Answer:
B. The amount of unbound cyclin E is lowest as the cell enters S.
Explanation:
The reproduction of the cell is a cycle that it regulates by itself, depending the demand of a certain cell.
In the case of the mitosis, in Each change from G1 to S to G2 to M is regulated by some proteins like the cyclin.
In the case of the cdK2 is ncessary to pass the control point to pass from the stage G1 to the stage S.
Another characteristic of the cyclins, is that these proteins are synthetized and degraded constantly during the hole process.
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Answer: A penumbral lunar eclipse occurs when the Sun, Earth, and the Moon are imperfectly aligned.
Explanation: During this occurance the Earth comes between the Sun and moon and blocks the sunlight from falling on the moon.
TACGGCGATT
All you need to do is switch the letter since A=T and C=G
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When light reaction occurs in the stroma of chloroplast glucose is produced
Large polymers are created during dehydration synthesis, which are typically referred to as biological macromolecules. These compounds include proteins, lipids, carbohydrates, and nucleic acids.
As a result, the dehydration reaction is responsible for the formation of protein, lipid, and nucleic acids.
1. Protein structure
- Amino acid polymers form proteins. There are four different types of proteins, based on structure.
- The amino acid sequence of a protein is represented by its primary structure, which is a linear chain.
- The backbone (main chain) atoms of a polypeptide are arranged locally in space to form the protein's secondary structure.
- A polypeptide chain's whole three-dimensional structure is referred to as a protein's tertiary structure.
- The protein's quaternary structure, which is a three-dimensional arrangement of the subunits of a multi-subunit protein.
2. Lipid structure is a crucial element of the cell membrane. The structure is mostly composed of a glycerol backbone, two hydrophobic fatty acid tails, and a hydrophilic phosphate group.
3. Nucleic acids' structure: Nucleotide polymers make up nucleic acids. Each nucleotide is made up of an aromatic base with a N-atom connected to a pentose sugar with five carbons, which is then joined to a phosphate group.
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