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 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

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

Anemia

Artritis

Hemophilia

Thrombosis

None

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

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

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

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

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

None

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

Radius

Scapula

Sternum

Femur

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

Sensory neuron

Efferent neuron

None

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

Humerus

Pelvic Girdle

Vertebral Column

Clavicle

None

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 act as an insulator and speed up impulse transmission.

To synthesize neurotransmitters for the neuron.

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?

Collecting duct

Proximal convoluted tubule

Loop of Henle

Glomerulus

None

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

Osmotic pressure created by proteins in Bowman’s capsule.

Active transport of waste products into the nephron.

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

The diffusion of water down its concentration gradient

None

10.

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

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