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Life science Paper 1 terms
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Life science paper 1 test with answers
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BIOLOGICAL TERMS: PAPER 1Give the correct biological term for the following descriptions.
Description Biological term
1. The period of development of an embryo in the pregnancy
uterus between fertilisation and birth.
2. Disease characterised by a lack of insulin diabetes mellitus
production.
3. Tube that connects the pharynx and the middle ear. eustachian tube
4. A process by which nutrients become highly eutrophication
concentrated in a body of water, leading to increased
growth of organisms such as algae.
5. A stage in the development of humans in which the Blastocyst/blastula
embryo consists of a layer of cells surrounding a
cavity.
6. The structure at the tip of a sperm cell containing acrosome
enzymes and which makes contact with the egg cell
during fertilisation.
7. The gland in the male reproductive system of Prostate gland
humans that produces an alkaline fluid to counteract
the acid environment of the vagina.
8. The duct leading from the testis to the urethra in Vas deferens/sperm duct
human males.
9. The process by which the ovum is formed through oogenesis
meiosis in the ovary.
10. The membranes which protect the central nervous meninges
system.
11. A plant growth hormone that stimulates seed gibberellins
germination.
12. The nervous system which consists of cranial and Peripheral nervous
spinal nerves. system
13. A branch of the autonomic nervous system that parasympathetic
decreases the heartbeat back to normal.
, 14. The outermost extra-embryonic membrane chorion
surrounding the embryo.
15. The hormone that regulates the salt concentration aldosterone
in the human body.
16. The blood vessel in the umbilical cord that carries Umbilical vein
blood rich in oxygen and nutrients.
17. The hormone inhibited by an increased level of TSH
thyroxin.
18. The structure in the ear that equalises the pressure Eustachian tube
on either side of the eardrum.
19. Measurement of the total amount of carbon dioxide Carbon footprint
emissions of an individual, a defined population or a
company per year.
20. The type of pollution caused when water is Thermal pollution
released into a river after being heated in power
stations or industries.
21. The watery fluid that supports the cornea and the Aqueous humour
front chamber of the eye.
22. The hormone produced by the Graafian follicle. oestrogen
23. The hormone responsible for the formation of the LH
corpus luteum.
24. The receptors in the ear that detect changes in the cristae
direction and speed of any movement of the body.
25. The type of fertilisation associated with viviparous internal
reproduction.
26. The series of changes that take place in the shape Eye accommodation
of the lens and the eyeball in response to the distance
of an object from the eye.
27. The part of the brain that controls the heart rate. Medulla oblongata
28. The maintenance of a constant internal homeostasis
environment in the body within certain limits.
29. The plant hormone that promotes seed dormancy. Abscisic acid
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