أسئلة المراجعة

حوّل كلا الطولين باستخدام مقياسيهما الخاصين

• 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.

لإزالة المحلول السطحي بشكل متسق

• 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.

استخدام محاليل منقذة ذات درجات حموضة مختلفة عند درجة حرارة واحدة

• 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.

هي تحلل الدهون emulsifies lipids

• 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.

قد يكون هناك عامل آخر يحد الآن من المعدل

• 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 سم³/دقيقة

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

لتقليل تغيرات حجم الغاز غير المرتبطة بالتنفس

• Anaerobic respiration releases less energy per glucose than aerobic respiration. In human muscles it produces lactic acid; in yeast it produces ethanol and carbon dioxide. Breathing supplies oxygen but is not itself respiration.

0.1 سم³/دقيقة/جرام

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

زيادة تأثير الأنسولين

• 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.

لكل عملية إخصاب احتمالية ربع (aa) تحت هذا النموذج

• 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.

استخدم خط مسار مع مسافات عينة ثابتة

• 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.

المتغيرات المقاومة تنجو وتتكاثر بنجاح أكبر

• 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.