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Rudiy27
3 years ago
10

Describe hydrogen bonding

Biology
1 answer:
snow_tiger [21]3 years ago
3 0

A hydrogen bond is the electromagnetic attraction between polar molecules in which hydrogen is bound to a larger atom, such as oxygen or nitrogen. This is not a sharing of electrons, as in a covalent bond. Instead, this is an attraction between the positive and negative poles of charged atoms.

Hope this helped :)

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When a helium balloon expands and the volume doubles what happens to the density of the helium inside it?
Kipish [7]
The density of the balloon decreases

6 0
3 years ago
Explain the base pairing rules of DNA. Provide an example of a strand of DNA with its complementary pair.
Darina [25.2K]

Answer:

Two DNA strands are complementary in their nucleotide sequences. A purine base in one DNA strand always pairs with a pyrimidine base of another DNA strand.

Explanation:

The base-pairing rules state that a purine base always pairs with a pyrimidine base in DNA. This is why adenine base makes two hydrogen bonds with thymine and cytosine makes three hydrogen bonds with guanine. Due to this complementary base pairing, the nucleotide sequence of the DNA template is complementary to that of the newly formed DNA strand during the process of replication.

For example, a DNA template strand with sequence 5' AATTCCGG 3' would replicate into the daughter DNA strand with the sequence 3' TTAAGGCC 5'.

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3 years ago
"Stretch marks are the result of tears in the integumentary layer that contains fibrous connective tissue, elastin, and collagen
Kobotan [32]

Answer:

dermis

Explanation:

7 0
3 years ago
Given that a virus divides every 3 hours, and that a cell lyses (explodes) after it reaches a viral load of 5,000,000 units, how
vladimir2022 [97]

The replication time for a virus starting at 1,500 units to lyse the cell is 5 hours.

<h3>How to calculate the Exponential growth/decay formula?</h3>

x ( t ) = x 0 × (1 + r ) t

  • x(t) is the value at time t.

  • x 0 is the initial value at time t = 0.

  • r is the growth rate when r/ 0 or decay rate when r < 0, in percentage.

  • t is the time in discrete intervals and selected time units.

Whit this information, we can conclude that the replication time for a virus starting at 1,500 units to lyse the cell is 5 hours.

Learn more about replication in brainly.com/question/13685752

3 0
2 years ago
A gamete has select one:
Pie
A gamete has one copy of each chromosome, it is haploid. 
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4 0
4 years ago
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