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[BIO 169] Lab Practical 1 (Answered) 100% Correct. Updated 2024/2025. $10.99   Add to cart

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[BIO 169] Lab Practical 1 (Answered) 100% Correct. Updated 2024/2025.

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[BIO 169] Lab Practical 1 (Answered) 100% Correct. Updated 2024/2025.

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[BIO 169] Lab Practical 1 (Answered)
100% Correct. Updated 2024/2025.
Homoeotherms

elevate their body temperature and maintain it within a defined range

Thyroid stimulating hormone is released directly into the blood and affects cells in the

Thyroid

Thyroid Releasing Hormone is secreted by

neurosecretory cells in the hypothalamus

T3 and T4 are

hydrophobic and stored in the extracellular thyroglobulin

The majority of thyroid hormone is secreted in the form of

T4

Thyroid Releasing Hormone is released into the blood and directly affects cells

in the anterior pituitary gland

The body's thermostat is located in the

hypothalamus

Why did the mouse exhibit a higher metabolic rate as the temperature was decreased below 18 degrees
Celcius?

the mouse shivered while being exposed to the extreme cold temperature

What is the effect of moderate cooling on the rate of oxygen consumption?

the rate of oxygen consumption increased

As the temperature was ______________ the metabolic rate __________ due to
___________________________ .

decreased, increased, increased activity of the thyroid gland

The amount of hemoglobin that binds to oxygen is dependent upon

all of the above.

The partial pressure of oxygen is

the portion of the barometric pressure produced by oxygen

, As the partial pressure of oxygen is significantly lowered the affinity between oxygen and hemoglobin

decreases

Which of the following would increase the relative acidity of the blood?

both A and C are correct

A right shift in the oxygen dissociation curve would occur as the blood _________ _______________ .

pH, decreased

At partial pressure of oxygen of 50 mmHg, a lower pH would result in

increased release of oxygen from Hemoglobin

At partial pressure of oxygen of 50 mmHg, a decrease in DPG would result in

decreased release of oxygen from Hemoglobin

Red Blood Cells

make ATP through glycolysis

2,3 Diphosphoglycerate is a molecule that

both B and C are correct

A right shift in the oxygen dissociation curve would occur as the blood _________ _______________ .

DPG levels increase

The ECG measures

action potentials in the atria ventricles

You are measuring the impact of exercise on the ECG of an individual. You notice that the T - P interval is
reduced as the person exercises. The T - P interval is located _________ and from this observation you
can determine that___________________

between adjacent ECGs as T corresponds to the repolarization of the ventricles; the duration of blood
flow to the coronary arteries is decreased between cardiac cycles

You are measuring the impact of exercise on the ECG of an individual. You notice that the P - R interval
does not change as the person exercises. From this observation you can determine that

exercise has no impact on the atrial action potential

The lub sound is created when _________________ while the dub sound is created when
____________________ .

AV valves close, Semi lunar valves close

The lub sound corresponds to _________________, while the dub sound corresponds to
____________________________ .

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