Ans.
Land plants were evolved on the Earth around 850 million years ago. The ancestors of plants are considered as plant-like single cell organisms. These organisms include tiny protists, that were capable of performing photosynthesis as nearly all land plants perform photosynthesis. An example of photosynthetic protist is green alga.
Thus, 'the ancestors of land plants likely evolved from single-cell, photosynthetic protists, such as green algae.'
Answer:
In the α helix structure, there is a hydrogen bonding between oxygen atom in a carbonyl of one amino acid and the hydrogen atom of the amino group that is situated four residues farther along the polypeptide chain
Explanation:
The common secondary structure of protein are: <em>α helix and β pleated sheet</em>
<em>α helix </em>is a rod like structure.<em> </em>It is a<em> right handed coil </em>of amino acid residue on a polypeptide chain, which may be 4 units or 40 units long. The coil is held together by hydrogen bond between oxygen atom in a carbonyl of one amino acid and the hydrogen atom of the amino group that is situated four residues farther along the polypeptide chain. This means that every complete turn of the helix is only 3.6 residues.
C. their magnetic domains are arranged randomly
In magnetized materials, all or most of the magnetic domains are arranged in the same direction
Answer:
Limitation of invasive species
Explanation:
this means that more animals will get to live their lives without being attacked by predators which therefore means that there is more biodiversity because less animals are dying
A ribosome is a cell organelle. the function of a ribosome is like a micro-machine for making proteins. the ribosomes is composed of special proteins and nucleic acid. it is also formed from two sub units, locking together its function are to translate the encoded information from the cell nucleus provied by the messenger.
