The following DNA fragment was isolated from the beginning of a gene. G G G A T G C G G A A A G T C C A A
C C C T A C G C C T T T C A G G T T

Determine which strand is transcribed, indicate the polarity of the two DNA strands, and then give the sequence of bases in the resulting mRNA and its polarity.

Answers

Answer 1

Answer: A strand that is transcribed is called a template strand, the other one is called a coding strand. The template strand is in 3'-5' direction, and the coding strand is in 5'-3' direction. mRNA is transcribed from 3'-5' template DNA strand, so it is in 5' to 3' direction. The first codon of mRNA is called start codon and usually it is AUG.

Knowing this, we can answer the questions:

The transcribed strand must contain three nucleotide sequence complementary to AUG codon. According to the base pairing rules, it must be TAC. The strand that contains TAC, and, thus, is transcribed is
C C C T A C G C C T T T C A G G T T.
This template strand is in 3'-5' direction and the other one is 5'-3'.
mRNA transcription begins from the DNA sequence complementary to AUG codon:
DNA sequence: 3' C C C T A C G C C T T T C A G G T T 5'
mRNA sequence: 5' A U G C G G A A A G U C C A A 3'
mRNA sequence is in 5'-3' direction.

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The E-FIT system was developed by whom?

Answers

Electronic Facial Identification Technique System or E-FIT System is the use of computer technology to create highly accurate photos of someone as described by a witness.. It is commonly used in solving crimes or searching for a missing person. E-FIT System was firstly used by John Platten in the late 1980's and later developed and improved by Dr. Matthew Maylin.

Community interactions includea. predation.
b. competition.
c. symbiosis.
d. all of the above.

Answers

The answer to your question is d. All of the above

What inables humans to see light in the infared range of the electromagnetic spectrum?

Answers

I believe its a UV sensor thermogram.

What BEST describes the DNA in two daughter bacteria cells?A. halved
B. doubled
C. identical
D. unrelated

Answers

Identical best describes the dna in two daughter bacteria cells. Hope this helps!

so the answer is <B>.........

2. Circle the letter of each sentence that is true about water's structure.A water is made up of atoms bonded to form molecules
B. water contains halt as many hydrogen atoms as oxygen atoms
Ć water molecules tend to push away from each other
D. the chemical formula for water is H.O

Answers

Final answer:

Water is made up of atoms bonded to form molecules, it contains twice as many hydrogen atoms as oxygen atoms, and water molecules tend to push away from each other.

Explanation:

A. Water is made up of atoms bonded to form molecules.
B. Water contains twice as many hydrogen atoms as oxygen atoms.
C. Water molecules tend to push away from each other.
D. The chemical formula for water is H2O.

Learn more about Water's Structure here:

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Answer: a

Explanation:

because water is 2 hydrofen atoms bonded with an oxygen atom

what does 50 percent humidity mean? A. The air contains 50 percent of the moisture it can hold before precipitation occurs B. There is a 50 percent change of precipitation C. The air temperature is 50 degrees celsius D. There is a 50 percent chance of a thunderstorm occurring

Answers

Answer: The correct answer is-

A. The air contains 50 percent of the moisture it can hold before precipitation occurs.

Humidity can be described as the presence of gaseous state of water (that is water vapor) in the atmosphere or air.

It indicates the chances of occurance of precipitation or fog in the weather.

50% humidity represents the relative humidity, indicating that air is 50% saturated with moisture, which could be held by air before precipitation occurs .

50% humidity indicates that before precipitation the air withholds 50% moisture and it is known as relative humidity.

Further Explanation:

The amount of moisture the air contains is defined by humidity. A particular amount of water vapor is present in the air which depends on the temperature of the air. The warmer air contains holds more water within it. The relative humidity is defined as the content of water vapor found in the air in relation to the amount it can actually hold. When the relative humidity is low, it implies that the air can comparatively withhold more moisture at that particular temperature and this makes the air dry.

For example, it is estimated that a cubic meter of air is able to hold 18grams of water as a maximum value at 20 degrees C. Similarly, at 25 degrees C, 22 grams of water can be held by the air. Therefore, if 22 grams of water is contained in a cubic meter of air at 25 degrees C, then there is 100% relative humidity. But if the same amount of air holds 11 grams of water, the relative humidity is said to be 50%.

The relative humidity plays a major role in maintaining our level of comfort. A 100% relative humidity means that there will be no evaporation of water and the moisture has fully saturated the air. For cooling, the body requires to evaporate the moisture from the skin. A low relative humidity enables the body to release moisture and make the body cooler. At 100% relative humidity, the body feels much hotter as compared to the actual temperature. This is because the body does not sweat to evaporate due to high humidity.

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Answer Details:

Grade: High School

Chapter: Relative Humidity

Subject: Biology

Keywords:

Humidity, relative humidity, water, water vapor, moisture, temperature, evaporation.

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