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WorksheetsBrain Blast! (Science 9 )
Total questions: 15
Worksheet time: 14mins
1) Which blood cell is directly involved in the clotting process?
plasma
platelets
red blood cells
white blood cells
Which one of the following is NOT a function of the nose?
Traps Bacteria
Exchanges gases
Traps dust particles
Warms air entering the nose
It is also known as the voice box of the respiratory system?
epiglottis
larynx
pharynx
trachea
Which blood vessels carry blood from the various parts of the body back to the heart?
arteries
capillaries
veins
all of the above
It is the main function of valves.
adds more pressure for blood to flow faster
prevent blood from moving in the wrong direction
slows down the flow of blood
slows down the flow of blood
It is a condition in which there is a reduction in the number of red blood cells.
_ n _ m_ _
(a)
Heart muscle relaxes: diastole
heart muscles contract: (a)
_ y _ t_l_
Patterns of inheritance when both alleles in a heterozygote are expressed phenotypically: codominance
where the heterozygote has a different phenotype compared with the homozygous dominant and recessive alleles: (a)
(hint 2 words, first word 10 letters and second word 8 letters)
Traits can be found on either the X or the Y chromosome: sex-linked traits
both genders express the phenotype but in a different way: (a)
C _ d_m_n_ _ c_
Circles represent female traits; (a) represent male traits;
It is the passing on of traits from one generation to the next.
(a)
It is a specific characteristic that is unique.
(a)
What does DNA stand for?
(a)
How many pair of chromosomes are there in a normal human cell?
(a)
What stage can we identify the sex of the offspring? (a)
