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Sati [7]
3 years ago
10

50 points!! please help rewrite this in your own words thank you!!

Biology
2 answers:
kari74 [83]3 years ago
5 0

russia is cool like its cool

Eddi Din [679]3 years ago
4 0

A Russian botanist and biochemist named Alexander Oparin came up with the idea that the first cells in existence might have formed from liquid droplet protocells. He assumes that the protocell can act naturally and form a container without membranes that is concentrated in chemicals

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(03.05 hc) the base pairs in a dna strand are held together with hydrogen bonds. if the two nitrogenous bases in each pair were
asambeis [7]

The cell would have to take in and use more energy in order to break the covalent bonds.

The correct option is B

Hydrogen bonds :

are the chemical mechanism that governs the complementarity of the bases of DNA. This correspondence is unique thanks to the geometry of the hydrogen donor atoms and the acceptors that form the bases.

The (hydrophobic) bases are stacked inside the double helix of DNA; their plane is perpendicular to the axis of the double helix. The outside (phosphate and sugar) is hydrophilic.

The hydrogen bonds between the bases of one strand and the bases of the other strand keep the 2 strands united.

One purine on one strand necessarily binds to a pyrimidine on the other strand. As a corollary, the number of purine residues is equal to the number of pyrimidine residues.

* A binds to T (by 2 hydrogen bonds).

* G binds to C (via 3 hydrogen bonds: more stable bond: 5.5 kcal vs 3.5 kcal).

What part of the DNA strand do hydrogen bonds hold together?

hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.

Learn more about DNA strand:

brainly.com/question/26466656

#SPJ4

7 0
2 years ago
Which cell organelle is most directly involved with the bonding of amino acids?
Archy [21]
The ribosome is involved with the bonding of amino acids
6 0
3 years ago
The words ""antigen"" and ""virus"" are interchangeable.
andrew11 [14]

Answer:

False

Explanation:

A virus (which is a pathogen) has a lot of antigens on its surface, so they can't be used interchangeably.

6 0
2 years ago
How does carbon dioxide affect the ecosystem
FrozenT [24]

As a greenhouse gas that absorbs heat, CO2 raises the temperature of the atmosphere. We refer to this as global warming. The glaciers will melt more quickly as the world's temperature rises, raising sea levels and bringing on disaster. More power is consumed for air conditioning as the temperature rises, which further raises the air's CO2 level.

Since coal is the primary fuel utilized in the creation of power. This creates a vicious cycle.

3 0
2 years ago
D. The types of animals and plants found in the himalayan region and the Terai region differ​
rewona [7]

The Himalayan region is located at a height of more than 3300m above sea level. Similar to Terai, the hilly region's altitude spans from 600 to 3300 meters above sea level. In Terai, it is hot, whereas the Himalayas are frigid. In the Hilly region, the temperature is moderate and neither hot nor cold.

<h3>How the Himalayan differ from the Terai region ?</h3>

Due to differences in geographical makeup and height, the mountainous, hilly, and Terai regions differ from one another. Mountains are found in high elevation.

  • Bengal tigers are most numerous in the Himalayan grasslands, where they coexist with Asian elephants and one-horned rhinos. Red pandas, golden langurs, and takins can find refuge in the highlands. Bengal tigers and snow leopards are only known to coexist here in the globe.
  • Rhododendrons are found all throughout the world, although they are more prevalent in the wetter regions of the eastern Himalayas, where they can grow as tall trees or short shrubs. In the alpine zone's lower elevations, when humidity is high, mosses and lichens thrive; flowering plants are found at higher elevations.
  • Sloths, Himalayan black bears, yellow-throated martens, Himalayan gorals, Ganges dolphins, gharials, and crocodiles are some other rare animals. Human-animal conflict is a pressing issue in the Terai Arc, which encompasses a substantial portion of the state of Uttar Pradesh.
  • Cycas pectinata, Gnetum montanum, Duabanga grandiflora, Calamus species, Cythea pinulosa, Pandanus nepalensis, and Podocarpus neriifolius are examples of the typical vegetation in this area. The Terai region as a whole is dominated by Shorea robusta (sal).

To know more about the Himalayan region please click here : brainly.com/question/26697261

To know more about the Terai region please click here : brainly.com/question/20882485

#SPJ4

6 0
2 years ago
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