Oxygen (O2) and carbon dioxide (CO2) are exchanged among the cells, in the blood, and air in the lungs. What is this process called?

Which blood cells can fight the bacteria or any foreign material that enters to the body?

Which valve of the heart is found between the left atrium and left ventricle?

Which arteries carry deoxygenated blood?

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

It is a physical and functional unit of heredity.

Visible expression of a genotype. e.g., brown eyes or attached earlobes.

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?

In the heterozygous condition, both alleles are expressed equally with NO blending! It is represented by using two DIFFERENT capital letters.

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

Which is an example of sex - influenced trait among humans? 

If Roberto’s father has hemophilia and his mother is a carrier, what is the chance that Roberto would inherit the disease? Give the percentage.

The number of individual species per unit area at a given time is called population

The maximum population size that an environment can support is

Which are required to start the light-dependent reaction of photosynthesis?

Which is not the product of photosynthesis?

In the food making process, plants absorb water (H2O) and Carbon dioxide (CO2) to release oxygen (O2) and produce glucose (C6H12O6). In which part of photosynthesis is oxygen released?

Which are required to start Krebs cycle?

Cellular respiration will not occur in the absence of____________.