Which of the following plant possess centrioles in their cells?
Centrioles are barrel/cylindrical-shaped cell organelles found in the cytoplasm of many eukaryotic cells. They are found in paired and mainly composed of tubulin proteins. They […]
Cell
Which of the following NaCl solution is a hypotonic solution for RBC?
The 0.5% sodium chloride (NaCl) solution is a hypotonic solution for RBC. The isotonic solution for RBCs is 0.9% NaCl solution. Any solution that is […]
A high white blood cell count could indicate
A high white blood cell (WBC) number in the blood indicates Leukaemia. Leukaemia is also known as the cancer of the blood cells, particularly the […]
The globular head of myosin contains
Myosins (500,000 Da) are a family of motor proteins present in the muscles cell. They help in muscle contraction. Among different classes of myosin proteins, Myosin II is […]
Among the following stem cells, which are found in the umbilical cord?
The stem cells found in the umbilical cord are “Cord blood stem cells”. Stem cells show three basic characteristics. They are (i) Stem cells divided […]
Robert Hooke used the term cell in the year
British scientist Robert Hooke (1635-1703) coined the term “cell” in the year 1665. He introduced the term “cell” to name the microscopic honeycomb-like cavities in […]
The proteins involved in the movement of chromosomes towards the poles during cell division are
During cell division, tubulin proteins present in the spindle fibers regulate the movement of chromosomes towards the poles. Prometaphase is a transition phase between the […]
Which one of the following is not a constituent of cell membrane?
The plasma membrane is a thin membrane that surrounds and protects a living cell. It is present in every living cells (bacteria, plants, and animals). […]
The cancer-causing agents are called
The cancer-causing agents are called carcinogens. The carcinogen may be any substance, molecules, radiation, gas, or pollution that promotes the formation or development of cancer. Many radioactive substances emitted […]
Mitosis occurs in
Mitosis is a process where a single cell divides into two genetically identical daughter cells in which the total number of chromosomes is maintained. Thus, the […]