Questions 1-5 (Im struggling out here pls respond fast)

Which type of wave does not require a medium to travel through? A. a light wave B. a sound wave C. a tidal wave D. an ocean wave

Sedbober [7]

The answer is A. a light wave

C and D both need water as a medium and sound needs air to vibrate in order to travel. light, on the other hand, does not need a medium

8 0

2 years ago

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2. Which of the following is a CORRECT pairing of the RNA type and the

zzz [600]

ANSWER

mRNA - formed from the DNA gene sequence with the help of RNA polymerase.

EXPLANATION

mRNA contain codons which are complement to

tRNA anticodons.

rRNA formed in nucleolus.

tRNA carries the amino acid.

7 0

2 years ago

8. All the abiotic and biotic factors that interact with each other is called

3241004551 [841]

Answer:a niche

Explanation:

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2 years ago

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D) During Transcription, a nucleotide has been deleted. Explain the effect this will have

valkas [14]

Answer:

this mutation may change the open reading frame of the resulting RNA sequence and its final product, which is a protein in the case that this gene is used to synthesize a messenger RNA (mRNA) sequence

Explanation:

During the transcription, a region of DNA named 'gene' is used as template to produce an RNA molecule, typically a primary transcript of mRNA (pre-mRNA). Subsequently, this pre-mRNA suffers a process named RNA processing in order to generate a mature mRNA which is finally used to create a protein by a process called translation. If a deletion occurs during transcription, it may change the open reading frame (ORF) of the resulting mRNA when the mutation occurs in an exon of the protein-coding gene (i.e., occurs a frameshift mutation), while this deletion may not have any effect if it is localized within the introns which are removed during RNA processing. A frameshift mutation will change the amino acids that are added to the nascent polypeptide chain during translation.

7 0

2 years ago

Select the correct answer from each drop-down menu.

4vir4ik [10]

Explanation:

Amylase is a digestive enzyme secreted and is responsible for breaking down <u>starch.</u>

Digestion describes the intake, chemical and physical breakdown, absorption of nutrients and excretion of food. Alpha amylase, an enzyme produced in the pancreas, is found in human saliva; it catalyzes the breakdown of starch into glucose

Further Explanation:

Food is chemically and mechanically broken down into into smaller particles. This begins in the mouth, where food is mechanically crushed by the teeth, and mixed with saliva to allow water based enzymes like lingual lipase and amylase to work;- it's then transported to the stomach via the esophagus.

Alpha amylase, an enzyme produced in the pancreas, is also found in human saliva; it catalyzes the hydrolysis, or breakdown of starch into glucose in the stomach as gastric amylase. Amylase acts on polysaccharides bonds at random points along the chain by splitting the α 1-4 glycosidic bonds.