Prokaryotic Cells and Organelles Quiz

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What is the function of the endoplasmic reticulum in a cell?

Cellular movement facilitation

Provide a surface for biochemical activities (correct)

Storage of genetic material

Energy production

Which organelle is responsible for the transport of materials, especially proteins, within the cell?

Plastids

Lysosomes

Golgi apparatus (correct)

Mitochondria

What distinguishes eukaryotic cells from prokaryotic cells?

Smaller size

Lack of membrane-bound organelles

Presence of a nucleus (correct)

Absence of genetic material

Which organelle is responsible for intracellular digestion and waste removal?

Lysosomes (A) Signup and view all the answers

What is a major function of the mitochondria in a cell?

Energy production (C) Signup and view all the answers

Which cell organelle is important for processing, packaging, and secreting proteins in the cell?

Endoplasmic reticulum (D) Signup and view all the answers

What distinguishes eukaryotic cells from prokaryotic cells in terms of organelles?

Eukaryotic cells possess membrane-bound organelles while prokaryotic cells do not. (B) Signup and view all the answers

What is the primary function of plastids in a cell?

Photosynthesis (C) Signup and view all the answers

Explain the difference between skeletal muscles and smooth muscles in terms of their structure and function.

Skeletal muscles are striated, voluntary muscles attached to bones for movement, while smooth muscles are non-striated, involuntary muscles found in internal organs for involuntary movements. Signup and view all the answers

Describe the unique features of cardiac muscles and explain why they are different from skeletal and smooth muscles.

Cardiac muscles are striated, involuntary muscles found only in the heart. They have intercalated discs for synchronized contractions and are self-excitable. Signup and view all the answers

How does the structure of muscular tissues differ from other tissues in the human body?

Muscular tissues are specialized for contraction and relaxation, containing specialized proteins like actin and myosin which allow for movement. Signup and view all the answers

Explain the concept of involuntary movements and provide examples of muscular tissues involved in such movements.

Involuntary movements are actions that occur without conscious control. Examples include peristalsis in the digestive system (smooth muscles) and heart contractions (cardiac muscles). Signup and view all the answers

How does meristematic tissue play a role in the growth of plant roots?

Meristematic tissue is responsible for cell division and growth in plant roots. It is located at the root tips and allows for continuous root elongation. Signup and view all the answers

Discuss the significance of apical meristem in plant growth and development.

Apical meristem is found at the tips of plant roots and shoots, enabling primary growth in length. It is essential for the vertical growth of plants. Signup and view all the answers

What is the role of intercalary meristem in plant tissues, and where is it typically located?

Intercalary meristem is responsible for growth at the base of leaves and internodes in plants. It allows for regrowth after damage and contributes to plant elongation. Signup and view all the answers

Explain why the growth of roots in onions stops when the tips are cut in jar 2.

Cutting the root tips removes the apical meristem, which is responsible for root growth. Without the meristematic tissue, new cell production halts, leading to root growth cessation. Signup and view all the answers

Why is the presence of meristematic tissues important for the growth of plants?

Meristematic tissues continuously produce new cells for growth and repair in plants. They are essential for primary and secondary growth processes. Signup and view all the answers

How do differentiated cells in plants originate from meristematic tissues, and what changes occur during this process?

Meristematic cells differentiate into specialized cells through a process of maturation and structural changes. These changes lead to the formation of various plant tissues with distinct functions. Signup and view all the answers