1. Describe the structure and function of each of the three types of RNA.

Biology

1 answer:

Ket [755]3 years ago

6 0

Answer:

mRNA - Messenger RNA: Encodes amino acid sequence of a polypeptide.

tRNA - Transfer RNA: Brings amino acids to ribosomes during translation.

rRNA - Ribosomal RNA: With ribosomal proteins, makes up the ribosomes, the organelles that translate the mRNA.

Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis. Transcription takes place in two broad steps. First, pre-messenger RNA is formed, with the involvement of RNA polymerase enzymes.

During translation, which is the second major step in gene expression, the mRNA is "read" according to the genetic code, which relates the DNA sequence to the amino acid sequence in proteins. Each group of three bases in mRNA constitutes a codon, and each codon specifies a particular amino acid (hence, it is a triplet code). The mRNA sequence is thus used as a template to assemble—in order—the chain of amino acids that form a protein.

Explanation:

You might be interested in

Please I need help with my homework I have to turn it in tomorrow morning

Sophie [7]

Answer:

Some factors that may cause a decrease in population size:

- a high mortality rate due to an infectious disease

- a low birth rate

- a high mortality rate due to interspecific competence

- a high emigration rate

Explanation:

In biology, population size (N) refers to the total number of individuals in a given population. The four main factors that affect population size are birthrate (natality), death rate, immigration rate (i.e., the number of individuals of a given species that move into a population), and emigration rate (i.e., the number of individuals of a given species that move out of a population). Both birthrate and immigration are known to increase N, while death rate and emigration are rates known to decrease this value.

6 0

3 years ago

Scientists have discovered that the inner core of Earth is a solid while the outer core is a liquid. What is the cause of this o

coldgirl [10]

That it’s rock solid inside but outer core is liquid ?

4 0

3 years ago

Carrying capacity is _____.

Dominik [7]

The answer is d ...the number of organisms an ecosystem can support

4 0

3 years ago

Read 2 more answers

3 Peroxisomes are cellular organelles: A. with their own genome B. present only in protists C. without membrane OR D. collaborat

VLD [36.1K]

Answer:

E.site of some oxidation reactions

7 0

3 years ago

Which of the following is typically associated with a large amount of organic material in a water supply? Lower turbidity Higher

Jet001 [13]

Fecal coliform. Fecal matter is an organic material which can be introduced to bodies of water by animals in lakes and streams. Organic material actually lowers dissolved oxygen in water.

5 0

4 years ago