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?

Thrombosis

Artritis

Anemia

Hemophilia

None

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

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

It causes platelets to break down and release their contents

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

It converts fibrinogen into a mesh of fibrin.

None

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

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

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 actively transported out of the blood by the dialysis machine.

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.

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

The diffusion of water down its concentration gradient

None

Which of the following correctly describes a symptom and cause of osteoporosis?

Symptom: Progressive muscle weakening; Cause: A mutant gene on the X chromosome.

Symptom: Joint inflammation; Cause: Uric acid crystal buildup.

Symptom: Inability of blood to clot; Cause: Lack of clotting factors.

Symptom: Porous, brittle bones; Cause: Lack of calcium and Vitamin D.

None

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

To provide energy for the transmission of nerve impulses.

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

To form the myelin sheath around the axon.

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

None

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

Clavicle

Vertebral Column

Pelvic Girdle

Humerus

None

The human skeleton is divided into two main parts. Which of the following bones belongs to the axial skeleton?

Scapula

Sternum

Femur

Radius

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 large, thick centrum to support the skull.

It has a long, downward-pointing spinous process.

It has a prominent odontoid process.

It articulates with the skull and lacks a centrum.

None

10.

The transmission of a nerve impulse across a synapse involves the conversion of signals. What is the correct sequence of this conversion?

Electrical signal to mechanical signal to electrical signal

Electrical signal to chemical signal to electrical signal

Chemical signal to electrical signal to chemical signal

Chemical signal to mechanical signal to electrical signal

None

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