Question 1 of 20 2,099 total questions
Reabsorption of the metabolic products along the kidney tubules is made possible by the
A closeness of the intestine to the kidney
B convoluted nature of the tubules
C presence of convoluted tubules in the medulla
D presence of network of capillaries around the convoluted tubules
E joining of the main collecting tubules to the kidney tubules
In the anaerobic stage of respiration, the net ATP molecules produced per
A one
B two
C three
D four
E five
The structure that will be stained blue-black by iodine is labelled
The part labelled ll is the
A stoma
B palisade cell
C spongy cell
D guard cell
E epidermal cell.
The function of the part labelled I is
A controlling water loss
B trapping solar energy
C absorbing water
D storing sugar
E transporting sugar
The cell membrane of a cell is said to be semi-permeable because
A it allows only large molecular substances to pass through it into the cell
B it is actively involved in energy production in the cell
C it actively allows all substances to pass through it by diffusion
D it is actively selective in allowing substances pass through it
E fatty acids are only the building blocks of the membrane
In complex food relationships in a community, the primary, secondary and tertiary consumers are referred
A symbionts
B omnivores
C heterotrophs
D autotrophs
E carnivores
Higher organisms use a transport system and not diffusion only to distribute nutrients because
A the ratio of their surface area to volume is small
B metabolic waste products diffuse to the surface of the organisms
C the rate at which nutrients and other substances diffuse increases
D substances to be transported move shorter distances to reach the numerous cells
E the internal structures of the organisms are in direct contact with the environment.
Which of the following is not a tissue found in plants?
A Epidermis
B Phloem
C Xylem
D Dermis
E Mesophyll
Which of the following pairs of tissues is responsible for strengthening the plant?
A Phloem and Epidermis
B Parenchyma and Cambium
C Collenchyma and Sclerenchyma
D Collenchyma and Cambium
E Xylem and Cambium
Which of the following statements is correct?
A biceps muscles has its origin on the head of the humerus
B biceps muscle is inserted at the ulna
C triceps muscle originated at the scapula and head of the humerus
D ulna is pulled up when the biceps is relaxed
E radius is the point of insertion of triceps muscle
Which of the following groups carry out similar functions in living things?
A Vertebral column, chitin, and guard cells
B Sclerenchyma, cartilage and chitin
C Tendon, chitin and neurone
D Collenchyma, Intercellular spaces and blood vessels
E Blood vessels, lymph and shell
Carbondioxide enters the stomata during photosynthesis through the process known as
A osmosis
B active transport
C diffusion
D inhalation
E ventilation
One of the differences between plant and animal cells is that in plants
A 'cells have less distinct outline, but animal cells have distinct outline
B ell wall is made of cellulose, but animal cell wall is made of chitin
C large vacuoles are absent, but present in animals
D plastids are absent, but present in animals
E carbohydrates are stored as starch, but as glycogen in animals.
Which of the following organisms is one-celled and free-living?
A Volvox
B Spirogyra
C Rhizopus
D Chlamydomonas
E Hydra
Which of these could be regarded as an advantage of complexity in higher organisms?
A there is no cellular differentiation
B Cellular differentiation leads to loss of independence of the cells
C Complexity stops at cellular differentiation only
D Cellular differentiation leads to internal structural specialization
At what level of organisation is Amoeba?
A Tissue
B Organ
C Cellular
D System
E Filament
Which of the following structures does not function as support in animals?
A Cuticle in arthropods
B Scales in' birds
C Cartilage in mammals
D Body fluid in earthworms
E Bones in vertebrates
In man, adult schistosoma is found in the
A blood vessels of the bladder
B red blood corpuscles
C lymphatic vessel
D blood vessels of the lung
E white blood cells
Which of these statements is correct in the human ABO blood grouping system?
A B is recessive
B A is dominant over B
C O is recessive
D O has antigene A and B
E A and B are both recessive
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