SCIN 130 AMU Quiz 4 Introduction to Biology American Military University assistance is available on Domyclass
SCIN 130 AMU Quiz 4
| Part 1 of 8 – Part 3: Question 1 of 31 Which type of variable does not change during an experiment, and serves as a comparison point for all data points? A. independent B. control C. dependent D. random Question 2 of 31 What is the phenomenon when a fake treatment improves a patient’s condition simply because he or she expects that it will help, but not that it is helping? A. sample size B. positive result C. control group D. placebo effect Question 3 of 31 Why is randomization important in an experimental design? A. to reduce bias in the experiment B. to make it easier for the researcher to find participants C. to increase the number of sample units D. to shorten the time it takes for the experiment |
| Part 2 of 8 – Chapter 7 Question 4 of 31 Most animals and plants are diploid. What are cells containing two sets of chromosomes are referred to as? A. somatic B. gametes C. polyploid D. aneuploid Question 5 of 31 Tortoise shell cats have variegated coat colors caused by X inactivation and are always what? A. homozygous females B. homozygous males C. heterozygous females D. heterozygous males Question 6 of 31 Which event leads to a haploid cell in a life cycle? A. fertilization B. mutation C. meiosis D. alternation of generations Question 7 of 31 Meiosis produces daughter cells that are what? A. used to replace dead or damaged cells in the body B. for growth of the body C. functionally different in different parts of the body D. sexual reproduction Question 8 of 31 What is the condensation of X chromosomes into Barr bodies during embryonic development in females to compensate for the double genetic dose called? A. polyploidy B. aneuploidy C. X inactivation D. reduction Question 9 of 31 During meiosis the 23 pairs of human chromosomes assort independently. Approximately how many possible gametes result from a single person? A. 8 million B. 8,000 C. 23,000 D. 23 million |
| Part 3 of 8 – Chapter 8 Question 10 of 31 How many unique gametes could be produced through independent assortment by an individual with the genotype AABbCC? A. 8 B. 1 C. 2 D. 4 Question 11 of 31 In a cross between two heterozygous (Aa) individuals, what is the likely percentage of the offspring that will be homozygous dominant (AA)? A. 50% B. 25% C. 100% D. 75% Question 12 of 31 In humans, which of the following is not a sex-linked conditions? A. muscular dystrophy B. hemophilia C. some forms of color-blindness D. left or right handiness Question 13 of 31 How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCc? A. 2 B. 1 C. 4 D. 8 Question 14 of 31 In a cross between two heterozygous (Aa) individuals, what is the likely percentage of the offspring that will be homozygous? A. 75% B. 50% C. 100% D. 25% Question 15 of 31 What are gene variants at the same relative locations on homologous chromosome? A. linked B. codominant C. alleles D. homozygotes |
| Part 4 of 8 – Lecture ELF Question 16 of 31 What is the term for an individual with one dominant copy of a gene, and one recessive copy of the same gene? A. dominant B. heterozygote C. recessive D. homozygote Question 17 of 31 Red hair is controlled by three common alleles on one chromosome, all of which are recessive. The likelihood of having a child with red hair is thus quite low. What type of inheritance is this? A. Multiple B. Hierarchal C. Mendelian D. Hybrid Question 18 of 31 What is the central dogma of molecular biology? A. DNA is read by RNA, which is then read and proteins are produced B. Proteins can reproduce unassisted C. Proteins cycle through the cell, ending in RNA coiling D. RNA initiates DNA replication, which controls all aspects of life |
| Part 5 of 8 – Chapter 6 Question 19 of 31 What is the phase that not all cells enter, but is a phase where cells are not actively dividing? A. G2 B. G0 C. S D. G1 Question 20 of 31 What is the process of cell division called in prokaryotes? A. Single mutation B. Cytokinesis C. Binary fission D. Double fusion Question 21 of 31 In diploid organisms, chromosomes are in a matched pair. What is the term for these chromosomes? A. homologous B. dissimilar C. unrelated D. heterologous Question 22 of 31 Which type of human cells contain a half set of chromosomes (often written as n)? A. gamete B. nucleus C. chromosome D. genome Question 23 of 31 During which stage in interphase does DNA synthesis occur? A. S phase B. Mitosis C. G2 phase D. G1 phase Question 24 of 31 What are oncogenes? A. cells that cause a mass without negative effects B. normal cells that are visible on an X-ray C. genes that are responsible for hair loss D. genes that cause a cell to become cancerous |
| Part 6 of 8 – Lab Material Question 25 of 31 What was a big different between the fossils in layer 5 and those in layer 2? A. Layer 5 contained mostly fish without spines B. Layer 5 had fish that were mostly female C. Layer 2 contained mostly fish without spines D. Layer 2 had fish that were mostly female Question 26 of 31 Why did we use a line graph for the data in this experiment? A. They are used to represent continuous data B. It is the only type where time can be added C. You can compare one point in time D. They have an X and Y axis Question 27 of 31 What is one advantage to studying fossils? A. There is indication of what is occurring in real-time B. We can see long-term patterns C. There are no advantages to fossils D. We can alter current evolution Question 28 of 31 What score would you assign to a fossil specimen that has only one pelvic spine visible? A. absent B. reduced C. semi-absent D. complete Question 29 of 31 How many years separation does each layer in this fossilized stickleback lab represent? A. 1 million B. 3,000 C. 10,000 D. 1 billion |
| Part 7 of 8 – Lab Essay Question 30 of 31 In 2-3 sentences, what was the overall purpose of the lab for this week? |
| Part 8 of 8 – Lab Upload Question 31 of 31 8.0 Points Please upload your completed Lab Packet for this week. Make sure your name is on the top in the space provided. |