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photoshop1234 [79]
3 years ago
15

Which way do the nitrogenous bases in DNA pair up

Biology
1 answer:
slamgirl [31]3 years ago
6 0

Answer: Base pairs occur when nitrogenous bases make hydrogen bonds with each other.

Explanation: Each base has a specific partner: guanine with cytosine, adenine with thymine (in DNA), The hydrogen bonds are weak allowing it to "unzip"

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A client has been diagnosed with gram-negative pneumonia. Knowing this bacteria has a lipopolysaccharide endotoxin on the outer
agasfer [191]

Answer:

The options

A)Damage to cellular mitochondria

B)Increased ATP levels

C)Activation of the p53 protein

D)Apoptosis

The CORRECT ANSWER IS D

D)Apoptosis

Explanation:

The extrinsic pathway of apoptosis includes extracellular signaling proteins which adhere to cell surface molecules known aa death receptors which in turn activates apoptosis.

The aftermath activates endonucleases prompting division of DNA and ultimately cell death.

Apart from the TNF and Fas ligand, primary signaling molecules also promotes the extrinsic pathway, examples of such are the TNF-related apoptosis-inducing ligand (TRAIL); the cytokineinterleukin-1 (IL-1); and lipopolysaccharide (LPS), the endotoxin located in the outer cell membrane of gram-negative bacteria while the activation of the p53 protein, and decreased ATP levels in the intrinsic pathway results in DNA damage.

6 0
3 years ago
An investigator attempting to replicate Pasteur's swan-necked flask experiment has boiled a hay infusion for 1 hour. However, sh
blsea [12.9K]

Answer:

Hay infusion refers to an amalgamation that can be formed by taking samples from different sources like rivers, lakes, ponds, and others. It is one of the best procedures that can elevate the density of the bacteria cell at any specific time interval.  

In the given case, even after boiling hay infusion for one hour, growth was observed in the flask after one day. It can be due to certain factors like the hay infusion may have been comprising some endospore, which is resistant to heat or may comprise some kinds of bacteria that can withstand high temperatures.  

Because of which, even after heating the infusion for one hour, it did not get influenced by the heat and got the chance to grow when it got optimum temperature again at the time when the sample was left as such.

4 0
3 years ago
In which organism is ddt least concentrated?
MrMuchimi

Answer: I would say D)

Explanation:Phytoplankton are the autotrophic components of the plankton community and a key part of oceans, seas and freshwater basin ecosystems. This is the least ddt and is concentrated.

4 0
3 years ago
Explain about forest plantation
KonstantinChe [14]

Answer:

Forest plantations are forest that stands established by planting and/or seeding in the process of afforestation or reforestation.

Explanation:

Hope this helped!

Have a supercalifragilisticexpialidocious day!

4 0
2 years ago
Lập bảng so sánh quá trình phiên mã ở nhân sơ và nhân thực
Digiron [165]

Answer:

Sinh vật nhân sơ chỉ có một RNA Polymerase, trong khi sinh vật nhân chuẩn có ba (RNA Polymerase I, phiên mã rRNA; II, phiên mã mRNA; và III, phiên mã tRNA).

6 0
2 years ago
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