Biology, asked by meetbrilliant, 8 months ago

During vigorous physical exercise, lactic acid is formed from glucose in the muscle cells because there is

(A) Lack of oxygen (C) Excess of carbon dioxide

(B) Lack of water (D) Excess of oxygen

2.The breakdown of pyruvate to give carbon dioxide, water and energy takes place in the

(A) Cytoplasm (C) Mitochondria

(B) Chloroplast (D) Nucleus

3.The respiratory pigment in human beings is

(A) Carotene (C) Chlorophyll

(B) Haemoglobin (D) Melanin

4. The part where exchange of gases takes place is

(A) Trachea (C) Alveoli

(B) Bronchiole (D) Bronchi

5.Which chambers of human heart contain oxygenated blood? A. Left atrium and left ventricle .

B. Left atrium and right ventricle

C. Right atrium and left ventricle

D. Right atrium and right ventricle

6. Which one indicates hypertension or high blood pressure (BP)?

A. 120/80

B. 110/70

C. 110/80

D. 140/90

Answers

Answered by Anonymous

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1.(A) Lack of oxygen

2.(C) Mitochondria

3.(A) Carotene

4.(C) Alveoli

5.C. Right atrium and left ventricle

6.C. 110/80

Answered by Anonymous

$<body bgcolor=77YYHH><marquee direction="up"> 1.(A) Lack of oxygen2.(C) Mitochondria3.(A) Carotene4.(C) Alveoli5.C. Right atrium and left ventricle6.C. 110/80 <body bgcolor=red><marquee direction="down" >$

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