13. Excretion in humans
A section of Biology, 0610
Listing 10 of 267 questions
Biological molecules are made of chemical elements. Complete Table 2.1 by placing ticks (✓) in the boxes to show which chemical elements each biological molecule is made from. Table 2.1 biological molecule chemical elements in the biological molecule carbon hydrogen nitrogen oxygen carbohydrate fat protein Large molecules are made from smaller molecules. The boxes on the left show the names of some small molecules. The boxes on the right show the names of some large molecules. Draw a line from each small molecule to the large molecule that it makes. Draw four lines. large molecule oil protein small molecule amino acid fatty acid glucose glycerol glycogen Complete the sentences about excretion. Choose the correct words to complete the sentences. assimilation digestion faeces gain glucose ions metabolism nitrogen plasma removal urea Excretion is the of the waste products of and substances in excess of requirements. A kidney excretes , excess and excess water. State the name of an organ in the human body that excretes carbon dioxide. is a diagram of part of the human excretory system and associated blood vessels. A B C D blood vessels State the letter of a structure in that excretes excess water. State the letter in that identifies the urethra. State the name of the structure labelled C in . State the name of the vein that removes blood from the kidneys. Excretion is one characteristic of living organisms. State two other characteristics of living organisms.
0610_s24_qp_33
THEORY
2024
Paper 3, Variant 3
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Use Define the terms excretion, egestion. The kidney is an excretory organ. It produces urine that contains urea. State where in the body urea is formed. State what urea is formed from. shows the urinary system and its blood supply. Q R S T Name the parts labelled Q, R, S and T. Q R S T Examiner's Use Complete Table 3.1 to show which components of the blood are also part of the urine of a healthy person. Use ticks () and crosses (). Two boxes have already been completed. Table 3.1 component of blood present in urine glucose red blood cells salts urea  water white blood cells 
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THEORY
2005
Paper 2, Variant 0
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Questions Discovered
267