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
barxatty [35]
2 years ago
13

A bacterium that you isolated from pond water appears to use light for energy. Based upon this information, you inoculate the or

ganism into fresh media, infused with lots of carbon dioxide. Even after incubation at the correct temperature (of pond water), the organism is not growing. Your best explanation of what might have happened is___________.
Biology
1 answer:
Dima020 [189]2 years ago
3 0

Answer:

There was no sulfur compound added to the medium, that could be used as an electron donor.

Explanation:

Bacteria that use light for energy requirements mean that they get their energy from photosynthesis and transferring energy through the molecules.

Bacteria play a major part in the reductive and oxidative cycle of the sulfur which is mediated by the help of photosynthetic bacteria, so the sulfur or sulfur compounds are major requirements for their growth in the habitat or the medium.

Thus, the correct answer would be- There was no sulfur compound added to the medium, that could be used as an electron donor.

You might be interested in
Which of the definitions below best defines a mutation?
victus00 [196]

The correct answer is: A. A change in a cell's genetic material.

Mutations occur in DNA as a result of mistakes during the DNA replication (when repair mechanisms don’t fix it) or as the result of environmental factors (e.g. UV light). Mutations can have positive impact, by increasing the genetic variation or can have negative effect, causing the diseases or cancer.

8 0
3 years ago
When population growth increases in an area, what is happening to the birth rate and age structure of that population?
dangina [55]

Answer:

increasing birth rate with a greater number of young organisms

8 0
3 years ago
What is the importance of guard cells ?
WITCHER [35]

The guard cell is responsible for controlling the size of the stomata in leaves. These do so as a result of an interaction between potassium ions and water in and around the cells. When potassium ions accumulate inside the guard cells the water potential inside these cells is lower than that of the outside and as a result, water has to be taken in. This makes the guard cells turgid which in turn stretches them and results in the opening of the stomata. Meanwhile, when potassium ions accumulate outside the cell, the opposite scenario results. Water from inside the cell moves out, making the guard cells flaccid, thus causing these to cover (and effectively close) the stomata.  

5 0
3 years ago
Which of the following is NOT a skill scientists use to learn about the world?
yawa3891 [41]
D. Scientists use all of the above skills.
5 0
3 years ago
Read 2 more answers
What types of activity might decrease the battery life of a fully charged battery?
Andreas93 [3]
Activity like having brightness all the way on or depending on how much data is used, having Bluetooth on also decreases the battery, having a charger on even when over 100 percent can make charging electronic slower. It's better to have the brightness low.
5 0
3 years ago
Read 2 more answers
Other questions:
  • The discovery of seafloor subduction processes gave evidence to tectonic theory because it explains how the seafloor can be expa
    12·2 answers
  • Question 6: What is the average number of staghorn corals within this time frame?
    6·1 answer
  • What is the most common lipid characterized by a four-ring core structure found in animals?
    10·1 answer
  • Checkpoints are points between phases of the cell cycle at which a cell determines whether all the requirements necessary for ea
    13·1 answer
  • Sandra believes that alien beings on unidentified flying objects (UFO’s) are beaming thoughts into her head. She is suffering fr
    10·2 answers
  • What is an organism's niche?????!?!?!.!?!?!
    15·2 answers
  • Name the organelle in a cell that performs secretion of synthesized proteins and carbohydrates.
    11·1 answer
  • According to modern cell theory, energy flow occurs around
    9·2 answers
  • Tariq watches a hummingbird hover around a petunia flower. He remembers that when two species interact with each other closely,
    12·1 answer
  • What is the relationship between the ability of bacteria to lyse rbc and virulence?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!