Advanced Placement (AP), 05.12.2019 06:31 xandrygentile

Base your answers to questions 69 and 70 on the information below and on your knowledge of biology.
scientists reprogram plants for drought tolerance
source: lancaster farming 2/21/15/aaas
arabidopsis plants respond to drought conditions by producing a stress hormone called aba. this hormone slows down plant growth and leads to a decrease in the plant’s use of water.
aba binds to specific receptors in the plant that cause the guard cells on the leaf surfaces to close the stomatal openings through which water vapor can normally pass. this reduces water loss during the drought conditions.
although it has been suggested that spraying plants with aba during a drought could be beneficial, it is not practical. the chemical is expensive to produce and quickly loses its ability to bind to cell receptors in the plant cells.
recently, however, scientists have found a way to modify the aba receptors in arabidopsis plants so they can be activated by another chemical that is both stable and inexpensive.
69 describe how the shape of molecules, such as the hormone aba, is critical to their function in the arabidopsis plant. [1]
70 explain how the response of the guard cells to a drought is part of a feedback mechanism. [1]

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Answer from: Quest

Hello! ==i would say: spring tides are the highest, while neap tides are the lowest.==hope this ! : )

Answer from: Quest

There really doesn't seem to be anything remotely advanced about this question, especially for high school.that being said, the actual correct answer may depend on the lesson you received.but i'll use common knowledge to you out here. an atlas is a map, a flat map which depicts the world, all the continents and large bodies of water and etc. an almanac is basically a yearly calendar. this depicts all the stuff that happened during the year it was released after, such as important events, sporting stuff, astronomical data, etc. it really depends on what type of almanac you go for.encyclopedias contain vast knowledge about just about everything important around the globe. each encyclopedia is generally focused on a topic and it's relating topics, ordered by each book alphabetically. information resource can be anything. internet, newspaper, talking dog of pure wisdom (joking), the bible (or the religious book for whatever religion is in question), etc. all of these are considered information resources, as they all provide information on their respective topics (the internet is pretty much all topics)now, once again, your true answer will be based on whatever it is you learned, which i would not know. my answer will simply be using common knowledge.but your answers that line up with weather, sports, and business would be an almanac, information resources, and encyclopedia. unfortunately, in today's world, they have books for everything. they have almanacs for weather, sports, and business, and they also have encyclopedia's for those as well. and of course, you can find all of that using information resources as well. the only truly incorrect answer here is atlases. ~hope this !

Answer from: Quest

c: the amount of water released through the dam and the dam's height account for the potential energy.

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Answer from: Quest

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