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For growth to occur, anabolism should be greater than catabolism: Anabolism: The building-up process of synthesis. e.g DNA synthesis, protein synthesis Catabolism: The destructive process of breaking down molecules. e.g respiration When anabolism is greater than catabolism, the organism is synthesizing more new material than it is breaking down. This results in growth, which is an irreversible increase in the size, volume, or weight of the body.

This is the Biuret's test which is a chemical test that detects the presence of peptide bonds in a substance, and is used to measure the amount of protein in a sample. - Option A

the cerebellum is a thick and convoluted portion of the hindbrain. Among other functions, it controls the posture or balance of the body.

The peripheral arrangement of vascular tissues in dicots is a characteristic of the internal structure of the stem: In dicot stems, vascular bundles are arranged in a ring near the stem's edge. The vascular bundles are made up of xylem and phloem, which are the plant's main transport systems. The correct answer is option C

III ⇔ is a photosynthesizing water plant such as Elodea.

The set-up experiment is to test for the presence of oxygen in plants. The bubbles produced in the test tube are oxygen gas that's released by the plant during photosynthesis. - Option D

The Scapula is part of the pectoral girdle, which attaches the upper limbs to the body. The scapula is a flat, triangular bone that supports the muscles of the shoulder joint. The Ischium, on the other hand is part of the pelvis, which helps support the upper body's weight and balance. The ischium is also part of the acetabulum, a ball and socket joint formed by the pelvic bone and femur. The scapula is part of the appendicular skeleton, while the ischium is part of the pelvic girdle. In summary, the appendicular skeleton also includes the upper and lower limbs, the bones of the hands and feet, and the pelvic girdle.- Option C

To estimate the volume of air in a soil sample using a measuring cylinder, you can calculate the difference between the total volume of the soil and water mixture and the observed volume of the mixture: Calculate the total volume of the soil and water mixture, (p+q)cm3 Observe the total volume of the water-soil mixture, r cm3 Subtract the observed volume from the total volume to calculate the volume of air. In other words, r < (p + q), because on mixing with water, air present in the soil would have been released and escaped from the soil.

Ecological succession is the development of species after a disaster that destroys an ecosystem. The relationship between species diversity and succession is important for conserving large areas of old-growth habitats. Ecological succession typically increases species diversity. During early succession, new species arrive, increasing diversity. For example, after a wildfire, small plants like mosses and other pioneer species grow on the barren soil, breaking it down into soil that other plants can use. - A

Nitrogen is an essential nutrient for plants, but it's not available in its most common form, atmospheric nitrogen. The nitrogen in the air is inert, so plants and animals can't use it directly. To be used by plants, the N\(_2\) must be transformed through a process called nitrogen fixation. Fixation converts nitrogen in the atmosphere into forms that plants can absorb through their root systems. Nitrogen fixation can occur through biological, lightning, or industrial processes. Putrefaction is the biological process of organic matter breaking down, resulting in a foul smell and taste.It can also refer to the decomposition of organic waste, such as solid wastes from leather industries. In biology, combustion can refer to the process of organic materials generating heat through bacterial composting. Nitrogen fixation is the process of converting atmospheric nitrogen N\(_2\) into a form that plants can use. Also, nitrification converts ammonia into nitrates used by plants.

High birth rate and high immigration rate II. Low birth rate and high immigration rate III. Low mortality rate and low emigration IV. High mortality rate and high emigration rate. High birth rate rate, high rate at which people move into the country, low mortality( reduction in death rate) and low emigration (rate at which people migrate out from the country) all increase the population rapidly. Therefore, I & III are correct, hence option B is the correct answer.

IV. is the death phase of the organisms, which could be as a result of the high toxicity of the soil to the plants. The correct answer is option A

Fats produce the most energy when oxidized: Fats produce more than twice the amount of energy per gram as carbohydrates. One gram of carbohydrate provides 16kJ of energy. One gram of fat provides 37kJ. Therefore, fats in food contribute double the energy than the equivalent amounts provided by sugar.- Option B

The left ventricle of the mammalian heart has the thickest wall.

Serum differs from blood plasma in the following ways: How it's obtained Serum is obtained from blood that has clotted, while plasma is obtained from blood that has been prevented from clotting with an anticoagulant. What it contains Serum lacks clotting factors, such as fibrinogen, that are present in plasma. Both serum and plasma contain similar components like antibodies, hormones, and electrolytes