What is a chemical bond

2 answers:

4 0

It is a force resulting from the redistribution of energy contained by electrons, which tends to bind atoms together to form different types of molecules

faltersainse [42]3 years ago

3 0

A chemical bond is a type of attraction that joins different atoms and compounds together to form a chemical. A very simple example of this is two hydrogen atoms bonding to one oxygen atom to form water.

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Of the following experimental results, which is the best evidence that photosynthesis is more efficient at certain wavelengths o

GarryVolchara [31]

Answer:

The correct answer will be option-C

Explanation:

The plant absorbs the sunlight to perform photosynthesis which helps produce the sugar molecule used by the plants.

The plants absorb maximum sunlight at two wavelengths that are red and blue wavelength by chlorophyll and other pigments. The efficiency of photosynthesis is also measured maximum at these two active wavelengths called action spectrum.

In the given question, since the efficiency of photosynthesis has been discussed which could be measured with the production of oxygen and consumption of carbon dioxide. The experiment performed by the Engelmann showed that aerobic bacteria got concentrated in the blue and red wavelengths as the output of the photosynthesis were observed maximum.

Thus, the selected option is the correct answer.

5 0

3 years ago

In which organ does the majority of photosynthesis take place

jenyasd209 [6]

The majority of photosynthesis occurs in the chloroplasts.

6 0

3 years ago

Cultures of a bacterial species were incubated on the shelf of a refrigerator (5 C), out on a lab bench top (22 C), on the shelf

Setler79 [48]

D) Psychrotrophs.

Explanation:

Psychrotrophs are those bacteria which can tolerate cold temperature and have optimum growth above 15 degree Celsius.
Halophiles prefer high salt concentration.
Mesophiles prefer temperatures with a average of 37 degree Celsius.
Anaerobes grow in absence of oxygen.
In the given experiment, none of the bacterial cultures were placed in saline or anaerobic conditions. So, the bacterial species is not an anaerobe or halophile.
Again the cultures did not show growth at 37 degree celsius so they are not mesophiles.
Maximum growth at 22 degree celsius and a little growth in refrigerator make it obvious that the species is a Psychrotroph.

8 0

3 years ago

What produces egg and sperm cells during the life cycle of a plant?

Shtirlitz [24]

The haploid male (sperm) and female (egg) sex cells; in plants, formed by mitosis of haploid cells in the gametophyte. ... The multicellular diploid portion of the plant life cycle resulting from the growth, mitosis, and cell division of a zygote. Producessporangium that store haploid spores. Google*

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3 years ago

Read 2 more answers

Kinetic energy is the energy an object has as a result of its .

attashe74 [19]

Because of the energy

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3 years ago