Q. Where is DNA located in a prokaryotic cell? 1. Nucleus 2. Nucleolus 3. Nucleoid 4. Mitochondria Answer: 3 (Nucleoid). Explanation: Prokaryotes do not have a nucleus, nucleolus, and mitochondria … Read more
Ta, Os, Rh are metals in the periodic table. Metals are chemical substances that share electrons to gain stability. They are good conductors and pass electricity and heat when they … Read more
Q. In the liver, detoxifying enzymes are localized in what organelle? 1) Lysosomes 2) Nucleolus 3) Mitochondria 4) Golgi apparatus 5) Smooth endoplasmic reticulum 6) Rough endoplasmic reticulum 7) Peroxisomes … Read more
How do enzymes speed up chemical reactions? Answer: Some amount of energy must be put in to get the reaction initiated. This energy is required to activate the substances to … Read more
Q. What is the role of enzymes in the DNA replication process? 1. Enzymes read the DNA code and build a new DNA molecule from scratch. 2. Enzymes link together … Read more
Q. The junction between the axon of one neuron and the dendrite of the next is called 1. Constant bridge 2. Synapse 3. Joint 4. Junction point Answer: 2 (Synapse). … Read more
In general, enzymes are what kinds of molecules? 1) Nucleic acids 2) Carbohydrates 3) Lipid molecules 4) Proteins Answer: (4) Proteins Explanation: Enzymes are bio-active protein molecules found in the … Read more
Q. Lyme disease can be spread through which mode of transmission? 1. Through the air (Lyme disease is an airborne disease). 2. Through the water (Lyme disease is a waterborne … Read more
A major side effect that stress can cause on the gastrointestinal system is? 1. Reduced levels of gastrin, leading to constipation 2. Reduced levels of cortisol, causing weight loss 3. … Read more
Q. The brain structure that is associated with the formation of memories is the? 1. Cerebral cortex 2. Cerebellum 3. Hippocampus 4. Thalamus 5. Hypothalamus Answer: 3 (Hippocampus). Explanation: The … Read more