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JulsSmile [24]
3 years ago
7

When compared to the leg muscles of an olympic sprinter, the muscles of an olympic marathoner would likely show a greater propor

tion of oxidative slow-twitch fibers?
Biology
1 answer:
Alina [70]3 years ago
4 0
This is a true statement.
The human body has two types of skeletal muscle fibers: slow-twitch and fast-twitch. Slow-twitch fibers are used for long-endurance actions, such as a marathon, while fast-twitch fibers are used for sudden bursts of movements such as a sprint. Therefore, an Olympic marathoner will have a greater proportion of oxidative slow-twitch fibers when compared to an Olympic sprinter.
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A point mutation that results in the substitution of one amino acid for another within a protein is a ______.
irga5000 [103]
<span>A point mutation that results in the substitution of one amino acid for another within a protein is a missense mutation. 
</span>This type of mutation<span> is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a </span>gene<span>. </span>
5 0
3 years ago
Trapping has severely reduced the population of rabbits in an ecosystem, as shown in the bar graph below. What is the most likel
enyata [817]
I cant see the graph but the likely affect would be a unbalance to the food chain because animals that relied on the rabbits as a food source will go hungry. 
4 0
3 years ago
Drag and drop the appropriate labels into position to explain how this defect might cause mr. g's other problems.
marissa [1.9K]

How does Mr. G's altered blood flow explain his signs and symptoms? Drag and drop the appropriate labels into position to explain how this defect might cause Mr. G's other problems. Fill the boxes in order, starting with 1, then 2, etc

(Image attached)

Answer:

  1. When left ventricles contracts, some blood goes up through mitral valve into the left atrium, Turbulent flow through the valve causes systolic murmur. the atrium is overfilled and dilated.
  2. Because some blood re-entered the mitral valve, less is pumped out into the aorta. the ejection fraction is only 43%
  3. Less blood enters aorta, so SBP is low. Baroreceptor reflex causes increased heart rate; wall of overworked left ventricles becomes thicker
  4. Because its already partly full of blood from the ventricle, the left atrium accepts less blood from the lungs, the lungs overfilled with fluid; resulting in troubled breathing.

Explanation:

A murmur is a result from a abnormal blood flow to the heart.Its basically an unusual sounds that is heard between heartbeat A systolic murmur occurs when the heart muscles contracts. i.e they begin and end between S1 and S2.

From the above information, it seems like Mr G is experiencing mitral regurgitation. It is a condition where mitral valve doesnt close tightly and as a result the blood flows back from the left ventricle into the left atrium.

8 0
3 years ago
The diploid cells of a radish plant contain 18 chromosomes. How many chromosomes are in a radish plant's haploid cells?
timofeeve [1]

Answer:

9

Explanation:

The diploid chromosome number for a radish is 18 and the diploid chromosome number for cabbage is also 18. The haploid number for these species is nine. Therefore, the gametes of the radish and cabbage contain nine chromosomes.

3 0
3 years ago
WInch ferm refer to the existence of a wide range of different types of organisms in a given place at he same time?
Mazyrski [523]

Answer:Short Answer

6. F (page 12) 7. F (page 11) 8. F (page 7) 9. T (page 18)

10. T (page 14)

1. Companies common to most fire departments include (Students should include five of the following): (1) Engine company: An engine company is responsible for securing a water source, deploying handlines, conducting search-and-rescue operations, and putting water on the fire. (2) Truck company: A truck company specializes in forcible entry, ventilation, roof operations, search-and-rescue operations above the fire, and deployment of ground ladders. They are also called ladder companies. (3) Rescue company: A rescue company usually is responsible for rescuing victims from fires, confined spaces, trenches, and high-angle situations. (4) Brush company: A brush company is dispatched to woodland and brush fires that larger engines cannot reach. (5) Hazardous materials company: A hazardous materials company responds to and controls scenes involving spilled or leaking hazardous materials. (6) Emergency Medical Services (EMS) company: An EMS company responds to and assists in transporting medical and trauma patients to medical facilities for further treatment. EMS personnel often have medications, defibrillators, and other equipment that can stabilize a critical patient during transport.

Explanation:

8 0
2 years ago
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