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

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

To receive chemical signals from other neurons

To provide structural support to the cell body.

To synthesize neurotransmitters for the neuron.

To act as an insulator and speed up impulse transmission.

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

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

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

None

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

Femur

Sternum

Radius

Scapula

None

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

Interneuron

Afferent neuron

Efferent neuron

Sensory neuron

None

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

The diffusion of water down its concentration gradient

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.

None

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

Chemical signal to mechanical signal to electrical signal

Electrical signal to mechanical signal to electrical signal

Electrical signal to chemical signal to electrical signal

Chemical signal to electrical signal to chemical signal

None

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

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

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

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

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

None

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

Anemia

Hemophilia

Artritis

Thrombosis

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 has a prominent odontoid process.

It articulates with the skull and lacks a centrum.

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

None

10.

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

Humerus

Pelvic Girdle

Vertebral Column

Clavicle

None

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