A vaccine is made from *

a. proteins produced by the bodys immune system

b. a weakened or dead form of a pathogen

c. body cells that are immune to a disease

d. an antibiotic used to treat an infectious disease

Identify whether each method of membrane transport is passive or active by dragging the label to the correct box.

What are the characteristics of loamy sand?

The HIV virus and the T2 bacteriophage virus HAVE this in common: A they both have RNA B they both have a membrane coat C they both have DNA D they both contain genetic material

The diamond-shaped region between the lower appendages is called the

Angelina observes that her gardener cuts the tips of her ornamental plants at regular intervals of about 10-15 days. When she asks him why he does this, he tells her that this allows the tree to grow faster and bushier.

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.