Q: Evolution occurs because of changes in what over time? Read this paragraph and choose the correct option from the provided answers: We now know how variation in traits is inherited. Variation in traits is controlled by different alleles for genes. Alleles, in turn, are passed to gametes and then to offspring. Evolution occurs because of changes in alleles over time. How long a time? That depends on the time scale of evolution you consider. Choices: - mitochondria - genomes - atoms - alleles A:
alleles

(Question)
Q: What contain organelles common to other cells, such as a nucleus and mitochondria, and also have more specialized structures, including dendrites and axons? Read this paragraph and choose the correct option from the provided answers: Figure 16.19 Neurons contain organelles common to other cells, such as a nucleus and mitochondria. They also have more specialized structures, including dendrites and axons. Choices: - follicles - blood cells - muscle cells - neurons A:
(Answer)
neurons

Ques: Q: At what time of life does menopause occur? Read this paragraph and choose the correct option from the provided answers: The menstrual cycle includes events that take place in the ovary, such as ovulation. It also includes changes in the uterus, including menstruation. Menopause occurs when menstruation stops occurring, usually in middle adulthood. Choices: - old age - young adulthood - adolescence - in middle adulthood A:
Ans: in middle adulthood

(Q).
Q: What term is used to describe structures that are similar in unrelated organisms? Read this paragraph and choose the correct option from the provided answers: Analogous structures are structures that are similar in unrelated organisms. The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor. For example, the wings of bats and birds, shown in Figure below , look similar on the outside. They also have the same function. However, wings evolved independently in the two groups of animals. This is apparent when you compare the pattern of bones inside the wings. Choices: - reproductive - symbolic - isolated - analogous A:
(A).
analogous

Ques:Q: What type of acid is often used as a preservative for acidic foods such as fruit juices? Read this paragraph and choose the correct option from the provided answers: Benzoic acid crystals in polarized light are pictured above. Benzoic acid is widely used as a food preservative, either as the carboxylic acid or as the sodium benzoate salt. This compound is most effective when added to acidic foods such as fruit juices and soft drinks. The major industrial source of benzoic acid is the partial oxidation of toluene with oxygen. The process is inexpensive and environmentally benign. Choices: - hydrochloric acid - sulfuric acid - citric acid - benzoic acid A:

Ans:benzoic acid

Question: Q: A red blood cell will swell and burst when placed in a? Read this paragraph and choose the correct option from the provided answers: A cell that does not have a rigid cell wall, such as a red blood cell, will swell and lyse (burst) when placed in a hypotonic solution. Cells with a cell wall will swell when placed in a hypotonic solution, but once the cell is turgid (firm), the tough cell wall prevents any more water from entering the cell. When placed in a hypertonic solution, a cell without a cell wall will lose water to the environment, shrivel, and probably die. In a hypertonic solution, a cell with a cell wall will lose water too. The plasma membrane pulls away from the cell wall as it shrivels, a process called plasmolysis . Animal cells tend to do best in an isotonic environment, plant cells tend to do best in a hypotonic environment. This is demonstrated in Figure below . Choices: - acidic solution - exothermic solution - dissolved solution - hypotonic solution A:
Answer:
hypotonic solution