The invention of which instrument allowed scientists to discover cells?

a. eyeglasses

b. magnifying glass

c. microscope

d. telescope

Cancer is a disease that usually results when A. a person has limited exposure to sunlight. B. mutations cause a person's body cells to divide uncontrollably. C. a person has a severe allergic reaction. D.

James wants to create a self-sustaining ecosystem, or vivarium. Which method would most likely result in an ecosystem that is viable for the longest amount of time with no additional care?

Complete the sentences with the correct terms. If one plant cell sends a signal to another plant cell by passing a small molecule to that cell through the plasmodesmata, this would be referred to as signaling.

What are the most common psychotherapeutic drugs? a. antidepressants and tranquilizers b. some forms of amphetamines c. controlled forms of tetrahydrocannabinol d. rohypnol or ghb?

How many chromosomes would a typical human cell have after mitosis but before cytokinesis?

What does the genome of a transformed e coli cell contain that a normal e coli cell does not contain?

All plant and animal groups existing together and the physical factors with which they interact compose a (n) a. climate. b. kingdom. c. ecosystem. d. weather pattern.

Four strategies have been proposed to increase the world's food supply in places where populations are underfed

Mark observes that when his father throws a basketball, it bounces higher than when Mark throws the same ball. He wonders, "Is this because my dad is much taller than me?" What can Mark do to best answer his question? Shop for another basketball.

In angiosperms, flowers are adaptations for reproduction. Which of the following does NOT usually describe flowers that are pollinated by animals? A. They are tiny. B. They pollinate more efficiently than wind-pollinated plants. C.