20. All living things must maintain a constant internal environment to function

Question

20. All living things must maintain a constant internal environment to function properly through the process of __. (Points : 2)        metamorphosis
       alkalosis
       homeostasis
       cryogenesis Question 21.21. Glucose, fructose, sucrose, starch and glycogen are all examples of ___. (Points : 2)        proteins
       carbohydrates
       lipids
       nucleic acids Question 22.22. Some insects can "walk on water" because __. (Points : 2)        water has a high surface tension
       water is adhesive
       water is transparent
       water expands when it freezes Question 23.23. To overcome an energy barrier between reactants and products in a chemical reaction, energy must be provided to get the reaction started. This energy is called ___ energy. (Points : 2)        potential
       reaction
       initiation
       activation Question 24.24. Where in the cell does glycolysis takes place? (Points : 2)        lysosomes
       cytoplasm
       mitochondria
       nucleus Question 25.25. Photosynthesis uses sunlight to convert water and carbon dioxide into __. (Points : 2)        carbon dioxide and water
       oxygen and sugars
       proteins and sugars
       carbon dioxide and oxygen Question 26.26. The _____ of photosynthesis are the _____ of cellular respiration. (Points : 2)        electrons, protons
       pigments, products
       products, reactants
       elements, atoms Question 27.27. The energy currency of the cell is __. (Points : 2)        glucose
       ATP
       starch
       glycogen Question 28.28. When blood glucose levels decrease (as between meals), what reserves are tapped first? (Points : 2)        glycogen
       fats
       steroids
       amino acids Question 29.29. When glucose is used as an energy source, the largest amount of ATP is produced by the ____ portion of the entire respiratory process. (Points : 2)        glycolytic
       Kreb's cycle
       acetyl-CoA formation
       electron transport chain Question 30.30. Pyruvic acid can be regarded as the end product of ____. (Points : 2)        glycolysis
       fermentation
       the Kreb cycle
       the electron transport chain Question 31.31. How can one increase the rate of a chemical reaction? (Points : 2)        Increase the activation energy.
       Cool the reactants.
       Decrease the pH.
       Add an enzyme (catalyst). Question 32.32. A prokaryote has ___. (Points : 2)        membrane-bound organelles
       nucleus
       mitochondria
       a cell membrane Question 33.33. Unlike animal cells, plant cells have __. (Points : 2)        cell membranes
       cell walls
       chromosomes
       mitochondria Question 34.34. Which of the following requires energy to move molecules across the cell membrane? (Points : 2)        diffusion
       osmosis
       active transport
       passive transport Question 35.35. The ___ is the site of protein synthesis. (Points : 2)        nucleus
       ribosome
       mitochondrion
       cytoskeleton Question 36.36. Diffusion of water through a semipermeable membrane is called __. (Points : 2)        osmosis
       diffusion
       active transport
       passive transport Question 37.37. Which component of a cell membrane is likely to function as a transporter? (Points : 2)        cholesterol
       lipids
       proteins
       carbohydrates Question 38.38. If potato slice is placed in distilled water, the cells would most likely __. (Points : 2)        lose water and become limp
       neither take up water or lose water
       take up water and swell
       transport water into the cell by active transport. Question 39.39. The chloroplast functions in ___. (Points : 2)        protein synthesis
       lipid storage
       DNA replication
       photosynthesis Question 40.40. The fluid mosaic model presents the modern view of ___. (Points : 2)        the cell membrane structure
       chromosome movement during mitosis
       protein synthesis
       ATP production Question 41.41. During which stage of mitosis do nucleoli reappear and the nuclear membrane reforms? (Points : 2)        prophase
       metaphase
       anaphase
       telophase Question 42.42. During which stage of mitosis do chromatids separate to form two sets of daughter chromosomes? (Points : 2)        prophase
       metaphase
       anaphase
       telophase Question 43.43. Which of the following is the longest stage of mitosis? (Points : 2)        prophase
       metaphase
       anaphase
       telophase Question 44.44. When during the cell cycle is DNA replicated? (Points : 2)        metaphase
       Synthesis phase (S)
       G1
       cytokinesis Question 45.45. A cell with 10 chromosomes undergoes mitosis and cell division. How many daughter cells are produced and what number of chromosomes do they have? (Points : 2)        4 daughter cells, 20 chromosomes each
       4 daughter cells, 5 chromosomes each
       2 daughter cells, 10 chromosomes each
       2 daughter cells, 5 chromosomes each Question 46.46. Maize (corn) has a haploid number of 10. How many chromosomes are in a zygote of maize? (Points : 2)        5
       10
       20
       Not enough information provided Question 47.47. Crossing over is one of the most important events in meiosis because __. (Points : 2)        homologous chromosomes are separated into different daughter cells
       the number of chromosomes allotted to each daughter cell must be halved
       sister chromatids must be separated into different daughter cells
       it produces new arrays of alleles on chromosomes and contributes to genetic diversity Question 48.48. While viewing stained onion root tip cells you notice that distinct chromosomes cannot be observed in most of the cells. This is because most of the cells ___. (Points : 2)        were killed while preparing the slide
       are in Interphase
       are in metaphase
       are undergoing Meiosis Question 49.49. Each offspring cell produced by binary fission contains __. (Points : 2)        half the chromosomes of the original cell
       twice as many chromosomes as the original cell
       an independent assortment of the original cell's chromosomes
       an identical copy of the original cell's chromosome. Question 50.50. A DNA strand has the sequence A-C-A-G-C-C-G-T-A. What would be its complementary strand? (Points : 2)        G-T-G-A-T-T-A-C-G
       A-C-A-G-C-C-G-T-A
       T-G-T-C-G-G-C-A-T
       U-G-U-C-G-G-C-A-U 20. All living things must maintain a constant internal environment to function properly through the process of __. (Points : 2)        metamorphosis
       alkalosis
       homeostasis
       cryogenesis

Explanation / Answer

20. Homeostasis

21. carbohydrates

22. water has a high surface tension

23. Activation Energy

24. Cytoplasm

25. oxygen and sugars

26. products, reactants

27. ATP

28. Glycogen

29. electron transport chain

30. glycolysis

31. Add an enzyme (catalyst)

32. a cell membrane

33. cell wall

34. active transport

35. Ribosome

36. Osmosis

37. proteins

38. take up water and swell

39. photosynthesis

40. Cell membrane structure

41. telophase

42. anaphase

43. prophase

44. synthesis phase

45. 2 daughter cells, 10 chromosomes each

46. 20

47. it produces new arrays of alleles on chromosomes and contributes to genetic diversity

48. are in Interphase

49. an identical copy of the original cell's chromosome.

50. T-G-T-C-G-G-C-A-T

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.