What condition is caused by carbon dioxide, methane, and water vapor trapping heat in the Earth's atmosphere?

What term is used to describe bacterial cells that can naturally take up dna from their environment?

Maru [420]

<h2>The correct answer is: Competent cells</h2>

Explanation:

Bacterial cells have the capability of incorporating foreign naked DNA or deoxyribonucleic acid fragments from the environment or the exterior of the cell to the interior of the cell. This process is known as Transformation.
The bacterial cells which are able to undergo transformation are called Competent bacterial cells.
Some of the bacterial cells are naturally competent like<em> Bacillus subtilis, Streptocossus pneumoniae</em> while others like <em>Escherishia coli </em>need to be chemically treated to make them artificially competent.
In natural competence, the foreign DNA from the cell exterior is incorporated into the cell interior through specific protein complexes present in the plasma membrane of the bacterial cells.
In artificial competence, the negative charge on foreign DNA is masked by positively charged calcium ions (so that it is not repelled by the negative charge of the lipid bilayer of the bacterial cell plasma membrane) and then small pores are created in the lipid bilayer of the plasma membrane of the bacterial cells by giving a heat shock to the cells. This results in the uptake of the DNA by the bacterial cells.

3 0

2 years ago

A particular species of bacteria has a "a generation time" of 20 minutes. That is, every 20 minutes a single bacterium completes

timofeeve [1]

Answer:

Number of bacteria cells = 2621440 cells

Explanation:

The generation time of a bacteria specie is the time it takes for a population of bacteria to double in number. The generation time for most common bacteria is quite short, about 20 minutes to 1 hour.

Bacteria reproduce asexually by binary fission, in which the parent cell divides into two to produce two identical daughter cells.

In the given question, the generation time of the bacterial species is 20 minutes.

The time that have passed from between the time the sandwich was packed at 6:00 am to lunch time by 12:00 pm is 6 hours.

Using the given formula in the hint: number of cells = 2^(ab) × C

Where a = number of times per hour the bacteria reproduces; b = number of hours; C = number of bacteria at the start

a = 60 minutes/ 20 minutes = 3; b = 6; C = 10

Number of cells = 2^(3 × 6) × 10

Number of cells = 2621440 cells

5 0

3 years ago

Coal is made from the remains of dead plants. It is made of carbon and other elements. Is coal a mineral?

olganol [36]

I believe that would be a no

5 0

3 years ago

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What is the term for any bipedal primate?

Flauer [41]

Answer:

B. Hominid

Explanation:

hominid refers to a family of primate

bipedal refers to using both legs for walking

6 0

3 years ago

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What is the first step in the treatment process for addiction where the addiction is systematically and safely withdrawn?

solniwko [45]

Answer:

Medical Detoxification

Explanation:

Detox or detoxification is the process of safely and systematically withdrawing from a substance such as drugs or alcohol. For many, it’s an important first step in recovery, allowing the body to withdraw from potentially dangerous substances without risking hospitalization.

Many drugs have significant withdrawal symptoms once you quit using them, you tend to experiencing considerable discomfort and pain. Without proper medical attention, these withdrawal symptoms can become dangerous to your health and even become life‐threatening.

Objectives of Detoxification include

1. Evaluation‐the testing of substances in the bloodstream, their concentrations and any co‐occurring mental or physical conditions that may accompany substance abuse as well as other medical and social assessments.

2. Stabilization‐assisting patients through the withdrawal process towards a stable and substance‐ free state.

3. Fostering Entry into Treatment‐preparing clients to enter formal treatment and providing encouragement and support.

8 0

3 years ago