Answer;
The above statement is true.
Explanation;
-The sun's chromosphere emits radiation in an electromagnetic band that gives humans skin cancer.
-The chromosphere
is the region of sun's atmosphere just above photosphere
.
-The most inner to the outer layers of the sun
are the core, radiation zone, convection zone, photosphere, chromosphere, transition zone, corona, and solar wind.
-The chromosphere produces emission spectrum
and visible UV & X-ray lines from highly ionized gases.
Clearly these are the structures of a plant cell
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.
Answer:
Sarcomeres are functional units of skeletal muscle fiber.
Explanation:
Hope this helps!
