Answer:
What best describes how transferrin is transported through the erythrocyte plasma membrane is receptor-mediated endocytosis.
Explanation:
The incorporation of transferrin across the erythrocyte membrane depends on a transferrin receptor expressed on the surface of the membrane. The specific receptor recognizes the presence of iron-charged transferrin, transferin diferrica, incorporating it into the cell by endocytosis. Once in the cytoplasm, the iron is dissociated from the transferrin.
Free transferrin is called apotransferrin. The transferrin receptor has a high affinity for transferrin di-ferrica, which facilitates its incorporation by endocytosis, and the release of apotransferrin into the extracellular space.
The other options are not correct because:
<em> A. </em><u><em>Exocytosis</em></u><em> implies the exit of substances from the cell.</em>
<em> B. </em><u><em>Pinocytosis</em></u><em> involves the invagination of the membrane to incorporate soluble substances into the cell.</em>
<em> C. </em><u><em>Phagocytosis</em></u><em> is the incorporation of solid substances by invagination of the membrane.</em>
Salinity refers to the principal characteristic that determines whether an aquatic ecosystem is classified as marine or freshwater. It is the measure of all the salts dissolved in water.
Answer:
A pair of homologous chromosomes fails to separate during anaphase I of meiosis.
c) makes them immune to all diseases
This is the choice you are looking for because is ISN'T a way that adaptation helps the organism survive life. If it is immune to all diseases, that organism would probably die because of all the diseases that it is immune to.
The other choices have adaptations that will help the organism survive.
Hope I helped.
Answer:
mixotrophs
Explanation:
Myxotrophism or myxotrophy, in biology, is the name given to the quality of the living being with autotrophic and heterotrophic characteristics. That is, it is capable of producing its own food from carbon dioxide fixation (through photosynthesis or chemosynthesis), but it can also feed on other inorganic or organic compounds. Mixotrophic can be either eukaryotic or prokaryotic.
Carnivorous plants are commonly cited as myxotrophic organisms in the wrong way because all their food comes from photosynthesis. These plants only depend in part on the nitrogen contained in animal proteins that they digest. This dependence occurs because the carnivorous plant is native to areas with poor, soggy soil, scarce of nitrates, essential for the synthesis of the chlorophyll molecule.
