Which of the following disease/s are due to malfunctioning of lysosome?
a) glycogenolysis type II
b) Tay-Sach’s disease
c) Down’ s Syndrome
d) both a and b
Explanation: Glycogen storage disease type 2 is caused by genetic changes (pathogenic variants) in the GAA gene which have instructions to produce the enzyme acid alpha-glucosidase (acid maltase), needed to break down glycogen
Tay-Sachs disease is part of a group of genetic disorders called the GM2 gangliosidoses.
What is the diameter of peroxisomes?
a) 10nm
b) 1.0µm
c) 0.5nm
d) 2.0µm
Explanation: found in plants and animals and are called microbodies
In animals, in which of the following cells are most commonly found?
a) liver
b) heart
c) kidney
d) both a and c
Explanation: they are similar
to lysosome but have dense and different enzyme system
In the leaves of green plants, photorespiration may occur in………
a) Glyoxisomes
b) peroxisomes
c) dictyosomes
d) lysosome
Explanation: Photorespiration is a process that occurs in Calvin Cycle during plant metabolism.
Glyoxisomes are present in ……
a) animal cells
b) plant cells
c) kidney cells
d) all of these
Explanation: most abundant in plant seedlings
Which of the following is primary activity of glyoxisomes?
a) conversion of glycogen into glucose
b) conversion of glucose to lipid
c) conversion of fatty acids to carbohydrates
d) conversion of lipid to DNA
Explanation: these organelles are absent in seeds poor in lipid
