Welcome to your Grade 9 Biology chapter 3
After carefully reading the following 30 questions, choose the correct answer.
1.
Who was the first person to observe cells and name them in 1665?
2.
Which scientist stated that all animals are made up of cells in 1839?
3.
According to cell theory, where do cells arise from?
4.
Which organelle is often described as the "powerhouse" of the cell?
5.
What is the largest organelle in a eukaryotic cell that controls all activities?
6.
Which structure is found only in plant cells and provides a rigid outer layer?
7.
Which organelle is responsible for photosynthesis in plant cells?
8.
What are the small structures attached to Rough ER that make proteins?
9.
The movement of substances from high to low concentration without energy is:
10.
Which organelle functions in the collection, packaging, and distribution of molecules?
11.
What are groups of similar cells that perform the same function called?
12.
Which organelle contains digestive enzymes to recycle cell materials?
13.
Which structure is found in animal cells but typically absent in plant cells?
14.
What is the semifluid substance within the plasma membrane called?
15.
Which organelle is involved in lipid synthesis and detoxification?
16.
What is the function of the nucleolus?
17.
Movement of molecules against a concentration gradient using energy is called:
18.
Which of these is an organ in flowering plants?
19.
Which type of cells lack a nucleus as they mature?
20.
What is the thin, flexible barrier that surrounds all cells?
21.
Which organelle gives support and maintains the shape of the cell?
22.
Small sacs used for transport within the cell are called:
23.
Which organelle is large and permanent in plant cells, helping with water regulation?
24.
What are the thread-like structures made of DNA and proteins in the nucleus?
25.
Which level of organization is represented by the stomach and intestine working together?
26.
What did Rudolf Virchow contribute to the cell theory?
27.
Appendages that aid in cell movement are:
28.
Which dye is commonly used to stain cheek cells to make the nucleus visible?
29.
The fluid in the plant vacuole is a solution containing:
30.
Who described the Golgi structure in 1898?
