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
goldfiish [28.3K]
3 years ago
14

What color indicates a positive result before the addition of zinc? after?

Biology
1 answer:
Paul [167]3 years ago
8 0
The color red can indicate a positive result
You might be interested in
Members of the kingdom Plantae differ from members of the other kingdoms of Eukarya in that most members of the kingdom Plantae
Nady [450]

Answer:

Explanation: Members of Kingom Plantae are autotrophs, meaning they produce their own food via photosynthesis. They are multicellular organisms. On a cellular level, members of Kingdom Plantae have cell walls ( members of Kingdom Animalia lack cell walls in their cells, but have red blood cells instead)

3 0
3 years ago
Next the researchers repeated the experiment in part c but instead of mixing the ax and ay strains, they put one strain on each
Nadya [2.5K]
The correct answer is none of the above.

Bacterial cells can transfer genetic material through a process called bacterial conjugation. This process involves the direct physical contact of the bacterial cells and a horizontal gene transfer. The genes which are transferred are most of the times beneficial for the recipient, such as genes for antibiotic resistance.

In this example, bacterial cells cannot have physical contact, since they are separated by a glass filter. Therefore, the bacterial conjugation cannot happen. Given that no gene transfer can be achieved, the AY strain remains bio- trp- and is unable to grow on any medium that lacks bio or/and trp. 
5 0
4 years ago
The dumping of garbage caused the population of crabs in an area to drop from 2,000 to 500. Crabs eat algae and are preyed on by
DIA [1.3K]
Algae will be overgrown and larger fish will begin to die out as the carrying capacity has lowered due to a limit in food.
8 0
3 years ago
How are photosynthesis and respiration related to each other?
Pavel [41]
The answer is B.
It describes the relationship between photosynthesis and respiration accurately.
3 0
3 years ago
Define the word nucleus!!<br> Thanks!
aleksklad [387]

Answer:

Hi, there your answer is Carries genetic information and controls what happens inside the cell

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • The vertebrate nervous system can be organized into two main systems: the central nervous system (CNS) and the peripheral nervou
    10·1 answer
  • needs to be correct do not guess i want to say it is invalidate but im not sure and even if it is i dont know why...
    8·1 answer
  • What happens when humans burn fossil fuels
    13·2 answers
  • He device that uses electrodes placed on the outside of the skull to record electrical activity within the brain, and is used in
    11·1 answer
  • When the diet lacks fiber and the volume of residues in the colon is small, the colon narrows and its contractions become more p
    12·1 answer
  • Describe the practice of no-till farming.
    13·2 answers
  • Empty stomachs contract, causing both hunger pangs and the secretion of chemical messages that travel to the brain to serve as a
    12·1 answer
  • Tmi but- my ti-t really hurs
    10·2 answers
  • All you need is on the photo
    15·2 answers
  • Explain how a bird in a tree would be considered commensalism. Provide supporting details in your explanation
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!