The hemoglobin holoenzyme (active enzyme) is a complex of an iron ion and 4 subunits- 2 hemoglobin alpha and two hemoglobin beta. People with sickle cell disease have mutated beta hemoglobins. The mutation is a single nucleotide exchange, that changes the 6th amino acid of protein primary struture - a Glutamic acid into Valine. This one alteration changes the tree dimentional structure of hemoglobin beta so, that it forms lond fibres that disrupt the normal circular form of the red blood cells.
The right option is; d. consumers
All animals are consumers
Consumers are organisms that usually feed on other organisms or organic matter in order to gain energy because of their inability to manufacture their food from inorganic sources. All animals are consumers and they are also known as heterotrophs. There are different types of consumers. They include; primary consumers (herbivores e.g. goats, cows), secondary consumers (carnivores e.g. wolves, crocodile), and tertiary consumers (large carnivores e.g. eagle, lion)
It is the process<span> of transcribing or making a </span>copy<span> of </span>genetic information stored<span> in a</span>DNA<span> strand into a complementary strand of RNA (messenger RNA or </span>mRNA<span>) with the aid of RNA polymerases. ... The </span>process<span> follows transcription in which the </span>DNA<span>sequence is copied (or transcribed) into an </span>mRNA<span>.</span>
Water is not a very good solvent it not applies to the water.