Medical Quiz

Cellular Components Quiz


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Which of the following is true about organelles in human tear gland ?

A. No membrane : lysosome, ribosome
Single membrane : Golgi apparatus, centrioles
Double membrane : nucleus, chloroplast

B. No membrane : microtubules, ribosome
Single membrane : microfilaments, endoplasmic reticulum
Double membrane : flagellum, mitochondrion

C. No membrane : microbodies, lysosome
Single membrane : ribosome, nucleus
Double membrane : mitochondrion, chromosome

D. No membrane : ribosome, centrioles
Single membrane : lysosome, Golgi apparatus
Double membrane : nucleus, mitochondrion


Which of the following is not an accurate description of a chromosome?

A. It is a coloured body localized in the nucleus.

B. It is a protein and nucleic acid complex.

C. It is the cellular structure that contains the genetic material

D. In eukaryotes, it is composed of many DNA molecules attached end to end.


Which organelle, in an animal cell, is spherical in shape and bounded by a single membrane?

A. Lysosome

B. Ribosome

C. Microbody

D. Mitochondrion


Which of the following are meristem tissues

I Vascular cambium
II cork cambium
III Vascular bundle
IV Apical shoot meristem

A. I, II and III

B. I, II and IV

C. I, III and IV

D. II, III and IV


Which one of the following eukaryotic cell structures does not contain DNA?

A. a nucleus

B. a mitochondrion

C. the endoplasmic reticulum

D. a chloroplast


Lysosomes are formed by budding from which cellular organelle?

A. smooth endoplasmic reticulum

B. Golgi apparatus

C. rough endoplasmic reticulum

D. nucleus


In the nucleus of eukaryotic cells, the genetic material is complexed with protein and organized into linear structures called:

A. centrioles

B. Histones

C. chromosomes

D. plasmids


All peroxisomes carry out this function

A. break down fats and amino acids into smaller molecules that can be used for energy production by mitochondria

B. digest macromolecules using the hydrolytic enzymes they contain

C. synthesize membrane components such as fatty acids and phospholipids

D. control the flow of ions into and out of the cell


Match the type of organelle with its correct function.

Organelle
(a) Ribosome
(b) Endoplasmic reticulum
(c) Nucleolus
(d) Golgi apparatus

Function
I Protein synthesis
II Sort, package lipid and protein for shipment
III Protein modification, lipid synthesis
IV Ribosome subunit assembly

A. I(c), II(b), III(d), IV(a)

B. I(a), II (d), III (b), IV (c)

C. I(c), II (d), III (a), IV (b)

D. I(a), II (b), III (c), IV (d)


Which of the following statements is not true about lysosome?

A. It is formed by budding off from the trans end of golgi apparatus.

B. An example of a cell that has high amounts of lysosome is the macrophage.

C. It is involved in the autolysis of cells in the tadpole tail

D. Primary lysosome binds to the phagocytic vacuole to form autophagosome.


The rough endoplasmic reticulum is:

A. an intracellular membrane system to which ribosomes are attached

B. an intracellular membrane that is studded with microtubular structures

C. a membranous structure found within mitochondria

D. only found in prokaryotic cells


Which of the following is a function of the smooth endoplasmic reticulum?

A. Synthesizing phospholipids and cholesterol

B. Breaking down old and used lipid based organelles

C. Transporting proteins and by products of protein produced by ribosomes

D. Attaching carbohydrates such as oligosaccharides to plasma membrane structures


Which of the following is a correct match?

A. Organelle : Microfilament
Function : Tracks for intercellular movement of organelles

B. Organelle :Microtubule
Function : Component of muscle myofibril

C. Organelle : Rough endoplasmic reticulum
Function : Site of lipid synthesis

D.Organelle : Centrioles
Function : Organisers of spindle fibres


Which cell would be best for studying lysosomes?

A. muscle cell

B. nerve cell

C. phagocytic white blood cell

D. bacterial cell


Which of the following does not apply to chloroplasts?

A. They contain chlorophyll and the enzymes required for photosynthesis.

B. They contain an internal membrane system consisting of thylakoids

C. They synthesize ATP (adenosine triphosphate) from ADP (adenosine diphosphate) and Pi (inorganic phosphate).

D. They are bounded by two membranes, the inner of which is folded into the cristae.


– Located near the nucleus
– There are two faces, cis and trans
– Acts as a molecular warehouse and finishing factory

Which organelle are these statements referring to?

A. Lysosome

B. Rough endoplasmic reticulum

C. Smooth endoplasmic reticulum

D. Golgi apparatus


Autophagy is

A. The digestion of the whole cell

B. The digestion of food in food vacuole

C. The digestion of old and worn out organelles in the cell

D. The phagocytosis of pathogens.


Which of the following statements does not apply to the nuclear envelope?

A. It is a double membrane

B. It has pores through which material enters and leaves.

C. It is continuous with the endoplasmic reticulum.

D. It has infoldings to form cristae




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