Q: A voltaic cell uses what type of reaction to generate an electric current Read this paragraph and choose the correct option from the provided answers: A voltaic cell uses a spontaneous redox reaction to generate an electric current. It is also possible to do the opposite. When an external source of direct current is applied to an electrochemical cell, a reaction that is normally nonspontaneous can be made to proceed. Electrolysis is the process in which electrical energy is used to cause a nonspontaneous chemical reaction to occur. Electrolysis is responsible for the appearance of many everyday objects such as gold-plated or silver-plated jewelry and chrome-plated car bumpers. Choices: - spontaneous catalyst - chemical reaction - instantaneous redox - spontaneous redox A:
spontaneous redox

Q: What is the name for a series of changes in the reproductive system of mature females that repeats every month on average? Read this paragraph and choose the correct option from the provided answers: Egg production in the ovary is part of the menstrual cycle. The menstrual cycle is a series of changes in the reproductive system of mature females that repeats every month on average. These changes include the development of an egg and follicle in the ovary. Choices: - periodic table - urinary cycle - puberty - menstrual cycle A:
menstrual cycle

Q: Q: During what do homologous chromosomes separate and go to different daughter cells? Read this paragraph and choose the correct option from the provided answers: Overview of Meiosis. During meiosis, homologous chromosomes separate and go to different daughter cells. This diagram shows just the nuclei of the cells. Notice the exchange of genetic material that occurs prior to the first cell division. Choices: - birth - mitosis - electrolysis - meiosis A:
A: meiosis

Question: Q: What is the outer layer of skin, consisting almost entirely of epithelial cells? Read this paragraph and choose the correct option from the provided answers: The epidermis is the outer layer of skin, consisting of epithelial cells and little else (see Figure below ). For example, there are no nerve endings or blood vessels in the epidermis. The innermost cells of the epidermis are continuously dividing through mitosis to form new cells. The newly formed cells move up through the epidermis toward the skin surface, while producing a tough, fibrous protein called keratin. The cells become filled with keratin and die by the time they reach the surface, where they form a protective, waterproof layer called the stratum corneum. The dead cells are gradually shed from the surface of the skin and replaced by other cells. Choices: - hypodermis - connective tissue - dermis - epidermis A:
Answer: epidermis

*Question*
Q: What vesicles store neurotransmitters? Read this paragraph and choose the correct option from the provided answers: Secretory Vesicles contain materials that are to be excreted from the cell, such as wastes or hormones . Secretory vesicles include synaptic vesicles and vesicles in endocrine tissues. Synaptic vesicles store neurotransmitters. They are located at presynaptic terminals in neurons. When a signal reaches the end of an axon, the synaptic vesicles fuse with the cell membrane and release the neurotransmitter. The neurotransmitter crosses the synaptic junction, and binds to a receptor on the next cell. Some cells also produce molecules, such as hormones produced by endocrine tissues, needed by other cells. These molecules are stored in secretory vesicles and released when needed. Secretory vesicles also hold enzymes needed to make extracellular structures, such as the extracellular matrix of animal cells. Choices: - hydrophobic - dendritic - Golgi apparatus - synaptic A:
**Answer**
synaptic

(Question)
Q: What type of response do signal transductions within target cells bring about? Read this paragraph and choose the correct option from the provided answers: Choices: - resporatory - bacterial - psychological - physiological A:
(Answer)
physiological