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
gladu [14]
2 years ago
6

During calcium chloride transformation of bacteria, during which step does plasmid DNA enter the bacterial cells?

Biology
1 answer:
zhannawk [14.2K]2 years ago
4 0
Positively charged calcium ions attract both the negatively charged DNA backbone and the negatively charged groups in the LPS inner core. The plasmid DNA can then pass into the cell upon heat shock, where chilled cells (+4 degrees Celsius) are heated to a higher temperature (+42 degrees Celsius) for a short time.
I hope this helped dear:)
You might be interested in
Describe the ways in which water in sewage polluted lake and water from the sea are
Radda [10]
Sewage holds toxic microbes and contains a mixture of suspended impurities. When these impurities hit drinking water microorganisms begin to deteriorate the water, and uses up the dissolved oxygen with the microorganisms, making these water dangerous to drink from. Major impacts of this can include giardia, salmonella, cryptosporidium, and E. coli.
7 0
3 years ago
In the coniferous forests of Oregon, eight species of woodpeckers coexist. Four species select their nesting sites based on tree
dem82 [27]

Answer:

The correct answer is a. resource partitioning

Explanation:

Resource partitioning is a strategy that species employ to avoid competition. It is based on the selection of different nutrition sources by different organisms that coexist in the same ecological niche, so there is no conflict between them. In the present case, each one of the eight species of woodpeckers feed on different trees, it means that each one select a different tree´s species or, if they select the same species, they use trees of different diameters.

6 0
3 years ago
What would happen if the sand dunes in an area were destroyed?
poizon [28]
There's a shrink to the upward thrust of a sand dune. they do no longer stay interior a similar place yet crawl downwind and are replaced by capacity of latest ones. at last, they attain the factor the place they'd be stabilized by capacity of plant existence. Barrier islands are formed a similar way, different than by capacity of water, somewhat than wind.
3 0
3 years ago
Read 2 more answers
Which phase of mitosis is where two nuclear membranes are formed?
natali 33 [55]
During the prophase the nucleoli in the nucleus disappear. The chromatin fibers become tightly ccoiled and condense into chromosomes. Chromosomes line up in pairs and are joined at the centromere. In the cytoplasm, the spindle fibers begin to formand are made of microtubules.
5 0
3 years ago
Before viruses can reproduce, they must 
Jet001 [13]

Hello There!

Before viruses can reproduce, they must infect a host cell.

Viruses need a way to enter the body before they can infect a host cell.

7 0
3 years ago
Read 2 more answers
Other questions:
  • 1. What part of an environment are a swarm of bees?
    8·2 answers
  • What is the Richter Scale?
    8·2 answers
  • Evidence has been found that shows that primate ancestors developed the ability to see color. Previously, like most mammals, the
    8·2 answers
  • The boundaries of a country is similar to what in a cell?<br> ...
    5·1 answer
  • Jackie Robinson avoided serious<br> trouble as a teenager
    6·1 answer
  • The Big Bang theory believes that everything in the universe was once concentrated into one point. This point exploded, and ever
    11·1 answer
  • Leaves change colors when they lose
    13·1 answer
  • Which of the following is NOT a way to conserve and/or protect natural resources?
    10·1 answer
  • The word clone comes from which Greek word?
    5·1 answer
  • What is the life cycle of a protozoa in stages ?<br> Please help me thank you
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!