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vaieri [72.5K]
3 years ago
15

In a sample of double-stranded DNA, 30% of the nitrogenous bases are adenine (A).

Biology
1 answer:
Sholpan [36]3 years ago
5 0

Answer:

30% thymine

Explanation:

If 30% of Adenine is present, it would be reasonable to assume that 30% of Thymine will be present, as the ratio between the two complementary nitrogenous bases will be roughly equal. Therefore, that leaves us with 40% between Cytosine and Guanine.

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What's the new peptide chain when the new DNA segment is translated?
saveliy_v [14]

Answer:

The correct answer is - Methionine, serine, histidine, aspartate, glycine

Explanation:

The new segment of DNA is: 3'-TACAGGGTGCTACCCACT-5', which performs two processes to form a peptide chain, transcription, and translation. In transcription, the DNA segment is encoded to an mRNA molecule which has its complementary sequence to DNA sequence.

New DNA strand: 3'-TACAGGGTGCTACCCACT-5'

mRNA sequence: 3'-AUGUCCCACGAUGGGUGA-5'

The translation of this mRNA would be on the basis of chart

AUG - Methionine (start codon)

UCC - serine

CAC - histidine

GAU - aspartate

GGG - glycine

UGA -  stop codon

The peptide chain would be - Methionine, serine, histidine, aspartate, glycine

5 0
3 years ago
Pls answer this guys
Simora [160]

Answer:

D.None of the Above

Explanation:

Hope it helps you

7 0
3 years ago
summary of 2 main parts of photosynthesis (light-dependent reactions and light-independent reactions/Calvin Cycle). Be sure to e
Alex_Xolod [135]

Explanation:

Photosynthesis is a process taking place in the green plants which are involved in the formation of the glucose molecule using Carbon dioxide and water in the presence of sunlight.

The process of photosynthesis takes place in two phases:

1. Light-dependent phase

2. Light independent phase

<u>Light-dependent phase </u>

Light-dependent phase takes place in the thylakoid membrane where the Photosystem I and II are present.

The photosystem II absorbs the sunlight of 680 nm wavelength which excites the electron of the chlorophyll. The electron moves in the photosystem and through the reaction center-exit the photosystem and enters the electron transport chain.

The electron is then transferred via the electron carriers like plastoquinone, cytochrome, and plastocyanin and is transferred to photosystem I which absorbs the light at 700 nm. From here the electron is taken by ferrodoxin and form NADH.

The electron then reaches the ATP synthase and forms the ATP molecules thus ATP and NADPH are formed in the reaction but the loss of electron in chlorophyll is fulfilled by the water molecule which on hydrolysis provides the electrons and stabilize the structure.

<u>  Light independent phase </u>

The phase during which the Rubisco enzyme binds with the carbon dioxide and forms 3-PGA. This 3 PGA is then reduced to G3P which requires the 6 ATP molecules. The G3P molecule then forms 1 molecule of glucose and the Rubp is again regenerated.

7 0
3 years ago
Surgical removal of parts of the brain to determine their function relies on a technique called
Lelechka [254]
Pretty sure answer is <span>ablation</span>
5 0
3 years ago
What structure is highly vascular and closely adheres to the surface of the brain?
tatyana61 [14]

Pia mater

<span>Pia mater is a highly vascular tissue that cleaves firmly to the surface of the brain and spinal cord. Pia mater protects the central nervous system by nourishing the brain and allowing blood vessels to pass through it. The inflammation of the pia mater can lead to meningitis</span>




6 0
3 years ago
Read 2 more answers
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