Answer:
1c. Pharyngeal pouches
2d. Reduce water concentration
3b. A diploid (2N) adult organism
4c. Duck
5a. a chimpanzee figuring out how to use a new tool to obtain a hidden food source
6a. salamander
7c. Annelids and mollusks
8b. cell wall and chloroplasts
9c. seeds
10d. Protection and immunity
Answer:
Explanation:
Red blood cells contain enormous amounts of a protein called hemoglobin. This iron-containing molecule binds oxygen as oxygen molecules enter blood vessels in the lungs. Hemoglobin is also responsible for the characteristic red color of blood.
Answer:
c
Explanation:
Nitrogen has a number of important uses. It can be used to replace air and eliminate oxidation of materials. Its most important use is in creating ammonia, which in turn is used to make fertilizer and explosives. Liquid nitrogen is used as a refrigerant for very low temperatures
Complementary DNA (cDNA) is a DNA copy of a messenger RNA (mRNA) molecule produced by reverse transcriptase, a DNA polymerase that can use either DNA or RNA as a template.
