Answer:
The nitrogenous bases present in DNA are purine (adenine or guanine) and pyrimidine (cytosine or thymine). Uracil is absent from DNA. Uracil is present as pyrimidine base in ribonucleotides which are components of RNA.
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.
Estrogen is a female hormone and testosterone is a male hormone. Therefore, neither can control hunger since both genders experience this. Epinephrine is just another word for adrenaline. So, your answer is D, ghrelin.
There is no medium between the sun and Earth other than very thin solar wind. Without a medium, no conduction or convection. That leaves only radiation, which is what you feel on your skin when you step into the sunlight. Of course, once the heat is transferred to the Earth by radiation, it now has a medium. So the answer is C. Radiation
<span>it is false.</span> it can't because it a guest so no.
