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Flashcards in Lecture 1 Deck (20):
1

What are the smallest bacteria?

How big are they, and what is unique about them?

Mycoplasma (different than mycobacteria). Less than 1 µm. No cells walls.

2

Dimorphic Fungus definition

 

Can grow as a yeast form and sometimes as a mold form

3

When do many pathogenic diamorphic fungi change thier growth form. 

Mold form in the environment, yeast form when infecting an animal (can confuse immune system by changing forms). Change of forms is sometimes temperature dependent.

4

Viruses are:

They affect:

Nonliving agents that require living cells to replicate.

They affect every type of organisms. 

bacteria (baceriophage)

animals

plants

fungi

ect.

5

Parasitic worm presence is often detected by:

examination of samples of peripheral blood or fecal specimens in a microbiology lab

6

Eukaryotic cell Structure:

Nucleus

Double nuclear envelop and nuclear pores

seperates transcription from translation

7

Eukaryotic cell Structure:

Endoplasmic reticulum

Has both rough (RER) and smooth (SER) portions

8

Eukaryotic cell Structure:

Golgi

modifies membrane and secreted proteins and directs proteins to their final destinations

9

Eukaryotic cell Structure:

Peroxisomes

Most secretion involves:

contain various oxidases and catalase, and various transport and secretory vesicles & vacuoles. Secretion involves vesicular transport and exocytosis

10

Endocytosis & phagocytosis

Vesicular uptake of large molecules & particles 

11

Eukaryotic cell Structure:

Lysosomes

breakdown macromolecules. They contain internal acidic pH and acid hydrolases

12

Eukaryotic cell Structure:

Where do biochemical pathways occur?

Glycolysis, pentose phosphate pathway, TCA, ETC, oxidative phosphorylation

Glycolysis, pentose phosphate pathway -Cytoplasmic matrix

TCA- mitochondrial matrix

ETC, oxidative phosphorylation: Inner mitochondrial membrane

13

Eukaryotic cell Structure:

Mitochondria

14

Eukaryotic ribosomes:

subunits?

 

80S when translating an mRNA

formed of 40S and 60S subunits

40S unit has important 18S rRNA

 

15

16

number of microtubules in a microtubule core of flagella and cilia

9x2 +2

17

How do eukaryotic flagella and cilia move?

They move in an undulating (wavelike) motion due to a complex microtubule core and a ciliary ATPase called ciliary dynein (motor protein).

ATP provides the energy

18

19

Fungal cell walls made of:

Algae and plant cell walls made of:

Fungal:  Chitin (complex carbohydrate) and sometimes cellulose

Plants and algae: cellulose (polymer of glucose)

20

Eukaryotic Cell membrane transport mechanisms;

simple diffusion, facilitated transport, active transport, ion channels, vesicular uptake (endocytosis)

 

SLIDE 20 of LEC 1 Part C