Q: What is the term for a pure substance that possesses unique properties and cannot be broken down into other substances? Read this paragraph and choose the correct option from the provided answers: An element is pure substance that cannot be broken down into other substances. Each element has a particular set of properties that, taken together, distinguish it from all other elements. Table below lists the major elements in the human body. As you can see, you consist mainly of the elements oxygen, carbon, and hydrogen. Choices: - alloy - plastic - light - element A:
element

Q: Plants can reproduce sexually and in which other way? Read this paragraph and choose the correct option from the provided answers: The life cycle of all plants is complex because it is characterized by alternation of generations. Plants alternate between diploid sporophyte and haploid gametophyte generations, and between sexual and asexual reproduction. The ability to reproduce both sexually and asexually gives plants the flexibility to adapt to changing environments. Their complex life cycle allows for great variation. A general plant life cycle is represented by the diagram in Figure below . From the figure, you can see that the diploid sporophyte has a structure called a sporangium (plural, sporangia) that undergoes meiosis to form haploid spores . A spore develops into a haploid gametophyte . The gametophyte has male or female reproductive organs that undergo mitosis to form haploid gametes (sperm or eggs). Fertilization of gametes produces a diploid zygote . The zygote grows and develops into a mature sporophyte, and the cycle repeats. Choices: - spontaneously - genetically - horizontally - asexually A:
asexually

Q: Q: What are insect parasites transmitted sexually? Read this paragraph and choose the correct option from the provided answers: Pubic lice , like the one in Figure below , are insect parasites that are transmitted sexually. They suck the blood of their host and irritate the skin in the pubic area. Choices: - chlamydia - pinworms - deer ticks - pubic lice A:
A: pubic lice

Question: Q: The cells of most eukaryotic and many prokaryotic organisms can carry out what type of respiration? Read this paragraph and choose the correct option from the provided answers: Choices: - anaerobic - kinetic - energetic - aerobic A:
Answer: aerobic

*Question*
Q: What are the four stages of food processing? Read this paragraph and choose the correct option from the provided answers: 41.2 The main stages of food processing are ingestion, digestion, absorption, and elimination. Choices: - ingestion, digestion, elimination and extinction - ingestion, digestion, absorption, and reproduction - ingestion, reproduction, absorption, and elimination - ingestion, digestion, absorption, and elimination A:
**Answer**
ingestion, digestion, absorption, and elimination

Q: Q: Wich disorder arises when defective valves allow blood to accumulate within the veins? Read this paragraph and choose the correct option from the provided answers: Edema may be accompanied by varicose veins, especially in the superficial veins of the legs (Figure 20.8). This disorder arises when defective valves allow blood to accumulate within the veins, causing them to distend, twist, and become visible on the surface of the integument. Varicose veins may occur in both sexes, but are more common in women and are often related to pregnancy. More than simple cosmetic blemishes, varicose veins are often painful and sometimes itchy or throbbing. Without treatment, they tend to grow worse over time. The use of support hose, as well as elevating the feet and legs whenever possible, may be helpful in alleviating this condition. Laser surgery and interventional radiologic procedures can reduce the size and severity of varicose veins. Severe cases may require conventional surgery to remove the damaged vessels. As there are typically redundant circulation patterns, that is,. Choices: - vascular disease - bulging veins - cataracts veins - varicose veins A:
A: varicose veins