1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arada [10]
3 years ago
6

Two test tubes are filled with a solution of bromthymol blue. A student exhales through a straw into each tube, and the bromthym

ol blue turns yellow. An aquatic green plant is placed in each tube, and the tubes are corked. One tube is placed in the dark, and the other tube is placed in direct sunlight. The yellow solution in the tube in sunlight turns blue, while the one in the dark remains yellow. Which statement best explains why the solution in the tube placed in sunlight returns to a blue color?
Question 11 options:

Oxygen was produced by photosynthesis.

Oxygen was removed by respiration.

Carbon dioxide was removed by photosynthesis.

Carbon dioxide was produced by respiration.
Biology
1 answer:
amid [387]3 years ago
8 0

Answer:

The correct answer is oxygen was produced by photosynthesis.

Explanation:

During the process of photosynthesis carbon dioxide is consumed and oxygen is released in presence of sunlight.

    when plant is placed in the yellow solution and kept in sunlight the plant undergo photosynthesis.As a result the yellow solution in the tube in presence of sunlight turns blue because oxygen is released by reduction which is responsible for the blue coloration of the solution.

  On the other hand the plant that is placed in dark unable to undergo photosynthesis due to which there is no change in color.

   

You might be interested in
How does the insertion mutation affect the DNA?
gtnhenbr [62]
An insertion mutation occurs when an extra nucleotide is added to the DNA strand during replication. This can happen when the replicating strand "slips," or wrinkles, which allows the extra nucleotide to be incorporated (Figure 2). Strand slippage can also lead to deletion mutations. I’m not sure if this right but I tried
4 0
3 years ago
What evidence is there that the o’higgins glacier is being affected by global warming?
Leno4ka [110]
<span>The distinct evidence of climate change in the O’Higgins glacier is proven by the measurement of the area that it covers. About 11.5 kilometers of glacier land has melted within the twentieth century. Satellite images reveal the retreat of glaciers where they compared early 1900s images from the present.
</span>
8 0
3 years ago
Rna is a part of many cellular processes, particularly those associated with protein synthesis: transcription, rna processing, a
Ksivusya [100]
<span>transcription/RNA processing-
pre-mRNA, mRNA, snRNA

translation- rRNA, tRNA</span>
3 0
3 years ago
Does mitosis or meiosis involve changes within the nucleus
Leona [35]

<u>Answer:</u>

  • Yes, mitosis or meiosis involve changes with in the nucleus.
  • The process of 'nuclear division in eukaryotic cells' happens when two identical daughter cells are produced by the parent cell division.
  • The cell division reduce the half number of chromosomes on parent cell and four gamete cells are produced.

<u>Explanation:</u>

  • The function of mitosis is to repair, grow and asexual reproduction.
  • The meiosis process claim to produce sperm and egg cells for sexual reproduction.
  • Mitosis produces '2n two diploid cells' that is identical to each other and original parent cell.
  • Meiosis produce n four haploid gametes that are 'genetically unique' to each other.
8 0
3 years ago
Which part of a seed acts as the food source for the seed as it grows underground?
liubo4ka [24]
The answer is a cotyledon
5 0
3 years ago
Other questions:
  • Kathleen, age 7, holds the small ball in both hands in front of her before swinging forward, then backward, with one hand and ba
    5·2 answers
  • Enzyme activity within metabolic pathways is regulated by _____.
    8·1 answer
  • Please help!
    12·2 answers
  • Which group was not a target for the kkk
    11·1 answer
  • Where does water that seeps into the ground collect
    11·2 answers
  • 13. What is the procedure to match a spent bullet<br> to the firearm that shot it?
    8·1 answer
  • Plz I need help with this!!
    8·1 answer
  • What would happen if a nucleotide was added at the fourth location in the chain
    12·1 answer
  • Help me, please!!! This is a Bio quiz due tomorrow.
    7·1 answer
  • Biological anthropologists view how humans come to be the way they are as the result of Group of answer choices their biological
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!