HUMAN ANATOMY & PHYSIOLOGY (LCPO)
11th Edition
ISBN: 9780134807430
Author: Marieb
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 2CCS
Children with Muscular Disorders
You're doing a clinical rotation with Dr. Barr, a world-renowned specialist in children's muscle disorders. On your first day, you meet three patients with the same probable diagnosis—nemaline myopathy. Jodi, age 2, has a waddling walk and difficulty standing; Linda. 6 months, has pneumonia associated with problems swallowing; and Tom, 12, has progressive weakness with foot drop and difficulty walking.
“This kind of variation is not surprising.” says Dr. Barr. “A mutation in one of 11 different genes related to thin filaments can cause nemaline myopathy, so you’d expect to see it present in different ways.”
Dr. Barr has scheduled all three children for a muscle biopsy (surgical removal of a small piece of muscle tissue for examination). He explains to you. “We’re going to use these biopsies for two things. First, we're going to look for the characteristic histology of nemaline myopathy. Second, we're going to test for malignant hyperthermia. It's not associated with nemaline myopathy but is associated with a different myopathy that has a similar presentation.”
2. What does troponin do?
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QUESTION 3
The table below shows the results of an investigation in which the effect of
temperature and light on the yield of tomatoes in two greenhouses on a farm
was investigated.
TEMPERATURE
(°C)
AVERAGE YIELD OF TOMATOES PER
3.1
PLANT
(kg)
LOW LIGHT LEVELS
HIGH LIGHT LEVELS
5
0,5
0,5
10
1,5
2,5
15
3,0
5,0
20
3,6
8,5
25
3,5
7,8
30
2,5
6,2
State TWO steps the investigator may have taken into
consideration during the planning stage of the investigation.
(2)
3.2
Identify the:
a) Independent variables
(2)
b) Dependent variable
(1)
3.3
Plot a line graph showing the results of the average yield of the
tomatoes from 5°C to 30°C for low light levels.
(6)
3.4
State ONE way in which the scientists could have improved the…
Explain why you chose this mutation. Begin by transcribing and translating BOTH the
normal and abnormal DNA sequences. The genetic code below is for your reference.
SECOND BASE OF CODON
כ
FIRST BASE OF CODON
O
THIRD BASE OF CODON
SCAGUCAGUGAGUCAG
UUU
UUC
UCU
UAU
UGU
Phenylalanine
(F)
Tyrosine (Y)
Cysteine (C)
UCC
UAC
UGC
Serine (S)
UUA
UUG
Leucine (L)
UCA
UCG_
UAA
UGA
Stop codon
-Stop codon
UAG
UGG -Tryptophan (W)
CUU
CUC
CCU
CAU
CGU
Histidine (H)
CCC
CAC
CGC
-Leucine (L)
Proline (P)
CUA
CCA
CAA
CUG
CCG
CAG-Glutamine (Q)
-Arginine (R)
CGA
CGG
AUU
ACU
AAU
AGU
AUC
Isoleucine (1)
Asparagine (N)
ACC
AAC
Threonine (T)
AUA
ACA
AAA
Methionine (M)
Lysine (K)
AUG
ACG
Start codon
AAG
AGC-Serine (S)
-Arginine (R)
AGA
AGG
GUU
GCU
GAU
GUC
GUA
GUG
GCC
Valine (V)
-Alanine (A)
GCA
GCG
GAC
GAA
GAG
Aspartic acid
(D)
GGU
Glutamic acid
(E)
GGC
GGA
GGG
Glycine (G)
In order to provide a complete answer to the question stated above, fill in the mRNA bases
and amino acid sequences by using the Genetic Code…
Chapter 9 Solutions
HUMAN ANATOMY & PHYSIOLOGY (LCPO)
Ch. 9 - Prob. 1RQCh. 9 - 2. A fascicle is a (a) muscle, (b) bundle of...Ch. 9 - 3. Thick and thin myofilaments have different...Ch. 9 - 4. The function of the T tubules in muscle...Ch. 9 - 5. The sites where the motor nerve impulse is...Ch. 9 - 6. Contraction elicited by a single brief stimulus...Ch. 9 - 7. A smooth, sustained contraction resulting from...Ch. 9 - 8. Characteristics of isometric contractions...Ch. 9 - 9. During muscle contraction, ATP is provided by...Ch. 9 - 10. The neurotransmitter released by somatic motor...
Ch. 9 - 11. The ions that enter the skeletal muscle cell...Ch. 9 - 12. Myoglobin has a special function in muscle...Ch. 9 - 13. Aerobic exercise results in all of the...Ch. 9 - 14. The smooth muscle type found in the walls of...Ch. 9 - 15. Name and describe the four special functional...Ch. 9 - 16. Distinguish between (a) direct and indirect...Ch. 9 - 17. (a) Describe the structure of a sarcomere and...Ch. 9 - 18. What is the importance of acetylcholinesterase...Ch. 9 - 19. Explain how a slight (but smooth) contraction...Ch. 9 - 20. Explain what is meant by the term...Ch. 9 - 21. Define and draw a motor unit.
Ch. 9 - 23. True or false: Most muscles contain a...Ch. 9 - 24. Describe some cause(s) of muscle fatigue and...Ch. 9 - 26. Smooth muscle has some unique properties, such...Ch. 9 - 2. When a suicide victim was found, the coroner...Ch. 9 - 3. Muscle-relaxing drugs are administered to a...Ch. 9 - Children with Muscular Disorders You're doing a...Ch. 9 - Children with Muscular Disorders
You're doing a...Ch. 9 - Children with Muscular Disorders
You're doing a...Ch. 9 - Children with Muscular Disorders
You're doing a...Ch. 9 - Children with Muscular Disorders You're doing a...Ch. 9 - Children with Muscular Disorders You're doing a...Ch. 9 - Children with Muscular Disorders
You're doing a...
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