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Alexeev081 [22]
3 years ago
5

Please help with this

Biology
2 answers:
aalyn [17]3 years ago
8 0

47:51 is almost 1:1 so the plant w/ red flower must be Rr n the white one rr.

ans is A.


Talja [164]3 years ago
7 0

The answer is A because the parent plants must be Rr and rr to allow a parent with red flower and also have offspring with white flowers.

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Green disks that create food for plants only
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Answer:

Chloroplasts

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How is water formed during the electron transport chain
olga55 [171]

Answer:

The electron transport chain is the third and final step of cellular respiration. At the end of the electron transport chain, the hydrogen from the coenzymes meets the oxygen which the cell has consumed and reacts with it to form water. Therefore, water is created as a byproduct of the metabolism reaction.

5 0
3 years ago
Which of the following does NOT describe a basic regulator of digestive control?-Short reflexes act locally in the GI tract.-pH,
spayn [35]

Answer:

conscious neural control

Explanation:

Neural control of digestive tract is unconscious achieved via the autonomic nervous system.

Local nervous system of the digestive system is called the enteric or intrinsic nervous system. The major components of this nervous system are two networks or plexuses of neurons:

• The myenteric plexus – controls digestive tract motility

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3 0
3 years ago
Do biological systems contradict the second law of thermodynamics? by taking energy from their surroundings and synthesizing lar
Bogdan [553]
Biological systems do not contradict the second law of thermodynamics. Even in this case, entropy is still always increasing. Biological systems can only decrease their own entropy by using copious amounts of energy and by increasing entropy in their surrounding environment. Also, unfavorable anabolism reactions are always paired with more favorable reactions, such as the use of ATP in order to make the overall Gibb's free energy of the reaction negative.
5 0
3 years ago
A pharmacist has two vitamin-supplement powders. The first powder is 10% vitamin B1 and 30% vitamin B2. The second is 15% vitami
Basile [38]

Answer:

560 mg of powder 1 and 160 mg of powder 2

Explanation:

Let "X" denotes weight of powder 1 added to the new mixture and  "Y" denotes weight of powder 2 added to the new mixture

Total weight of vitamin B1 in the mixture is equal to 80 mg

Total weight of vitamin B2 in the mixture is equal to 200 mg

Equation 1

0.1 X + 0.15 Y= 80

Equation 2

0.3 X + 0.2 Y= 200

Let us simplify the above two equations, we will get

10 X + 15 Y = 8000\\3X + 2Y = 2000

2 (10 X + 15 Y = 8000), 20X + 30 Y = 1600015(3X + 2Y = 2000), 45X +30Y = 30000\\25 X = 14000\\X = 560

Substituting value of X in equation 2 we get

0.3 * 560 + 0.2 Y = 200\\0.2 Y = 200 - 168\\Y = 160

7 0
3 years ago
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