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Rzqust [24]
3 years ago
8

What re stomata?how do they help leaves tomae food. love you all

Biology
1 answer:
Svetradugi [14.3K]3 years ago
3 0

Answer:

Stomata allow a plant to take in carbon dioxide, which is needed for photosynthesis. They also help to reduce water loss by closing when conditions are hot or dry. Stomata look like tiny mouths which open and close as they assist in transpiration.

:)

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You are conducting a case control study to determine if an association exists between melanoma and indoor tanning. From a statew
Aleksandr-060686 [28]

Answer:

a. Odds ratio = 1.58

b.  Inasmuch the odds ratio is greater than 1, this means that higher odds of melanoma exist in people exposed to indoor tanning, than in those not exposed to indoor tanning

Explanation:

For case  study                                                  

Let 'a'  represent the total population of people with melanomia = 696                                                      

Let 'b' represent the total number of people with melanomia exposed to indoor tanning  =  1107 – 696 = 411 people

For  control study

Let 'c' represent the total population = 1500

Let 'd' represent the total number of people not exposed to indoor tanning = 1500 - (0.428 * 1500)

                                                          =  1500 - 723

Total number of people not exposed to indoor tanning   = 777 people

                                                       

a. Odds ratio = (a/b) / (d/c) = (696/411) / (777/723)

                                                = 1.69 / 1.07 = 1.58

b. Inasmuch the odds ratio is greater than 1, this means that higher odds of melanoma exist in people exposed to indoor tanning, than in those not exposed to indoor tanning.

7 0
3 years ago
PLS HURRY What type of work uses ATP to pump substances across membranes?
lyudmila [28]
I would say the answer is transport work!

Substances can go through the cell membrane through active and passive transport! Active transport is powered by adenosine triphosphate, ATP!
3 0
3 years ago
What is improper to use to draw-up a liquid into a pipette?
Basile [38]
Sorry I don't know just try to graduate
7 0
4 years ago
In the short-term response to hemorrhage, ________ occurs.
inn [45]

Sympathetic nervous system elevates blood pressure.  Long term, decrease in capillary blood pressure recalls fluids from interstitial spaces. Aldosterone and ADH promote fluid retention. Increased thirst promotes water absorption across the digestive tract. Short term, Carotid and aortic reflexes move up cardiac output and peripheral vasoconstriction.

4 0
3 years ago
Two true-breeding pea plants are crossed. One parent is round, terminal, violet, constricted, while the other expresses the cont
Alexandra [31]

The question is incomplete as it lacks te end part of the question. However, the missing part is as follows:

In the F2 generation, all possible combinations of these traits were expressed in ratios consistent with Mendelian inheritance. Identify the four dominant traits, and enter them in ALPHABETICAL order in the blanks provided. [x],[y],[z],[a].

Answer:

The correct answer is :

x)axial

y)full

z)round

a)violet

Explanation:

True breeding organisms are organisms that carry two same alleles of a particular trait or character either dominant or recessive. In this given case the two breeding plants have four distinct traits, round, terminal, violet, constricted in one parent and wrinkled, axial, white, full in other.

In f1 there would be only dominant alleles for these characters will be expressed, that is already given in the question-

round, axial, violet, and full

The alphabetical arrangement of the dominant alleles are-

x)axial

y)full

z)round

a)violet

3 0
3 years ago
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