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dezoksy [38]
3 years ago
15

During transcription, enzymes bind to a molecule of DNA.

Biology
1 answer:
Hunter-Best [27]3 years ago
4 0
Replication thats the answer because my teacher we just know doing this
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What is more effective natural or artificial photosynthesis?
Shkiper50 [21]
Hello there,
Natural photosynthesis is more effective as it is utilizes energetically efficient primary events of light capture and charge separation.
But Actual photosynthesis is used to help natural photosynthesis

Hope this helps :))

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3 0
3 years ago
When the sun impacts weather, an interaction with the __________ takes place.
Nadya [2.5K]

Answer:

Hydrosphere

Explanation:

When the sun impacts weather, an interaction with the hydrosphere takes place. The hydrosphere is the part of the earth that is enveloped by water. Water exists in three different forms on the earth based on diverse factors.

Weather is the atmospheric condition of a place over a short period of time.

The sun causes the warming of the earth surface which leads to evaporation of water vapor into the atmosphere.

This water in the atmosphere is forms rainfall, one of the elements of weather.

The sun causes an impact on weather by causing evaporation of water into the atmosphere.

This interaction takes place in the hydrosphere.

7 0
3 years ago
Briefly describe how amniocentesis and chorionic villi sampling are used in genetic screening.
bearhunter [10]

Answer:

Amniocentesis is an invasive method that involves the aspiration of 10-20 ml of fetal water through the abdominal wall under ultrasound-guided control. In most cases, the procedure is performed around the 16th week of gestation. The fetal water sample contains fetal cells, mostly cells of fetal skin and the epithelium of the urinary tract.

Chorionic Villus Sampling (CVS) biopsy is performed between weeks 11 and 12 of gestation. During biopsy, with ultrasound guidance, the tissue of the chorionic fossa is aspirated mainly across the abdomen (transabdominal pathway). The biopsy specimen is of fetal origin and belongs to the outer layer of blastocyst cells or the trophoblast (outer layer of the placenta). Very often, the biopsy specimen contains tissue of the decidua (mucous membrane of the uterus) that is of maternal origin, and it is necessary to remove the maternal tissue before any treatment of the sample.

Explanation:

The amniocentesis procedure carries a risk of miscarriage of 0.5-1%.  After aspiration of the fruit of the water, the sample is centrifuged to separate the cells from the amniotic fluid. Separate cells are seeded on a nutrient medium (cell culture) that stimulates cell growth. After about 14 days, the cell culture is further used for various genetic or biochemical analyzes such as karyotyping.

The advantage of chorionic biopsy is the amount of biological material, which is sufficient for the whole a number of different laboratory procedures. Also, a great advantage is the timing of the procedure as it allows diagnosis in the first trimester of pregnancy, but the chorionic biopsy procedure itself carries a risk of miscarriage of 1-2%.

3 0
3 years ago
Classify the planets based on their composition.
Darina [25.2K]

Answer:

Terrestrial  - Mercury, Venus, Earth, and Mars

Gas Giants  - Jupiter, Saturn, Uranus, and Neptune

Ice Giants - Uranus and Neptune

Explanation:

Gas plants are the planets that are composed mostly of the gases in them such as helium and hydrogen found in Saturn and Jupiter planets there are four planets known as the gas giants that are Jupiter, Saturn, Uranus, and Neptune. However, Uranus and Neptune planets are known as ice giants as these two planets are cold and remote and made up of completely different gases from the other two gas giants.

Terrestrial planets are the planets that are more rocky and compact in terms of their surface and these planets are inner planets of our solar system that are Mercury, Venus, Earth, and Mars.

3 0
3 years ago
About how long does it take the Moon to orbit the Earth?
mamaluj [8]
It takes 27 days for the moon to orbit the earth
4 0
3 years ago
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