Which of the following is the best way to get all of the air out of a bottle?

Identifying earths four spheres match each of earths spheres

BartSMP [9]

Answer:

cryosphere → glaciers, ice caps, ice bergs

atmosphere → air surrounding earth

biosphere → all of Earth's living things

geosphere → Earth's interior, rocks, minerals, and landforms

hydrosphere → oceans, lakes, rivers, streams, and groundwater

Explanation:

The above are properly matched.

Cryosphere is known as part of the earth were water is in solid form. This has to do with glaciers, ice, ice bergs, etc.

Atmosphere has to do with the part of the earth that is gaseous. This has to do with the air found on earth.

Biosphere is the living part of the earth. All things are found in the biosphere.

Geosphere is known to be earth itself which is made up of the landforms, rocks, minerals, earth's interior, etc.

Hydrosphere has to do with the liquid part of the earth. It has to do with the water bodies.

6 0

3 years ago

Which of the following statements regarding restriction enzymes is NOT true?

Anni [7]

Answer:

The correct option is option A

Explanation:

Restriction enzymes are endocleases that cleave DNA fragment (of usually four, five or six nucleotide long) at specific sites to produce blunt or sticky ends. They recognize palindromic sequences of host DNA when cleaving the specific sites. The sequences below (on complementary strands) give an example of a palindromic sequences.

5'-CCC║GGG-3'

3'-GGG║CCC-5'

As can be seen above, when read from 5' to 3', the two sequences are the same despite being on opposing strands. And when cut between the guanine (G) and cytosine (C) (as shown above), it produces a blunt end. But when cut as shown below produces a sticky end.

5'- G║AATTC -3'

3'- CTTAA║G -5'

The explanation above shows options C and D are right while option A is wrong (hence the correct option).

Also, bacteria prevent their own DNA from been digested by restriction enzymes by adding methyl group to their restriction sites which prevents restriction enzymes from recognizing restriction sites of their DNA; this generally makes bacterial DNA to be highly methylated. This explanation makes option B right also.

6 0

3 years ago

Which two classification levels do we use in binomial nomenclature?

Vika [28.1K]

Answer:

descriptors or epithets

4 0

3 years ago

Describe the view if you were to stand in the penumbra of a solar eclipse.

nignag [31]

During a solar eclipse, when the Moon's shadow falls on the Earth, we stand in the shadow rather than looking at it. Observers standing in the umbra see a total eclipse of the Sun, while observers under the penumbra see a partial eclipse.

4 0

3 years ago

William wanted to create a report on a geographical location with the greatest species diversity. Which ecosystem can he conside

ddd [48]

Answer:

Forest ecosystem or marine ecosystem.

Explanation:

Forest ecosystem is considered for his report because large number of organisms are present in forest ecosystem. Species diversity is greatest in the geographical location of tropics, particularly in tropical forests. Marine ecosystem is also considered for his report due to the presence of large number of different types of species particularly in coral reef which is a habitat of large number of organism.

5 0

3 years ago