BIOLOGY TEST 7 - PAK ARMED FORCES TEST

QUIZ START

Results

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QUIZ START

#1. Which of the following is responsible for saltatory conduction in myelinated neurons?

Axon membranes

Nodes of Ranvier

Schwann cells

Voltage-gated channel proteins

#2. The sympathetic and parasympathetic nervous systems are subdivisions of the:

Autonomic nervous system

Peripheral nervous system

Somatic nervous system

Central nervous system

#3. Which one of the following best describes the waxy-appearing material called myelin?

A mass of white lipid material that surrounds the dendrites of a neuron

An outer membrane on a neuroglial cell

A mass of white lipid material that insulates the axon of a neuron

A lipid-protein (lipoprotein) cell membrane on the outside of axons

#4. The distance for the neurotransmitters to reach the target cells is less than a:

Nanometer

Micrometer

Millimeter

Centimeter

#5. Meissner’s corpuscles:

Are found primarily in connective tissue

Are unencapsulated

Are nociceptors

Are mechanoreceptors

#6. The part of a neuron that conducts impulses away from its cell body is called a(n):

Axon

Dendrite

Neurolemma

Schwann cell

#7. The substance released at axon terminals to propagate a nervous impulse is called a(n):

Ion

Hormone

Neurotransmitter

Tropic substance

#8. Where does fertilization of the egg by the sperm typically occur?

Vagina

Uterus

Uterine tube

Ovary

#9. What is the function of the epididymis?

Sperm maturation and storage

Produces the bulk of seminal fluid

Provides nitric oxide needed for erections

Spermatogenesis

#10. Spermatogenesis takes place in the:

Prostate gland

Glans penis

Seminiferous tubules

Ejaculatory duct

#11. The timing of puberty can be influenced by which of the following?

Genes

Stress

Amount of body fat

All of the above

#12. The periodic shedding of the endometrium is known as:

Ovulation

Secretory phase

Menstruation

Menstrual cycle

#13. Which of the following glands are responsible for 60-70% of the synthesis of semen?

The seminal vesicles

The Bulbourethral glands

The prostate

The Cowper's glands

#14. The primary function of the uterus is to:

Protect the ovaries

Synthesize female hormones

Regulate the ovarian and menstrual cycles

Receive, retain, and nourish a fertilized ovum

#15. Spermatogenesis:

Is the process of releasing mature sperm cells into the lumen of the seminiferous tubule

Involves a kind of cell division limited to the gametes

Results in the formation of diploid cells

Uses mitosis to produce gamete cells

#16. __________ cavities are spaces within joints:

Nasal

Synovial

Orbital

Oral

#17. The cell responsible for secreting the matrix of bone is the:

Osteocytes

Osteoblast

Osteoclast

Chondrocyte

#18. Vertebrae are considered __________ bones:

Long

Flat

Weak

Irregular

#19. In the classification of joints, which of the following is true?

Immovable joints are cartilaginous in nature

All synovial joints are freely movable

Synovial joints are slightly movable

In cartilaginous joints, a joint cavity is present

#20. Pancreas is under the control of

MSH

Blood glucose

All of the above

#21. The correct sequence of nerve impulse in muscle is:

Sarcolemma -> T-tubule -> Sarcoplasmic reticulum

T-tubule -> Sarcolemma -> Sarcoplasmic reticulum

Sarcolemma -> Sarcoplasmic reticulum -> T-tubule

Sarcoplasmic reticulum -> Sarcolemma -> T-tubule

#22. Calcium ions bind to the __________ molecule in skeletal muscle cells:

Actin

Tropomyosin

Troponin

Myosin

#23. Myoglobin:

Breaks down glycogen

Is a protein involved in the direct phosphorylation of ADP

Stores oxygen in muscle cells

Is a protein that contracts muscles

#24. Creatine phosphate functions in the muscle cell by:

Forming a temporary chemical compound with myosin

Forming a chemical compound with actin

Inducing a conformational change in the myofilaments

Storing energy that will be transferred to ADP to resynthesize ATP

#25. Which statement describes the biological action of the oestrogen/progesterone contraceptive pill?

Increased concentrations of the hormones increase the thickness of the endometrium of the uterus

Increased concentrations of the hormones prevent the shedding of the endometrium of the uterus

Increased concentrations of the hormones stimulate a surge in the secretion of LH from the anterior pituitary gland

Increased concentrations of the hormones suppress the secretion of FSH and LH from the anterior pituitary gland

#26. Melatonin is secreted by:

Sebaceous gland

Melanocytes

Pineal gland

Parotid gland

#27. All of the following effects are produced by adrenaline except:

Increase in heartbeat

Conversion of glucose to glycogen

Increase in breathing rate

Increase in pulse rate

#28. Glucagon abnormalities are __________ endocrine disorder

Rare

High frequency

4/100

None of the above

#29. Which of the following would be examples of antagonistic hormones?

Calcitonin and parathyroid hormone

Estrogen and progesterone

Epinephrine and Norepinephrine

FSH and Estrogen

#30. Which hormone increases osteoclast activity to release more calcium ions into the bloodstream?

Calcitonin

Thyroxine

Parathyroid hormone

Estrogen

#31. Gluconeogenesis occurs in the liver due to the action of:

Aldosterone

Insulin

Secreton

Cortisol

#32. The following occur during the response to infection:

#33. Natural active immunity is developed by

Introducing the dead/weakened antigen into individual

The attack of disease germ

Introducing ready-made antibodies

None of these

#34. T-lymphocytes get mature in

Thymus gland

Bone marrow

Blood plasma

Liver

#35. A substance containing a harmless form of the germs that cause a particular disease is:

Antibiotic

Vaccine

Chemotherapeutic

None of these

#36. Cell mediated immune response is regulated by

B-cells

T-cells

Neutrophils

Eosinophils

#37. Artificial introduction of the antigens in the body initiate the __________ immunity

Active

Passive

Artificial active

Innate active

#38. Which is an example of natural passive immunity?

Lifelong immunity

Nursing babies receive antibodies from mothers

Immunity after a viral infection once recovers

Immunity after vaccination

#39. The component of the immune response involving the transformation of B-lymphocytes into plasma cells that produce and secrete antibodies to a specific antigen:

Cell mediated immunity

Humoral immunity

Innate immunity

Autoimmune response

#40. In which of the following processes ATP produced.

Breathing

Ventilation

Organismic

Cellular respiration

#41. During inspiration the diaphragm.

Contacts

Relaxes

Contracts and relaxed

None

#42. Walls of the chest cavity are composed of.

Intercostal muscle

Ribs, intercostals mscles and diaphragm

Ribs and intercostals muscle

Ribs

#43. Exchange of gases during organismic respiration is carried out by.

Oxygen

Glycolate

Tracheole

Diffusion

#44. Diffusion of oxygen in and carbon dioxide out occurs when.

The muscles of the ribs are contracted

The muscle of the ribs are relaxed

Both A and B

difference in partial pressure of the gases

#45. During expiration air is given out when.

The muscles of the ribs are contracted

The muscle of the ribs are relaxed

Soon after its formation diffuses into mitochondria

Voccal cords

#46. In the glottis the mucous membrane is stretched across into fibrous bands.

The muscles of the ribs are contracted

The muscle of the ribs are relaxed

Vocal cords

Difference in partial pressure of the gases

#47. Exchange of O2 and CO2 at the respiratory surface occurs through:

Passive transport

Active transport

Osmosis

Diffusion

#48. Voice box is also called:

Pharynx

Larynx

Bronchi

Trachea

#49. Mechanism of breathing consists on how many phase(s)?

#50. The pigment which stores oxygen in muscles is:

Hemoglobin

Myoglobin

Myosin

Actinomyosin

#51. When oxygen tension is 115mm mercury hemoglobin is __________ saturated:

60%

98%

100%

20%

#52. Myoglobin is haemoglobin-like __________ containing protein:

Oxygen

Carbon dioxide

Iron

All the above

#53. During inspiration, diaphragm:

Contracts

Expands

Neither contracts nor expands

First contracts and then expands

#54. Opening to the trachea is covered by a small flap of tissues termed as the:

Glottis

Trachea

Epiglottis

Larynx

#55. What is another name for the windpipe?

Lungs

Larynx

Trachea

Oesophagus

#56. The following structures are found in the walls of the gas exchange system:

#57. Similarity in characteristics resulting from common ancestry is known as.

Analogy

Homology

topology

Apology

#58. Oldest known fossils are of.

Plants

Prokaryotes

eukaryotes

Apology

#59. Armadillo the armored mammals live only in.

Europe

America

Australia

Fungi

#60. Vermiform appendix is a vestigial organ in.

Herbivores

Carnivores

Omnivores

Asia

#61. Organs functionally alike but structurally different are.

Homologous

Analogous

Heterologous

Frugivores

#62. The parts of the body used extensively to cope with the environment become larger and stronger, while those that are not used deteriorate was argued by:

Charles Darwin

Alfred Wallace

Carolus Linnaeus

J.B. Lamarck

#63. Natural selection can amplify or diminish only those variations that are:

Non-heritable

Heritable

Both a & b

None

#64. How many linkage groups man has:

#65. ABO blood system was discovered by:

Mendel

K Landsteiner

Sutton

Correns

#66. The universal donor blood group is:

#67. Hypophosphatemic ricket is an X-Linked —- trait:

Dominant

Recessive

Both a and b

None of these

Finish

Results

#1. Which of the following is responsible for saltatory conduction in myelinated neurons?

#2. The sympathetic and parasympathetic nervous systems are subdivisions of the:

#3. Which one of the following best describes the waxy-appearing material called myelin?

#4. The distance for the neurotransmitters to reach the target cells is less than a:

#5. Meissner’s corpuscles:

#6. The part of a neuron that conducts impulses away from its cell body is called a(n):

#7. The substance released at axon terminals to propagate a nervous impulse is called a(n):

#8. Where does fertilization of the egg by the sperm typically occur?

#9. What is the function of the epididymis?

#10. Spermatogenesis takes place in the:

#11. The timing of puberty can be influenced by which of the following?

#12. The periodic shedding of the endometrium is known as:

#13. Which of the following glands are responsible for 60-70% of the synthesis of semen?

#14. The primary function of the uterus is to:

#15. Spermatogenesis:

#16. __________ cavities are spaces within joints:

#17. The cell responsible for secreting the matrix of bone is the:

#18. Vertebrae are considered __________ bones:

#19. In the classification of joints, which of the following is true?

#20. Pancreas is under the control of

#21. The correct sequence of nerve impulse in muscle is:

#22. Calcium ions bind to the __________ molecule in skeletal muscle cells:

#23. Myoglobin:

#24. Creatine phosphate functions in the muscle cell by:

#25. Which statement describes the biological action of the oestrogen/progesterone contraceptive pill?

#26. Melatonin is secreted by:

#27. All of the following effects are produced by adrenaline except:

#28. Glucagon abnormalities are __________ endocrine disorder

#29. Which of the following would be examples of antagonistic hormones?

#30. Which hormone increases osteoclast activity to release more calcium ions into the bloodstream?

#31. Gluconeogenesis occurs in the liver due to the action of:

#32. The following occur during the response to infection:

#33. Natural active immunity is developed by

#34. T-lymphocytes get mature in

#35. A substance containing a harmless form of the germs that cause a particular disease is:

#36. Cell mediated immune response is regulated by

#37. Artificial introduction of the antigens in the body initiate the __________ immunity

#38. Which is an example of natural passive immunity?

#39. The component of the immune response involving the transformation of B-lymphocytes into plasma cells that produce and secrete antibodies to a specific antigen:

#40. In which of the following processes ATP produced.

#41. During inspiration the diaphragm.

#42. Walls of the chest cavity are composed of.

#43. Exchange of gases during organismic respiration is carried out by.

#44. Diffusion of oxygen in and carbon dioxide out occurs when.

#45. During expiration air is given out when.

#46. In the glottis the mucous membrane is stretched across into fibrous bands.

#47. Exchange of O2 and CO2 at the respiratory surface occurs through:

#48. Voice box is also called:

#49. Mechanism of breathing consists on how many phase(s)?

#50. The pigment which stores oxygen in muscles is:

#51. When oxygen tension is 115mm mercury hemoglobin is __________ saturated:

#52. Myoglobin is haemoglobin-like __________ containing protein:

#53. During inspiration, diaphragm:

#54. Opening to the trachea is covered by a small flap of tissues termed as the:

#55. What is another name for the windpipe?

#56. The following structures are found in the walls of the gas exchange system:

#57. Similarity in characteristics resulting from common ancestry is known as.

#58. Oldest known fossils are of.

#59. Armadillo the armored mammals live only in.

#60. Vermiform appendix is a vestigial organ in.

#61. Organs functionally alike but structurally different are.

#62. The parts of the body used extensively to cope with the environment become larger and stronger, while those that are not used deteriorate was argued by:

#63. Natural selection can amplify or diminish only those variations that are:

#64. How many linkage groups man has:

#65. ABO blood system was discovered by:

#66. The universal donor blood group is:

#67. Hypophosphatemic ricket is an X-Linked —- trait:

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