Multiple Choice QuestionsAdding salt and sugar to food substances helps in preserving them for a longer duration. It is because excess salt and sugar
cause rupturing of microbial cells
cause change in the shape of microbial cells
remove water from food
plasmolyse the microbial cells
Hormone Adrenaline
helps the body to adjust stress level when one is very angry or worried
helps control height
helps control balance of electrolytes in the body
helps control level of sugar in the blood
The thumb of humans moves more freely than other fingers due to the presence of
gliding joint
hinge joint
saddle joint
pivotal joint
A common characteristic feature of plant sieve-tube cells and mammalian erythrocytes is
absence of chloroplast
absence of cell wall
presence of haemoglobin
absence of nucleus
Which of the following is immovable joint?
Pivot-joint between head and neck
Hinge-joint of elbow
Joint between skull bone
Ball and socket joint
Which blood corpuscle help in coagulation of blood?
Lymphocyte
Platelets
Monocyte
Red blood corpuscles
In yeast asexual reproduction takes place through
Budding
Fission
Both (1) and (2)
None of these
A.
Budding
Yeast are unicellular (some are multicellular) eukaryotic micro-organisms belonging to the kingdom fungi. Yeast size can vary greatly depending on the species, typically measuring 3-4 pm in diameter. Most yeasts reproduce asexually by an asymmetric division process called budding. First, it produces a small protuberance on the parent cell that grows to full size and forms a bud. The nucleus of the parent cell splits into a daughter nucleus and migrates into the daughter cell. The bud detaches from the mother's body by forming a constriction at the base. Budding will repeat to form a chain of bud cells. The daughter cell produced during the budding process is generally smaller than the mother cell.
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