Question

A high ratio of saturated to unsaturated fatty acids in a membrane results in a/an

1.) more kinks in the membrane structure

2.) increased fluidity in the membrane structure

3.) decreased rigidity in the membrane structure

4.) increased rigidity in the membrane structure

which of the following is NOT a product of Krebs cycle

1.) NAD+

2.) ATP

3.) FADH2

4.) CO2

Most proteins interact with DNA in the form of

1.) head to head or tail to tail homodimers

2.) head to tail heterodimers

3.) head to tail homodimers

4.) head to head heterdimers

Answer 1

A. 4 Increase rigidity in the membrane structure.

Reason: There are no double bonds in the saturated fatty acid structure so the membrane fluidity decreases and rigidity increases.

B. 1. NAD+

Reason: The products of kreb's cycle are NADH, FADH2, ATP and CO2.

C. 3. Head to tail homodimers