What two macromolecules make up ribosomes?

What are some likely reasons a Cl (chloride) ion cannot pass through a sodium ion channel?

Which is the best description of the two organisms highlighted in pink? They are separated by two nodes. They share a recent common ancestor. They belong to the same species. They are ancestors of each other. Mark this and return

When ocean waves hit the beach, kinetic energy is stopped by the sand and rocks on the beach. The energy is then lost from the ocean. How does this example show the Law of Conservation of Energy?

Which best describes how an organism's niche is determined? A) An organism's habitat and inherited traits determine its niche. B) An organism's habitat and ability to reproduce determine its niche.

Although the brain's early development is in large part genetically directed, its structure is continually modified by environmental experiences and this modifiability is called

When do scientists consider a hypothesis valid? A. when the hypothesis is testable B. when the hypothesis is published in a scientific journal C. when more than one person supports the hypothesis D. when experimentation shows it to be true

In cherry trees, white flowers are dominant over pink flowers. cross a homozygous dominant tree with a purebred recessive tree. what is the phenotypic ratio of the offspring? a. 4 ww b. 4 white selected: c. 4 ww d. 4 pink

What happens to Earth when it is farthest from the sun? A) It moves fastest, B) It stops rotating, C) It moves slowest. D) It stops revolving

Deer ticks are responsible for spreading Lyme disease. This organism, which feeds on the blood of warm-blooded organisms like mice, deer, and humans, is best described as a (1) predator (3) parasite (2) scavenger (4) host

Primary succession would occur in which one of the following