Answer the following question given this paragraph: Geneticist Many diseases arise from genetic mutations that prevent the synthesis of critical proteins. One such disease is Lowe disease (also called oculocerebrorenal syndrome, because it affects the eyes, brain, and kidneys). In Lowe disease, there is a deficiency in an enzyme localized to the Golgi apparatus. Children with Lowe disease are born with cataracts, typically develop kidney disease after the first year of life, and may have impaired mental abilities. Lowe disease is a genetic disease caused by a mutation on the X chromosome. The X chromosome is one of the two human sex chromosome, as these chromosomes determine a person's sex. Females possess two X chromosomes while males possess one X and one Y chromosome. In females, the genes on only one of the two X chromosomes are expressed. Therefore, females who carry the Lowe disease gene on one of their X chromosomes have a 50/50 chance of having the disease. However, males only have one X chromosome and the genes on this chromosome are always expressed. Therefore, males will always have Lowe disease if their X chromosome carries the Lowe disease gene. The location of the mutated gene, as well as the locations of many other mutations that cause genetic diseases, has now been identified. Through prenatal testing, a woman can find out if the fetus she is carrying may be afflicted with one of several genetic diseases. Geneticists analyze the results of prenatal genetic tests and may counsel pregnant women on available options. They may also conduct genetic research that leads to new drugs or foods, or perform DNA analyses that are used in forensic investigations. Q: Many diseases arise from genetic mutations that prevent the synthesis of critical what? Choices: - oils - acids - lipids - proteins A:
proteins
(Question)
Answer the following question given this paragraph: When humans reproduce, there are two parents involved. DNA must be passed from both the mother and father to the child. Humans cannot reproduce with just one parent; humans can only reproduce sexually. But having just one parent is possible in other eukaryotic organisms, including some insects, fish, and reptiles. These organisms can reproduce asexually, meaning the offspring ("children") have a single parent and share the exact same genetic material as the parent. This is very different from reproduction in humans. Bacteria, being a prokaryotic, single-celled organism, must reproduce asexually. Q: What type of reproduction produces offspring from a single parent that share the exact same genetic material as the parent? Choices: - mutation - microscopic reproduction - sexual reproduction - asexual reproduction A:
(Answer)
asexual reproduction
Ques: Answer the following question given this paragraph: Replacement reactions occur when elements switch places in compounds. In a single replacement reaction, one element takes the place of another in a single compound. In a double replacement reaction, two compounds exchange elements. Q: What occur when elements switch places in compounds? Choices: - chemical interaction - chain reaction - chemical reaction - replacement reactions A:
Ans: replacement reactions
(Q).
Answer the following question given this paragraph: Four underlying principles form the basis of biology. They are cell theory, gene theory, homeostasis, and evolution. Q: How many underlying principles does the science of biology have? Choices: - five - three - eleven - four A:
(A).
four
Ques:Answer the following question given this paragraph: After an adaptive defense is produced against a pathogen, typically plasma cells first secrete IgM into the blood. BCRs on naive B cells are of the IgM class and occasionally IgD class. IgM molecules make up approximately ten percent of all antibodies. Prior to antibody secretion, plasma cells assemble IgM molecules into pentamers (five individual antibodies) linked by a joining (J) chain, as shown in Figure 42.23. The pentamer arrangement means that these macromolecules can bind ten identical antigens. However, IgM molecules released early in the adaptive immune response do not bind to antigens as stably as IgGs, which are one of the possible types of antibodies secreted in large quantities upon re-exposure to the same pathogen. Figure 42.23 summarizes the properties of immunoglobulins and illustrates their basic structures. Q: After an adaptive defense is produced against a pathogen, typically plasma cells first secrete immunoglobin, which constitutes about ten percent of all what? Choices: - parasites - hormones - allergies - antibodies A:

Ans:antibodies
Ques: Answer the following question given this paragraph: The components of a mixture keep their own identity when they combine. Therefore, they usually can be easily separated again. Their different physical properties are used to separate them. For example, oil is less dense than water, so a mixture of oil and water can be separated by letting it stand until the oil floats to the top. Other ways of separating mixtures are shown in Figure below and in the videos below. Q: The components of what keep their own identity when they combine and can usually be easily separated? Choices: - alloy - solution - compound - mixture A:
Ans:
mixture