Microscopic organisms live at such extremes that, taking them into consideration, the thickness<span> of the </span>biosphere<span> is much greater. Culturable microbes have been found in the Earth's upper atmosphere as high as 41 km (25 mi).</span>
The amount of alleles that a baby Guinea pig inherit from the mother are two , 1 from its mother and 1 from its father ( The very reason why we use them as an experiment tester is because this similarities)
For Example, if its mother hat a dominant black fur (BB) and its father has recessive grey fur (bb) , there is 100% chance that the baby will has a Bb genotype, which will give them either black fur or dark grey fur.
1. DNA 2. asexual reproduction 3. sexual reproduction 4. metabolism 5. stimuli 6. homeostasis 7. Evolve
<h2>The given statement is true</h2>
Explanation:
Iron absorption occurs in the duodenum and upper jejunum of small intestine
- At physiological pH ferrous iron is rapidly oxidized to the insoluble ferric form
- Gastric acid lowers the pH in the duodenum which enhances the solubility and uptake of ferric iron
- Once iron gets inside the enterocyte it can be stored as ferritin;Ferritin is a hollow spherical protein which helps in storage and regulation of iron levels within the body
- Ferritin molecule have ferroxidase activity which helps in the mobility of Fe2+ out of the enterocyte by ferroportin
- Transferrin is the major iron transport protein which transports iron through blood
- Fe3+ binds to transferrin so Fe2+ transported through ferroportin must be oxidized to Fe3+
- Fe2+ needs to be oxidized first so that it can be transported through ferroportin
- Once iron gets inside the cell it can be used for various cellular processes