Answer:
Oxygen is the component of Earth's atmosphere which exists entirely as a result of photosynthesis.
Answer:
The gene for the protein is turned on and off at different times.
Explanation:
The turning on and off of the gene is described as gene regulation. This process is important because it enables the cells to react quickly to the changes in the environment.
Note that , this process mostly occur at transcription level during gene expression , and help in determining the amount of protein made by a gene.
The answer needed to complete the statement above is the External Urethral Sphincter. It a skeletal muscle, in contrary to the internal urethral sphincter, whose location is at the urogenital diaphragm. Its function is the voluntary control of urine in the bladder.
Genetically modified food is food produced from plants or animals whose DNA has been altered through genetic engineering. These genetically modified organisms are often called GMOs for short.
