Biology · Science General

Cell Biology and Structure

3,221 Questions

Cell biology focuses on the structure and function of cellular organelles. Key topics include cellular respiration, DNA inheritance, and energy production. These fundamental biology concepts are crucial for medical entrance and state service examinations.

Cell organelles functionsCellular respiration sitesDNA and ribosomesAnimal cell structurePlant cell components

Cell Biology and Structure Questions

Multiple choice

Which of the following is the correct sequence of organisation within a living body?

  1. Tissues - Cells - Organs - Organ system - Organism

  2. Cells - Organs - Tissues - Organ system - Organism

  3. Cells - Tissues - Organs - Organ system - Organism

  4. Cells - Tissues - Organ system - Organs - Organism

  5. Cells - Tissues - Organs - Organism - Organ system
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct sequence of organisation within a living body. 

Multiple choice

Growing point possess _____________.

  1. meristematic cells

  2. mature cells

  3. dead cells

  4. slowly enlarging cells

  5. growth inhibitors
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The undifferentiated plant tissue from which new cells are formed, as that at the tip of a stem or root.

Multiple choice

Coltiviruses are associated with Colorado tick fever. Which of the following symmetries is present in the structure of these viruses?

  1. Enveloped icosahedral symmetry

  2. Helical symmetry

  3. Complex symmetry

  4. Non-enveloped icosahedral symmetry
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Non-enveloped icosahedral symmetry is present in the structure of this virus. It is generally spherical in shape and has two concentric capsid shells surrounding a core of about 50 nanometers in diameter.