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Flashcards in phys6final4 Deck (15):
1

How is osmosis occurring?

From high to low water concentration

2

What is used to measure the total solute concentration?

Osmolarity

3

When the osmolarity of ICF and ECF is equal (300), it is said to be isotonic. What happens when the ECF osmolarity is higher than ICF?

The cell will shrink as water will move out of the cell to follow the solute. The ECF is then considered hypertonic.

4

Where does transcription take place?

In the nucleus

5

What is a nascent molecule composed of?

Introns and exons

6

Xx* is a female carrier, x*Y is a diseased male, x*x* is a diseased female. Complete the table

_____ X Y
X XX XY
X* X*X X*Y

7

What type of tissue arises from ectoderm?

Nervous system tissue and retina.

8

What type of tissue arises from the endoderm?

Organs and middle ear lining

9

What is the synthesis of molecules?

Anabolism

10

How is the reaction rate affected if:
a) the activation energy (AE) if high?
b) there is a catalyst present?

a) the reaction rate will be slow
b) the reaction rate will be faster (i.e. a catalyst lowers AE which is your investment).

11

Can you reach chemical equilibrium if you have more products and reactants?

Yes, as long as rate of forward and reverse reactions are equal

12

What substance does not go through structure change in a reaction - enzyme or co-enzyme?

Enzyme does not participate as a product

13

What substance is sometimes necessary to activate an enzyme?

A cofactor

14

What is a rate-limiting reaction?

The slower reaction in the metabolic pathway.

15

What is the end-product inhibition?

Pathway inhibited by its slowest reaction.