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ehidna [41]
3 years ago
15

Students are given data from an investigation that identified some of the chemical elements present in four different samples

Biology
2 answers:
zvonat [6]3 years ago
5 0

Answer:

sample 1

Explanation:

has phosphorus, main chemical compund

Lorico [155]3 years ago
3 0

Answer: a-sample 1

Explanation:

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WILL GIVE BRAINLIEST. A woman that is homozygous recessive (bb) for blue eyes and a man that is heterozygous (Bb) for brown eyes
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Photodecomposition, photomutagenicity and photocytotoxicity of retinyl palmitate under He-Ne laser photoirradiation and its effe
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The effects on photodynamic therapy of cancer cells in vitro is that retinyl palmitate (RP) can be used 24 h before PDT to enhance its effects. RP is not mutagenic under irradiation with He–Ne laser.

HeLa cells with or without RP (retinyl palmitate) that was incubated with the cells for a short or long incubation period prior to PDT are typically used to test the effects of PDT (photodynamic therapy) using hematoporphyrin derivatives (HpD) as photosensitizer under He-Ne laser irradiation.

No photodecomposition of RP alone is visible, but a small amount is seen of in the presence of HpD under He-Ne laser irradiation is seen. No photomutagenicity is often seen under laser irradiation. HeLa cell viability can be dramatically reduced by RP alone. A 24 hour incubation period before PDT increased the cytotoxicity of PDT on HeLa cells.

Therefore, retinyl palmitate (RP) can be used 24 h before PDT to enhance its effects. RP is not mutagenic under irradiation with He–Ne laser.

Learn more about retinyl palmitate here:

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2 years ago
A ________________________________ describes a pattern observed in nature.
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scientific law

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