Lembar rumus, langkah-langkah metode utama untuk setiap topik, dan 16 soal latihan, dengan pembahasan lengkap di bagian belakang.
Paragraph: “Many students struggle to focus at home. Phones buzz, family members talk, and the TV is often on. A quiet library can be a better place to study.” What is the author’s main point?
“When Ella received the award, she thanked her coach, her teammates and her parents, but said nothing about her own hard work.” Which trait does this most likely show?
Sebuah resep memakai 18 cangkir tepung untuk 6 adonan muffin. Dengan perbandingan yang sama, berapa cangkir tepung x yang diperlukan untuk 9 adonan?
Seorang perawat perawatan di rumah menempuh 117 mil dalam 2 jam 36 menit. Berapa kecepatan rata-rata v dalam mil per jam?
Manakah dari organ berikut yang retroperitoneal?
Pada janin, duktus arteriosus menghubungkan trunkus pulmonalis dengan aorta. Menjadi apa struktur ini setelah lahir?
Bagaimana fraksi ejeksi dihitung?
Mengapa ketoasidosis biasanya berkembang pada diabetes tipe 1 yang tidak diobati tetapi jarang pada tipe 2?
What is meant by independent assortment in meiosis?
The wings of a bat and the wings of a butterfly are used for flying but have very different structures. What are they called, and what does this show?
Why does keeping food in a refrigerator slow down spoilage?
Making ammonia (N₂ + 3H₂ ⇌ 2NH₃) is exothermic. A low temperature would give a higher yield, yet factories use a moderately high temperature. Why?
Choose the correct word form: “Regular exercise can ___ your heart.”
Which sentence is the correct use of “it’s”?
Choose the meaning of the word in bold: “The patient lives in a rural area far from the hospital.”
What does the term gastrostomy mean?
Jawaban: D · A library may be a better place to study.
The details about phones, family and TV explain why home is distracting, which supports the main point that a library can be better for studying.
Jawaban: C · Modesty
Giving credit to others and not praising herself shows modesty.
Jawaban: x = 27 cangkir
Rasio dan proporsi: rasio a : b membandingkan dua besaran. Dalam proporsi dua rasio sama, a/b = c/d, dan Anda menyelesaikannya dengan perkalian silang: a·d = b·c. Untuk membagi suatu jumlah dengan rasio m : n, bagi menjadi m + n bagian yang sama; satu bagian terdiri dari m bagian, bagian lainnya n bagian.
Jawaban: v = 45 mph
Laju dan skala: kecepatan = jarak ÷ waktu, dengan waktu dalam satuan jawaban (2 jam 15 menit = 2,25 jam, karena 15 menit = 15/60 jam). Skala peta adalah proporsi: 1 cm pada peta mewakili jarak tetap di lapangan, jadi kalikan jarak pada peta dengan skala itu.
Jawaban: C · Ginjal
Ginjal terletak di belakang peritoneum parietal. Lambung, limpa, dan kolon transversum bersifat intraperitoneal dan memiliki mesenterium atau ligamen.
Jawaban: B · Ligamentum arteriosum
Duktus arteriosus menutup setelah lahir dan menjadi ligamentum arteriosum. Foramen ovale menjadi fossa ovalis dan duktus venosus menjadi ligamentum venosum.
Jawaban: A · Isi sekuncup ÷ volume akhir diastolik
Fraksi ejeksi adalah proporsi darah di ventrikel penuh yang dipompa keluar per denyut. Nilai normalnya sekitar 55–70%.
Jawaban: C · Bahkan kadar insulin yang rendah pun menekan lipolisis dan ketogenesis
Insulin sangat menghambat lipolisis dan produksi keton di hati. Pada tipe 1 hampir tidak ada insulin, sehingga asam lemak membanjiri hati dan keton menumpuk.
Jawaban: C · Homologous pairs line up randomly, so gametes get different mixes of chromosomes
In metaphase I, each homologous pair lines up with its maternal or paternal chromosome facing either pole by chance. So each gamete receives a random mix of maternal and paternal chromosomes.
Jawaban: A · Analogous structures, which evolved separately for the same job
Analogous structures have similar functions but evolved independently in unrelated groups, a process called convergent evolution. Homologous structures share an origin, even if their functions differ.
Jawaban: B · Lower temperatures slow down chemical and microbial reactions
At lower temperatures, fewer particles have enough energy to react, and microbial enzymes work slowly. Spoilage reactions therefore happen more slowly. The activation energy itself does not change.
Jawaban: B · At low temperatures the reaction is too slow to be useful
Lowering the temperature favours ammonia at equilibrium, but makes the reaction very slow. A compromise temperature with an iron catalyst gives an acceptable yield quickly. High pressure is also used to favour ammonia.
Jawaban: B · strengthen
A modal verb such as “can” is followed by a base verb. “Strengthen” is the verb form; “strength” is a noun and “strong” an adjective.
Jawaban: A · It’s important to wash your hands.
“It’s” means “it is” or “it has”. In the other sentences the possessive “its” is needed.
Jawaban: A · Countryside
Rural means relating to the countryside rather than towns or cities.
Jawaban: B · A surgical opening into the stomach
A gastrostomy is an opening into the stomach through the abdominal wall, often used for a feeding tube.
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