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ra1l [238]
3 years ago
15

What does cotyledon do?

Biology
1 answer:
kogti [31]3 years ago
4 0
A cotyledon is a significant part of the embryo within the seed of a plant. Upon germination, the cotyledon usually becomes the embryonic first leaves of a seedling.
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Medical tests were conducted to learn about drug-resistant tuberculosis. of 142 cases tested in new jersey, 9 were found to be d
KengaRu [80]
Phat1 = 9/142
Phat 2 = 5/268
Phat 3 14/410
Test statistics = (Phat 1 - Phat 2) / (Square root of (phat × (1- phat))
times the square root of (1/n1 + 1/n2))
Test statistics = 2.373
P- value = 2× (1- normal cdf (2.373, 0, 1)) 
= 0.0176
At the level of significance, there is difference between the proportion of drug-resistant wihtin the two states.
3 0
3 years ago
3. What are polymers?
Roman55 [17]
Polymers are many moments strung together. They are linked together by dehydration reactions. (Remove water)
4 0
3 years ago
Byron’s car skidded across the rain-slicked road, into oncoming traffic. He was able to regain control and avoid an accident. As
andre [41]

Answer:

Parasympathetic nervous system

Explanation:

Parasympathetic nervous system (PNS) along with sympathetic nervous system (SNS) makes autonomic nervous system (ANS). ANS controls the functioning of internal processes like digestion rate, heart rate, respiratory rate etc. During a threat or stressful situation SNS is activated. It increases heart rate, respiratory rate and directs blood flow towards peripheral muscles as a part of "fight or flight response". When the situation becomes normal, PNS is activated which restores all the vitals as a part of "rest and digest" mechanism.

Since here Byron almost got into an accident, he was scared a lot due to which his SNS was activated. Eventually when he realized that he is out of danger, his PNS got activated which returned his heart rate and blood pressure to normal levels.

4 0
3 years ago
When allows humans to have different traits from each other
Mrrafil [7]
Well, we are all made differently because we have different DNA.
5 0
3 years ago
Read 2 more answers
To balance the inputs and outputs of cellular respiration, there should be the same number of carbon, oxygen, and hydrogen atoms
lapo4ka [179]

Answer:

True

Explanation:

According to the law of conservation of mass, mass can not be created nor destroyed.

The implication of this is that the total mass on both sides of the reaction equation must be the same.

Thus, the number of atoms of each element on both sides of the reaction arrow must be the same.

6 0
3 years ago
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