MCB 150 Final: MCB 150 final flashcards

Please Explain how to solve this problem.

Like alpha helices, beta sheets often have one side facing the surface of the protein and one side facing the interior, giving rise to an amphiphilic sheet with one hydrophobic surface and one hydrophilic surface. From the sequences listed below, pick the one that could form a strand in an amphiphilic beta sheet. Think about the way side chains are arranged in a strand of a beta sheet. (See Table 8, page 966, for one-letter amino acid code; the mnemonic in problem 3-18 might also be helpful.)
A. A L S C D V E T Y W L I
B. D K L V T S I A R E F M
C. D S E T K N A V F L I L
D. T L N I S F Q M E L D V
E. V L E F M D I A S V L D

...

1. Sickle cell anemia

2. Decompression Sickness

3. SIDS

4. Bronchiogenic Carcinoma

5. Asthma

6. Nitrogen Narcosis

7. Ischemia

8. Hypocapnia

9. Hypercapnia

10. Hypoventilation

11. hyperventilation

A. lung cancer

B. inherited conformational change in Hb; heterzygotes partially resistant to malaria; more common in premature infants; hyaline

C. Martini's LAw

D. "the bends" air embolism

E. abnormally low carbon dioxide in the blood

F. abnormally rapid breathing rate/minute volume

G. abnormally slow breathing rate/minute volume

H. crib death

I. abnormally high carbon dioxide in the blood

J. insufficient or lack of oxygen to a give ntissue

K. Acute inflammation of respiratory tree

The following diagram represents two nonhomologous chromosomesin the diploid cells of an organism. Note: the _*indicates the centromere.

A B _* C D E F G H

R S _* T U V W X

Another cell from this same individualis found to contain the chromosomes below. The homologues for thesetwo chromosomes are normal. What type of chromosomal mutation ismost likely to have occurred?

A B _* C D E F G H

R S _* T U V G W X

a.paracentric inversion

b.nonreciprocal translocation

c.displaced duplication

d.interstitial deletion

e.none of the above – this type ofchange is not possible