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tensa zangetsu [6.8K]
3 years ago
8

What is a double helix

Biology
2 answers:
KengaRu [80]3 years ago
6 0
A double helix is <span>a pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule. or in other words a double spiral.</span>
xxMikexx [17]3 years ago
3 0
Two strands twisting around each other.
This is typically used to describe the structure of DNA.
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bones in different vertebrates are if they have the same evolutionary origin but now differ in structure and function.
larisa86 [58]

Answer:

homologous structures

Explanation:

something like bat wings and human hands

they evolved from a common ancestor, but are now different and used differently

4 0
1 year ago
Which of these shows the greatest degree of hierarchical structural organization?
rosijanka [135]

Answer:

D- Multicellular life

Explanation:

Multicellular organisms are those organisms composed of two or more cells, these species include most fungi, animals and plants. On the other hand, unicellular organisms include bacteria and archaea (i.e., prokaryotes), as well as unicellular eukaryotic species (e.g., protists). Multicellular organisms exhibit a higher organizational level compared to unicellular organisms because in these organisms cells are organized into successive hierarchical levels in order to carry out diverse functions (i.e., tissues, organs, organ systems, etc).

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3 years ago
Thomas was interested in how the disruption of rock layers can be used to find a rock’s age. Which of the following are examples
katovenus [111]

Answer:

igneous intrusion, extrusion, faults

Explanation:

Folding, tilting, faults, igneous intrusion, extrusion, and unconformities all disturb rock layers

britannica quiziz

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2 years ago
Which reaction happens faster A. with enzymes or B. without enzymes
Yuliya22 [10]

Answer:

A. with enzymes

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2 years ago
A scientist observes a population crash among eagles within an island ecosystem. Which event might have led to such a crash?
arlik [135]

Answer:

The closing of a dam caused the island to flood.

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A population crash is a sudden decline in the numbers of individual members in a population, species or group of organisms. This can be caused by disease, environmental stress (such as pollution), or when its numbers exceed the carrying capacity of its habitat.

Of the four options, the one that would result in the destruction of the habitat and ecosystem which supports the population of the eagle would be flooding of the island due to the closing of a dam.

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