To enter or leave a cell, substances must pass through

What is meant by osmosis?

Which of the following best compares the structure of carbohydrates and nucleic acids

When the seed of a tree first starts to grow, what would happen if the cells did not differentiate? All of the cells would be identical. The seed could form roots, but not leaves. The DNA would make new cells. Other cells would differentiate.

The graph below shows the mass of plants as succession progresses. What is the cause of the drop in the moss population?

Animals eat and digest food to obtain the energy available for life activities. Discuss energy use inanimals. In your discussion, be sure to:State one inference that can be made concerning a cell that has many of these organelles

Particles in a warmer substance have a. average kinetic energy than particles in the substance when it is cooler

All bacteria are classified as A. Eukaryotes. B. Prokaryotes. C. Archaea. D. Protista.

All the systems of the body work together to keep the internal environment of the body constant within certain limits. this process is called a. homeopathy. b. homoeostasis. c. positive feedback. d. neuroglia.

An experiment for a new asthma medication was set up into two groups. Group one was given the new drug for asthma, while group 2 was given a sugar pill. The sugar pill serves as a:

Linear equations 4x+17=-15 solve in one variable.