First SI Session BIOL 212 - Howell What is the difference between a dog and a marine biologist? First SI Session BIOL 212 - Howell Si website - resources page - email updates Tuesday 7:10 Gilman 2104 Thursday 4:10 Gilman 2104 Sunday 5:10 Gilman 2354

One wags its tail and the other tags a whale!

Everybody say… NAME MAJOR YEAR IF YOU COULD BE ANY KIND OF DOG, WHAT WOULD YOU BE AND WHY?

INVADE THE ISLAND EVERY TEAM GETS 15 PIRATE SHIPS IF YOU GET THE QUESTION RIGHT, YOU CAN BOMB THE OTHER TEAMS SHIPS AND ERASE ONE IF YOU GET THE QUESTION WRONG, YOU ACCIDENTALLY BOMB YOUR OWN SHIP AND HAVE TO ERASE ONE FROM YOUR SIDE IF YOU GET THE BONUS QUESTION RIGHT, YOU RECEIVE 57 EXTRA PIRATES FOR YOUR INVASION THE GOAL IS HAVE AS MANY PIRATES AND PIRATE SHIPS AT THE END OF THE GAME TO INVADE THE ISLAND WITH GOOD LUCK AND AARRGGG YOU READY?!

Question 1 According to the scientific theory, how old is the universe?

Question 1 Answer 13.7 billion years old

Question 2 Where do new cells come from?

Question 2 Answer Pre-existing cells by cell division

Question 3 Prokaryotes are sometimes bacteria, what are 3 things bacteria contain? (there are more than 3)

Question 3 answer Plasma membrane Single chromosome Ribosomes Stiff cell wall Few organelles

Question 4 What is the importance of having compartmentalized organelles, like eukaryotic cells?

Question 4 answer Separation of incompatible chemical reactions Increased efficiency of chemical reactions

Question 5 The nucleus contains the cells DNA and is surrounded by a double membrane ______________ _______ that is studded with __________.

Question 5 answer Nuclear envelope Pores

Question 6 True or False: The cytoskeleton is a static structure and does not move to support cell structure.

Question 6 answer False: it is dynamic to help cell movement

Question 7 What are the three types of cytoskeletal elements? BONUS: Which one is the smallest?

Question 7 answer Microtubules Intermediate filaments Actin filaments Actin is the smallest

Question 8 Protein ______ can walk on microtubules to transport materials around the cell.

Question 8 answer Kinesin – it requires ATP to move

Question 9 True or False: Cilia and flagella contain microtubules and are involved in cell movement.

Question 9 answer True

Question 10 What is the internal structure of a Flagella called? BONUS: what are the critical motor elements called?

Question 10 answer Axoneme Critical motor elements are dynein arms which are the reason for a swimming motion

Question 11 Muscle movement are due to two major filaments, what are they?

Question 11 answer Actin and myosin

Question 12 What do I mean when I say the ‘secretory pathway’?

Question 12 answer Secretory pathway refers to the pathway proteins move from inside the cell to outside the cell and to different organelles.

Question 13 Proteins intended for secretion from the cell are synthesized on ribosomes on the ____________.

Question 13 answer Rough ER. It is the entry to the secretory pathway.

Question 14 What was the reason behind the Pulse- Chase Experiment?

Question 14 answer To track where proteins go from synthesization to organelles.

Question 15 Why doesn’t the purple line go to zero after 7 seconds?

Question 15 answer There are still proteins that have not been synthesized/never will be

Question 16 Why would you find a large population of proteins in a lysosome?

Question 16 answer Lysosomes digest materials brought into the cell and it needs certain proteins to digest certain materials.

Question 17 The ______ _________ guides the ribosome with the mRNA to the ER.

Question 17 answer Signal Sequence

Question 18 How are proteins moved from the ER to the golgi?

Question 18 answer By vesicles

Question 19 What was the example used by Dr. Howell to describe how proteins know which vesicle to go to?

Question 19 answer Train ticket

Will you come to SI again? Question 20 Will you come to SI again?

Question 20 answer YES! The next one is this Thursday at 4:10 in the same room! Tell your friends!