Correct Answer: C. four

Correct Answer: D. Monotremes

Explanation

Egg-laying mammals are rare, and are called monotremes (order monotremata). Marsupials are mammals that bear live young who continue to develop in a pouch. Most mammals are placental (such as humans), with live births and a placenta that facilitates nutrient and waste exchange between the mother and the fetus. Prokaryotes are microscopic single celled organisms lacking distinct nuclei and organelles. Autotrophs are organisms who make their own food (organic raw material) from inorganic energy sources.

Correct Answer: B. cotton

Correct Answer: B) exothermic

Correct Answer: B. bad look

Correct Answer: B. her national interests

Correct Answer: C) Antigens

Explanation

In this Biology question, we are asked to identify an option that does not protect the body from harmful effects caused by microorganisms. The options given are Anti toxin, Phagocytes, Antigens, and Antibodies. Anti toxin is a substance that is produced in response to a toxin and neutralizes its effects. Phagocytes are white blood cells that engulf and digest bacteria and other harmful microorganisms. Antibodies are proteins produced by the immune system that specifically recognize and bind to foreign substances, such as viruses or bacteria, and target them for destruction. On the other hand, antigens are substances that trigger the immune system's response by recognizing them as foreign. They are usually found on the surface of microorganisms and other foreign substances. While antigens are important in initiating the immune response, they do not protect the body from the harmful effects of disease-causing microorganisms. Therefore, option C, Antigens, is the correct answer to this question. It is important to note that the immune system is a complex system that involves various types of cells and molecules working together to protect the body from harmful microorganisms. Understanding the functions of these components is crucial in understanding how the immune system works to keep us healthy.

Correct Answer: D. duties and obligation

Correct Answer: A. N2,500.00

Correct Answer: A) dissolved chemicals, sugars, salts, pigments and crystals

Explanation

In a plant cell, there is a structure called a vacuole. This structure is like a bubble filled with fluid. The fluid inside the vacuole is called cell sap. The question is asking what can be found in the cell sap of a plant vacuole. Option A is the correct answer. The cell sap in a plant vacuole contains dissolved chemicals, sugars, salts, pigments, and crystals. These substances are important for the plant's growth and survival. The dissolved chemicals help to regulate the pH of the cell sap, which is important for many cellular processes. The sugars and salts are used for energy and cellular processes, while the pigments help to give plants their colors. Option B is incorrect because DNA and RNA are not found in the cell sap of a plant vacuole. These substances are mainly found in the nucleus of the cell. Waste products of metabolism, however, can be found in the cell sap. Option C is also incorrect because waste products of metabolism are not the only things found in the cell sap. Crystals and pigments are also present. DNA is only found in the nucleus of the cell, so it cannot be present in the cell sap. Option D is incorrect because while sugars and salts are present in the cell sap, DNA and RNA are not. RNA is found in the cytoplasm of the cell, while DNA is mainly found in the nucleus. In summary, the correct answer to the question is option A, which states that dissolved chemicals, sugars, salts, pigments, and crystals can be found in a plant vacuole's cell sap.