Which blood cell is responsible for the absorption of oxygen in the blood?

Where does the right ventricle send blood?

A flap tissue that prevents the backflow of blood between the atria and the ventricle.

Which blood cell is responsible for blood clotting?

When we inhale, particles are trapped in a layer of mucus and tiny hairs found in the nasal cavity. What do you call these tiny hairs that filter particles to enter the lungs?

The following are risk factors for high blood pressure EXCEPT:

The brown sticky substances found in a cigarette that can narrow the blood vessels is called _________.

Why is DNA the "blueprint of life"?

Which is TRUE about the number of chromosomes in humans?

It is referred to as the union of egg and sperm cells to form a new organism.

Which is the correct order of air flow during exhalation?

Second hand smoke emitted by a lit cigarette combined with the smoke exhaled by an active smoker is referred as _______.

If hypertension is the medical term for high blood pressure, what is for hypotension?

What common lung disease is caused mainly by smoking and having a hard time breathing?

In a DNA structure, which compounds are responsible for its backbone?

A cross between a black cat and a tan cat produces a tabby pattern (black &tan fur together). What pattern of inheritance does this illustrate?

If one of the two X chromosomes in females has an allele for hemophilia, what would be her phenotype? 

For blood types, if one parent is heterozygous A and the other parent is heterozygous B, what could be the possible blood types of children?

 Which mechanism of evolution takes place among organism as suggested by Charles Darwin?

Which is the correct sequence of classification from highest to lowest level?

Tan colored birds are the result of the cross between a white (W) and a brown (B) colored birds. If the off springs are 50% tan and 50% white, what are the genotypes of their parents?

How many percent would be the chance of the children to inherit hemophilia if a father has hemophilia (X^hY) and the mother is non-hemophilic (X^HX^H)?

A grass plot with an area of 4 square inch is occupied by 100 termites. What isthe population density?

Which stage of cellular respiration produces the greatest number of ATP?

Why is water necessary in photosynthesis?