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andriy [413]
3 years ago
12

What protect the body from ultraviolet ray

Biology
2 answers:
likoan [24]3 years ago
8 0
Skin pigments actually protect us from ultraviolet rays!
Natasha2012 [34]3 years ago
8 0
Hi , our skin has the ability to produce a pigment called melanin , this pigment stops UV rays from damaging ourselves .
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How does translation occur
julsineya [31]

Translation is the process by which a protein is synthesized from the information contained in a molecule of messenger RNA (mRNA). ... Translation occurs in a structure called the ribosome, which is a factory for the synthesis of proteins.  -google

7 0
3 years ago
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Muitos casos de endocardite, infecção nas válvulas do coração, são originários de infecções dentárias. Explique uma possível rel
guapka [62]
I don't understand its not my language I would like to help but I can't
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4 years ago
What is the body's first line of defense against disease?
KATRIN_1 [288]

Answer:

The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.

Explanation:

7 0
3 years ago
Which best describes the process of making recombinant DNA? The isolated DNA is inserted into a mechanical vector for cloning. T
OLEGan [10]

Answer:

The correct answer would be "The sticky ends of fragmented DNA are joined with vector DNA".

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The fragments are joined by creating the sticky ends in the DNA fragments.

These sticky ends are complementary to each other which helps the fragments to join to each other.

For example, the sticky end of a gene of interest and the sticky end of the vector DNA joined together to form a recombinant vector.

4 0
3 years ago
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you are studying a bacteria plasmid that contains 5 operons and 15 genes. how many transcriptional promoters are on this plasmid
mojhsa [17]

Numerous catabolic operons have their transcription controlled by glucose. The three enzymes needed for conversion are encoded by the operon's five structural genes.

<h3>How many genes are there in an operon?</h3>

Operons have a transcription promoter at the beginning, two to twelve genes on average, and a transcription terminator at the conclusion (Zheng et al. 2002; Lawrence 2003).

<h3>Yes, there is just one promoter for operons.</h3>

An operon is a group of genes that all use the same transcriptional promoter. Every operon contains regulatory DNA sequences that act as binding sites for regulatory proteins that either promote or inhibit transcription.

<h3>The promoter is a 3 or a 5?</h3>

An area of DNA known as a promoter is where RNA polymerase starts to transcribe a gene. Promoter sequences are often found directly in the genome.

To know more about transcriptional promoters visit

brainly.com/question/12700084

#SPJ4

4 0
2 years ago
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