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xenn [34]
3 years ago
9

Describe the characteristics of archaebacteria.

Biology
1 answer:
4vir4ik [10]3 years ago
8 0

Archaebacteria are obligate anaerobes, i.e., they flourish in the strict absence of oxygen., and that is why only they can undergo methanogenesis.

The cell membranes of the Archaebacteria are composed of lipids.

The rigid cell wall provides shape and support to the Archaebacteria.

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Discuss the meaning and significance of the fact that the<br> genetic code is degenerate.
kakasveta [241]

Answer:

When a single amino acid is encoded by more than one codon.

Explanation:

Degeneracy is when a single amino acid is encoded by more than one codon. This pehonomenon was first described by Lagerkvist where there are more codons than amino acids that could be encoded.

5 0
3 years ago
During a routine prenatal care visit, a pregnant woman in her last trimester of pregnancy reports that she has occasional shortn
Gala2k [10]
Shortness of breath is very common in the last trimester of pregnancy. This is because, the baby inside the uterus is growing and it starts to push the uterus that compresses the lungs above the diaphragm. This, leads to restricted expansion of the lungs while breathing and causes shortness of breath. Another reason for shortness of breath can be due to low iron content in the body.
If a pregnant woman in her last trimester reports occasional shortness of breath, the nurse should instruct her to:
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4 0
3 years ago
What is the role of the dna ligase in dna replication
marissa [1.9K]
DNA ligase is an enzyme that repairs irregularities or breaks in the backbone of double-stranded DNA molecules. It has important role in the process of DNA replication and DNA repair. It has three general functions: It seals repairs in the DNA, it seals recombination fragments, and it connects Okazaki fragments (small DNA fragments formed during the replication of double-stranded DNA). DNA ligase functions by forming a bond between the end of a “donor” nucleotide and the end of an “acceptor” nucleotide.
4 0
3 years ago
Read 2 more answers
What process is responsible for or leads to magma that is intermediate and often variable in chemistry, when erupted in the casc
ozzi
Intermediate magma is also known as andesitic magmas and these are created when an oceanic plate subducts beneath a continental plate. The magma is generated in the wedge of mantle rock beneath the crust. The Cascade Mountain Range is formed due to the subduction of the Juan de Fuca Plate beneath the North American Plate. 
8 0
3 years ago
Which of the three tests included in McGill’s torso muscular endurance test battery is a timed test involving a static, isometri
tekilochka [14]

Answer:

Trunk flexor endurance test.

Explanation:

McGill’s torso muscular test is generally used to assess the muscle endurance of the torso muscles that works as a stabilizer. This test generally includes the four major test.

The test that includes the trunk flexor of the endurance test is a timed test that involves the static isometric contraction of the muscles. This test stabilizes the spine til the individual cannot hold the assumed position and the individual exhibits the fatigue.

Thus, the correct answer is option (A).

7 0
3 years ago
Read 2 more answers
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