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kvasek [131]
3 years ago
8

Dna, the genetic material of living organisms, is damaged by light in the

Biology
2 answers:
asambeis [7]3 years ago
6 0
Ultraviolet sun rays it damages the cells and can cause skin cancer.
gayaneshka [121]3 years ago
6 0

Answer: ... in the UVB light exposure.

Explanation: When DNA is exposed to UVB radiation, thymine bases that are close to each other in the genetic sequence bond together, and this bond <u>cannot be copied</u> by the enzimes responsible for reproducing the genetic material. In the skin, it causes sunburns and stimulates the production of melanin. Luckily, DNA is only damaged by 0,1% of those UVB radiation photons, but even this percentege is enough to cause a sunburn anyway.

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DNA replication involves producing new copies of DNA molecules. How many individual DNA strands exist after one molecule of DNA
levacccp [35]
After a molecule of DNA replicates, two double-stranded molecules are formed. This results in a total of four strands of DNA.
6 0
3 years ago
Read 2 more answers
Can someone helppppppppppppppppppppppp
zzz [600]

Answer:

Lymphatic: bacteria invade the body but are removed with the help of cells

Endocrine: A chemical message is signaled to help the body relax and sleep

Nervous: The brain signals for the muscles to contract

Explanation:

Lymphatic system is the part in the body that uses the cells in your body to help it.

The endocrine system is about hormones and how the body needs to maintain stable and have homeostasis.

The brain is part of the nervous system and it sends signals to other parts of the body.

5 0
3 years ago
Read 2 more answers
Food contains 1.1 g carbohydrates 13 g protein and 11 g fat how many calories does the food provide
Juliette [100K]

Answer:

‼️‼️‼️155.4 calories‼️‼️‼️

Explanation:

1 gram of fat = 9 calories

1 gram of carbohydrates = 4 calories

1 gram of protein = 4 calories

11x9 = 99

1.1x4 = 4.4

13x4 = 52

This would get you go this question thus the answer to your question

99 + 4.4 + 52 = 155.4 calories

6 0
3 years ago
Chromosomes condense at the start of mitosis so that they can be more easily between the two nuclei
Slav-nsk [51]
What's the question?
5 0
3 years ago
A land developer and several ecologists are discussing how a parcel of private land should be developed with housing while savin
FromTheMoon [43]

Options for the question have not been provided. They are as follows:

A) The single intact parcel would have a smaller amount of edge than the 20 separate parcels.

B) The isolated hectare plots increase the ability of individuals to disperse from one habitat to another.

C) The separate 1-hectare plots are less vulnerable to edge effects.

D) The large plot will create more inbreeding in many species.

Answer:

A) The single intact parcel would have a smaller amount of edge than the 20 separate parcels.

Explanation:

In the given case, 20 hectares of land has been allocated to natural habitat. This means that natural flora and fauna will flourish here without any human interference. In this situation it is better to have an intact 20 hectares area at one side of the land, rather than having 20 separately spread out 1 hectare areas. This is because having one large piece of land at one side will reduce the edge effect.

Edges occur where two different habitats meet. While edges can be beneficial when it comes to natural habitats because the boundary habitat increases overall biodiversity, it can be detrimental when the edges are due to human settlements. It will be difficult to avoid human interference as the natural habitats are scattered among human settlements. Each individual plot will also get less area due to which it will be difficult for all the species to accommodate comfortably. Many animals can venture out in search of food which can be dangerous to both animals and humans. It is better to have a big separate land at one corner so that everyone can survive peacefully.

3 0
3 years ago
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