Surely, as male signals can act as signs of a guy's quality, they may also serve as a male's harm. as a fact that a male can find to female in a special ways. It didn't pick a widowbird if a female reject a male.
Any of numerous species of birds as in family Viduidae, including whydahs and widow finches, are referred to as widow birds (plural: widow birds).
The belief that everything has innate goodness, strength, and wisdom is prevalent in Native American culture. An powerful symbol that denotes honor and a bond between the bearer, the Creator, or the bird from whom the feather originated is the feather.
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Answer:
Facilitated diffusion
Explanation:
Oxidative phosphorylation, involving the Electron transport chain and Chemiosmosis is the third stage of cellular respiration. The main purpose of the ETC is to build an electrochemical (electrical and concentration) gradient across the inner mitochondrial membrane. It does this by using energy to pump protons (H+ ions) from the matrix to the inter-membrane space of the mitochondria.
Facilitated diffusion, also known as passive transport through channels, is a form of facilitated transport involving a passive movement of molecules along their concentration gradient, through channels called membrane proteins.
During Chemiosmosis of Oxidative phosphorylation, protons (H+) flow back down their concentration gradient (from inter-membrane space to matrix) due to the chemiosmotic gradient that has been formed in ETC. However, hydrogen ions (H+) cannot pass through the inner mitochondrial membrane except through an enzyme (protein) found in the inner mitochondrial membrane called ATP synthase. This protein acts as a machine powered by the force of the H+ diffusing through it, down an electrochemical gradient. This movement of H+ via ATP synthase further catalyzes the conversion of ADP to ATP.
It is an example of facilitated diffusion because H+ ions are diffusing across the inner mitochondrial membrane (from inter-membrane space to matrix) via a protein channel or membrane protein called ATP synthase.
The movement of H+ through the ATP synthase is best described as an example of chemiosmosis, which involves the movement of ions across a membrane through a specialized protein channel to generate ATP.
The movement of H+ through the ATP synthase is best described as an example of chemiosmosis. Chemiosmosis is the movement of ions across a membrane down their electrochemical gradient through a specialized protein channel like the ATP synthase. This process generates ATP, the energy currency of the cell.
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Cytokinesis is the final stage of cell division where the cytoplasm is divided to form two separate daughter cells. This follows after the completion of interphase and the four stages of mitosis. This stage ensures all genetic material, organelles, and cytoplasm are evenly divided.
The final stage of cell division where the cytoplasm is divided among the two new daughter cells is called cytokinesis. In the process of cell division, a cell first undergoes interphase, prepares for cell division and moves through four stages of mitosis (prophase, metaphase, anaphase, and telophase). Following this, the cell proceeds to the final stage of mitosis - telophase, where two new daughter nuclei are formed at either end of the cell.
These new nuclei surround the genetic material, which then uncoils, allowing the chromosomes to return to loosely packed chromatin. Once nuclei are formed, the cell begins to split in half, a process known as cytokinesis. This is where the cytoplasm, the internal material between the cell membrane and nucleus, is divided to form two separate daughter cells. This process also ensures that all other organelles and cellular solutes are evenly distributed between the two daughter cells.
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b. male and female fish release their gametes together.
c. male fertilizes the females eggs.
d. a group of eggs develops into larvae.
Natural selection has been the process that allows organisms to adapt to changes. Heritable variations for some traits are required for natural selection. Thus, option A is correct.
Natural selection has been defined as the process of survival and reproduction that are evident in evolution and are characteristic of a population or generation of the species.
For natural selection to occur variations, existence and inheritance are the major requirements that are crucial for the organism to show the adaptation and evolutionary process.
Traits inherited from the previous generation must show some variation so as to make the current generation more beneficial and selectable over the ancestral generation.
Therefore, option A. the heritable variations of some traits are an important factor for natural selection.
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Your question is incomplete, but most probably your options were,
Answer:
1. heritable variations for some traits
Explanation:
Assuming the options are:
there are four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.