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Which of these statements is true regarding the way light travels? A. Sound travels faster than light. B. The speed of light is always the same regardless of the medium through which it travels. C. Light travels as both a wave and a particle. D. Light can not travel through a vacuum. - Correct Answers ✅C. Light travels as both a wave and a particle. Light is a curiosity in that it acts as both a wave and a particle. It only changes direction via reflection (bouncing off of something) or refraction (passing from one medium to another). In a vacuum, the speed of light is constant, but when passing through a medium that has an index of refraction different from a vacuum, light's speed slows. Which of these elements is liquid at room temperature? A. mercury B. zinc C. manganese D. magnesium - Correct Answers ✅A. mercury Mercury is the only one of the elements listed here that is liquid at room temperature. The element bromine also has this property. Where is the hyoid bone located? A. neck B. pelvis
C. rib cage D. leg - Correct Answers ✅A. neck The hyoid bone is located between the chin and thyroid cartilage. A person with AB- blood should not receive blood from which other blood type? A. B- B. A- C. O- D. AB+ - Correct Answers ✅D. AB+ Those with an AB- blood type should not receive blood from those with AB+ blood. Although both AB+ and AB- blood have A and B antigens, the person with AB- blood lacks a special protein, or "Rhesus" Factor (Rh), circulating in their blood. If they are given blood that has the Rh factor present, their body will make antibodies to this foreign substance and complications will occur. This is especially true in pregnancy situations where the mother is Rh- and the baby she is carrying is Rh+. Which blood type is considered the universal donor? A. O- B. O+ C. AB- D. AB+ - Correct Answers ✅A. O-
Endometriosis is a condition in which the tissue from the uterus (endometrium) grows in other parts of the body, such as the ovaries or bowel. If a woman has endometrial tissue in her ovary, the tissue bleeds and builds up over time, and as the blood ages it turns brown, hence the term "chocolate cyst." Which is not true of synovial joints? A. They are found in the intervertebral discs of the spinal column B. They have a fluid-filled capsule that surrounds their articulating surface C. They are the most common joint in the body D. They are the most moveable joint type in the body - Correct Answers ✅A. They are found in the intervertebral discs of the spinal column Instead of a synovial joint, the intervertebral discs of the spinal column form a fibrocartilaginous joint, which allows slight movement of the vertebrae of the spine. Ligaments connect _______. A. tendon to bone B. muscle to bone C. bone to bone D. muscle to bone - Correct Answers ✅C. bone to bone
Ligaments connect bone to bone, and tendons connect muscle to bone. What is the longest muscle in the human body? A. sartorius B. vastus medialis C. vastus lateralis D. adductor longus - Correct Answers ✅A. sartorius The longest muscle in the human body is the sartorius muscle, which is located in the anterior thigh. Which of these is not a part of the body's chemical defense system against infection? A. lysozyme B. agranulocyte C. urine D. hydrochloric acid - Correct Answers ✅B. agranulocyte Agranulocytes are a type of white blood cell and therefore are not a part of the body's chemical defense system. Which of these is considered an example of naturally acquired passive immunity? A. inactivated (killed) vaccine injection B. exposure to a disease and subsequent immunity
Which of these statements is true with regard to eukaryotic and prokaryotic cells? A. Prokaryotic cells can contain lysosomes B. Eukaryotic cells have mitochondria C. Prokaryotic cells can contain lysosomes and eukaryotic cells have mitochondria D. Prokaryotic cells have a nucleus - Correct Answers ✅B. Eukaryotic cells have mitochondria One of the major differences between eukaryotic cells and prokaryotic cells is that eukaryotic cells contain organelles, such as mitochondria and lysosomes, whereas prokaryotic cells do not. Positive feedback is a mechanism used by the body that results in amplification or enhancement of a signal that has already been activated. An example of this would be ____. A. the release of oxytocin to increase contractions during childbirth B. shivering to increase temperature C. slowing metabolism in response to starvation D. blood vessels regulating blood pressure - Correct Answers ✅A. the release of oxytocin to increase contractions during childbirth Contractions in childbirth are considered a positive feedback loop because each contraction stimulates the brain to release more oxytocin, which in turn stimulates more contractions. When placed in a hypotonic solution, what will a cell do?
A. shrink B. swell C. disintegrate D. remain the same - Correct Answers ✅B. swell Water always moves from areas of higher concentration to lower concentration. A hypotonic solution contains less solutes and more water than the contents inside of the cell, so water will move from outside of the cell to inside, causing it to swell. Which is not an effect of photo-oxidation? A. loss of surface smoothness B. increase in brittleness C. increase in tensile strength D. discoloration - Correct Answers ✅C. increase in tensile strength Photo-oxidation occurs when UV light and ozone break down the surface of polymers. The result is the material becoming more brittle and discolored and less strong and smooth. Using the Lewis-dot structure model, how many dots would carbon have? A. 6 B. 2 C. 4
What is the most abundant element in the Earth's crust? A. oxygen B. carbon C. hydrogen D. nitrogen - Correct Answers ✅A. oxygen Oxygen makes up about 47% of the Earth's crust, followed by silicon at 28%, aluminum at 8%, iron at 5%, calcium at 4%, and sodium and potassium, each at 3%. What is the most abundant element in the universe? A. nitrogen B. hydrogen C. oxygen D. helium - Correct Answers ✅C. oxygen Hydrogen is the most abundant element in the universe, followed by helium and then oxygen. A solution that contains the maximum amount of dissolved solute is said to be ____. A. unsaturated B. dilute C. saturated D. concentrated - Correct Answers ✅C. saturated
A saturated solution is one that has the maximum amount of solute dissolved into it. The change in state from a gas to liquid is called ____. A. vaporization B. condensation C. evaporation D. deposition - Correct Answers ✅B. condensation Condensation is the reverse of vaporization and can be observed when gas cools and becomes a liquid, such as when dew appears in the morning after the temperature drops at night. Which of these sentences contains a dependent clause? A. She told me she was hungry but wouldn't eat more. B. She said she is feeling hungry, but she is not going to eat. C. Although she is hungry, she is not going to eat. D. She is hungry but she's not going to eat. - Correct Answers ✅C. Although she is hungry, she is not going to eat. "Although she is hungry, she is not going to eat." is correct. A dependent clause begins with words such as although, since, if, when, and because. A dependent clause cannot stand on its own, so it may also be referred to as a "weak" clause. What would be considered the dependent clause in this sentence?
What is the simple predicate in this sentence? Heather never speaks to her anymore. A. speaks B. never C. her D. Heather - Correct Answers ✅A. speaks A simple predicate is the verb in the sentence—an action word. The word never describes the verb, Heather is the subject, and her is a pronoun. Which one is the correct verb form to use in this sentence? My shower ___ a leak Friday night. A. spranged B. sprang C. sprung D. spring - Correct Answers ✅B. sprang The action occurred in the past, therefore, sprang would be used because it is the simple past tense of the word spring. You would only use sprung if it was preceded by have, had, or has, as in "I noticed that my shower had sprung a leak." What is the correct form of the missing words?
The red car in the parking lot belonged to Sarah Jones. James knew that ____ car was new and fast. A. Sarah Joneses B. Sarah Jones C. Sarah Jone's D. Sarah Jones's or Sarah Jones' - Correct Answers ✅D. Sarah Jones's or Sarah Jones' Apostrophes show possession and one is needed here to show that the car belongs to Sarah Jones. Different references give various recommendations for doing this with words that end in s. Both of the versions in this answer choice are listed as correct methods by certain grammar authorities. Sarah Jone's would mean that Sarah Jone owns the car. Adding es to Jones would simply make Jones plural. Select the option which makes this sentence grammatically correct. The paid vacation benefit is available to ____ employees in the company. A. part and full-time B. part and full time C. part/ and full/time D. part- and full-time - Correct Answers ✅D. part- and full-time
X's, 1 V, and two II's, which means we have two 10's (20), one 5, and two 1's (2). Written mathematically, 20 + 5 + 2 = 27 What is (-5)2? A. 5 B. - C. 25 D. (-25)2 - Correct Answers ✅C. 25 25 is correct. In this situation you address the parenthesis and then the exponent, and the negatives would cancel each other out for a positive answer. What is x2x4? A. x B. x C. 2(x8) D. 2x6 - Correct Answers ✅B. x6 is correct because you add the exponents, 2+ It is assumed in math that terms will be presented in their simplest form. This one is not, so you would add the exponents to simplify it: 2 + 4 = 6, so x2x4=x6.
Lance makes $11.35 an hour and earns time and a half pay for every hour over 40. If Lance worked 47 hours this week, about how much will his paycheck be? Round to the hundredths place. A. $546. B. $ C. $573. D. $521.37 - Correct Answers ✅C. $573. $573.18 is correct because $11.35 an hour x 40 hours a week equals $454. Time and a half pay for Lance would be $17.025, and you figure that out by multiplying $11.35 an hour by 1.5. Then multiply $17.025 times 7 overtime hours to get $119.175. Lastly, add $454 and $119.175 and you will get $573.175. Rounded to the hundredth place would be $573.18. Dawn has a 20% off one shirt coupon at her favorite store. If she buys 3 shirts at $29.99 each and uses her coupon, how much will her total bill be? Round to the nearest hundredth. A. $89. B. $86. C. $83. D. $71.98 - Correct Answers ✅C. $83.
We then express half of N as 1/2(N) or N/2. The phrase 5 more than indicates the mathematical expression 5+. Putting terms together, we get the correct answer. |7|+|−2| = ____ Note: This problem shows the number -2 within an absolute value sign, not the number -21. A. 9 B. 5 C. 0 D. 14 - Correct Answers ✅A. 9 9 is the correct answer because the brackets around the numbers mean you are adding the absolute value of those numbers. The absolute value of a number is always positive, so: The absolute value of 7 is 7.The absolute value of -2 is 2.Therefore, the problem becomes: 7 + 2 = 9. Note: You will not do anything to signs outside the absolute value brackets, only those within them. (Absolute value brackets do not operate by the same rules as parentheses in math.) According to the theory of the same name, after the "Big Bang" there were only what two things? A. space and time B. matter and antimatter C. neutrons and electrons
D. mass and gravity - Correct Answers ✅B. matter and antimatter The Big Bang Theory attempts to explain the origins of the universe. According to the theory, a "big bang" produced matter and antimatter in equal quantities. A subatomic particle is ____ in relation to an atom. A. smaller B. denser C. faster D. bigger - Correct Answers ✅A. smaller Subatomic particles (which include neutrons, protons, and electrons) are much smaller than atoms. Who discovered the special theory of relativity? A. Albert Einstein B. Max Plank C. James Chadwick D. Alfred Nobel - Correct Answers ✅A. Albert Einstein The theory of relativity is one of physics' most famous theories and was proposed by Albert Einstein. A fresh egg will float in water when... A. always
