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3 years ago

Do you think the wings of a Galapagos cormorant are vestigial structures? Explain your answer using evidence from the article.

Biology

2 answers:

lord [1]3 years ago

6 0

Answer:

Yes, the wings of the Galapagos cormorant are vestigial.

Explanation:

The Galapagos cormorant is also called the flightless cormorant is a cormorant exclusively found in the Galapagos Island. It is specific as it is the only cormorant that has lost the tendency to fly. The wings of the bird are about 1/3rd the size needed for a bird to fly. The breastbone keel, that is, the location where the birds’ accord the big muscles required for flight is also substantially diminished. The changes would have taken place generally due to mutation with time.

Archy [21]3 years ago

5 0

Yes, the wings are vestigial structures because they are still apart of the birds' bodies but they can't use them for flight. The article says it's because of a genetic mutation.

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Which of these is a characteristic of a monocot plant? A. two seed leaves B. leaf veins in a net pattern C. flower parts grouped

Zarrin [17]

B. leaf veins in a net pattern

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3 years ago

Metabolites are small molecules that:

Pavlova-9 [17]

Answer:

C) generally consist of 1,000 different substances

Explanation:

Metabolites are compounds, usually organic, that participate in the chemical reactions that take place at the cellular level. The set of these biochemical reactions, together with the intracellular physical-chemical processes, constitutes the cellular metabolism, the molecular basis of life. The metabolism includes the degradation of molecules for obtaining energy (catabolism) and the synthesis of molecules necessary for growth, reproduction and repair (anabolism).

The succession of metabolic reactions that transform a given initial substance into another is known as a metabolic pathway. The starting substance is known as a substrate or raw material. The final substance is usually known as the final product or metabolite (a metabolic pathway can generate several final products) and the intermediate substances as intermediate metabolites. An intermediate or final metabolite in one metabolic pathway may be the substrate in another, which makes the vast majority of metabolic pathways interconnected.

Metabolites can be classified into two large groups, primary and secondary. Primary metabolites are defined as those that are directly involved in the normal growth, development and reproduction of an organism with an important physiological function. On the contrary, secondary metabolites are not directly involved in these processes. The absence of a primary metabolite usually leads to immediate or short-term death while the absence of a secondary metabolite does not.

<em>According to the different types and diverse functions that fulfill there are an immense amount of metabolites</em>

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3 years ago

All the plants and animals in the world are made of

Oksi-84 [34.3K]

Answer:

made out of cellls

Explanation:

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3 years ago

Water has a density of 1 g/ml. What is the mass of the water if it fills a 10 ml container?

Lubov Fominskaja [6]

Answer:

mass= density * volume

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5 0

2 years ago

Boris Magasanik collected data on the proportion of each base in RNA from different species. To compare the relative amount of e

just olya [345]

Answer:

The nucleic acid is a macromolecule present in living systems in the form of either DNA or RNA, whose molecule consists of many nucleotides which are linked with each other to form long chains. The presence of DNA or RNA in an individual promotes continuity of life. The variability and complexity of nucleic acid are dependent on its constituent molecules as, sugar, a phosphate group, and a nitrogenous base. However, two monocyclic nitrogenous bases were classified purines (adenine:A, guanine:G) and pyrimidines (thymine:T, cytosine:C, and uracil:U).

In addition, RNA is a single-stranded structure which differs from DNA in two aspects, the sugar content of RNA is ribose, and pyrimidine base uracil replaces the thymine base of DNA. A ratio between two strands of DNA can be calculated by using Chargrff's rule which states that "DNA from any cell of all organisms possess a 1:1 ratio (base Pair Rule) of pyrimidine and purine bases'.

The purine to pyrimidine ratio in RNA with different bases is given below in the following table:

Presence of single strand in RNA does not follow chargaff's rule and alters the purine: pyrimidine ratio. The above ratio of each base in the given information is not equal, due to which the ratio of purines to pyrimidines is different. The ratio of DNA and RNA is not equal because DNA has its complementary DNA strand. However, bases in RNA might vary due to its single-strandedness property, but its ratio is dependent on the species.

Therefore, it can be concluded that the ratio of purines to pyrimidines is dependent on the species due to its genetic makeup. Hence, option (c) is correct.

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3 years ago