Answer:energy
Explanation:all activities of life including physical and chemical require energy to proceed
Answer:
• O A. ACUUGGCGACGU
Explanation:
Anticodons of tRNA have same sequence as of any DNA code they are for. Why? <em>This is because original DNA is transcripted into a mRNA sequence which is complementary to the original DNA sequence. This mRNA is complementary to the original sequence while the anticodons on tRNA are again complementary to the mRNA sequence,</em> which in-turn means that they have exactly same sequence as of original DNA. This is how they interpret the original cod and manifest the expression of correct amino acids as they are present in parents.
Hope that helps!
<span>Spleen is also known as the graveyard of RBC, if it helps u
1.Stem cells in bone marrow make all blood cells. RBC lives about 120 days.
RBC are destroyed in Spleen. This process takes place as:
- RBCs are ruptured.
- Heme and globin portions separated.
- Globin > amino acids.
- Iron transferred in transferrin into the blood > into bone marrow for reuse.
- Heme > Biliverdin > Bilirubin > liver >small intestine.
2.Reticuloendothelial cells participate in the destruction of senescent RBC's. The spleen is a well suited site of RBC destruction given that cells must course through 2-3 micron apertures in the walls of splenic sinusoids, which is an ultimate test of cell pliability. Rigid cells are entrapped and phagocytosed. Intra-erythrocyte inclusions are removed during splenic circulation.
Destruction of RBCs happens within reticuloendothelial cells – NOT in the circulation. Globin and heme get recycled, porphyrin is degraded to bilirubin which is conjugated by the liver and excreted in the gut. Rate limiting step is conjugation. Indirect (unconjugated) bilirubin is result if this doesn’t happen.
Normally ~10% RBCs lyse while in circulation Þ Hgb gets released into circulation and rapidly disassociates into alpha and beta dimers which are bound by haptoglobin. The Hgb/haptoglobin complex is transported to the liver. If haptoglobin is depleted, free Hgb circulates and is filtered by the kidney. Free Hgb is either reabsorbed by renal tubular cells or excreted as free Hgb in the urine.
3. Another site reported that
RBC destroyed in liver and spleen, by macrophages. 2 million destroyed per second.
Hb is released and iron is recovered and returned to bone marrow.</span>
Answer: Sexual reproduction
Explanation: Sexual reproduction, also known as meiosis, involves two organisms. Meiosis results in four haploid cells that are genetically different due to crossing over in prophase l, random fertilization, and the arrangements of chromosomes in metaphase l.
Hey ur answer should be D
I hope this helps besides I waas really good at Biology
