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nordsb [41]
3 years ago
9

What caused the decrease in the global human population in 1400?

Biology
1 answer:
Alinara [238K]3 years ago
4 0

Answer:

<u>Pandemic plague</u>

Explanation:

The Black death or the Great Plague occured during 1347 to 1351 in Eurasia causing death of almost 75 million to 200 million people. The cause of this plague was identified a bacterium known as <em>Yersinia pestis . </em>This plague outbreak was first major European plague pandemic and it killed almost 30% to 60% population of the Europe.

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The myocardium receives its blood supply from the coronary arteries. True or False
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Answer:

The statement is true.

Explanation:

The myocardium is the muscle tissue of the heart, a muscle responsible for pumping blood through the circulatory system through contraction. It receives a part of the large volume of blood that passes through the atria and ventricles. A system of arteries and veins (coronary circulation) provides the myocardium with oxygen-rich blood and allows the return of venous or oxygen-poor blood to the right atrium. The right coronary artery and the left coronary artery are the branches of the aorta responsible for the blood supply.

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3 years ago
4. A trait for snapdragon flower color is controlled by incomplete dominance.
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The following sequence of double stranded DNA encodes a hypothetical protein called GEN in a bacteria. Transcription starts at a
vaieri [72.5K]

Answer:

A) AUG GAG GGU

B) N-MET-GLU-GLY-HIS

C) 10 amino acids

D) The stop codon here is UAA, instead of UAG.  If a tryptophane residue is added where the stop codon is, the GEN polypeptide would be longer

Explanation:

First we must obtain the the complementary chain or mRNA

A) AUG start codon is complementary to DNA TAC triplet, and GAG is complementary to CTC, and GGU to CCA (running from left to right towards 5'DNA direction (AAGCGGATACCTCCCAGTAGATGCTCCGGGGCTAGTGATTTCGAAC-5)

B) TAC corresponds to Methionine, GAG to Glutamate, GGU to Glycine, and CAU to Histidine

C) UAA is the stop codon, that is complementary where the DNA triplet is ATT.  From AUG to UAA, we can have 10 amino acids transcribed

D) If a trp is included where the stop codon is UAA, then the mRNA would be longer with a consequent traduction of a longer GEN polypeptide

8 0
2 years ago
Assess your physical fitness; what areas of health-related fitness do you believe are your strengths and what areas do you belie
yawa3891 [41]
This is more of a personal question about how well you know yourself, no one can answer this for you.
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Amino acids for- GACAAUGAAAGUUAGCAUGUGGUUGUGACGAAAG
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Answer:

idk

Explanation:

im very sorry about this but i dont know the answer

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2 years ago
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