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Tasya [4]
3 years ago
13

How are organisms classified into domains? ​

Biology
1 answer:
katovenus [111]3 years ago
6 0
Organisms are classified into domains and kingdoms based on their cell type, their ability to make food, and the number of cells in their bodies.

Hope this helped :)
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When examining cells in the laboratory, you notice that a particular cell has half as much DNA as the surrounding cells. It appe
kow [346]

Answer:

G1 checkpoint

Explanation:

The cell cycle consists of the series of activities that occurs from the replication of DNA to the actual division of the cell in an organism's cell. However, the cell has been internally programmed to ensure that all conditions are in place/favorable before allowing progression into the next stage of the cell cycle. This internally controlled mechanism ia called CHECKPOINTS. This checkpoint occurs at three main stages of the cell cycle;

after G1 phase, G2 phase and during M phase.

In the G1 checkpoint, the cell ensures that the cell is in the right shape to proceed into the Synthesis phase of the cell cycle where it will double it's DNA. The checkpoint checks majorly for damage or change to the DNA before replicating it. If any error is found, that cell is halted and prevented from proceeding to the S-phase of the cell cycle.

This is the case in the question, the cell has been halted and prevented from entering the S-phase. Hence, its DNA is still the same as it started. However, the DNA of the cells surrounding it has been doubled as they have undergone DNA replication during S-phase.

4 0
3 years ago
n garden peas, the allele for tall plants is dominant over the allele for short plants. Suppose that a true-breeding tall plant
muminat

Answer:

25% of the heterozygous cross are short, and the offspring of a homozygous dominant and homozygous recessive pea plant will always display the dominant trait (phenotype), because they are heterozygous.

Explanation:

In this explanation, I'm assuming that the allele "T" for tall plants is dominant to the allele "t" for short plants, like in Gregor Mendel's pea plant experiment.

A homozygous tall pea plant will have the genotype "TT" and a homozygous short plant will have the genotype "tt" because homozygous means that both alleles are identical. Since "T" is dominant over "t", any plant with at least one "T" allele will be tall (the dominant trait), regardless of what the other allele is. Let's look at a Punnett square for this cross:

Explanation:

3 0
3 years ago
Asthenosphere is the
____ [38]

Answer:

solid layer of the mantle below the lithosphere

7 0
3 years ago
4. A bacterial cell is prokaryotic, while the protist, Euglena, is eukaryotic. Which structure is present
dmitriy555 [2]

Answer:

There are a couple different possible answers, since there are multiple different structures that are present in both types of cells. So you have to make the choice of what to put.

The structures that prokaryotic and eukaryotic cells have in common are: plasma membrane, ribosomes,  and cytoplasm

3 0
2 years ago
Read 2 more answers
What are four elements that make up over 95% of the body in most organisms
natima [27]
Oxygen<span>, </span>sulfur<span>, </span>nitrogen<span>, and </span>hydrogen<span>.

</span>
5 0
3 years ago
Read 2 more answers
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