MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which among the following is incorrect about cytoskeleton, cilia and flagella? |
| A. | Cytoskeleton is the network of minute proteinaceous structure in the cytoplasm and which mainly contains microfilaments and micro tubules |
| B. | Microtubules are composed of protein actin and microtubules are composed of protein tubulin |
| C. | Cilia is present in large numbers of the body and only one or two flagella are present in an organism |
| D. | Both flagella and cilia help in movement of the organism |
| Answer» C. Cilia is present in large numbers of the body and only one or two flagella are present in an organism | |
| 2. |
Which among the following is incorrect about ribosomes? |
| A. | Ribosomes are granule like structures without any membrane that act as site for protein synthesis |
| B. | The size of the ribosomes are expressed using their sedimentation coefficients and is denoted by S, where S denotes to sub units |
| C. | Eukaryotic and prokaryotic ribosomes are 80S and 70S respectively |
| D. | Eukaryotic ribosome further contains two unequal sub-units, 40S and 60S |
| Answer» B. The size of the ribosomes are expressed using their sedimentation coefficients and is denoted by S, where S denotes to sub units | |
| 3. |
Which among the following is incorrect about plastids? |
| A. | These are the organelles present only in plant cell and bear color imparting pigments |
| B. | Plastids are of three kinds, namely, leucoplasts, chromoplasts and chloroplasts |
| C. | Chromoplasts contain carotenoid pigments and provide red to orange color to the flowers and fruits |
| D. | Chloroplast is a single membrane bound organelles with stroma which contains a stack of thyllakoids called grana |
| Answer» E. | |
| 4. |
Which among the following statements is incorrect about mitochondria? |
| A. | Mitochondria is a rod-shaped organelle bounded by two membranes and is also called as the power house of the cell |
| B. | Mitochondria has an outer membrane, an inner membrane, cristae and matrix |
| C. | The inner membrane of the mitochondria is highly folded and these folds provide greater surface area for the generation of ATP molecules |
| D. | Mitochondria can t synthesize their own proteins and depend on rough endoplasmic reticulum |
| Answer» E. | |
| 5. |
Which among the following is incorrect about vacuoles? |
| A. | Vacuoles are fluid filled membrane bound sacs |
| B. | They consist of water and sap consisting of minerals, sugars, amino acids and proteins etc. |
| C. | The function of vacuoles differs from one organism to other |
| D. | Vacuoles in plants are not membrane bound and therefore they occupy most of the cell |
| Answer» E. | |
| 6. |
Excess alcohol intake leads to fatigue of SER which results in harm to the body. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which among the following is not correct about Golgi apparatus? |
| A. | They are absent in RBCs, sperm cell of Pteridophytes and Bryophytes |
| B. | Golgi apparatus is freely distributed in animal cells and in plants fluid filled sac like structures called cisternae that pile parallel to each other to form Golgi bodies |
| C. | There are three main components, namely, cisternae, tubules and vesicles |
| D. | The membrane bound containers which appear dense in the cytoplasm are called vesicles |
| Answer» C. There are three main components, namely, cisternae, tubules and vesicles | |
| 8. |
Which among the following is incorrect about lysosomes? |
| A. | These are membrane bound vesicles that contain digestive enzymes |
| B. | They are double membraned and are isolated from their neighboring environment |
| C. | The digestive enzymes present include proteases, lipases, nucleases, glycosidases and phosphatases |
| D. | The lysosomes defend against bacterial and viral infection |
| Answer» C. The digestive enzymes present include proteases, lipases, nucleases, glycosidases and phosphatases | |
| 9. |
Which among the following is incorrect about prokaryotic cell? |
| A. | In prokaryotic cell, cell compartmentalization is absent |
| B. | Genetic material is scattered in the nucleus |
| C. | Protista is an example of prokaryotic cell |
| D. | Prokaryotic cell has a cell membrane |
| Answer» D. Prokaryotic cell has a cell membrane | |
| 10. |
Which among the following is incorrect about endoplasmic reticulum? |
| A. | These are complex network of membrane bounded tubules |
| B. | They are classified as smooth and rough endoplasmic reticulum |
| C. | Smooth endoplasmic reticulum has ribosomes attached to their surface and acts as site of protein synthesis |
| D. | Rough endoplasmic reticulum is connected by nuclear membrane at one end and golgi apparatus on the other end |
| Answer» D. Rough endoplasmic reticulum is connected by nuclear membrane at one end and golgi apparatus on the other end | |