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

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

Radius

Sternum

Femur

Scapula

None

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

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

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.

None

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

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

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

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

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

None

The functional unit of the kidney responsible for forming urine is the nephron. Which part of the nephron is primarily responsible for the selective reabsorption of glucose and amino acids?

Glomerulus

Loop of Henle

Proximal convoluted tubule

Collecting duct

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 primary function of the myelin sheath that surrounds some axons?

To provide structural support to the cell body.

To synthesize neurotransmitters for the neuron.

To act as an insulator and speed up impulse transmission.

To receive chemical signals from other neurons

None

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

Pelvic Girdle

Vertebral Column

Humerus

Clavicle

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 prothrombin into thrombin in the presence of calcium ions.

It converts fibrinogen into a mesh of fibrin.

It causes platelets to break down and release their contents

None

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

Anemia

Hemophilia

Thrombosis

Artritis

None

10.

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 articulates with the skull and lacks a centrum.

It has a prominent odontoid process.

None

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