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yawa3891 [41]
3 years ago
14

Through which blood vessels does oxygenated blood flow to cardiac muscle of the heart?

Biology
1 answer:
STatiana [176]3 years ago
4 0
The pulmonary veins
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Which action would best demonstrate that a scientist is being creative?
xxMikexx [17]

Answer:

taking a closer look at the natural world

Explanation:

using prior knowledge is basic common sense. so no.

requiring evidence and thinking logically is following a rule. so no.

following strict rules when using human test subjects. right off the bat, "strict rules" is an immediate no.

taking a closer look at the natural world. that's creative because they look for the answer around them.

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3 years ago
In 1953, the scientists James Watson and Francis Crick published their landmark findings on the structure of DNA. Watson and Cri
Digiron [165]

Answer:

The correct selection of answers to the question: Identify the pieces of evidence describing the features of DNA that Watson and Crick used to determine the structure of DNA, would be:

C: The two chains are parallel, both running in a 5´ to 3´ direction

D: A purine base forms hydrogen bonds to pair with a pyrimidine base located on the opposite DNA strand. Specifically, A pairs with T, and C pairs with G.

E: The sugar-phosphate backbones of each DNA helix run antiparallel to one another

F: The diameter of the DNA doube helix is 2 nm, with each purine-pyrimidine base pair spanning an equivalent distance between the two chains.

Explanation:

Although Watson´s and Crick´s research, and model of the DNA helix, became the breakthrough for science, as it visually presented the now known characteristics of DNA, this research was possible due to the way that these two researchers used previous information found by other scientist on the molecule, to finally build their model. All of the options that were selected were part of the research of several scientis, including Mendel, Rosalin Franklin, Linus Pauling, Maurice Wilkins, Oswald Avery and many others, who worked on different aspects of specimens and their specific characteristics, and which led them to discover that organisms possessed DNA, that this was the unit of information that directed all functions in living cells and how this DNA helix was chemically built to understand how it worked, and why it worked the way it did.

8 0
3 years ago
Helpppppp !!!!!!!!!!​
Kruka [31]
I think it’s either the first or last one
3 0
4 years ago
Identify the types of point mutations depicted.
djverab [1.8K]

Answer: a. missense mutation

Explanation:

8 0
3 years ago
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Difference between mushroom, dodder and pitcher plant.
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Answer:

Explanation:

Mushroom is a fungus

Dodder is an invasive species

pitcher plant is a carnivorous plant

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3 years ago
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