during active, transport, substance move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is active because it requires the use of energy. <em>It</em> <em>is</em><em> </em><em>t</em><em>he</em><em> </em><em>opp</em><em>osite</em><em> </em><em>of</em><em> </em><em>passive</em><em> </em><em>trans</em><em>port</em><em>.</em>
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A croc ↗↗crocadille the might lok the same but are not the same animal taugh they are both reptiles
Answer:
Boiling point is the temperature at which a substance changes from liquid → gas. Scientists determine melting or boiling point by heating a small sample of the substance, keeping careful track of the temperature the entire time. When they see a solid melt, they record the temperature as the melting point.
Answer:
In the first step of meiosis I, the chromosomes/genetic material of the cell condenses into a visible form, into a form called heterochromatin. The nucleolus also disappears.
In the second step, a process called synapsis occurs. This is when homologous chromosomes align themselves, gene by gene.
In the third step, crossing over occurs. Segments of corresponding DNA are cut and exchanged between non-sister chromatids of the formed tetrads.
In the fourth step, the nucleus fragments, the nuclear envelope fragments, the two centrosomes (if we're talking about an animal cell) separate from each other as their asters and mitotic spindles (mostly microtubules (kinetochore and non-kinetochore) lengthen. The microtubules extending from the centrosomes can now connect to chromosomes.
