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Iteru [2.4K]
4 years ago
9

During which geologic period did plants and animals fi rst appear in land environments?

Biology
1 answer:
Verdich [7]4 years ago
6 0
They appeared in the Tertiary/Quaternary and Cretaceous period.
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Which organism is most closely related to the Green Anole?
Taya2010 [7]

Answer:

it would be B

Explanation:

6 0
3 years ago
Please answer I really need help
vampirchik [111]

Answer:

Carbohydrates - monosaccharides

Proteins - amino acids

Nucleic acids - nucleotides

Lipids - fatty acids (hydrocarbon chains)

Explanation:

There are four major biological molecules called biomolecules in nature namely; carbohydrates, proteins, nucleic acids and lipids. These four molecules form the bedrock upon which life is built. The biomolecules mentioned above are POLYMERS formed as a result of the combination of two or more simpler molecules called MONOMERS in a process called CONDENSATION.

The monomer of each polymeric biomolecule is as follows;

Carbohydrates - monosaccharides

Proteins - amino acids

Nucleic acids - nucleotides

Lipids - fatty acids (hydrocarbon chains)

3 0
3 years ago
In a certain plant rough seeds ( R) are dominant and smooth seeds (r) are recessive. Two plants with a genotype Rr are crossed.
ladessa [460]
The genotype that will be given is going to big r and small r because the cross will be the same.
5 0
3 years ago
A 50 year-old patient has been diagnosed with elevated blood pressure. the patient does not have a history of hypertension. what
IgorLugansk [536]
<span>When there is a patient who presents wtih elevated blood pressure, but no history of hypertension, the correct ICD-10-CM code to report would be R03.0 as in the example of a 50 year old patient that had been diagnosed with high blood pressure but with no prior history or diagnosis of hypertension.</span>
7 0
3 years ago
Histones are essentially identical in sequence/structure in all eukaryotic organisms from yeast to plants to animals. What does
xxTIMURxx [149]

Answer:

It indicates that core histone genes were present in the last common ancestor of yeasts, plants, and animals

Explanation:

Histones are highly basic proteins that can strongly interact with DNA, which is packaged into nucleosomes, the basic structural and functional unit of chromatin. Each nucleosome is composed of approximately 147 base pairs of DNA wrapped around a core of eight histone proteins (two copies of four types of histones H3, H4, H2A, H2B). These core histones are evolutionarily conserved across eukaryotic kingdoms in terms of sequence and structure. Therefore, DNA-packaging into nucleosomes is considered a constraint for the evolution of core histones. Moreover, the presence of conserved core histones in eukaryotic kingdoms (e.g., yeast, plant, and animal kingdoms) is strong evidence that histone-mediated DNA packaging was presumably present in the last common ancestor of eukaryotic genomes.

5 0
3 years ago
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