Multiple Choice Questions 10×1=10
1
The process of cellular respiration occurs in:
A
Nucleus
B
Mitochondria ⚡
C
Ribosomes
D
Golgi apparatus
2
Which of these is large cell visible to the naked eye?
A
Human red blood cell
B
Ostrich egg cell 🥚
C
Plant root cell
D
Butterfly wing cell
3
In which year Robert Hooke discover cells?
A
1955
B
1665 📅
C
1765
D
1865
4
Which structure is absent in Prokaryotic cell?
A
Cell wall
B
Prominent nucleus 🧠
C
DNA
D
Ribosomes
5
Chromatin is composed of:
A
RNA and lipids
B
DNA and proteins 🧬
C
Carbohydrates and enzymes
D
Ribosomes and RNA
6
Rough ER is involved in:
A
Lipid metabolism
B
Protein synthesis 🧬
C
Detoxification
D
DNA replication
7
Golgi vesicles are used for:
A
DNA storage
B
Secretion or storage 📦
C
Photosynthesis
D
Cellular respiration
8
What is the function of root hair cells?
A
Photosynthesis
B
Water and mineral absorption 💧
C
Transmitting nerve impulses
D
Blood circulation
9
Which protein in red blood cells binds to oxygen:
A
Actin
B
Hemoglobin 🩸
C
Keratin
D
Insulin
10
Where are stem cells found in adults?
A
Only in skin
B
Only in liver
C
Only in nerve cells
D
In various tissues like bone marrow, skin and liver 🔄
Short Answer Questions 15×2=30
1
How are chromatin and chromosomes related?
Hint: Think about DNA packaging in the nucleus
ii
What is the basic unit of life?
iii
What do cells carry out in living things?
iv
Who discovered the nucleus and when?
v
What is the function of ribosomes?
vi
What are the two types of endoplasmic reticulum?
vii
What are plastids? Name their types.
viii
What are chromoplasts and their function?
ix
What is the difference between cytoplasm and cytosol?
x
What are microtubules made of?
xi
What is cell specialization?
xii
What is the function of root hair cells?
xiii
What is the function of stem cells in bone marrow?
xiv
How do stem cells contribute to immune system?
xv
How would you define a stem cell?