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2 years ago

What is a lunar calendar and who created it?

Biology

2 answers:

Aleksandr-060686 [28]2 years ago

7 0

Answer:

The lunar calendar became the basis of the calendars of the ancient Chinese, Babylonians, Greeks, and Jews

Greek astronomers also devised rules for intercalations to coordinate the lunar and solar years. It is likely that the Roman republican calendar was based on the lunar calendar of the Greeks

svet-max [94.6K]2 years ago

7 0

A Lunar calendar is based upon the Moon cycle of Moon phases. The Sumerians.

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3 years ago

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How can I use the phrase "chemical pollution" in a sentence?

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3 years ago

Which statements are accurate about snowflakes

Daniel [21]

Answer:

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Explanation:

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3 years ago

Comparing DNA Replication and Transcription

ozzi

The missing information has been completed as:

DNA Tempelate complementary DNA mRNA

3' TTACG 5' 5' AATGC 3' 5'UUACG 3'

3' AAUGC 5' 5' TTACG 3' 5'UUACG 3'

3' GGCGG 5' 5' CCGCC3' 5' CCGCC3'

' 3'TGCATCG5' 5' ACGTAGC 3' 5' ACGUAGC 3'

3' AGACTC 5' 5' TCTGAG 3' 5' AGACTC 3'

3'GATAAGA 5' 5' CTATTCT 5' 5' CTAUUCA 3'

3' CTGGCTAC5' 5' GACCGATG 3' 3'CUGGCUAC 5'

Explanation:

Some of the sequence of DNA given is in 3' to 5' direction, mRNA sequence is also given.

The DNA is double stranded helix which replicates by semi conservative mode. The two strands unwind to act as a template for other strands. In transcription the 3' to 5' strand acts as a template because RNA synthesis takes place in 5' to 3' direction. mRNA is single strand. It has nucleotides in it from which 3 base pairs acts as a code for amino acid.

The following table shows DNA strand having complementary sequaence and mRNA synthesized.

DNA Tempelate complementary DNA mRNA

3' TTACG 5' 5' AATGC 3' 5'UUACG 3'

3' AAUGC 5' 5' TTACG 3' 5'UUACG 3'

3' GGCGG 5' 5' CCGCC3' 5' CCGCC3'

' 3'TGCATCG5' 5' ACGTAGC 3' 5' ACGUAGC 3'

3' AGACTC 5' 5' TCTGAG 3' 5' AGACTC 3'

3'GATAAGA 5' 5' CTATTCT 5' 5' CTAUUCA 3'

3' CTGGCTAC5' 5' GACCGATG 3' 3'CUGGCUAC 5'

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3 years ago

Which of the following modifies and smoothes the respiratory pattern?

stealth61 [152]

The correct answer is: A) pontine respiratory centers

The respiratory centre in the pons is responsible for generating and maintaining the rhythm of respiration. Besides this elementary function, it also has the ability to adjust respiration rhythm in c response to physiological changes. Respiratory centre consists of three major respiratory groups of neurons:

• The dorsal respiratory group (DRG)- initiates inspiration (inhalation)

• the ventral respiratory group (VRG)-responsible for exhalation

• Pontine respiratory group- includes the pneumotaxic (controls both the rate and the pattern of breathing) and apneustic centers (promotes inhalation by sending signals to dorsal group).

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3 years ago