Wednesday, January 27, 2021

Day 41, Back to Genetics, Mendel and the Gene Idea, pp. 247

 Mendel (18 minutes)


Mendel (15 minutes)


Mendel (15 minutes)





Quiz -- complete this quiz online and tell me the result


Day 40, shorter, realized have to get in more from pages 540 to 542

 Symbiosis (9 minutes)

primary, secondary, opportunistic infections (4 minutes)


Read this thoroughly and remember it is Koch's postulates, a method of determining pathogen infection

bioremediation (2 minutes)


extra and longer video if you want to watch it on bioremediation (12 minutes)


Quiz:


Briefly define:


1.  symbiois


2.  host


3.  mutualism


4.  commensalism



5.  parasitism



6  What does it mean if a prokaryote is pathogenic?


7.  Of endotoxins and exotoxins, which are proteins secreted by the bacteria?  Which are chemicals that are part of the bacteria themselves?



Sunday, January 17, 2021

Day 39, pp. 537 -- 542 (this runs extra time, so allow more time for it)

agrobacterium (5 minutes)

salmonella (6 minute)

E. coli (5 minutes)

E. coli (3 minutes)

myxobacteria (2 minutes)

myxobacteria (2 minutes)

bdellovibrios (1 minute)

bdellovibrios (1 minute)

bdellovibrios (3 minutes, start at minute 2)

h. pylori (3 minutes)

chlamydia (3 minutes)

lyme spirochetes (3 minutes)

Lyme (5 minutes)


TB (10 minutes) (this has a lot, maybe more than you need right now)

leprosy (4 minutes)

cyanobacteria (3 minutes)

Quiz:


1.  Using the Campbell-Reece text page 536:

a.  What are the three domains?

b.  What are the groups under the Domain Bacteria?

c.  What are the groups under the Domain Arhaea?


Day 38, pp. 532 -- 537

 autotrophs and heterotrophs (7 minutes)


frog decline (3 minutes)

more on that (4 minutes)


saprotrophs (2 minutes)


nitrogen fixation (4 minutes)

aerobic and anaerobic (11 minutes)

extremophiles, archaea (7 minutes)





Quiz:


1.  What is the difference between an autotroph and a heterotroph -- and give a couple examples of each.


2.  Why are peas, beans, and legumes in general important for all life?


3.  Explain the variations with oxygen use in biology, about one paragraph.



4.  What are methanogens, halophiles, thermophiles?


Saturday, January 16, 2021

Day 37, pp. 531--532

 Transformation, Conjugation, transduction, transposition, pretty complex (4 minutes)


bacteria, amoeba sisters (9 minutes)


endospores (4 minutes)


endospores (4 minutes)


antibiotics (4 minutes), very good


resistance (5 minutes)


antibiotics in nature (5 minutes)






Quiz


1.  Draw a little, appropriate picture for each

a.  transformation


b.  conjugation


c.  transduction


2.  What does sporulation protect against, and what does it create (one word)?


3.  Explain different ways antibiotics work.



Friday, January 1, 2021

Day 36, Chapter 27, pp. 526 -- 531

 epigenetics (extra)


So, we've jumping forward again to get out of microbiology and genetics.  Will go back to genetics after this chapter.  Skipping back and forth because there is so much with genetics and DNA that you can get lost in it all and start mixing things up.

Prokaryotes -- archaea and bacteria (you may have watched this already)

bacteria shapes

prokaryotic cell walls and gram negative and positive

bacteria slime

bacteria motion and flagella and chemotaxis

taxis

spirochete motion

spirochete (includes syphilis picture)


Quiz:


1.  Use these sources to draw and label bacteria shapes;  look up the diseases caused by the bacteria in the first source.

detailed chart

simple

photo


last

binary fission


cool plasmid replication


complex plasmid video, how we make insulin



2.  What are the two domains that contain prokaryotes?  Which domain does not?


3.  Which have a thicker cell wall, gram positive or gram negative bacteria?  How do you tell which is which?


4.  Prokaryotes don't have a true n_________ enclosed with a n________ membrane.