Lembaran formula, langkah kaedah utama untuk setiap topik dan 16 soalan latihan, dengan penyelesaian penuh di bahagian belakang.
“Before the nurse entered the isolation room, she put on a gown, gloves and a mask. When she left, she removed them and washed her hands.” What is the most likely reason for these steps?
A patient reads: “Fast for 8 hours before the blood test. You may drink water. Do not eat, chew gum or drink coffee.” The test is at 9 a.m. What is the latest time the patient may eat?
Berapa minit x dalam 3 hari?
Dalam sesuatu kursus, kerja rumah dikira 15%, peperiksaan pertengahan 35% dan peperiksaan akhir 50% daripada gred. Seorang pelajar mendapat 87% dalam kerja rumah, 90% dalam peperiksaan pertengahan dan 60% dalam peperiksaan akhir. Berapakah gred kursus G? Bundarkan kepada satu tempat perpuluhan.
Jenis epitelium manakah yang melapisi pundi kencing?
Struktur manakah yang melalui kanal inguinal pada lelaki?
Apakah kesan utama aldosteron pada buah pinggang?
Orang yang sihat berdiri dengan cepat selepas berbaring. Tindak balas refleks manakah yang mencegah pengsan?
A solution of pH 4 is compared with a solution of pH 6. How many times more hydrogen ions does the pH 4 solution have?
Parts of a protein chain coil into alpha helices and fold into beta sheets, held by hydrogen bonds. Which level of protein structure is this?
In the balanced equation __Mg + __HCl → __MgCl₂ + __H₂, what is the coefficient of HCl?
Which list puts fluorine, chlorine and bromine in order of increasing electronegativity?
Choose the correct word: “Of all the students, Kim studies the ___.”
Which revision correctly fixes the comma splice? “The patient felt better, therefore she went home.”
Choose the meaning of the word in bold: “The fever subsided overnight.”
Which word is the opposite of hypertrophy?
Jawapan: A · To prevent the spread of infection
Isolation rooms are used to stop infections spreading. Protective equipment and handwashing reduce the spread of germs.
Jawapan: C · 1 a.m.
9 a.m. minus 8 hours is 1 a.m., so the patient may eat until 1 a.m. and then only drink water.
Jawapan: x = 4320 min
Penukaran unit: darabkan dengan faktor yang sama dengan 1, ditulis supaya unit lama terbatal: 3 ft × 12 in/1 ft = 36 in. Panjang metrik: 1 km = 1000 m, 1 m = 100 cm = 1000 mm, 1 cm = 10 mm. Unit adat AS: 1 ft = 12 in, 1 yd = 3 ft, 1 mi = 5280 ft; 1 gal = 4 qt, 1 qt = 2 pt, 1 pt = 2 cawan; 1 ton = 2000 lb. Masa: 1 h = 60 min, 1 min = 60 s, 1 hari = 24 h, 1 minggu = 7 hari. Unit yang lebih kecil memberikan nombor yang lebih besar.
Jawapan: G = 74.6 %
Purata berwajaran: apabila bahagian dikira dengan peratusan yang berbeza, darabkan setiap skor dengan pemberatnya (sebagai perpuluhan) dan tambahkan. Min biasa bagi skor hanya betul apabila setiap bahagian dikira sama rata.
Jawapan: C · Epitelium peralihan (urotelium)
Epitelium peralihan boleh mengubah bentuk daripada sel bulat kepada sel pipih apabila pundi kencing meregang, sambil kekal kedap air.
Jawapan: A · Korda sperma
Kanal inguinal membawa korda sperma pada lelaki dan ligamen bulat pada perempuan. Salur femoral sebaliknya melalui bawah ligamen inguinal.
Jawapan: C · Penyerapan semula natrium dan rembesan kalium dalam nefron distal
Aldosteron bertindak pada tubul distal dan duktus pengumpul untuk meningkatkan penyerapan semula Na⁺ dan rembesan K⁺. Air mengikut natrium, menaikkan isi padu darah.
Jawapan: B · Refleks baroreseptor menaikkan kadar jantung dan vasokonstriksi
Darah bertakung di kaki dan tekanan jatuh; baroreseptor menjana kurang, yang meningkatkan aktiviti simpatetik dan mengurangkan aktiviti vagus dalam beberapa saat, menaikkan kadar jantung dan tonus vaskular.
Jawapan: C · 100 times
The pH scale is logarithmic. A difference of 2 pH units means 10 × 10 = 100 times more hydrogen ions in the more acidic solution.
Jawapan: B · Secondary structure
Primary structure is the amino acid sequence. Secondary structure is local folding into helices and sheets by hydrogen bonds. Tertiary is the whole 3D shape of one chain, and quaternary is several chains together, as in haemoglobin.
Jawapan: B · 2
MgCl₂ has 2 Cl, so 2HCl is needed, which also gives 2 H for H₂: Mg + 2HCl → MgCl₂ + H₂.
Jawapan: B · Br < Cl < F
Electronegativity decreases going down a group because the outer shell is farther from the nucleus. Bromine is lowest of the three, fluorine highest.
Jawapan: D · hardest
When comparing three or more, use the superlative. For the short adverb “hard”, the superlative is “hardest”.
Jawapan: A · The patient felt better; therefore, she went home.
A conjunctive adverb cannot join two independent clauses with only a comma. Use a semicolon before it and a comma after it.
Jawapan: C · Became less intense
To subside is to become less strong or to settle down.
Jawapan: D · Atrophy
Hypertrophy is an increase in size, while atrophy is a decrease in size or wasting of tissue.
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