DBE NSC/SC Life Sciences Exam Papers May/June 2023 : education.gov.za

Organisation : Department of Basic Education (DBE)
Exam Name : National Senior Certificate (NSC) / Senior Certificate (SC) Examinations
Facility : Download Exam Papers
Month &Year : May/June 2023
Subject : Life Sciences
Medium : English
Papers : Paper 1 & Paper 2
Country : South Africa
Website : https://www.education.gov.za/Curriculum/NationalSeniorCertificate(NSC)Examinations/2023MayJuneExamPapers.aspx

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DBE NSC/SC Life Sciences Exam Paper

Download Department of Basic Education (DBE) National Senior Certificate (NSC) / Senior Certificate (SC) Examinations May/June 2023 Life Sciences Paper 1 & Paper 2 (English) Exam Papers.

Related / Similar Question Paper : DBE NSC/SC Information Technology Exam Papers May/June 2023

Section A:
Question 1:
1.1 Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1.1 to 1.1.10) in the ANSWER BOOK, e.g. 1.1.11 D.

1.1.1 Diabetes mellitus is caused by an …
a. oversecretion of glucagon.
b. undersecretion of glucagon.
c. oversecretion of insulin.
d. undersecretion of insulin.

1.1.2 Receptors that are stimulated by the low water levels in the blood are located in the …
a. renal tubules.
b. hypothalamus.
c. pituitary gland.
d. carotid artery.

1.1.3 The myelin sheath on a nerve cell …
a. provides electrical insulation.
b. transports impulses towards the cell body.
c. receives impulses from the axon.
d. converts stimuli into impulses.

1.1.4 The structure where sperms are temporarily stored is the …
a. testis.
b. epididymis.
c. vas deferens.
d. penis.

1.1.5 Which ONE of the following is a function of the amniotic fluid?
a. Provides nutrition to the foetus
b. Protects the foetus against mechanical injury
c. Supplies oxygen to the foetus
d. Removes the metabolic waste from the foetus

1.1.6 Which ONE of the following represents the corpus callosum?
a. 1
b.2
c. 3
d. 4

1.1.7 Which ONE of the following is the function of part 3?
a. Controls voluntary movements
b. Controls involuntary actions
c. Coordinates voluntary movements
d. Controls all sensations

1.1.8 The placenta is formed by the …
a. amniotic fluid and amnion.
b. chorionic villi and endometrium.
c. amnion and endometrium.
d. amniotic fluid and chorionic villi.

1.1.9 An oversecretion of the hormone produced by the thyroid gland may result in a person …
a. gaining weight, because of an increased metabolic rate.
b. gaining weight, because of a decreased metabolic rate.
c. losing weight, because of an increased metabolic rate.
d. losing weight, because of a decreased metabolic rate.

1.2 Give the correct biological term for each of the following descriptions. Write only the term next to the question numbers (1.2.1 to 1.2.8) in the ANSWER BOOK.
a. The process of maintaining a constant internal environment in the human body
b. The organelles found in large quantities in the neck region of a sperm cell
c. The disease characterised by the degeneration of brain tissue, leading to memory loss
d. The layer in the eye that is richly supplied with blood vessels
e. The type of development in birds in which the young is born fully developed and able to move and feed itself
f. Groups of cells in the pancreas that secrete insulin and glucagon
g. The structure in the sperm that contains enzymes to dissolve the outer layer of the ovum
h. A blood vessel that transports carbon dioxide from the foetus to the placenta