Can someone please, help me? for the first one, I check marked what I think shou
ID: 66782 • Letter: C
Question
Can someone please, help me? for the first one, I check marked what I think should be the answer. The second one, I dont even know where to start, and the third question, I missed like 4 times. I followed step by step as described in textbook, and still missed it.
Hemoglobin is an oxygen-transport protein found in the red blood cells of all vertebrates. In mice hemoglobin is a complex of four subunits, 2 -globin chains and 2 globin chains, with each subunit containing a heme molecule. The mouse globin gene is approximately 1,500 nucleotides long, however, the cytoplasmic globin mRNA is only about 750 nucleotides long. Select the best explanations for the difference in length The&globin; mRNA is processed after being transcribed The B-globin gene is interrupted by one or more introns The beginning of the -globin gene is not transcribed The Bglobin gene encodes both of the gglobin subunits The &globin; mRNA underwent splicing in the cytoplasm In the 1970s, scientists conducted experiments to determine the reason for the difference in length between the mouse globin gene and the mature cytoplasmic globin mRNA. In one type of experiment, Aglobin DNA was incubated with cytoplasmic globin mRNA and the complexes formed were analyzed by electron microscopy. The microscope images had structures that were interpreted to be DNA/DNA duplexes DNA/RNA duplexes, or unannealed strands. Choose the statement that correctly describes the typical finding from this type of experiment. You do not need to know the details of the experiment to answer this question. Use your knowledge of eukaryotic genes to identify the most logical answer. O Two annealed sections of DNA/RNA duplex, with a loop of unannealed mRNA between them One uninterrupted annealed section of DNA/RNA duplex Two annealed sections of DNA/RNA duplex, with a loop of unannealed DNA between them O No annealed sections present.Explanation / Answer
Solution:
The HBB gene provides instructions for making a protein called beta-globin. Beta-globin is a component (subunit) of a larger protein called hemoglobin, which is located inside red blood cells. In adults, hemoglobin normally consists of four protein subunits: two subunits of beta-globin and two subunits of another protein called alpha-globin, which is produced from another gene called HBA. Each of these protein subunits is attached (bound) to an iron-containing molecule called heme; each heme contains an iron molecule in its center that can bind to one oxygen molecule. Hemoglobin within red blood cells binds to oxygen molecules in the lungs. These cells then travel through the bloodstream and deliver oxygen to tissues throughout the body.
a) Codon: 5’- CGC – 3’
Codon: 5’- UGC – 3’
b) Codon: 5’- UUA – 3’
c) Codon: 5’- AUC – 3’
Codon: 5’- CUC – 3’
Codon: 5’- UUU– 3’
In initiation process tRNA enters the ribosome in translation process