Explanation

In polio, approximately 1 out of every 200 infections leads to irreversible paralysis, often in the legs.

Though most infections are mild or asymptomatic, this small percentage represents the severe impact of the disease.

Explanation

Ancient Greek medicine believed that health depended on the balance of four bodily fluids or "humors": blood, phlegm, black bile, and yellow bile.

Imbalance in these humors was thought to cause disease.

Explanation

Carrying capacity refers to the maximum number of organisms (like cattle) that an environment (like grassland) can sustain without degradation.

It depends on available resources such as food, water, and space.

Explanation

A capsid is a protein coat surrounding a virus's genetic material, and it's composed of individual protein subunits called capsomeres

Explanation

1. The herpes virus capsid contains 162 capsomeres

. These capsomeres are arranged in an icosahedral shape, with 12 pentons (at the vertices) and 150 hexons (on the faces). 

Explanation

The central requirement in the maintenance of an organism is homeostasis, which is the ability to maintain a stable internal environment despite external changes.

This involves regulating various internal conditions such as body temperature, blood pH, and fluid balance to ensure optimal functioning. 

Explanation

The process of detecting a change and signaling the effector's response in a control system is called a feedback mechanism.

This mechanism involves a receptor detecting a change, a control center (integrator) processing the information, and an effector carrying out the necessary response to maintain or restore a desired state. 

Explanation

 A dilute solution compared to cell concentration is termed hypotonic

This means the solution has a lower concentration of solutes (and a higher concentration of water) than the cell's internal environment. 

Explanation

Interstitial cells, specifically Leydig cells in the testes, secrete androgens, primarily testosterone, in response to stimulation by luteinizing hormone (LH).

These hormones are crucial for the development of male secondary sexual characteristics and overall reproductive function. 

Explanation

 Plants that do not have adaptations to remove excess water from their cells in freshwater environments are xerophytes.

These plants are adapted to survive in dry, arid conditions and have evolved to conserve water, not to deal with excess water influx.