Which are the special proteins in muscles that contract and relax to cause movement?

 

The nucleotides that are present in DNA molecule are 4. They are Thymine (T), Guanine (G), Adenine (A) and Cytosine (C).

Here in this Adenine pairs with Thymine (A - T) and Cytosine pairs with Guanine (C - G).

Some common foodborne illness are like vomiting, diarrhea, fever, chills and abdominal pain. These all are acute i.e, they last for only some time and be cured without medication and some times by medication.

Amarbel is an example of parasite.

True, Stress is a factor that contributes to heart disease risk.

More factors that contributes to heart disease risk are blood pressure, cholesterol, smoking, physical inactivity and overeating.

The function of a protein macromolecule is

- Moving things in and out of cells.

- Transporting other molecules in the body.

- Making up the connective tissue in tendons.

REM sleep i.e, Rapid Eye Movement sleep is also known as paradoxical sleep because the measures of the brain activity closely resemble waking consciousness, but the person is incapable of moving as the brain is in fully active mode that time.

The correct order of evolutionary history from the above given options is jellyfish, reptiles, mammals.