BIOL133Z Past exam 2 Flashcards
Which of the following is NOT a primary tissue type?
a. Muscle
b. Nervous.
c. Epithelial.
d. Parenchyma
e. Connective
d. Parenchyma
Which of the following is an example of positive feedback?
a. The upstroke of the action potential.
b. A decline in lutenizing hormone after ovulation.
c. A rise in body temperature to normal following a period of shivering.
d. A fall in body temperature after a period of fasting.
e. A rise in blood glucose after a meal.
e. A rise in blood glucose after a meal.
Which one of the following functions is INCORRECTLY matched with the immune cells of mammals?
a. Neutrophils - highly mobile phagocytes.
b. Eosinophils - secrete chemicals that fight parasites.
c. Basophils - release histamine and heparin.
d. Monocytes change into macrophages.
e. B lymphocytes – that turn into T cells.
b. Eosinophils - secrete chemicals that fight parasites
Which one of the following are NOT associated with the invertebrate immune system?
a. Phagocytes or phagocyte-like cells.
b. Antibodies.
c. Cytokines
d. Natural killer cells.
e. Haemocytes.
b. Antibodies.
Which of the following is NOT true about gas transfer in animals?
a. The partial pressure of oxygen in the external media is around 150 mm Hg.
b. The partial pressure of oxygen inside the cells is around 100 mm Hg.
c. Oxygen diffusion occurs both at the air-lung interface and the capillary-tissues interface.
d. Oxygen mostly does not move by diffusion along the major blood vessels.
e. There is an inward gradient for the diffusion of oxygen from the outside to the internal tissues.
d. Oxygen mostly does not move by diffusion along the major blood vessels.
What is the intrapleural pressure in the human lung and what does it do?
a. 756 mm Hg and helps the alveolar region to deflate.
b. 756 mm Hg and helps the diaphragm move upwards on inspiration.
c. 756 mm Hg and helps the alveolar region to remain open.
d. 760 mm Hg and helps the alveolar region to deflate.
e. 760 mm Hg and helps the diaphragm to move downwards on expiration.
b. 756 mm Hg and helps the diaphragm move upwards on inspiration.
Which of the following is correct about skeletal muscle contraction?
a. Each myosin filament is surrounded by an array of actin filaments.
b. The thick filaments are made of myosin.
c. Tropomyosin is a contractile protein.
d. Answers (a) and (b) only.
e. Answers (a) and (c) only.
d. Answers (a) and (b) only?
What is metabolic scope?
a. The difference between standard metabolic rate and routine metabolic rate.
b. The maximum aerobic metabolic rate.
c. The difference between resting metabolic rate and standard metabolic rate.
d. The difference between standard metabolic rate and maximum aerobic metabolic rate.
e. The difference between maximum anaerobic metabolic rate and the maximum aerobic metabolic rate.
d. The difference between standard metabolic rate and maximum aerobic metabolic rate.
In animal locomotion, what problems do large marine mammals face?
a. Overcoming inertia at slow speeds.
b. Overcoming the cohesive forces of the water at slow speeds.
c. Living at a low Reynolds number.
d. Overcoming turbulent flow at low speeds.
e. Overcoming gravity at high speeds.
a. Overcoming inertia at slow speeds.
Which of the following is a major nutritional function of the digestive system?
a. Motility.
b. Secretion.
c. Digestion.
d. Absorption.
e. All of the above.
e. All of the above.
In the locomotion of teleost fishes, what does the white muscle do?
a. The main muscle used for buoyancy control.
b. The main muscle used for oxygen storage at depth.
c. The main muscle used for cruising over long distances.
d. The main muscle used for sprinting over short distances.
e. The main muscle for storing carbon dioxide at depth.
d. The main muscle used for sprinting over short distances.
Which of the following is CORRECT about the parasympathetic nervous system?
a. Both pre- and post-ganglionic neurones use acetylcholine.
b. Both pre- and post-ganglionic neurones use noradrenalin.
c. Has pre- and post-ganglionic neurones of the same length.
d. The post-ganglionic neuron is longer than the pre-ganglionic neuron.
e. There are adrenergic receptors on the target tissues.
a. Both pre- and post-ganglionic neurones use acetylcholine.
Regarding the basis of the action potential in nerves, what is the Na pump (the Na+K+-ATPase) responsible for?
a. The upstroke of the action potential.
b. Restoring the resting membrane potential in the refractory period.
c. Opening the Na+ gates.
d. The downstroke of the action potential.
e. All of these answers
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Which of the following is true about the osmoregulatory strategy of euryhaline marine teleosts in seawater?
a. They drink seawater and produce dilute urine.
b. They increase solute concentration of the plasma by producing large amounts of urea.
c. The gain water osmotically across the gills.
d. They excrete excess sodium in the urine.
e. The actively excrete sodium chloride across the gills
a. They drink seawater and produce dilute urine.
Which series of events occurring in the guard cells leads to stomatal opening?
a. Efflux of ions, water efflux, increase in guard cell turgor
b. Efflux of ions, water efflux, decrease in guard cell turgor
c. Influx of ions, water influx, decrease in guard cell turgor
d. Water efflux, efflux of ions, decrease in guard cell turgor
e. Influx of ions, water influx, increase in guard cell turgor
(e) Influx of ions, water influx, increase in guard cell turgor
