A capillary bed in muscle widens during exercise. The benefit is:
Correct Answer: A. More exchange of oxygen and nutrients
MCQ Collection
Animal Form and Function-I MCQs
Practice Animal Form and Function-I questions with answers and explanations.
A pathogen enters through a cut. The first local response often includes:
Correct Answer: A. Inflammation
Skin cuts increase infection risk because they break the:
Correct Answer: A. First physical barrier of immunity
A student asks why veins are called capacitance vessels. They can:
Correct Answer: A. Hold a large volume of blood at low pressure
A student traces blood flow in mammals. The right side of the heart sends blood mainly to the:
Correct Answer: A. Lungs
A student confuses allergy with immunity. Allergy is best understood as:
Correct Answer: A. An excessive immune response to usually harmless antigens
A student notes that inflammation can be helpful but also harmful if excessive. The reason is that inflammation:
Correct Answer: A. Defends tissues but may damage them when uncontrolled
During exercise, breathing and circulation increase together. The integrated purpose is:
Correct Answer: A. Meet higher oxygen demand and remove carbon dioxide
The left ventricle of a mammal has a thicker wall than the right ventricle because it:
Correct Answer: A. Pumps blood to the whole body at high pressure
A vaccine does not usually give immediate full protection because adaptive immunity needs time to:
Correct Answer: A. Activate lymphocytes and form memory
An immune cell recognizes a common microbial pattern rather than a specific learned antigen. This is typical of:
Correct Answer: A. Innate immunity
A student describes immunity as only killing pathogens. A better view is that immunity also includes:
Correct Answer: A. Recognition, communication, inflammation, and memory