A bag holds 2.5 liters of fluid. How many milliliters is that?
2,500 mL There are 1,000 milliliters in 1 liter, so you multiply by 1,000. 2.5 × 1,000 = 2,500 mL.
What is 3/4 + 2/3?
1 5/12 Use a common denominator of 12: 3/4 = 9/12 and 2/3 = 8/12. 9/12 + 8/12 = 17/12, which is 1 and 5/12.
A liquid medicine contains 250 mg in every 5 mL. How many mL contain 400 mg?
8 mL Set up a proportion: 250 mg / 5 mL = 400 mg / x mL. Cross-multiply: 250x = 2,000, so x = 8 mL.
A patient’s dose is due at 1545 in military time. What is that in regular time?
3:45 p.m. Military time counts the hours from 0000 to 2359. For times after 1259, subtract 12 hours: 1545 − 1200 = 3:45 p.m.
Read the passage: “Hand washing is one of the simplest ways to stop the spread of infection. Germs on the hands can pass to door handles, phones and food, and then to other people. Washing with soap and water for at least 20 seconds removes many of these germs. When soap and water aren’t available, an alcohol-based hand sanitizer is a useful substitute.” What is the main idea?
Washing your hands is a simple, effective way to reduce the spread of germs. The first sentence states the main idea, and every other sentence supports it: how germs spread, how washing removes them, and what to use when you can’t wash.
Read the passage: “Hand washing is one of the simplest ways to stop the spread of infection. Germs on the hands can pass to door handles, phones and food, and then to other people. Washing with soap and water for at least 20 seconds removes many of these germs. When soap and water aren’t available, an alcohol-based hand sanitizer is a useful substitute.” According to the passage, when is hand sanitizer a good choice?
When soap and water aren’t available The last sentence says sanitizer is a useful substitute when soap and water aren’t available. That’s the only situation the passage gives.
Read the passage: “The city clinic opened in 2019. It serves about 300 patients a week. The waiting room is the most pleasant in the county. Most visits last less than 30 minutes.” Which sentence is an opinion?
The waiting room is the most pleasant in the county. “Most pleasant” is a personal judgment. People could disagree, and you can’t prove it. The other sentences can all be checked with records.
What does exacerbated mean in this sentence? The patient’s cough was exacerbated by the cold weather.
made worse To exacerbate something is to make it worse, usually a problem, symptom or condition that is already there.
What does bilateral mean?
Affecting both sides Bi- means two and lateral refers to the side, so bilateral means on both sides, like bilateral knee pain.
What does edematous mean in this sentence? The nurse noticed the patient’s ankles were edematous.
swollen with fluid Edema is swelling caused by fluid building up in the tissues, so edematous means swollen with fluid.
Choose the word that completes the sentence: Each of the students ___ a textbook.
has The subject is “each,” which is singular. “Of the students” is a phrase in the middle that doesn’t change that, so the verb must be singular too: has.
Which word in this sentence is an adverb? The nurse quickly checked the chart.
quickly An adverb describes a verb, an adjective or another adverb. “Quickly” tells you how the nurse checked, so it describes the verb.
Choose the word that completes the sentence: Between you and ___, the test was easier than I expected.
me “Between” is a preposition, and the pronoun after a preposition takes the object form. That’s “me,” not “I.”
Which part of the cell makes most of the cell’s ATP through cellular respiration?
Mitochondrion Mitochondria carry out the aerobic steps of cellular respiration, turning glucose and oxygen into ATP, the cell’s energy currency.
In DNA, adenine pairs with which base?
Thymine In DNA, adenine (A) always pairs with thymine (T), and guanine (G) pairs with cytosine (C).
A solution has a pH of 3. How is it described?
Acidic On the pH scale from 0 to 14, 7 is neutral. Anything below 7 is acidic and anything above 7 is basic, so a pH of 3 is acidic.
What does an element’s atomic number tell you?
The number of protons The atomic number is the number of protons in the nucleus. It defines the element: every carbon atom has 6 protons.
Which chamber of the heart pumps oxygen-rich blood out to the body?
Left ventricle Oxygen-rich blood returns from the lungs to the left atrium, moves into the left ventricle and is pumped out through the aorta to the body.
What is the functional unit of the kidney?
Nephron Each kidney has around a million nephrons. They filter the blood and form urine.
Which organ makes the hormone insulin?
Pancreas Beta cells in the pancreas make insulin. It helps move glucose from the blood into cells, which lowers blood sugar.