What is an example of a prokaryotic cell?
Fungi
Bacteria
Plant cell
Protozoa
View Answer
Correct Answer: B — Bacteria
Explanation:
Bacteria are prokaryotic cells that lack a membrane-bound nucleus.
14 practice sets · Page 1 of 1
What is an example of a prokaryotic cell?
Fungi
Bacteria
Plant cell
Protozoa
Correct Answer: B — Bacteria
Explanation:
Bacteria are prokaryotic cells that lack a membrane-bound nucleus.
What is the function of the plasma membrane?
Produces energy
Stores genetic material
Regulates entry and exit of substances
Provides shape to the cell
Correct Answer: C — Regulates entry and exit of substances
Explanation:
The plasma membrane controls the movement of substances into and out of the cell.
What is the primary function of the Golgi apparatus?
Cellular respiration
Photosynthesis
Protein synthesis
Packaging and transport of materials
Correct Answer: D — Packaging and transport of materials
Explanation:
The Golgi apparatus modifies, packages, and transports proteins and lipids.
Which of the following is found only in animal cells?
Cell wall
Centrioles
Large central vacuole
Chloroplasts
Correct Answer: B — Centrioles
Explanation:
Centrioles are present in animal cells and help in cell division.
What are chromatin fibers made of?
DNA and proteins
RNA and proteins
Lipids and carbohydrates
DNA and lipids
Correct Answer: A — DNA and proteins
Explanation:
Chromatin consists of DNA wrapped around proteins called histones.
What is the main component of the cell wall in plants?
Lipid
Starch
Cellulose
Protein
Correct Answer: C — Cellulose
Explanation:
Plant cell walls are mainly composed of cellulose, which provides support and protection.
Which of these is a semi-permeable structure?
Cell wall
Ribosome
Cytoplasm
Plasma membrane
Correct Answer: D — Plasma membrane
Explanation:
The plasma membrane is semi-permeable and regulates the movement of substances into and out of the cell.
Which organelle is known as the powerhouse of the cell?
Golgi apparatus
Mitochondria
Ribosome
Nucleus
Correct Answer: B — Mitochondria
Explanation:
Mitochondria produce ATP, which supplies energy for cellular activities.
Which organelle is responsible for photosynthesis in plants?
Mitochondria
Ribosome
Chloroplast
Lysosome
Correct Answer: C — Chloroplast
Explanation:
Chloroplasts contain chlorophyll and carry out photosynthesis in plants.
What is the size range of prokaryotic cells?
0.1 µm
1 µm
2.5 µm
5 µm
Correct Answer: D — 5 µm
Explanation:
Prokaryotic cells are generally very small and range from 0.1 to 5 micrometers in size.
Which part of the cell controls all its activities?
Cytoplasm
Nucleus
Plasma membrane
Mitochondria
Correct Answer: B — Nucleus
Explanation:
The nucleus contains genetic material and controls cellular activities.
What is an example of a prokaryotic cell?
Protozoa
Fungi
Plant cell
Bacteria
Correct Answer: D — Bacteria
Explanation:
Bacteria are prokaryotes because they lack a true nucleus and membrane-bound organelles.
Which of the following is not a unicellular organism?
Hydra
Amoeba
Paramecium
Euglena
Correct Answer: A — Hydra
Explanation:
Hydra is a multicellular organism, whereas Amoeba, Paramecium, and Euglena are unicellular organisms.
What is the structural and functional unit of life?
Atom
Tissue
Cell
Molecule
Correct Answer: C — Cell
Explanation:
The cell is the fundamental unit of life and performs all essential functions such as growth, metabolism, and reproduction.