Answer;
-Dyneins; kinesins
Organelles are moved within the cytoplasm by being pulled along microtubules by the motor proteins dyneins and kinesins.
Explanation;
-Microtubules are responsible for a variety of cell movements, including the intracellular transport and positioning of membrane vesicles and organelles, the separation of chromosomes at mitosis, and the beating of cilia and flagella.
-One of the major roles of microtubules is to transport membrane vesicles and organelles through the cytoplasm of eukaryotic cells. dyneins are motor proteins that move towards the minus end of the microtubule. Thus, they transport cargo from the periphery of the cell towards the center.
-Active movement of kinesins along microtubules supports several cellular functions including mitosis, meiosis and transport of cellular cargo, such as in axonal transport.
Most important is that it can secrete proteins<span>. </span>Protein<span> is </span>made<span> by rough ER, chemically modified and </span>packaged<span> in the membrane and then vesicles move into the plasma membrane, fuse with it, and then release the contents</span>inside<span>.</span><span>,and budded of from the Golgi, or </span>made<span> by the ER.</span>
Answer:
Trees put off some of this carbon dioxide from the air thru photosynthesis and keep that carbon in their tissues and in the soil. Deforestation reduces the removal factor of this cycle, in addition growing the carbon dioxide in the air. This effects in an expand in temperature, an impact known as world warming.
Explanation:
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Answer:
<u>Luteinizing hormone </u>(LH) stimulates Leydig cells to secrete testosterone
<u>Follicle stimulating hormone (FSH)</u> stimulates Sertoli cells to secrete protein and other molecules required for spermatogenesis
Explanation:
Under the influence of gonadotropin-releasing hormone, the anterior pituitary releases luteinizing hormone (LH) and follicle-stimulating hormone (FSH). In males, LH stimulates interstitial cells of testes (Leydig cell) to secrete the hormone testosterone. FSH acts indirectly to stimulate spermatogenesis by causing the release of androgen-binding protein (ABP) from the Sertoli cells. The function of ABP is to maintain the higher concentrations of testosterone to stimulate the final steps of spermatogenesis in the seminiferous tubules.
Answer:
<em>The correct option is B) Her title is accurate because one extreme is favored.</em>
Explanation:
In ecological studies, directional selection can be described as a selection due to which an extreme phenotype is favoured by natural selection and evolution causes the change in allele frequencies in favour of the extreme phenotype.
In the condition described in the question, the phenotype for eating insects was the extreme phenotype which was favoured by natural selection. The allele frequency for this extreme phenotype became abundant due to evolution. Hence, option B is correct.
