What is the source of energy in the water cycle?
for online classes: sun
Your lab group is experimenting with the diffusion of molecules across a membrane. Dialysis tubing is used as a model cell membrane, because is it semi-permeable, allowing small molecules to cross the membrane, but NOT larger molecules, like starch. A starch solution is placed in the dialysis tubing and then the dialysis tubing is placed in an iodine and water solution. Iodine is used as an indicator for the presence of starch. Normally, iodine is a yellow-brown color, but in the presence of starch, it turns a deep purple. After observing the experimental setup for 20 minutes, the iodine solution remains brown, but the starch solution inside the dialysis tubing is purple and swollen. Based on what you learned from the lab, starch is MOST likely to cross the cell membrane at which of the points indicated on the diagram? A) Starch crosses the cell membrane at A. B) Starch crosses the cell membrane at B. C) Starch crosses the cell membrane at D. D) Starch crosses the cell membrane at E.
Starch crosses the cell membrane at E.
i did the USATestprep
C) Starch requires ATP energy for transport and therefore cannot cross the dialysis tubing into the iodine solution.
I did the USAtestprep
example of a decomposer and explain what would happen if decomposers were absent from a forest ecosystem
Which occurrences do the greenhouse effect contribute to
higher ocean levels
strange wether patterns
i took the quiz sry i late.
Most climate scientists agree the main cause of the current global warming trend is human expansion of the "greenhouse effect" — warming that results when the atmosphere traps heat radiating from Earth toward space. Certain gases in the atmosphere block heat from escaping. HOPE THAT HELPS
Ni nini chanzo cha nishati katika mzunguko wa maji? Kwa mfano, katika darasa la kwanza, kikundi cha maabara kinafanya majaribio ya kuenea kwa molekuli kwenye utando. Mifereji ya dialysis hutumiwa kama membrane ya seli ya mfano, kwa sababu ni nusu-permeable, kuruhusu molekuli ndogo kuvuka membrane, lakini si molekuli kubwa, kama starch. Suluhisho la wanga huwekwa katika bomba la dialysis na kisha bomba la dialysis huwekwa katika suluhisho la iodini na maji. Iodini hutumiwa kama kiashiria cha kuwapo kwa wanga. Kwa kawaida, iodini huwa na rangi ya manjano-kahawia, lakini inapowepo na wanga, inakuwa na rangi ya zambarau. Baada ya kuchunguza muundo wa majaribio kwa dakika 20, suluhisho la iodini linabaki kuwa la rangi ya kahawia, lakini suluhisho la wanga ndani ya bomba la dialysis ni la zambarau na limevimba. Kulingana na kile ulichojifunza kutoka kwa maabara, ni uwezekano mkubwa wa wanga kuvuka utando wa seli katika sehemu gani iliyoonyeshwa kwenye mchoro? A) Starch kuvuka utando wa seli katika A. B) Starch hupita utando wa seli katika B. Starch hupita kwenye utando wa seli katika E. Starch hupita kwenye utando wa seli katika E. Starch hupita kwenye utando wa seli katika E. Starch inahitaji nishati ya ATP kwa usafirishaji na kwa hivyo haiwezi kuvuka bomba la dialysis katika suluhisho la iodini. "Kama mfano wa ""USTEP"" (Utafiti wa USA) wa mvunjaji, nilielezea nini kitatokea ikiwa mvunjaji haupo katika mazingira ya msitu, ni matukio gani ya athari ya chafu huchangia viwango vya bahari vya juu, mifumo ya hali ya hewa ya ajabu, na mimi nilichukua mtihani huo kwa kuchelewa." Wanasayansi wengi wa hali ya hewa wanakubali sababu kuu ya mwenendo wa sasa wa ongezeko la joto duniani ni upanuzi wa binadamu wa "athari ya chafu" - joto linalotokana na hali ya hewa kukamata joto linalotokana na Dunia kuelekea angani. Gesi fulani katika angahewa huzuia joto lisitoke. Tumaini Linaloweza Kusaidia