The biceps brachii is primarily responsible for flexing the forearm at the elbow joint.

Smooth muscle is involuntary and is found in the walls of internal organs, facilitating movements such as peristalsis.

Skeletal muscle is striated and under voluntary control, allowing for conscious movement.

Phosphorus is vital for energy transfer as it is a component of ATP, the energy currency of the cell.

Phosphorus is essential for the formation of nucleic acids (DNA and RNA), which are vital for genetic information and protein synthesis.

Sulfur is essential for the synthesis of amino acids, particularly cysteine and methionine.

The stomach primarily absorbs water and alcohol, while other nutrients are absorbed in the small intestine.

Phosphorus is essential for root development and is involved in energy transfer and storage.

2-butanol has a higher solubility in water due to its ability to form hydrogen bonds more effectively than the others.

Potassium (K) is more reactive with water than Sodium (Na) and Lithium (Li).

Beryllium has the highest melting point among the alkaline earth metals.

Barium is the most reactive alkaline earth metal due to its larger atomic size and lower ionization energy.

Magnesium (Mg) is the least reactive among the alkaline earth metals due to its higher ionization energy compared to the others.

Calcium reacts vigorously with water to form calcium hydroxide and hydrogen gas.

Leucine is an essential amino acid that must be obtained through diet.

Butterflies are insects and belong to the class Insecta, characterized by having three pairs of legs and usually two pairs of wings.

Whales, particularly baleen whales, are filter feeders that consume small organisms by filtering water through their baleen plates.

Jellyfish are examples of cnidarians, which are known for their stinging cells called cnidocytes.

Goldfish are classified as bony fish, belonging to the class Osteichthyes, which have a skeleton made of bone.

Frogs are classified as amphibians, which are known for their dual life in water and on land.

Earthworms belong to the phylum Annelida, which is characterized by segmented bodies.

Phylum Chordata includes animals that possess a notochord at some stage of their development, such as sharks.

A climax community is a stable and mature ecological community that has reached a steady state.

A food chain is a linear sequence of organisms through which energy flows, from producers to consumers.

A food web is a complex network of feeding relationships that illustrates how different organisms are interconnected in an ecosystem.

A population is defined as all individuals of a particular species that live in a specific area.

A trophic level refers to the position an organism occupies in a food chain or food web, indicating its role in energy transfer.

Adaptive radiation refers to the rapid evolution of many species from a common ancestor, often in response to new environmental opportunities.

An ecosystem is defined as a community of living organisms interacting with their physical environment.

Genetic drift refers to random changes in allele frequencies in a population, often having a more significant effect in small populations.