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Coordination Quiz 1 (30 MCQs)

This multiple-choice question set evaluates students' understanding of coordination in biological processes, including neural signaling, hormone function, and cell structure. It also assesses their ability to identify parts of the Central Nervous System and comprehend sentence structures involving coordination.

Quiz Instructions

Select an option to see the correct answer instantly.

1. What is the eye an example of?

Explanations: The eye is a sense organ because it detects light and converts it into electrical signals that are sent to the brain, allowing us to perceive visual information.

Option Analysis:

Option A: The eye is not a part of a nerve cell but rather an organ containing many nerve cells.
Option B: While neurons play a role in vision, the eye itself is considered a sense organ, not just a relay neuron.
Option C: A stimulus refers to something that causes a response; the eye detects stimuli but is not defined by this function alone.
Option D: Correct. The eye processes visual information and sends it to the brain, making it a sense organ.

2. What does the autonomic system of the PNS control?

Explanations: The autonomic system of the PNS (Parasympathetic Nervous System) controls involuntary muscle movement, specifically smooth muscles and glands. This includes actions such as pupil dilation, heart rate regulation, and digestive processes.

Option Analysis:

Option A: Metabolism is not directly controlled by the PNS but rather involves both nervous and endocrine systems.
Option B: The 5 senses are processed by the sensory nervous system, not the autonomic system.
Option C: Correct. Involuntary muscle movement is a key function of the PNS.
Option D: Skeletal muscles are controlled by the somatic nervous system, not the PNS.

3. One job of the ..... is to interpret impulses from the senses.

Explanations: The cerebrum, which is the largest part of the brain and occupies most of the skull, plays a crucial role in interpreting impulses from the senses. It processes sensory information received from various parts of the body and coordinates responses accordingly.

Option Analysis:

Option A: Midbrain does not primarily interpret sensory impulses; it is involved in regulating motor functions and relaying visual and auditory signals to other brain areas.
Option B: Cerebrum correctly interprets sensory impulses, making this the correct answer.
Option C: Since only the cerebrum among the given options is accurate, "All the above" cannot be correct.
Option D: None of the above would be incorrect since option B is valid.

4. All the following are the stages of coordinating the work between an employer and a contractor except

Explanations: Option C, "Manage access and egress," is not typically considered a stage of coordinating work between an employer and a contractor. Instead, it pertains more to site management and safety practices that are important but fall outside the primary coordination stages. Option A: Name a site contact - This is part of initial coordination. Option B: Reinforce health and safety information and site rules - This is crucial for coordination and safety. Option D: Check the job and allow work to begin - This involves final coordination steps before work commences.

Option Analysis:

Option A: Identifies a point of contact, essential for communication.
Option B: Ensures safety protocols are understood and followed by all parties.
Option C: Focuses on site management rather than coordination between employer and contractor.
Option D: Verifies the job is ready for work to start, a final coordination step.

5. Myelin sheath is present around-

Explanations: Myelin sheath is present around medullated nerve fibers, which are also known as myelinated nerve fibers. Non-medullated nerve fibers do not have a myelin sheath and consist of unmyelinated axons.

Option Analysis:

Option A: Correct. Medullated (myelinated) nerve fibers are characterized by the presence of a myelin sheath.
Option B: Incorrect. Non-medullated nerve fibers lack a myelin sheath and therefore do not have a myelin sheath present around them.
Option C: Incorrect. Myelin sheaths are specific to nerve fibers, not muscle fibers.
Option D: Incorrect. While medullated (myelinated) nerve fibers have a myelin sheath, non-medullated nerve fibers do not.

6. The central metal ion of K$_{4}$[Fe(CN)$_{6}$]

Explanations: The complex K ₄ [Fe(CN) ₆ ] is known as potassium hexacyanoferrate(II). The central metal ion in this coordination compound is iron (II), denoted as Fe ²⁺ . This is because the cyanide ligands (CN ^- ) typically form a complex with iron in the +2 oxidation state, resulting in a stable complex ion.

Option Analysis:

Option A: Incorrect. Iron(III) would not be as stable with six cyanide ligands due to its higher oxidation state.
Option B: Correct. Iron(II) is the correct central metal ion in this complex, making it the right answer.
Option C: Incorrect. There is no such thing as Fe ⁴⁺ , and iron cannot have a +4 oxidation state in this context.
Option D: Incorrect. Iron(+) does not exist; it must be either Fe ²⁺ or Fe ³⁺ .

7. What is the gap between two neurons called?

Explanations: The gap between two neurons is called a synapse. This term refers to the small space where information passes from one neuron to another through neurotransmitters.

Option Analysis:

Option A: Correct. The synapse is the specialized junction that allows for the transmission of signals between neurons.
Option B: Incorrect. Reflex refers to a rapid, involuntary response to a stimulus, not the gap between neurons.
Option C: Incorrect. Motor relates to muscle movement and is not related to the gap between neurons.
Option D: Incorrect. Stimulus is an external or internal agent that evokes a response in an organism, not the gap between neurons.

8. Which gland, found only in males, releases testosterone and produces sperm cells?

Explanations: The testes are the male reproductive glands that produce both testosterone and sperm cells. They are unique to males, making option B the correct answer.

Option Analysis:

Option A: Ovaries are female reproductive glands and do not release testosterone or produce sperm cells.
Option B: Correct. Testes in males produce both testosterone and sperm cells.
Option C: Incorrect, as only testes fit the description given.
Option D: Not applicable since one correct answer exists.

9. A nerve cell is also known as a

Explanations: A nerve cell is also known as a neuron, which is the fundamental unit of the nervous system responsible for transmitting information through electrical and chemical signals.

Option Analysis:

Option A: Cerebellum - This is a part of the brain involved in motor control and balance, not a nerve cell.
Option B: Nucleus - This term refers to the central structure within cells that contains genetic material, not specifically a nerve cell.
Option C: Cerebrum - This is the largest part of the brain responsible for higher functions like thought and action, not a nerve cell.
Option D: Neuron - Correct. A neuron is the specialized cell that constitutes the nervous system and processes information through electrical impulses.

10. A-thyroid gland is composed of two lobes which are located on either side of esophagusR-it is a butterfly shaped gland

Explanations: The statement "A-thyroid gland is composed of two lobes which are located on either side of esophagus" (Option A) is incorrect because the thyroid gland is actually a single gland with two lobes, not separate glands. The statement "it is a butterfly shaped gland" (Option R) is also incorrect as it does not accurately describe the anatomical structure of the thyroid gland.

Option Analysis:

Option A: False. The thyroid gland has one gland with two lobes, not separate glands.
Option B: Incorrect because both statements are false and R is not a correct explanation for A.
Option C: True for statement A but false for statement R; however, the correct answer provided does not consider this partial truth.
Option D: Correct. Both statements are false, making it the only accurate option given.

11. Which of the following cells are photoreceptor cells in human eye?

Explanations: Photoreceptor cells in the human eye are responsible for converting light into electrical signals that can be interpreted by the brain. These cells include both rods and cones, which are located primarily in the retina. Rods are more sensitive to low light conditions but do not distinguish colors, while cones function better under bright light and enable color vision.

Option Analysis:

Option A: Incorrect. Cones are photoreceptor cells but rods are also present.
Option B: Incorrect. Amacrine cells are not photoreceptors; they support the function of bipolar and ganglion cells.
Option C: Incorrect. Rods are photoreceptor cells but cones are also present.
Option D: Correct. Both rods and cones are indeed photoreceptor cells in the human eye.

12. The maximum potential difference that can occur on the axon membrane during depolarisation.

Explanations: The maximum potential difference that can occur on the axon membrane during depolarization is +30 mV. This value represents a significant shift from the resting membrane potential, which is typically around -70 mV. During an action potential, the membrane potential becomes more positive as sodium ions rush into the cell.

Option Analysis:

Option A: Incorrect. The resting potential of the axon membrane is closer to -70 mV.
Option B: Incorrect. This value does not represent a depolarization but rather an early phase of repolarization.
Option C: Incorrect. This represents the resting potential, not the maximum depolarization.
Option D: Correct. This is the maximum potential difference during depolarization in neurons.

13. Secretions of which of the following is necessary for increase in uptake of glucose by liver and adipose cells?

Explanations: Beta cells of the islets of Langerhans secrete insulin, which is necessary for increasing the uptake of glucose by liver and adipose cells. Insulin facilitates this process by promoting the translocation of glucose transporters to the cell membrane.

Option Analysis:

Option A: Delta cells are involved in producing glucagon, not insulin.
Option B: Correct. Beta cells secrete insulin, which increases glucose uptake.
Option C: Alpha cells produce glucagon, which has the opposite effect on glucose metabolism.
Option D: Beta cells of pancreatic acini do not exist; this option is incorrect as it refers to a part of the pancreas unrelated to insulin production.

14. A-cell body contain certain granular bodies called nissil's granulesR-they are the fragments of RER

Explanations: Nissil's granules are indeed found in the cell bodies of certain neurons, particularly those involved in the production and storage of dopamine. These granules are not directly related to the rough endoplasmic reticulum (RER), which is primarily associated with protein synthesis. Therefore, while both statements A and R are true, statement R does not correctly explain why Nissil's granules are present.

Option Analysis:

Option A: Both statements are true, but the explanation provided in R is incorrect.
Option B: This is the correct answer as explained above.
Option C: Statement A is true, but statement R incorrectly explains why Nissil's granules exist.
Option D: Both statements are false, which contradicts the facts about Nissil's granules and their relation to RER.

15. What is a synapse?

Explanations: A synapse is a junction between two neurons where neurotransmitters are released to transmit signals from one neuron to another, facilitating communication in the nervous system.

Option Analysis:

Option A: A part of the brain. Incorrect; while synapses can be found within the brain, they specifically refer to the junctions between neurons.
Option B: A type of neurotransmitter. Incorrect; neurotransmitters are chemicals that transmit signals across a synapse but are not the synapse itself.
Option C: A junction between two neurons. Correct; this accurately describes what a synapse is in the context of neural communication.
Option D: A type of nerve cell. Incorrect; nerve cells (neurons) are connected by synapses, but synapses themselves are not nerve cells.

16. What is the function of the axon of a sensory neuron?

Explanations: The axon of a sensory neuron is responsible for carrying impulses away from the cell body towards the central nervous system, not to speed up conduction (Option C).

Option Analysis:

Option A: Incorrect. The terminal end of an axon releases neurotransmitters into the synaptic cleft.
Option B: Correct. Sensory neurons carry impulses away from the cell body towards the central nervous system, which is a key function of the axon.
Option C: Incorrect. While myelin sheaths can speed up conduction, this is not the primary role of the axon in sensory neurons.
Option D: Incorrect. Sensory neuron axons carry impulses towards the cell body, not away from it.

17. Movement of sunflower in accordance with the path of Sun is due to

Explanations: Phototropism is the movement of a plant in response to light, which explains why sunflowers move in accordance with the path of the Sun during the day. This phenomenon occurs due to differential growth rates on opposite sides of the stem, caused by the presence or absence of light.

Option Analysis:

Option A: Chemotropism is the movement towards a chemical stimulus and does not involve light.
Option B: Geotropism involves growth in response to gravity, which is not related to sunflower movements.
Option C: Phototropism correctly describes the directional growth of plants in response to light, making it the right answer for sunflower movement.
Option D: Hydrotropism involves growth towards water and is not relevant to sunflowers' movements.

18. Any change or signal in the environment

Explanations: Stimuli are the initial changes or signals in the environment that trigger a response. They act as the initiating factor for any interaction, making them the correct answer to the question "Any change or signal in the environment."

Option Analysis:

Option A: Correct. Stimuli represent external changes or signals that initiate responses.
Option B: Incorrect. Receptors are sensory organs or cells that detect stimuli but do not initiate a response on their own.
Option C: Incorrect. Neurons transmit information but do not directly cause environmental changes or signals.
Option D: Incorrect. Responses are the outcomes of stimuli, actions taken in reaction to detected signals.

19. Which is NOT part of the CNS?

Explanations: The Central Nervous System (CNS) consists of the brain and spinal cord. The cerebellum, brain stem, and spinal cord are all parts of the CNS. However, the somatic system is not a part of the CNS; it refers to the division of the peripheral nervous system that controls voluntary movements.

Option Analysis:

Option A: Cerebellum - Part of the CNS.
Option B: Brain stem - Part of the CNS.
Option C: Somatic system - Not part of the CNS; it is a division of the peripheral nervous system.
Option D: Spinal cord - Part of the CNS.

20. Na$^{+}$-K$^{+}$ pumpI. No needs energy (ATP) to workII. Expels 3 Na$^{+}$ for every 2K+ ions importedIII. Works against a concentration gradientIV. Maintains resting potential

Explanations: The Na ⁺ -K ⁺ pump expels 3 sodium ions (Na ⁺ ) for every 2 potassium ions (K ⁺ ) it imports, works against a concentration gradient to maintain the resting potential of cells. This process requires energy from ATP.

Option Analysis:

Option A: Incorrect - Statement I is incorrect as the Na ⁺ -K ⁺ pump does require ATP.
Option B: Incorrect - Statements II and III are correct, but statement I is incorrect.
Option C: Incorrect - Statement I is incorrect, while statements II and III are correct.
Option D: Correct - Only statement I is incorrect as the Na ⁺ -K ⁺ pump does require ATP to function.

21. Colour of eye is due to-

Explanations: The color of the eye is due to the iris, which contains pigmented cells called melanocytes that determine the eye's color. These cells are responsible for varying shades of brown, blue, green, and other colors in the iris.

Option Analysis:

Option A: Lens - The lens is involved in focusing light onto the retina but does not contribute to eye color.
Option B: Cornea - The cornea is transparent and primarily responsible for bending light entering the eye, not affecting its color.
Option C: Iris - Correct. Contains pigmented cells that determine eye color.
Option D: Pupil - The pupil controls the amount of light entering the eye but does not affect its color.

22. Multidisciplinary teams who contribute specialized knowledge in non-hierarchical relationships and who act according to situational demands rather than traditional organizational roles

Explanations: Multidisciplinary teams who contribute specialized knowledge in non-hierarchical relationships and act according to situational demands rather than traditional organizational roles describe a scenario of collaboration . Collaboration involves working together effectively, sharing responsibilities, and adapting to changing circumstances. This aligns with the description provided.

Option Analysis:

Option A: Teamwork focuses on individuals working together towards a common goal but may not necessarily involve non-hierarchical relationships or situational demands.
Option B: Continuity of care is about maintaining consistent patient care over time, which does not match the given scenario.
Option C: Disease management involves controlling and treating diseases, unrelated to team dynamics described here.
Option D: Collaboration best fits the description as it emphasizes working together with specialized knowledge in flexible roles based on situational demands.

23. A-glucocorticoids stimulate gluconeogenesis in liverR-they inhibit cellular glucose uptake and utilization

Explanations: A-glucocorticoids indeed stimulate gluconeogenesis in the liver, which is a well-established fact. They do this by enhancing the expression of enzymes involved in glucose production from non-carbohydrate sources like amino acids. On the other hand, R states that they inhibit cellular glucose uptake and utilization, which is also correct but not the explanation for A. Glucocorticoids primarily work on increasing gluconeogenesis rather than directly inhibiting glucose use.

Option Analysis:

Option A: Incorrect as it suggests both statements are true and R explains A.
Option B: Correct, both statements are true but R does not explain why A is true.
Option C: Incorrect as statement A is true.
Option D: Incorrect as both statements are actually true.

24. Chemically the hormones are

Explanations: Hormones are chemical messengers produced by the endocrine glands and released into the bloodstream to regulate bodily functions. They can be classified as proteins, steroids, or biogenic amines. Therefore, option B is correct because it accurately encompasses all three major types of hormones.

Option Analysis:

Option A: Incorrect. Hormones are not limited to steroids only.
Option B: Correct. This includes proteins (such as insulin and growth hormone), steroids (like cortisol and testosterone), and biogenic amines (e.g., epinephrine and norepinephrine).
Option C: Incorrect. Hormones are not limited to proteins only.
Option D: Incorrect. Hormones include more than just biogenic amines.

25. Which of the following shows a complex sentence with a subordinate clause?

Explanations: Complex sentences contain a main clause and at least one subordinate clause. Option A includes both: "What you need to tell her" is the subordinate clause, and "is strictly confidential" is the main clause.

Option Analysis:

Option A: Correct. Contains a complex sentence with a subordinate clause.
Option B: Incorrect. No subordinate clause; both parts are independent clauses.
Option C: Incorrect. Both parts are independent clauses, no subordinate clause present.
Option D: Incorrect. Uses a coordinating conjunction but lacks a subordinate clause.

26. Destruction of the anterior horn cells of the spinal cord would result in loss of

Explanations: The anterior horn cells of the spinal cord are responsible for controlling voluntary motor functions, such as muscle movements that we consciously control. Destruction of these cells would result in a loss of voluntary motor impulses, making option D correct.

Option Analysis:

Option A: Sensory impulses are processed by different parts of the spinal cord and brainstem, not affected by anterior horn cell destruction.
Option B: Commissural impulses involve communication between the two halves of the brain; this is unrelated to the function of the anterior horn cells.
Option C: Integrating impulses are involved in processing and coordinating information, typically within the central nervous system rather than at the motor level controlled by the anterior horn cells.
Option D: Voluntary motor impulses are directly controlled by the anterior horn cells, making this option correct for destruction of these cells.

27. Which of the following shows a simple sentence?

Explanations: A simple sentence contains a single independent clause with a subject and a predicate, without any coordinating conjunctions (such as "and," "but," "or," "nor," "for," "so," "yet").

Option Analysis:

Option A: Correct. It has one independent clause: "I told the truth."
Option B: Incorrect. Uses "but" to connect two independent clauses.
Option C: Incorrect. Uses "or" to connect two independent clauses.
Option D: Incorrect. Uses "Although" (a subordinating conjunction) and "I told the truth," which is an independent clause, but it's not a simple sentence due to the presence of the dependent clause.

28. What is the function of the subordinate clause in this sentence? She told me what I wanted to hear.

Explanations: The subordinate clause "what I wanted to hear" functions as the direct object of the verb "told." In this sentence, "what I wanted to hear" is what she told me, making it a direct object.

Option Analysis:

Option A: Complement - Incorrect. The subordinate clause does not serve as a complement in this context.
Option B: Subject - Incorrect. The subject of the sentence is "She," not the subordinate clause.
Option C: Indirect object - Incorrect. There is no indirect object in this sentence; the subordinate clause is directly receiving the action of telling.
Option D: Direct object - Correct. The subordinate clause functions as the direct object, receiving the action of "told."

29. Which of these statements about [Co(CN)6]$^{3-}$ is true

Explanations: The complex [Co(CN)6] ^3- is an example of a low spin complex due to the strong field ligands (CN ^- ) which cause pairing of electrons in lower energy orbitals. Cobalt(III) has an electron configuration of $[Ar] 4s^0 3d^6$. In this complex, all six d-electrons are paired up, resulting in no unpaired electrons.

Option Analysis:

Option A: Correct. [Co(CN)6] ^3- has no unpaired electrons and will be in low spin configuration.
Option B: Incorrect. Four unpaired electrons are not present; all six d-electrons pair up.
Option C: Incorrect. High spin would imply unpaired electrons, which is not the case here due to strong field ligands.
Option D: Incorrect. High spin configuration does not apply as there are no unpaired electrons in this complex.

30. The peripheral nervous system consists of:

Explanations: The peripheral nervous system (PNS) consists of cranial and spinal nerves, which are the primary pathways for transmitting information to and from the central nervous system (CNS), comprising the brain and spinal cord. Cranial nerves originate directly from the brain, while spinal nerves emerge from the spinal cord.

Option Analysis:

Option A: Incorrect. The brain is part of the CNS, not the PNS.
Option B: Incorrect. The spinal cord is part of the CNS, not the PNS.
Option C: Correct. Cranial and spinal nerves are the components of the PNS.
Option D: Incorrect. Both brain and spinal cord belong to the CNS, not the PNS.

Frequently Asked Questions

What is coordination in sentence structure?

Coordination in sentence structure refers to the use of coordinating conjunctions (such as 'and', 'but', and 'or') to join words, phrases, or clauses of equal importance within a sentence. This helps create complex sentences that are more informative than simple ones.

How does coordination relate to voluntary movements?

Coordination in voluntary movements involves the synchronized action of different muscle groups controlled by the central nervous system. This ensures smooth and precise actions, such as walking or writing, through coordinated signals sent from neurons.

What are some examples of coordination in project management?

Coordination stages in project management involve ensuring that different tasks and team members work together effectively. This includes scheduling, communication, and resource allocation to achieve the project goals efficiently.

Why is coordination important for understanding sentence structure?

Understanding coordination in sentence structure helps students grasp how simple sentences can be combined using conjunctions to form more complex and varied expressions, enhancing clarity and depth of communication.

How does coordination affect the function of the central nervous system?

Coordination within the central nervous system components ensures efficient neuron-to-neuron communication, enabling actions like voluntary movements and involuntary bodily functions. This is crucial for overall physiological balance and response to environmental triggers.

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