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SCI sec III Exam Review 1 - εξέταση
  • 1. Human cells have ____ chromosomes.
A) 23
B) 10
C) 46
D) 100
  • 2. The process of _________ begins at puberty.
A) meiosis
B) mitosis
C) myoasis
  • 3. Which of the following is NOT one of the four bases in DNA?
A) Thymine
B) Adenine
C) Quarantine
D) Cytosine
  • 4. Gamete cells are formed as a part of sexual reproduction.
A) false
B) true
  • 5. What type of cell does not reproduce asexually?
A) hair cell
B) sperm cell
C) blood cell
D) skin cell
  • 6. ________ results in 2 daughter cells that are identical to their mother cell.
A) meiosis
B) sexual reproduction
C) mitosis
D) puberty
  • 7. A chemical in the blood that brings a message to one or more organs is called:
A) Hormone
B) Getmehome
C) Chromosome
D) Lysosome
  • 8. Which of the following does NOT happen to men during puberty?
A) FSH & LH stimulate sex hormone production
B) Produces the hormone Testosterone
C) Produces the hormone Estrogen
D) Genital organs mature
  • 9. Which part of the male anatomy allows passage of sperm, as wide as a sewing thread, that leads into the abdomen where they widen into storage sacs?
A) seminal vesicle
B) prostate
C) vas deferens
D) epididymis
  • 10. Which part of the female anatomy allows passage of ova to uterus and passage of sperm from uterus?
A) cervix
B) fallopian tubes
C) vagina
D) ovaries
  • 11. Which part of the female anatomy allows passage of sperm, the passage of the shed endometrium and the passage of babies, is 3” long when not aroused, and is 5-6” long when aroused?
A) uterus
B) fallopian tubes
C) vagina
D) urethra
ortho
  • 12. Which isometric drawing matches with one of the orthographic projections (3-views)?
A) 6H
B) 1B
C) 2G
D) 2A
ortho
  • 13. Which orthographic projection (3-views) contains a hidden line?
A) 1
B) 2
C) 7
D) 6
  • 14. What type of line indicates the length of an object and looks like:
    <----- 5.6m-----> ?
A) dimension line
B) leader line
C) extension line
D) cutting plane line
  • 15. Which of the following lines would be drawn thick?
A) centre line
B) construction line
C) visible line
D) hatching
  • 16. Glands located in the stomach that secrete acid and enzymes to help break down proteins.
A) pancreas
B) intestinal glands
C) gastric glands
D) salivary glands
  • 17. Carbohydrates...
A) provide energy to fuel the muscles and brain, helps with digestive disorders.
B) help with growth, enzyme production and repair in the body.
C) maintain skin and hair, cushions vital organs, provides insulation.
D) regulate chemical reactions in the body.
  • 18. Which of the following statements about the digestive system is false?
A) The liver is the largest organ in the human body.
B) Bacteria lives in your intestines to help you break down food.
C) Your teeth and tongue are mechanical components of digestion.
D) The enzymes that break down your food are a mechanical component of digestion.
  • 19. __________ is a long narrow tube that absorbs most nutrients into the bloodstream.
A) esophagus
B) large intestine
C) stomach
D) small intestine
  • 20. A loaded hotdog at a baseball stadium has a nutritional content of the following:
    carbs 25g
    protein 13g
    fat 32g
    Keeping in mind that we get 4 calories/gram in carbs and proteins, and 9 calories/gram from fats, what is the caloric value of that hotdog?
A) 280 calories
B) 440 calories
C) 405 calories
D) 630 calories
  • 21. A substance that expands to fill its entire container is known as a ________.
A) gas or liquid
B) liquid
C) gas
D) solid
  • 22. Water droplets appear on your cold bathroom mirror after you take a shower. This is an example of what type of phase change?
A) Condensation
B) Solidification
C) Sublimation
D) Evaporation
  • 23. Emile pours 12 g of table salt, NaCl, into a graduated cylinder and adds water up to the 200 mL mark.
    What is the concentration of the salt solution?
A) 2.4 g/L
B) 0.6 g/mL
C) 33 g/mL
D) 60 g/L
  • 24. A substance has a volume of 15 cm3 and a density of 5 g/cm3. What is its mass?
A) 0.3 g
B) 20 g
C) 75 g
D) 3 g
  • 25. Which of the following statements is NOT true for a homogeneous mixture?
A) An example is air
B) An example is a chocolate chip cookie
C) A solution is an example of this type of mixture
D) It is impossible to distinguish the different parts in the mixture to the naked eye
  • 26. Which of the following is NOT a characteristic of a chemical change?
A) An odour is released
B) Reversible
C) A light or heat can be created
D) A precipitate may be formed
  • 27. You have 200 mL of a 300 g/L solution. You want to dilute it to 100 g/L. How much water should you ADD?
A) 600 mL
B) 6 L
C) 0.15 L
D) 400 mL
  • 28. How many atoms in two molecules of (NH4)_2SO2
A) 16
B) 26
C) 10
D) 13
  • 29. Does the following chemical reaction follow the law of conservation of mass? (Is it “balanced”)
    2FeCl3 + MgO --> Fe2O3 + MgCl2
A) No
B) Yes
  • 30. When we inhale, the diaphragm ___________ (or “pulls down”) which causes the pressure in the lungs to _________.
A) relaxes, increase
B) contracts, increase
C) contracts, decrease
D) relaxes, decrease
  • 31. This is the long tube comprised of supportive rings of cartilage (also known as the windpipe).
A) Esophagus
B) Bronchi
C) Nasal Passages
D) Trachea
  • 32. These tiny, blood-filled tubes exist throughout the interior of the lung, on the alveoli.
A) Hemogloben
B) Pleural Membranes
C) Capillaries
D) Bronchioles
  • 33. Which blood type is the universal receiver?
A) O+
B) AB-
C) AB+
D) O-
  • 34. Which of the following statements about blood is true?
A) Plasma is mostly composed of water.
B) There are more white blood cells than platelets.
C) The members of Swedish rock band ABBA chose their name based on their blood types.
D) The body is unable to regenerate blood that is donated via transfusion.
  • 35. Which of the following is NOT true about veins?
A) They have a thin layer of muscle lining their walls.
B) They carry blood away form the heart.
C) They have valves to stop the backflow of blood.
D) They carry blood back to the heart.
  • 36. Which of the following is TRUE for the heart?
A) The aorta pumps blood to the body.
B) The left side is poor in O2 and rich in CO2
C) The right ventricle receives blood from the left atrium.
D) The pulmonary vein pumps blood to the lungs to release CO2
  • 37. Which of the following is NOT true about the Lymphatic System?
A) This system is found only in the upper body, most prominently around the neck.
B) It helps circulate WBC that secrete antibodies or injest invaders.
C) Its fluid circulates in lymphatic vessels to evacuate cell waste.
D) Its role is to defend and protect the body.
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