Answer:
A. True
Explanation:
Hemoglobin is a protein and has two distinct types of polypeptide chains. These are called the alpha and beta subunits. The gene that code for the beta chain undergoes a mutation in a single base that causes sickle cell anemia. Here, adenine base in the genetic code for glutamic acid is substituted with a thymine base.
The genetic code for glutamic acid in the beta chain gene is GAG. The "A" is replaced with "T" and the new code "GTG" codes for valine. Therefore, the mutated hemoglobin has valine in place of glutamic acid. This makes these mutated protein molecules to form aggregates resulting in a change in the shape of RBCs carrying them.
Answer:
The bottom one shows how the circulatory system of a fish functions.
Answer:
The answer would be Hydrophobic tail and a hydrophilic head. Just some background info, this is located in the cell membrane and the cell membrane is made of up something called the Lipid Bilayer. The word "bi" means 2, so it comprise of 2 layers of phospholipids. These 2 layers of phospholipids are called hyrodrohpbic and hydrophilic. The word "phobic" means fear, so they hydrophobic molecules are NOT attracted to water. Hydrophilic molecules, however, ARE attracted to the molecules.
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C. fathoming
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Answer:
Is interpreted by the brain.
Explanation:
Sensation is the ability to feel things physically. It can be defined as the process in which the brain collects information through the five sense organs( eyes, nose, skin, tongue, ears) after which the information is interpreted by the brain.
Sensory neurons are responsible for the detection of a stimulus. Neurons helps to transport the message about the stimulus to the brain or spinal cord, which then interprets the information and decides on the specific type of action to carry out.
