What cellular structure must oxigen cross to get from the outside to the the inside of an animal cell?

1) the nucleus

2) the cytoplasm

3) the plasma membrane

4) the cell wall

Which statement is an example of the inter - dependence of organisms? (1) Owls hunt at night. (2) Ants get food from insects and protect insects from predators. (3) Ticks feed on the blood of animals and the ticks grow larger.

What does artifical selection mean

Which best describes a difference between transcription and DNA replication? - Apex learning

A Magellanic penguin is at an initial position of 4 m and waddles to a position of 8 m in 8 s. What is the penguin's average velocity?

Define density write the formula (from memory) and give two different units used to measure density

What are the warning signs of COPD?

Which describes the genetic code in a human? A. Different genetic codes appear in each different type of cell. B. Every human has the same exact genetic code. C. Genetic codes change frequently in reaction to external factors. D.

Over time, natural selection results in species that are what?

With of the following is not an energy source a) monosaccharides B) polysaccharides C) vitamins D) lipids

Scientists evalute if the data fits the hypothesis in this stage of the scientific method: 1 > Hypothesis 2> Observation 3> Experimentation 4> Conclusion