Prokaryotes vs Eukaryotes
Which type of cell does not have a nucleus: prokaryotic or eukaryotic?
Prokaryotic cell
Which organelle is known as the "control center" containing the genetic material in a eukaryotic cell?
Nucleus
Which plant tissue has rapidly dividing cells that help in plant growth?
Meristematic tissue
Which animal tissue makes up the brain and nerves, controlling all body processes by nerve impulses?
Nervous tissue
On average, how many cells are in the human body?
75 trillion cells
Name the two main parts/layers that are found on the outer surface of a bacterial cell according to the diagram.
Cell wall and cell membrane
Which organelle produces energy for cell activities?
Mitochondria
Which plant tissue produces flower nectar and smell?
Secretory tissue
Which tissue covers and protects the body and internal organs, and protects skin cells from harmful ultraviolet lights?
Epithelial tissue
What is the formula to calculate Total Magnification on a light microscope?
Total magnification=ocular lens×objective lens
How many times bigger are eukaryotic cells compared to prokaryotic cells?
20–100 times bigger
What is the function of the vacuole?
It is a storage organelle covered by a thin membrane.
Name the two main functions of ground tissue in plants.
Does photosynthesis and stores food/useful materials
Which animal tissue is responsible for the movement of the body and internal organs (e.g., biceps, heart)?
Muscular tissue
Name the smallest known bacteria mentioned in the textbook and its diameter.
Mycoplasma (about 0.2–0.3 µm / 1 mm = 1000 µm)
Which tiny organelle responsible for protein production is present in BOTH prokaryotic and eukaryotic cells?
Ribosome
Which organelle receives, modifies, and packs materials produced by the endoplasmic reticulum?
Golgi apparatus
What are the two types of ground tissue shown in the leaf structure diagram?
Palisade mesophyll and spongy mesophyll
Give two examples of connective tissue found in the human body.
Blood and bone tissue
How long is the longest nerve cell of a Blue whale?
10–30 meters long
Explain the main difference in how genetic material is stored in prokaryotic cells compared to eukaryotic cells.
In prokaryotic cells, genetic material is located in the cytoplasm and not covered by a membrane; in eukaryotic cells, it is inside the nucleus.
What organelle contains digestive enzymes inside to carry out intracellular digestion?
Lysosome
Which plant tissue provides hardness to plants and prevents them from breaking?
Mechanical tissue
What are the main functions of connective tissue according to the textbook?
Connects organs, gives hardness and protection, and helps in the transportation of materials in the body.
To how many other cells can a single "Socialite" nerve cell connect?
Up to 10,000 cells