Answer:
D. They release waste into the bloodstream.
Explanation:
Kidneys are the primary organs of the excretory system. Their primary function is to remove the metabolic waste from the blood and release it out of the body in the form of urine. The nitrogenous waste, drugs, uric acid, and other metabolic waste products are removed from blood in kidneys.
Hence, kidneys do not release the waste into the bloodstream, rather release them out of the body and filter the blood.
Following fertilization, the single-celled zygote undergoes cleavage, where it is then divided into numerous tiny cells. After 3 to 4 days of fertilization, the cleavage produces a 16 celled embryonic stage known as morula, which is contained within the zona pellucida.
After about 4-5 days of fertilization, cleavage produces a sphere mass of cells known as blastomeres, which is covered by a layer known as trophoblast and has a fluid-filled cavity in the center, known as blastocoel. The blastomeres then migrate inward, changing position and undergoing rearrangements. This is known as gastrulation.
Gastrulation then causes the development of three germ layers: ectoderma, endoderma, and mesoderma. The interaction of cells and the rearrangement of tissues and organs occurs only after the formation of germ layers.
Answer:
B
Explanation:
Mutualism describes the ecological interaction between two or more species where each species has a net benefit. Mutualism is thought to be the most common type of ecological interaction, and it is often dominant in most communities worldwide.
<span>Peptidoglycan is composed of alternating N-acetylmuramic acid and </span>N-acetylglucosamine, short amino acid chains, and some lipid proteins. Both amino sugars are bonded by beta-glycosidic bonds.<span> The amino acid sequence in the crosslinking of the lattice also differs between bacteria species. </span>
Answer:
the top 2 from left to right are: petal and stigma(*).
The one that follows from top to bottom is anther(#) and the one below is the filament.(#)
to the right there is the style(*) and below there is the ovary(*)
to the left of that, the last one with no symbol is the sepal
the last 2 sentences in the bottom are pistil and stamen
