Answer: b. Muscles
A metazoa is a division of animal kingdom that includes all animals expect protozoa and sponges. Metazoa division includes multicelluar animals, which exhibit highly differentiated cells. They have muscular and nerve system and well coordinated tissues and organs. Locomotion requires a coordination activity of muscular, skeletal and neural system. It is mainly achieved by contraction and relaxation of muscles that occurs due to specialized muscle proteins named as actin and myosin which receives signals from nerves.
Hence, locomotion in metazoa is due to contraction of muscles.
Hydrophilic heads, hyrdophobic tails. Heads are made of phosphate and the tails are made of lipids.
Answer:
True
Explanation:
Metabolic syndrome as the name implies is a cluster of metabolic related risk factors that increases the risk of cardiovascular disease, although metabolic syndrome can increase the risk of cardiovascular disease, it can also increase the risk of type -2 diabetes mellitus. Examples of thee clusters of risk factors are elevated blood pressure, dyslipidemia etc.
Mesenger rna is a stuff that hatch dna to amino acid
The purpose of a vortex instrument is to mix "small vials of liquids" in a laboratory.
Explanation:
A vortex instrument or a mixer is an laboratory instrument which is used to mix liquids in small vials.
The term vortex means swirling of a mass of air and this instrument also mixes liquid through swirling movement inside a tube.
A vortex unit is run by an electric motor which moves a rubber cup attached to the drive shaft.
The rubber cup swirls or oscillates in a circular motion and when a test tube with the liquid is pressed in the cup, the liquid contents get mixed through the transmission of the circular motion from the cup to the liquid. The speed of the rotation can be controlled.