First use of fingerprinting in a criminal case.

Before 1800s

During the 1800s

1900-1988

1990-present

What is the purpose of the dense hairs around the flowers of the woolly lousewort? a. The dense hairs keep moisture off the flower. b. The dense hairs trap heat from the sun. c. The dense hairs protect the flower from caribou. d.

Which of the following describes how bacteria can receive or exchange genetic material? (A) In transformation, some bacteria pick up pieces of DNA from the environment.

In plants that undergo double fertilization, the structure that forms to nourish the seed is called

The main difference between a prokaryotic cell and a eukaryotic cell is

A scientist who studies earthquakes is a

Which planets have moons? A) Earth only B) Jovian only C) Terrestrial only D) Both Terrestrial and Jovian

Given that transcription - the production of mRNA - requires a DNA template, where do you think this process occurs in the cell?

Introduced species can threaten biodiversity because they a. cause desertification b. cause biological magnification c. crowd out native species d. reduce the amount of fertile land

Sirius B was an important star in ancient Egypt and was used to warn for floods on the Nile River. Is Sirius B brighter or dimmer than the Sun? * a) Brighter* b) Dimmer

How old am i and when is my next birthday?