no. all organisms do not share rthe same genetic code
Loss of Rb, an important part of the G1-S transition checkpoint, can result in uncontrolled cell cycle progression and cancer. All of the following would mimic loss of Rb except constitutively active Ras GTPase activating protein. Correct answer: letter E.
Constitutively active Ras GTPase activating protein would not mimic loss of Rb, because it would not directly result in uncontrolled cell cycle progression.
<h3>What is Retinoblastoma (RB)?</h3>
Rb is an important tumor suppressor protein that works to inhibit cell cycle progression by preventing the activation of E2F transcription factors. Constitutively active Ras GTPase activating protein would not directly interfere with the Rb-E2F pathway, which is necessary for uncontrolled cell cycle progression and cancer.
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Answer:
Liver
Explanation:
Organisms that cannot easily and safely remove nitrogen as ammonia convert it to a less toxic substance, such as urea, via the urea cycle, which occurs mainly in the liver. Urea produced by the liver is then released into the bloodstream, where it travels to the kidneys and is ultimately excreted in urine.
Answer:
Components of blood- Blood plasma and Formed elements which areblood cells and blood fragments.
Plasma helps in transportation, erythrocytes transport oxygen, leukocytes provides defese against diseases and platelets functions in blood clotting.
Explanation:
Blood has two components:
- Blood plasma, a liquid extracellular matrix.
- Formed elements which are blood cells and cell fragments.
Functions of Blood plasma:
- Water present in the plasma maintains the blood volume and transports molecules.
- Plasma proteins maintain osmotic pressure and pH.
- Globulins fight against infection.
- Fibrinogen aids in clotting.
- plasma also transport, nutrients, hormones and vitamins etc.
Functions of blood cells:
Red blood cells or erythrocytes contain hemoglobin that binds oxygen and transports the oxygen to different parts of the body.
White blood cells or leukocytes provide defence againts diseases by engulfing the cells or releasing antibodies.
Platelets are fragments of megakaryocytes. Platelets help to stop blood loss from damaged blood vessels by forming platelets plug.