Groups of 3 bases are referred to as codons.
Each codon codes for an amino acid.
A group of amino acids makes a protein.
These proteins are then used to carry out basic life functions
The fifth week of pregnancy is considered part of the embryonic stage of prenatal development.
During this stage, the embryo continues to grow in size, the placenta and the amniotic fluid begins to form, and the mother experiences several hormonal changes as a response to the embryo's implantation into the uterus of the mother.
The embryo's cells begin forming specialized functions in a process called differentiation. The baby's heart, spinal cord, and brain begin to develop, so as his/her blood cells, kidney cells, and nerve cells. His/her external physical features also begin to form.
The embryonic stage ends at the end of the 10th or the beginning of the 11th week of pregnancy, where the developing baby is now called a fetus.
Answer:
Photosynthesis produces glucose and oxygen. These are things that are needed by humans so that we can breathe, which is how humans make energy so 5hat we can do everyday things like walking and running. Without photosynthesis, the human race wouldn't be able to survive.
The correct answer is: D, a decreased number of oxygen-rich mitochondria.
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