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kondor19780726 [428]
3 years ago
6

Is the following sentence true or false ? The temperature of the outer thermosphere is quite high...

Biology
1 answer:
slava [35]3 years ago
5 0
The sentence is true.
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Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
QveST [7]

Answer:

Explanation:

(blank) (S)   (s)

    (S)  (SS) (Ss)

    (s)   (Ss)  (ss)

5 0
3 years ago
Suppose that an arginine residue in the active site of an enzyme was mutated to alanine. As expected, the alanine mutant was ina
kolbaska11 [484]

Answer:

c. A to K

Explanation:

If the alanine mutation is restored to K or lysine residue, most likely the wild type level of activity can be restored. This is because, arginine and lysine have -NH2 as the functional group. So, functional similarity of arginine can be expected from lysine as well.

Hence the correct option is c that is A to K.

7 0
3 years ago
Can you identify which organisms are on which trophic levels in an intertidal community?
Ulleksa [173]

Answer:

The producers-Sea weed-Perform photosynthesis.

The filter feeders- sponges, chiton-eat floating planktons.

Grazers -Snails,mussels feed on- floating planktons.

Carnivores such as sea stars feeds on snails

Explanation:

  • The producers are placed at the bottom level in energy pyramid and are prime factor in the aquatic eco system which provides energy and perform photosynthesis with the help of water,sunlight and chlorophyll.
  • The filter feeders are those that feeds upon small particles that are present in the water.
  • Grazers are those organisms that feeds on producers like phytoplanktons.
  • Carnivores are those organisms that feeds on herbivores.

6 0
3 years ago
Predict the most likely outcome of culturing transformed E. coli in the presence of tetracycline.Justify your prediction.
My name is Ann [436]

Answer:

E.coli is a bacterium which is preffered for transformation due to its rapid growth and high efficiency of introduction of DNA molecules into cells.

Tetracycline is an antibiotic used to treat several infections such as cholera, plague, brucellosis, and malaria etcetra.

Plasmid is a small, extrachromosomal DNA molecule present in cell which is seprated from chromosomal DNA and have ability to replicate independently.

When a plasmid resistant to tetracycline and kanamycine is inserted into E.coli, the process is called transformation. E.coli might not be able to survive due to absence of plasmid but the transformed strains having antibiotic tetracycline and kanamycine will probably be able to survive it.

Hence, the culture of bacteria carrying plasmid will be able to survive only.

4 0
3 years ago
Darwin conducted much of his research on what island
kogti [31]
The Galapagos islands
8 0
3 years ago
Read 2 more answers
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