Which of the following statement is incorrect?

a) In DNA double helix, the two strands of DNA are bound with each other with the bases

b) Adenine always pairs with thymine

c) Guanine always pairs with cytosine

d) none of the above

Arrange these words in a correct order: community, cell, organism, organ system, biosphere, molecule, tissue, organelle, population, organ, ecosystem

What process combines lighter elements to produce heavier elements, and occurs in the core of the Sun and other stars, producing ultraviolet and visible light?

Animal waste decay by the action of bacteria witch create

In his breeding experiments, how did Mendel know which traits came from which pair of plants?

Which condition is required for viruses to reproduce? A they must enter another virus structure B They must enter the cell of another organism C they must come in contact with water or D they must encounter a virus with genetic material different

Alice takes lithium to control symptoms of her mental disorder. alice is most likely suffering from

Which two species are most closely related? A) Dog and rabbit B) Human and dolphin C) Wolf and dog D) Giraffe and horse

Changes in chromosome number are usually the result of what?

Raccoons eat a variety of foods and can live in a variety of habitats, including locations near humans. Tiger salamanders eat an abundance of worms and insects and require wetland habitats so they do not dry out.

What is some conclusive evidence that organisms of two different species share a common ancestor?