Biology 2nd Sem Final Assessment review S3

This is the practice of producing a genetically identical cell or organism

• Cloning

• Gel Electrophoresis

• Genetic Engineering

• DNA Fingerprinting

A lab technique used in crime fighting to prove a suspects innocence or guilt is known as:

• genetic engineering
• PCR
• electrophoresis
• gene therapy

What is recombinant DNA?

• Adding DNA from one organism into the DNA of another
• DNA which has been changed over generations by natural selection
• DNA that causes genetic disorders
• DNA that has been sequenced

The process that has been used for centruries to create purebred animals such as black labs is called

• recombinant DNA

• cloning

• selective breeding

___________ changes the genetic material of a living organism.

• Crossbreeding 
• Genetic Modification 
• Bioremediation
• Genome

Which of the following characteristics is often genetically engineered into crop plants?

• Resistance to herbicides

• Improved appearance

• Shorter ripening times

• Thicker stems

Which of these is NOT a use for DNA Fingerprinting?

• Identifying the person whose DNA was left at a crime scene

• Determining the father of a child

• Finding the likelihood of inheriting a genetic disorder

• Figuring out which species are more closely related

A scientist was studying a population of fish in a pond over a period of 10 years. He observed that

the population increased each year for 3 years, and then remained nearly constant for the rest of

the study. The best explanation for this observation is that the population had

• stopped reproducing

• reached carrying capacity

• mutated into a different species

• run out of food and all died

In a large Maine forest with many animals and lots of space, there are only a small number of bears. Which of these most likely limits the population of bears in the forest?

• Supply of food

• Space

• Cloud cover in the atmosphere

• Types of trees in the area

Food webs such as the one shown were first used in 1927 by the animal ecologist Charles Elton. The food web below represents the feeding relationships among organisms in an Alaskan ecosystem. An environmental change that removed which of these organisms from the ecosystem would cause the most instability in the ecosystem?

• Auklets

• Foxes

• Salmon

• Zooplankton