20

Question 1

Alkaloids in unripe fruit really do what?

Answer 1

Are toxins

Question 2

!!! Clay absorb alkaloids, so why do parrots lick clay?

Answer 2

Cation exchange capacity: number of cations soil capable of holding.

Question 3

Herbivores eat plants. Thus, plants are?

Answer 3

Dilute foods

Question 4

Limiting nutrient in plants?

Answer 4

Nitrogen

Question 5

Digestibility reducers that are chemicals that?

Answer 5

Interfere the digestion of food. They make it so the herbivore cannot get the nutrient from that food. They usually function in the gut.

Question 6

In order to be a digestive reducer, you need to?

Answer 6

Survive in the gut, avoid being digested,

Question 7

Two essential amino acids plants make using threonine deaminase (TD)?

Answer 7

•Threonine
•Isoleucine.

Question 8

Can insects make threonine and isoleucine?

Answer 8

No, they have to obtain them

Question 9

TB2 (Threonine deaminase 2)?

Answer 9

Degrades threonine, the gene duplicated form of TD.

Question 10

Herbivore performance is reduced or increased when consuming a plant with TD-2P?

Answer 10

Reduced

Question 11

TD2 is active by?

Answer 11

Proteases in hornworm gut

Question 12

pTD2 is the?

Answer 12

Active form of TD2

Question 13

How do plants make sure that TD2 doesn’t give a negative consequence to plants?

Answer 13

They keep an inactive version of TD2.

Question 14

If the gut of an herbivore digests protein, then as a TP2 protein, how can you survive in an herbivores’ gut?

Answer 14

More ion pairs, more stable in basic Lepidoptera gut

Question 15

Proteases?

Answer 15

•protein regulation
•Insect digestive enzymes