1.
A bacterial cell belongs to which group.
Correct Answer
A. Prokaryote
Explanation
A bacterial cell belongs to the group of prokaryotes. Prokaryotes are single-celled organisms that lack a nucleus and membrane-bound organelles. Bacteria have a simple cell structure, with genetic material floating freely in the cytoplasm. This distinguishes them from eukaryotes, which have a more complex cell structure with a nucleus and membrane-bound organelles. Mitochondrion is a specific organelle found in eukaryotic cells, not a group. "Boys II Men" is not a scientific term and does not relate to the classification of cells.
2.
The _____________ provides protection for plant and bacterial cells.
Correct Answer
C. Cell wall
Explanation
The cell wall provides protection for both plant and bacterial cells. It is a rigid layer located outside the cell membrane that provides structural support and helps maintain the shape of the cell. The cell wall also acts as a barrier, preventing the entry of harmful substances and protecting the cell from mechanical damage. In addition, the cell wall plays a role in cell-to-cell communication and provides resistance against osmotic pressure changes.
3.
Eukaryotes differ from prokaryotes based on size, genetic material surrounded by a nuclear membrane, and membrane-bound organelles.
Correct Answer
A. True
Explanation
Eukaryotes are organisms that have cells with a nucleus, which is surrounded by a nuclear membrane. They also have membrane-bound organelles, such as mitochondria and endoplasmic reticulum. Prokaryotes, on the other hand, do not have a nucleus or membrane-bound organelles. Therefore, the statement that eukaryotes differ from prokaryotes based on size, genetic material surrounded by a nuclear membrane, and membrane-bound organelles is true.
4.
Two major forms of Prokaryotic cells is __________ and __________
Correct Answer
B. Eubacteria and Archae
Explanation
The correct answer is Eubacteria and Archae. Prokaryotic cells are characterized by the absence of a nucleus and membrane-bound organelles. Eubacteria and Archae are the two major forms of prokaryotic cells. Eubacteria are commonly found in various environments and include many familiar bacteria. Archae, on the other hand, are known to inhabit extreme environments and have unique characteristics that distinguish them from other organisms.
5.
Eukaryotes are ___________, while Prokaryotes are _____________
Correct Answer
D. Multicellular, unicellular
Explanation
Eukaryotes are multicellular, meaning they are composed of multiple cells, while Prokaryotes are unicellular, meaning they are composed of a single cell. This distinction is based on the complexity of their cellular structure and organization. Eukaryotes have a nucleus and other membrane-bound organelles, allowing for specialized functions within different cells, while Prokaryotes lack these membrane-bound structures and have a simpler cellular organization.
6.
Eukaryotic cells are the most abundant on Earth.
Correct Answer
B. False
Explanation
Eukaryotic cells are not the most abundant on Earth. Prokaryotic cells, which are simpler and smaller in structure, are actually more abundant. Prokaryotes can be found in various environments including soil, water, and even inside other organisms. Eukaryotic cells, on the other hand, are larger and more complex, and are found in organisms such as plants, animals, and fungi. While eukaryotic cells are certainly important and diverse, they are not the most abundant type of cell on Earth.
7.
Eukaryotes are animals, protists, fungi, and plant cells.
Correct Answer
A. True
Explanation
Eukaryotes are a diverse group of organisms that include animals, protists, fungi, and plant cells. These organisms have a complex cellular structure, with a nucleus enclosed within a membrane. This allows them to carry out more complex functions compared to prokaryotes, which lack a nucleus. Therefore, the statement that eukaryotes include animals, protists, fungi, and plant cells is true.
8.
Eukaryotes replicate by a process called _________ and __________
Correct Answer
B. Mitosis and meiosis
Explanation
Eukaryotes replicate through two main processes: mitosis and meiosis. Mitosis is a form of cell division where a single cell divides into two identical daughter cells, each with the same number of chromosomes as the parent cell. This process is responsible for growth, repair, and asexual reproduction in eukaryotes. Meiosis, on the other hand, is a specialized form of cell division that occurs in the reproductive cells (gametes). It involves two rounds of division, resulting in the formation of four daughter cells with half the number of chromosomes as the parent cell. Meiosis is essential for sexual reproduction and genetic diversity in eukaryotes.
9.
Prokaryotes replicate by a process called _____________
Correct Answer
A. Binary fission
Explanation
Prokaryotes replicate by a process called binary fission. This is a form of asexual reproduction where the prokaryotic cell divides into two identical daughter cells. During binary fission, the DNA of the prokaryote is replicated, and the cell membrane and cytoplasm divide, resulting in the formation of two separate cells. This process allows prokaryotes, such as bacteria, to rapidly reproduce and increase their population size. Meiosis, photosynthesis, and respiration are not involved in the replication of prokaryotes.
10.
The word Eukaryote means "having a true nucleus."
Correct Answer
A. True
Explanation
The statement is true because the term "Eukaryote" refers to organisms that have cells with a true nucleus, which means that their genetic material is enclosed within a membrane-bound nucleus. This is in contrast to prokaryotes, which are organisms that lack a true nucleus and have their genetic material floating freely in the cytoplasm. Therefore, the definition of "Eukaryote" aligns with the meaning of "having a true nucleus."