Answer;
a segment of chromosomal DNA
Explanation;
A gene is a hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism. Genes undergo mutation when their DNA sequence changes.
It is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins.
Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.
Answer: D
explanation: it’s proven that photosynthesis creates the energy for the plant and cellular respiration utilizes it.
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Answer:
c. macula densa
Explanation:
The cells of the macula densa are sensitive to the concentration of sodium chloride in the distal convoluted tubule. They are a part of the nephron.
There body will be able to fight off sickness and cancers again. The immune system will slowly start to rebuild and become strong again.
Answer:
A
Explanation:
The cerebral cortex can be described as the thin layer of the brain that covers the outer part of the cerebrum. This layer is also made up of tightly packed neurons and can also be described as the wrinkly, outermost layer that surrounds the brain (the surface of the brain is not smooth but consist of folded bulges that is called gyri which create deep fissures called sulci). This increases the surface area and also the amount of information that is processed. It is also referred to as the gray matter and is also responsible for higher thought processes including speech and decision making
