10TH GRADE QUIZ

Bacteria can be classified as gram positive and gram negative thanks to the presence of ____________ in their cell walls.

• chitin

• cellulose

• peptidoglycan

• plasma

Which of the following diagrams represents the structure of a gram negative bacterium?

• 
• 

These bacteria are

• gram positive

• gram negative

• indeterminate

• gram positive and gram negative

cephalosporins are antibiotics used to fight gram negative bacteria, and Penicillin helps to treat gram positive bacteria. Which one would you recomend to treat an infection caused by the bacteria in the picture?

• cephalosporins

• penicillin

The following statements are similarities between bacteria and archae except

• both are prokaryote

• they don´t share the same level of connection as multicellular organisms

• both have plasmids

• both have peptidoglycan in their cell walls

Which man is the father of the child?

• dad 1

• dad 2

• dad 3

Based on the sequences below, which enzyme produces a blunt end (no unpaired bases)? The cut site is indicated by the*

• 
• 
• 
• 

Which technique is used to study individual genes and genetically engineered organisms, and in the treatment of certain diseases?

• gel electrophoresis

• recombinant DNA

• DNA sequencing

• Gene cloning

The main goal of the human genome project is to

• Identify the unique parts of each person´s DNA

• Identify genes responsible for human behavior

• Identify genes responsible for human diseases

• Determine the entire sequence of human DNA

What controls the replication process in PCR is

• the polymerase

• the nucleotides

• the thermal cycler

• the primers