An agent able to cause DNA mutations is called mutagen. UV light is the most common source of radiation that affects DNA, but it is a weak radiation and it penetrates only the surface cells of your skin. However, UVA radiation is considered as a mutagen because it penetrates deep into the skin and can cause mutations.
UVA light is a mutagen because it can penetrate the skin and cause DNA damage. This damage can lead to mutations and potentially skin cancers. Protective clothing and sunscreen can help mitigate the risk.
UVA light is considered a mutagen because it has the ability to penetrate the skin and cause mutations. It does this by causing damage to the DNA in the cells of the skin. When UVA light hits the skin, it can break DNA strands or cause errors during DNA replication, which can result in mutations. Over time, these mutations may accumulate and lead to skin cancers like melanoma.
One way to protect oneself from UVA light is by wearing protective clothing or using sunscreens. However, prevention is not always complete, as some amount of UVA light can still get through these protective barriers.
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B) they are the starting materials for cellular respiration
C) they are also the final products for cellular respiration
D) they convert chemical energy into light energy
Answer:
B) they are the starting materials for cellular respiration
Answer:
They would dehydrate too rapidly and die. Plants (well, plants with true vascular systems) need to have water to dehydrate from the leaves to help draw the water up from the soil. This is transpiration, but without the waxy cuticle this would occur at an excessive rate, killing the plant.
Gene is basic unit of heredity is found on segments of DNA and are passed on from parent to offspring.
A gene is physical and functional unit of heredity which is made up of DNA.
Genes control both DNA and RNA function.
Some genes codes protein for functional expression of a trait where as some genes do not code for proteins.
In humans, the size of genes ranges from few hundred DNA bases to more than 2 million bases and human have between 20,000 and 25,000 genes.
Each gene have two copies, one is passed from each parent. Only 1 percent of the total genes is slightly different between people.
This is because of presence two different types of allele the same gene which contribute to each person’s unique physical features.
Learn more about gene, here:
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Answer:
Genes
Explanation:
Genes are sequences of nucleotides that determine characteristics. They are passed from parents to offspring.
Answer:
Passive
Explanation:
In addition to innate immunity and acquired immunity, there is a different type of immunity called passive immunity.
This arises when someone receives the antibodies from someone else for the purpose of preventing (or facing) an infectious disease.
While these antibodies last a few weeks or months, they have the benefit of providing immediate protection.
Examples of passive immunity:
- They are the maternal antibodies that babies receive through the placenta during pregnancy.
- Injection of antisera, produced in animals or other people, such as serum immuniglobulin for hepatitis and tetanus antitoxin.