41. C.DNA is made up of proteins, which tells a cell how to function
42. <span>C. So they can move materials from one area of the cell to another quickly
A DNA is made of proteins which was synthesized by ribosomes of the cell to produce protein and these proteins are churned into mRNA and then these mRNA and used to catalyse the DNA production. DNA of a cell in the nucleus is the programmed individuality that controls, manages and organises the entire cell to function and initiate cellular activities.
It is more efficient, thus, to move materials quickly.
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Redbeds indicate the presence o iron in the environment. Red beds are red sedimentary rocks and the color is due to the presence of the ferric oxides. Ferric oxides occur as a coating on the sedimentary grains. In between the shale and cherts, iron-rich sediments can be found.
The answer would be white noise
Replication of the DNA and cell growth occur during the S-Phase of the cell cycle.
Answer:
OH, H2O2 and O−2
Explanation:
Reactive oxygen species (ROS) can be defined as highly reactive chemical compounds formed from molecular oxygen (O2). ROS are generated as a normal product of cellular metabolism, and also as a response to different environmental/internal cellular stimuli (e.g., cytokines, xenobiotics, pathogenic invasion). For example, hydroxyl radicals (·OH) are a type of ROS generated in the mitochondria which are capable of inducing oxidative stress in different cells and also trigger chronic inflammation. Moreover, hydrogen peroxide (H2O2) molecules represent another type of ROS which are produced during the stereoselective deamination of amino acids, i.e., the building blocks of proteins. These molecules (H2O2) exhibit toxic effects on the cell (e.g., DNA damage). Finally, singlet oxygen (1O2) is an excited state of molecular oxygen (O2) that is generated during photosynthesis in the photosystem II (PSII) of chloroplasts.
