The Hemoglobin subunits use a histidine amino acid to hold on to the heme group needed to chelate oxygen.  You discover a new mutation in the Alpha-globin gene that causes it to code for a glycine instead of a histidine.  These amino acids are very chemically different

Using the operation mechanism of GLUT1 and its types of transport proteins, explained how glucose is transported into the cells. Explained how glucose is transported into the cell by utilizing the operation mechanism of GLUT1 and its various transport proteins.

You are working in a lab and discover an animal with a mutation that does not allow it to develop brown fat. If this animal were in the wild, what would be the most severe problem it might face? a   The animal would die from overheating due to increased production of thermogenin b   The animal would produce too little ATP to sustain daily activity c   The animal would be very thin and underweight d   The animal would be unable to reproduce, because of insufficient lipids to make sex hormones e   The animal would be less effective at producing heat to raise its body temperature

The hemoglobin in the fetus (HbF) is a structural variant of the hemoglobin in the mother (HbA). HbA is a tetrameric protein complex consisting of two α-globin and two β-globin subunits. HbF is made up of two αglobin and two γ-globin subunits, where the γ-globins are similar to the β-globins but γglobins have lower affinity for 2,3- bisphosphoglycerate or BPG. Studies of oxygen transport in pregnant mammals show that the oxygen-saturation curves between the red blood cells of the fetus and the mother are markedly different. 1. The shape of hemoglobin binding curves is: hyperbolic or sigmoidal 2. a) Based on the binding curves, determine the dissociation constant (Kd) for each hemoglobin complex. (Show correct units.) Kd of HbF + BPG: ________________ Kd of HbA + BPG: _____________________ b) Which has a higher affinity for oxygen? HbF+BPG HbA+BPG 3. a) How many BPG molecule(s) is/are expected to bind one hemoglobin complex? 1 2 3 4 b) BPG binding preferentially stabilizes which state…

Consider a gene in the mitochondrial genome that codes for a channel protein in the inner membrane that allows magnesium ions to travel freely across. If a mutation in that gene resulted in this protein allowing H+ to pass through it rather than magnesium, what would be the consequence for cellular respiration?

What is the function of the structure indicated by the arrow? CHD Answers A -E A ATP production B Glycosylation of proteins C Production of MRNA Production of ribosomal RNA Translation of MRNA into proteins

1) Which of the following contains all of the information required to target a precursor protein from the cytosol to the mitochondrial matrix? a. N-terminal uptake-targeting sequence b. C-terminal uptake-targeting sequence c. post-translational organelle d. translocon e. None of the above 2) In the absence of targeting information, what is the default location of proteins synthesized on cytosolic ribosomes? a. Golgi apparatus b. ER lumun c. Cytosol d. Cell plasma membrane e. ER membrane

In order to improve their recovery after an intense work out or competition, many high-level athletes use "cool downs" to rapidly slow down their movements, by eating a snack, and breathing deeply. What choice below accurately explains how these steps aid cellular respiration? A. Eating a snack takes in more energy which converts to sugar needed by the body to produce oxygen to begin cellular respiration. B. Cooling down in this way they are able to take in oxygen and sugar, which allows their cells to produce energy through cellular respiration. C. Breathing deeply and eating a snack releases more carbon dioxide and sugar, which leads to more energy for cellular respiration to begin. D. Cooling down in this way they are able to take in carbon dioxide and water which allows their cells to produce energy through cellular respiration. 5.

Mutations in the ribosomal protein gene RPS19 have been found to be associated with Diamond-Blackfan anemia (DBA), a rare syndrome that disrupts erythropoiesis, the process by which new red blood cells are produced. Which of the following provides the most likely explanation for the connection between a mutation in RPS19 and a disruption in erythropoiesis? A B с D The ribosomes in the cell are unable to package and transfer the components that are required for erythropoiesis. The ribosomes in the cell are unable to facilitate the movement of nutrients that are re- quired for erythropoiesis across the cell membrane. The ribosomes in the cell are unable to correctly synthesize the proteins that are re- sponsible for erythropoiesis. The ribosomes in the cell are unable to effectively produce the ATP that is required for erythropoiesis.

(please type answer no write by hend)