OnlineCBT
Biology · CELL THE UNIT OF LIFE
Practice questions & answers
Find a question, read its answer and explanation, then practise related questions.
Biology CELL THE UNIT OF LIFE · Clear filters
83 questions
Biology · CELL THE UNIT OF LIFE
Leucoplasts are non-pigmented plastids that specialize in storing various nutritional reserves. Which pair of leucoplast type and its stored nutrient is INCORRECTLY matched?
Read answer →Biology · CELL THE UNIT OF LIFE
Match List-I with List-II: List-I (Component) List-II (Structural Feature) A Axoneme I Central proteinaceous part of the centriole B Centriole II Nine evenly spaced peripheral triplets of tubulin (9+0) C Hub III Radial structures of protein connecting doublets to central sheath D Radial spokes IV Nine doublets of peripheral microtubules and a pair of central microtubules (9+2) Choose the correct answer from the options given below:
Read answer →Biology · CELL THE UNIT OF LIFE
In human erythrocytes, chemical analysis reveals that the plasma membrane contains approximately:
Read answer →Biology · CELL THE UNIT OF LIFE
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Mitochondria divide inside eukaryotic cells by the process of fission. Reason (R): The mitochondrial matrix possesses multiple linear double-stranded DNA molecules and 80S cytoplasmic ribosomes. In the light of the above statements, choose the correct answer from the options given below:
Read answer →Biology · CELL THE UNIT OF LIFE
Consider the following statements regarding the ultrastructure of chloroplasts: 1. The inner chloroplast membrane is relatively less permeable than the outer membrane. 2. The stroma contains enzymes required for the synthesis of carbohydrates and proteins, as well as 70S ribosomes and small double-stranded circular DNA. 3. The chlorophyll pigments are present in the stroma lamellae exclusively. Which of the above statements are correct?
Read answer →Biology · CELL THE UNIT OF LIFE
Refer to the given figure showing different cell shapes: What are the shapes of Red blood cells, Columnar epithelial cells, and Mesophyll cells respectively?
Read answer →Biology · CELL THE UNIT OF LIFE
When the glycocalyx in bacteria forms a loose sheath, it is referred to as:
Read answer →Biology · CELL THE UNIT OF LIFE
Comparing the plant cell (a) and animal cell (b) in Figure 8.3, which set of organelles is present in BOTH cells?
Read answer →Biology · CELL THE UNIT OF LIFE
The given diagram illustrates the Golgi apparatus (Figure 8.6). Which of the following statements accurately describes the structural dimensions and arrangement of the cisternae visible in this organelle?
Read answer →Biology · CELL THE UNIT OF LIFE
