Anyone can answer these questions?!

Biology

1 answer:

Usimov [2.4K]3 years ago

5 0

Answer:

4- C or D; 5- A3

Explanation:

Animals that fly adapt to their lifestyle of soaring through the air, but sea creatures adapt to their gills because they need them to breathe oxygen in the water (one of these two). i hope this helps you tho.

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The type of RNA that delivers amino acids to the ribosome during protein synthesis is tRNA.a) trueb) false

DENIUS [597]

Answer:

A). True

Explanation:

tRNA, which means transfer RNA is one of the three types of RNA known in nature. The tRNA is found in the ribosome, where it plays a pivotal role in protein synthesis (translation). Transfer RNA is the RNA responsible for reading the nucleotides in the mRNA codon and carrying the amino acid that corresponds those codons to the ribosome.

The tRNA has a 3-dimensional structure that allows it to carry anticodon that reads codon and also carry amino acids on opposite ends. Hence, according to this question, tRNA is a type of RNA that delivers amino acids to the ribosome during protein synthesis.

6 0

3 years ago

Meselson and Stahl used density labeling of DNA to show that DNA replication occurs via a semiconservative mechanism. In their e

cricket20 [7]

Answer:

The organism previously used 15N for replication so all the DNA molecules were of 15N15N type. Then the organism is shifted to a medium where only 14N is available for replication.
According to semi conservative mode of replication, a newly synthesised DNA molecule consists of one new strand and one parental strand. So after the first round of replication, All the 15N strands will synthesise new DNA strands using 14N resulting into intermediate 15N14N DNA molecules. Hence, only one band would be observed (15N14N) above the original 15N15N band since 15N14N has lighter isotope too so it will be lighter than 15N15N molecules and will lie above it.
After second round of replication, 15N strand from 15N14N would synthesise another 14N strand. 14N strand from 15N14N molecules will also synthesise another 14N strand. So now, 50% of the DNA molecules will be of 15N14N intermediate type and 50% of them will be of 14N14N type.Two bands will be observed above the original 15N15N band. One band of 15N14N molecules will be right above it and other band of 14N14N molecules will be even higher because it is the lightest band since it has only the lighter isotope of nitrogen.

8 0

3 years ago

There are twenty different types of _____________ which join together in differing sequences and numbers to form different prote

Alexxandr [17]

There are .................... of AMINO ACIDS which join together ........................
Amino acids are the building units of protein. There are basically twenty different types of amino acids which are divided into two classes of essential and non essential amino acids based on their requirements in human nutrition. These amino acids joined together in different manner to form different types of proteins.

7 0

3 years ago

Read 2 more answers

Animals and most microorganisms are classified as chemoorganoheterotrophs. The prefixes "chemo," "organo," and "hetero" refer to

7nadin3 [17]

Answer: Option A.

Electrons,carbon and energy.

Explanation:

Chemorganoheterotrophs are organisms that uses organic substrates to produce carbon needed for their growth and development. They derive their energy from oxidation and reduction of organic substances. The use the reduced carbon produced by autrotophs as as source of electrons, carbon and energy. Example is fungi that uses carbon as electron donor and source for carbon and energy.

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3 years ago

A group of ecosystems that have the same climate is called

AveGali [126]

Answer:

A biome is a group of ecosystems with the same climate

Explanation:

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3 years ago