The organ that supports the transport of nutrients and waste between the mothers and fetus’ blood is the

Which movement of substances through a cell membrane against a concentration gradient requires energy?  

The primary consumers that feed directly on green plants are called

The two reactions shown below represent processes that occur in living organisms. Which of the following statements is correct about the two reactions?  

Scientists have developed a strain of bacteria that can manufacture human insulin. What scientific technology did they use to make this new form of bacteria?

In the body, polymers must be broken down into smaller building blocks called monomers in order to be digested. The chemical reaction shown below is an example of a(n) _________ reaction  

The ____ will store water, pigments and toxins in plant cells.

B cells and T cells are made in  ____ and once mature both types migrate to the _____.

Which of the following is the correct term for bacterial proteins that have the ability to cut both strand of a DNA molecule at a specific nucleotide sequence?

Microsoft’s Windows platform dominates the market for personal computer operating systems. By continuously upgrading and stretching the technology underlying its Windows system, Microsoft is pursuing a strategy of: