Gastric Juice : 1.4
  • pH of Urine : 6.0
  • pH of Blood: 35 – 7.45
  • pH of Bile : 7.5
  • pH of Pancreatic Juice : 8.5
  • Total Number of Muscles in the Body: 639
  • Total Number of Bones in the Body : 206
  • Largest Organ of Human Body:  Skin