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Angelina_Jolie [31]
3 years ago
5

How do plants detect and regulate their responses to light?

Biology
1 answer:
Ymorist [56]3 years ago
8 0
Receptors detect changes in the environment. For a stimulus to elicit a response, certain cells must have an appropriate receptor. Stimulation of the receptor initiates a specific signal pathway.
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The graph below represents the solar intensity measured over one day in northern Canada. What is the most likely date?
Dmitry [639]
It is important to note that the graph has 0 solar intensity for a long part of the day; around 16 hours. Only from 8 to 16 hours do we have significant sunlight.
This means that the length of day is very short during this time of the year;

The length of the day changes throughout they year; day is equal to night (12 hours each) during the solstices on March 21 and September 23 but during summer day is longer than night in the northern hemisphere; during winter it is smaller. THe smallest daylength is at December 21st (in the northern Hemisphere). This phenomenon is due to the tilt of the axis of the earth.

The correct answer is December 21; (if we talked about a place in the southern hemisphere, the answer would be March 21).
6 0
3 years ago
Fungi cannot make their own food through photosynthesis. How do they take in nutrients ? A.Absorbing sunlight B.producing spores
erma4kov [3.2K]

Answer:

Fungi take in nutrients by C. absorbing nutrients. They suck up nutrients from decomposing matter.

6 0
3 years ago
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What is the point transcription
kolbaska11 [484]
<span>Transcription is the first step of gene expression, in which a particular segment of DNA is copied into RNA (especially mRNA) by the enzyme RNA polymerase. Both DNA and RNA are nucleic acids, which use base pairs of nucleotides as a complementary language.

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4 0
3 years ago
Which of the following are abiotic factors that shape ecosystems? <br> Group of answer choices
cestrela7 [59]
Temperature, light and water
8 0
3 years ago
1) How is DNA compacted to form a chromosome?
denis-greek [22]

Answer: Answer is below in the explanation.

Explanation:

As shown in the animation from my school, a DNA molecule wraps around histone proteins to form tight loops called nucleosomes. These nucleosomes coil and stack together to form fibers called chromatin. Chromatin, in turn, loops and folds with the help of additional proteins to form chromosomes.

(Link my school used https://www.biointeractive.org/classroom-resources/how-dna-packaged )

6 0
3 years ago
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