A Team of Astronomers Takes Spectra of Thousands of Different

question 5

Multiple Choice

A team of astronomers takes spectra of thousands of different stars in different parts of the sky. The spectra show significant differences. The main reason the spectra of the stars do not all look alike is that the stars

• A) are located in many different regions of the Milky Way
• B) have different temperatures
• C) are made of significantly different elements
• D) sometimes have atmospheres and sometimes do not
• E) change their spectra as they age, and so young stars have very different spectra from older ones

Identify and explain the significance of solubility in the context of poisons, with particular reference to arsenic.

Understand the basic principles of acid-base equilibria and the effects of adding salts to acid/base equilibria.

Comprehend the concepts of aerobic and anaerobic respiration, and the production and impact of lactate in the body.

Recognize the physiological responses to exercise, including muscle cramps and the role of electrolytes and substances like epicatechin.

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Definitions:

Female Sex Chromosome

The X chromosome, one of the two types of sex chromosomes, two of which are present in females (XX).

Androgen Insensitivity Syndrome

Androgen Insensitivity Syndrome is a genetic condition where a person is genetically male but has some or all physical traits of a female, due to the body's inability to respond to androgens.

Genetically Male

Refers to individuals who have XY chromosomes typical of the male sex in humans.

Ambiguous Genitals

A condition present at birth where the external sexual organs are not clearly male or female.