Ques: Q: Meiosis and mitosis are both preceded by one round of what? Read this paragraph and choose the correct option from the provided answers: Figure 11.7 Meiosis and mitosis are both preceded by one round of DNA replication; however, meiosis includes two nuclear divisions. The four daughter cells resulting from meiosis are haploid and genetically distinct. The daughter cells resulting from mitosis are diploid and identical to the parent cell. Choices: - internal fertilization - germination - cellular respiration - dna replication A:
Ans: dna replication

Ques: Q: What type of isotopes have short half-lives and are given in very low doses? Read this paragraph and choose the correct option from the provided answers: Radioisotopes are widely used in medical diagnosis. These isotopes need to have short half-lives so that they can be administered in very low doses, thus minimizing damage to cells. Choices: - stable isotopes - gasses - radionuclides - radioisotopes A:
Ans: radioisotopes

Ques: Q: What type of tissue produces and secretes several hormones involved in lipid metabolism and storage? Read this paragraph and choose the correct option from the provided answers: Adipose Tissue Adipose tissue produces and secretes several hormones involved in lipid metabolism and storage. One important example is leptin, a protein manufactured by adipose cells that circulates in amounts directly proportional to levels of body fat. Leptin is released in response to food consumption and acts by binding to brain neurons involved in energy intake and expenditure. Binding of leptin produces a feeling of satiety after a meal, thereby reducing appetite. It also appears that the binding of leptin to brain receptors triggers the sympathetic nervous system to regulate bone metabolism, increasing deposition of cortical bone. Adiponectinanother hormone synthesized by adipose cellsappears to reduce cellular insulin resistance and to protect blood vessels from inflammation and atherosclerosis. Its levels are lower in people who are obese, and rise following weight loss. Choices: - hormonal tissue - metabolism tissue - somatic tissue - adipose tissue A:
Ans: adipose tissue

Ques: Q: Exposure to toxins is most damaging during weeks 4 through 8 of the embryonic stage due to development of what during this period? Read this paragraph and choose the correct option from the provided answers: Embryonic Development (Weeks 48). Most organs develop in the embryo during weeks 4 through 8. If the embryo is exposed to toxins during this period, the effects are likely to be very damaging. Can you explain why? (Note: the drawings of the embryos are not to scale. ). Choices: - samples - faith - pain - organs A:
Ans:
organs