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2 years ago

How do you do this biology work

Biology

1 answer:

wolverine [178]2 years ago

7 0

Answer:

22 pairs of autosomes, 1 pair of sex chromosomes, I notice that the X and Y chromosomes are sex chromosomes and that they are different in length and size., The sex of this organism is male, as the genotype XY can only mean a male gender; female gender is denoted by the genotype XX., You didn't put in Karyotype A., The special circumstance is with group 21 of chromosomes. There are 3 instead of 2 in that group., This circumstance results in a condition known as trisomy 21, or Down Syndrome. Down syndrome causes a distinct facial appearance, intellectual disability, developmental delays, and may be associated with thyroid or heart disease. , Name the karyotype "Down Syndrome Karyotype?" (I'm not sure on the last one)

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Which organism would most likely be found at the top of a food pyramid? A. shrimp B. barracuda C. kelp D. clams

kumpel [21]

B. barracuda. hope it helps

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3 years ago

What are histones, and how are they arranged in nucleosomes? Drag the terms on the left to the appropriate blanks on the right t

Eva8 [605]

Answer:

1) c. five

2) a. lysine and arginine

3) g. two

4) d. four

Explanation:

A nucleotide can be defined as an organic molecule which forms the building block of nucleic acid such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

Basically, nucleotide comprises of the following parts;

1. Nitrogenous base: this includes adenine (A), thymine (T), guanine (G), and cytosine (C) which are mainly found in the DNA while adenine (A), guanine (G), uracil (U) and cytosine (C) are found in the RNA.

2. A phosphate group.

3. A penrose sugar: it is either deoxyribose in DNA or ribose in RNA.

The two parts or chemical components of a nucleotide which do not change throughout the structure of DNA are;

I. Five-Carbon Sugar also known as deoxyribose and it has hydrogen on its second carbon.

II. Phosphate: this is the structural backbone that provides support to DNA.

Histones are a group of highly basic proteins that are mainly associated with deoxyribonucleic acid (DNA) in the nucleus of a living organism and then condense it to chromatin.

Histones include five main classes of relatively small basic proteins containing relatively large amounts of lysine and arginine. Nucleosomes are made of two each of four types of histones.

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3 years ago

What type of organisms was most likely feeding on this sample ?

jek_recluse [69]

I think Number C is right because Since the organism eukaryotic we can safely assume that it is neither an archaea nor a bacteria since they are both prokaryotes. Secondly, since it can not photosynthesize, it can't be a plant because all plants can photosynthesize. The presence of a cell wall tells us that it can't be an animal cell since they lack cell walls. Therefore, the organism found is a fungus-like protist. Fungi are prokaryotic cells that are unable to photosynthesize and they have cell walls.

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2 years ago

13. Which process requires cellular energy?

Aleks04 [339]

Answer:

Some such means, like diffusion and osmosis, are natural processes that require no expenditure of energy from the cell and are called passive transport. Other methods of transport do require cellular energy and are called active transport.

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3 years ago

Structural differences between prokaryotic and eukaryotic cells?

Nina [5.8K]

Prokaryotes do not have a nucleus, rather the DNA floats freely in the cytoplasm. Also, prokaryotes are much smaller than eukaryotes, and are typically bacteria or eubacteria.

Eukaryotic cells have membrane-bound organelles and nucleus, and are larger than prokaryotes. Some examples of eukaryotes are plant and animal cells. Hope this helps! :)

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2 years ago