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Nata [24]
3 years ago
12

Indicate whether the following statements are true or false.

Biology
1 answer:
Neporo4naja [7]3 years ago
3 0

Answer:

1) True

2) True

3) False

4) True

Explanation:

1) True. Nucleotides are the monomers of the polymeric chain. DNA is formed by two complementary polymeric strands.

2) True. Each DNA strand has a polarity or directionality and it is determined by the direction that nucleotides are pointing. Each nucleotide will have a 5' end phosphate on one side and a 3' hydroxyl end on the other. One strand will have 5'-3' direction and the complementary strand 3'-5'.

3) False. There are four different nucleotides that can be incorporated into a DNA strand, these are: Cytosine, Guanine, Adenine and Thymine.

4) True. Hydrogen bonds between Cytosine-Guanine (C-G) and Adenine-Thymine (A-T) in different strands hold the complementary DNA chains together.

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Suppose that you could designan RNA polymerase that would transcibe
lozanna [386]

Answer:

No it would not be useful for cell.

Explanation:

RNA polymerase uses only one strand of DNA which is called the template strand for the synthesis of mRNA. The other strand which is not used to make mRNA is called the coding strand.

If an RNA polymerase is designed which transcribe both the strand than two different strands of mRNA will be generated that will have different nucleotide sequences and will code for different proteins. So one strands will generate a protein which have different amino acids sequence that will complicate the overall process for the cell.

Another problem is if two RNA strands are formed then they can form a double helix and the ribosome might not be able to bind on them and translation might stop. Therefore it would not be useful for cell.

4 0
3 years ago
What biomes spans the largest annual mean temperature range
OlgaM077 [116]

Answer: Desert spans the annual mean temperature range.

Explanation:

Biomes are large ecological community of plant and animal on the earth surface that have characteristics for the environment they live in. A desert is an example of biomes. It is a barren area of land where there is high temperature and low precipitation (rainfall). It is a place where living conditions is difficult. Lact of vegetation exposed the areato direct sunlight and there is increased temperature. Desert are formed by weathering process I.e the breakdown of rocks into smaller particles through the activities of some agent like water or wind.

4 0
3 years ago
What is a primary reason why a three-domain taxonomic scheme has been adopted over the previous five-kingdom taxonomic scheme?
Gre4nikov [31]

Answer: due to a bacteria that has its own special property's which is  Archaea  

Explanation: because of the bacteria being able to live in such extreme temperature habitat  its been given its own domain

6 0
3 years ago
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Rom4ik [11]
As a result Four haploid cells are produced
8 0
3 years ago
1)Which of the following is a source of genetic variation
Svetllana [295]

The answer is; B

Mutations change the order of nucleotide and therefore affects codons that code for proteins. A different protein is thus produced from the wild type hence creating variations.  Genetic shuffling in sexual reproduction, also called gene recombination occurs during meiosis and also when different organisms exchange genetic material such as in bacteria.  

6 0
3 years ago
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