The strongest component of the cell wall<span> is a carbohydrate called cellulose, a polymer of glucose. The </span>cell wall gives rigidity<span> and strength to the </span>plant cells<span> which offers protection against mechanical stress. ... The </span>rigidity<span> of primary </span>plant<span> tissues is due to turgor pressure and not from rigid </span>cell walls<span>.</span>
Wind produces the energy, initial motion and direction of the surface current of the ocean.A<span>n </span>ocean current<span> is a seasonal directed movement of seawater.
</span>Surface ocean<span> currents are primarily </span>affected<span> by </span>wind. The Gulf Stream is example of it. <span>Trade </span>winds<span> push </span>water<span> along the top of the </span>ocean<span> and this results in formation of surface currents.</span>
Answer:
No, a person's genotype cannot be determined solely by their phenotype as many genes in our genome do not get expressed.
Explanation:
Helper T cells <span>are required for almost all </span>adaptive immune responses<span>. They not only help activate B </span>cells to<span> secrete antibodies and macrophages </span>to<span> destroy ingested microbes, but they also help activate cytotoxic </span>T cells to<span> kill infected target </span>cells<span>.</span>
Answer:
Nitrogen is an essential nutrient for plants and a significant component of proteins, which all animals need to grow, reproduce and survive. The nitrogen cycle converts nitrogen into compounds that plants and animals can use. Humans and Animals Need Nitrogen All human tissue – muscles, skin, hair, nails and blood – contains protein.
