Kuiz Sains Tambahan Tingkatan 5 Bab 1 Set 1

SELAMAT DATANG Kuiz Sains Tambahan Tingkatan 5 Bab 1 Set 1

Penyenggaraan Dan Kesinambungan Hidup (English)

KUIZ INI MENGANDUNGI 10 SOALAN

Which condition is characterized by the formation of a blood clot inside a blood vessel, obstructing the flow of blood?

Artritis

Anemia

Hemophilia

Thrombosis

None

Which of the following best describes the cause of Alzheimer's disease as mentioned in the source material?

The formation of blood clots in the brain, leading to memory loss.

Shrinkage of brain tissue and reduced secretion of the neurotransmitter acetylcholine.

A genetic disorder affecting the myelin sheath, leading to muscle weakness

A progressive disorder caused by a lack of the neurotransmitter dopamine.

None

What is the main driving force behind the process of ultrafiltration in the glomerulus?

Active transport of waste products into the nephron.

Osmotic pressure created by proteins in Bowman’s capsule.

The diffusion of water down its concentration gradient

High hydrostatic pressure due to the differing diameters of afferent and efferent arterioles.

None

What is the role of neurotransmitters such as acetylcholine and GABA?

To carry the chemical signal across the synapse to the next neuron.

To provide energy for the transmission of nerve impulses.

To create a physical bridge for the impulse to cross the synapse.

To form the myelin sheath around the axon.

None

What is the unique feature of the first cervical vertebra, known as the atlas, that allows for the nodding motion of the head?

It has a long, downward-pointing spinous process.

It articulates with the skull and lacks a centrum.

It has a large, thick centrum to support the skull.

It has a prominent odontoid process.

None

What is the primary function of the myelin sheath that surrounds some axons?

To synthesize neurotransmitters for the neuron.

To receive chemical signals from other neurons

To act as an insulator and speed up impulse transmission.

To provide structural support to the cell body.

None

In the mechanism of blood clotting, what is the immediate role of thrombokinase?

It directly forms a plug at the site of the wound.

It converts fibrinogen into a mesh of fibrin.

It converts prothrombin into thrombin in the presence of calcium ions.

It causes platelets to break down and release their contents

None

During hemodialysis, how are waste products like urea removed from the patient's blood?

They are filtered out using a high-pressure system similar to the glomerulus.

They diffuse from the blood into the dialysis fluid down a concentration gradient.

They are chemically broken down by enzymes present in the dialysis fluid.

They are actively transported out of the blood by the dialysis machine.

None

Which of the following is NOT part of the appendicular skeleton?

Vertebral Column

Humerus

Pelvic Girdle

Clavicle

None

10.

Which type of neuron is responsible for transmitting nerve impulses from the central nervous system to an effector like a muscle or gland?

Afferent neuron

Efferent neuron

Sensory neuron

Interneuron

None

1 out of 10