คำถามทบทวนความรู้

แรงดึงดูดระหว่างโมเลกุลรวมถึงพันธะไฮโดรเจน

• The same intermolecular interactions help explain surface tension and the energy needed to change temperature. Heating changes molecular motion and interactions; it does not normally break the covalent O–H bonds.

4180 J

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

การแทนที่ที่สร้างโคดอนที่เหมือนกัน (synonymous codon)

• A codon comprises three bases. The genetic code is degenerate: more than one codon can specify the same amino acid. A substitution can therefore be silent, while insertions or deletions can shift the reading frame.

20 กรดอะมิโน

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

แปลงความยาวทั้งสองโดยใช้สเกลบาร์ของแต่ละแบบ

• A scale bar provides a known real distance in the same image. Convert the image length and real length to the same unit before dividing. Magnification is a ratio and has no unit.

300

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ความสัมพันธ์ทางวิวัฒนาการ

• Read relationships from the branching order. Rotating branches at a node does not change ancestry. A branch length represents time or change only when the diagram gives a scale.

16 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

เป็นการปรับตัวของบุคคลในช่วงชีวิต

• Explain both a benefit and a cost. Reducing stomatal opening conserves water but can limit carbon dioxide entry. A feature cannot be judged as universally best without its ecological context.

20 g/(m² h)

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ระดับความสม่ำเสมอของสปีชีส์ (evenness)

• Compare surveys with similar area, effort, season and identification rules. A diversity index is meaningful only with its formula and conventions specified. Habitat fragmentation can affect movement and gene flow even when total area changes little.

4 สปีชีส์

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

กลีเซอรอลที่มีกรดไขมันสามตัวเชื่อมต่อกันด้วยพันธะเอสเตอร์

• Condensation forms a linkage with a small molecule such as water released in the simplified model; hydrolysis uses water to break such a linkage. Polymer sequence, branching, polarity and three-dimensional shape matter. Saturated fatty acids have no carbon-carbon double bond, while unsaturated fatty acids have at least one; this difference can influence packing under stated conditions.

34 พันธะ

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

เพื่อกำจัดสารละลายบนผิวให้สม่ำเสมอ

• Use percentage change to compare samples with different initial masses. A zero percentage change estimates a solution concentration with no net water movement. This is an estimate from a trend, not proof that water molecules stop moving.

-10 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

พวกมันแสดงออกชุดยีนที่แตกต่างกัน

• Link a named feature to a mechanism and then to the function. Increased area can support exchange, but membrane proteins, gradients and metabolic demand also matter. Stem cells retain different degrees of developmental potential.

0.5 ต่อหน่วย

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

การหายใจและการไหลเวียนเลือด

• Distinguish movement of the whole medium from diffusion across the membrane. Ventilation and perfusion work together, while haemoglobin helps transport oxygen in blood. A change in breathing rate alone does not measure oxygen uptake.

6 ลิตร/นาที

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ทำให้ไขมันแตกตัวเป็นเม็ดเล็กๆ (Emulsification)

• Absorption moves soluble products into blood or lymph. Thin exchange surfaces and a large surface area shorten diffusion paths and increase transfer. Enzyme activity and transport are different processes.

25 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

บันทึกการใช้ทรัพยากรและสภาพแวดล้อมพร้อมพิจารณาปฏิสัมพันธ์

• Separate a habitat observation from a causal claim about a niche boundary. Absence from a site can reflect dispersal, detection, abiotic conditions or interactions. Resource partitioning can reduce overlap, but an observational difference alone does not prove that competition caused it. Compare alternative explanations and the timescale of evidence.

30 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ใช้บัฟเฟอร์ที่มี pH ต่างกันที่อุณหภูมิเดียว

• Measure rate using product formed per unit time or a fixed endpoint. For an endpoint test, 1/time is a rate proxy if the same amount of product or substrate change defines the endpoint each time.

0.02 1/s

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

เพื่อลดการเปลี่ยนแปลงปริมาตรของก๊าซที่ไม่เกี่ยวข้องกับการหายใจ

• Anaerobic processes allow ATP production when oxygen supply cannot support the required aerobic rate, but give less ATP per glucose. In humans lactate can accumulate; yeast can produce ethanol and carbon dioxide.

0.1 cm³/นาที/กรัม

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ปัจจัยอื่นอาจเริ่มจำกัดอัตราการสังเคราะห์

• Change only one factor when testing a limiting factor. At low light, extra light may increase rate. At a plateau, the changed factor is no longer the main limit in that range; the graph alone does not identify which other factor is limiting.

3 ซม³/นาที

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ผ่านความถี่ของอิเล็กตรอนหรือการรวมกลุ่ม

• The all-or-none principle applies to an individual action potential. Stimulus information can be encoded by frequency and recruitment. Myelination permits saltatory conduction between nodes rather than making ions move freely through myelin.

60 Hz

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

การทำงานของอินซูลินเพิ่มขึ้น

• When blood glucose is high, insulin helps increase glucose uptake and storage as glycogen. When it is low, glucagon supports release of glucose from stores. These responses are coordinated, not identical effects of two hormones.

25 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

สัตว์ดื้อยาอยู่รอดและสืบพันธุ์ได้สำเร็จมากกว่า

• After vaccination, memory cells can support a faster secondary response. Antibiotic resistance arises through heritable variation and selection; an individual bacterium does not choose to become resistant because it needs to survive.

20

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ใช้ transect ด้วยระยะห่างในการสุ่มตัวอย่างที่กำหนดไว้

• Estimate total abundance by multiplying mean density by area, with consistent units. This assumes sampled areas represent the habitat. Patchiness and too few samples widen uncertainty.

12

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ค่าการผลิตสองค่าที่มีหน่วยพื้นที่ เวลา และพลังงานร่วมกัน

• Use the same energy units and period in numerator and denominator. Distinguish ingestion, assimilation and production: consumed energy is not all assimilated, and assimilated energy is not all stored as new biomass. An energy pyramid records a flow per area per time; a standing biomass snapshot is a different quantity.

10 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

เส้นด้ายผู้ปกครองหนึ่งเส้น

• Complementary bases support copying of the template sequence. Distinguish DNA copying from transcription into RNA and from separation of chromosomes in cell division. The labelled-strand prediction assumes complete replication rounds and no exchange or degradation of the original material. Detailed fork direction and fragment mechanisms remain in the separate HL preparation case pending guide review.

25 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

มันเพิ่มขึ้นเป็นสองเท่า

• Count chromosomes by centromeres under the stated convention. DNA amount and chromosome number are different quantities. Crossing over and independent assortment contribute to meiotic variation.

15 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

ไม่มีการถ่ายโอนมวลสุทธิในช่วงที่วัด

• A zero mass change suggests no net transfer over the measured interval under the experimental conditions. It does not imply that every individual cell has the same potential or that molecular exchange stops. Compare percentage change when initial sample masses differ.

5 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

การผสมพันธุ์

• Distinguish homologous chromosomes from sister chromatids, and chromosome number from DNA quantity. Replication before meiosis copies DNA without doubling the number of chromosome sets. Crossing over and independent assortment contribute to genetic variation, while random fertilization further changes combinations. These processes do not make every offspring genetically distinct under every conceivable condition.

10 โครโมโซม

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

การปฏิสนธิแต่ละครั้งมีความน่าจะเป็นหนึ่งในสี่ที่จะได้ aa ภายใต้โมเดลนี้

• In a simple monohybrid cross Aa × Aa, gametes carry A or a. Combining independent gametes gives AA, Aa, Aa and aa. The predicted probabilities describe many possible fertilizations, not a fixed order of children.

50 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

การยกอุปกรณ์ไฟฟ้าที่เปราะบางให้สูงกว่าระดับน้ำท่วมที่คาดไว้

• Distinguish mitigation, which addresses drivers, from adaptation, which reduces harm from impacts. A policy assessment needs evidence about effectiveness, cost, equity and uncertainty; one criterion is not the entire decision.

30 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.

เครื่องชั่งอ่านค่า 0.20 g เมื่อว่างเปล่า

• For a product or quotient, adding fractional uncertainties is a common maximum-uncertainty approximation. For a difference, add absolute uncertainties. A nonzero intercept can reveal an offset or an incomplete model.

2.5 %

• Appropriate relation; consistent substitution; correct result; meaningful unit and interpretation.