Which are the special proteins in muscles that contract and relax to cause movement?
Amoeba belongs to the phylum
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The first step of process of nutrition is the breakdown of glucose into a three-carbon molecule called ______.
Which of the following is a fish?
Blood is red in colour due to the presence of __________
The largest artery in human body is
Clove is obtained from
What is the main purpose of white blood corpuscles?
Limbs of frog, lizard, bird and human are example of ______ organs.