BIOLOGY
PEPSIN IS SECRETED AS AN INACTIVE PRECURSOR CALLED PEPSINOGEN BECAUSE
A. pepsin as an enzyme is quickly destroyed by the alkaline food from the mouth B. all digestive enzymes pass through a precursor stage ✓ C. pepsin is a proteolytic enzyme and ...
THE MESOPHYLL LAYER OF A LEAF CONSISTS OF
A. wax and cutin B. cells with lignified walls C. irregularly shaped collenchyma cells D. photosynthetic parenchyma cells ✓ The mesophyll layer of a leaf consists of photosynthetic parenchyma cells. These cells ...
THE MUSCLE CELL FLUID OF AN ATHLETE WAS TESTED IMMEDIATELY AFTER A 10 M RACE AND WAS FOUND TO CONTAIN A HIGH CONCENTRATION OF LACTIC ACID. EXPLAIN WHAT COULD HAVE CAUSED THIS. THE
A. athlete must have eaten food containing lactic acid just before the race B. Athlete must have injected lactic acid into his blood just before the race C. athletes muscle must have ...
THE DISADVANTAGE OF COMPLEXITY OF ORGANISATION IN THE HIGHER ORGANISMS IS THAT IT LEADS TO
A. mutual interdependence between component cells B. internal structural specialization C. increased adaptation to environment D. slower rate of diffusion of oxygen to individual cells ✓ The disadvantage of complexity of organization in ...
THE GROUP OF MICRO-ORGANISMS THAT PLAYS A VITAL ROLE IN THE BAKING INDUSTRY IS
A. algae B. bacteria C. fungi ✓ D. protozoa E. viruses The answer to the question is: C. fungi In the baking industry, fungi play a vital role. Fungi are a diverse group of microorganisms that include yeasts ...
THE MOST LIKELY MODE OF AN ORGANISM THAT POSSESSES ATTACHMENT STRUCTURE, THIN OUTER SURFACE LAYER AND ABSENCE OF AN ELABORATE DIGESTIVE TRACT IS
A. Autotrophic B. holophytic C. parasitic ✓ D. saprophytic E. symbiotic The answer to the question is: C. parasitic An organism that possesses attachment structures, a thin outer surface layer, and the absence of an ...
TWO IDENTICAL TWIN BOYS HAD DIFFERENT FINGER PRINT. THIS PROVES THAT
A. finger print is a sex-linked character B. the genotypes of the twins are similar C. the phenotypes of the twins are similar D. there are morphological variations ✓ E. there are physiological variation in ...
MODERN METHOD OF CLASSIFICATION OF LIVING THINGS IS BASED ON SIMILARITY OF
A. colour B. habitat C. shape D. size E. structure ✓ The answer to the question is: E. structure The modern method of classification of living things is based primarily on the similarity of their structures ...
THE PROCESS WHICH ENSURES THAT THE CHROMOSOME NUMBER FOR EACH SPECIES OF ORGANISM REMAINS CONSTANT FROM GENERATION TO GENERATION IS CALLED
A. fission B. fusion C. meiosis D. mitosis ✓ E. oogenesis The answer to the question is: D. mitosis In the context of genetics and biology, the process that ensures the chromosome number for each species ...
THE STREAMING MOVEMENT OF CYTOPLASM OBSERVED IN A FRESHLY CUT LEAF OF A WATER PLANT IS TERMED
A. amoeboids B. centrifugal motion C. ciliary motion D. cyclosis ✓ E. osmosis The answer to the question is: D. cyclosis Cyclosis, also known as cytoplasmic streaming, is the movement of the cytoplasm within a cell ...
