HESI A2 Biology Practice Test - Nurselytic

Correct Answer: A

Rationale:
To convert centimeters to millimeters, you need to multiply by 10 since 1 centimeter is equal to 10 millimeters.
Therefore, 8 cm x 10 mm/cm = 80 mm. The pencil measures 8 cm, which is equivalent to 80 mm when converted.
Choice A is correct as it correctly converts 8 cm to mm by multiplying it by 10.

Choices B, C, and D are incorrect because they do not apply the correct conversion factor.

Correct Answer: A

Rationale: Fat is a type of loose connective tissue known as adipose tissue. Adipose tissue primarily functions to store energy and provide cushioning and insulation for organs. While muscle tissue is responsible for movement, nervous tissue transmits nerve impulses, and epithelial tissue covers and protects body surfaces, fat specifically falls under the category of connective tissue.

Correct Answer: D

Rationale: The endocrine system comprises a network of glands that produce and release hormones to regulate bodily functions. The pituitary gland, thyroid gland, and adrenal glands are essential components of this system. The pituitary gland secretes various hormones that control other glands and some body functions. The thyroid gland regulates metabolism, growth, and energy levels by producing thyroid hormones. The adrenal glands produce hormones involved in stress response, metabolism, and immune function.
Therefore, all of the above glands are integral parts of the endocrine system, making choice D the correct answer.

Correct Answer: D

Rationale: Heterozygous traits are denoted by having two different alleles for a particular gene, represented as Aa. This means that they are not haploid (
A), not denoted AA (
B), and not denoted aa (
C).
Therefore, the correct answer is D, as heterozygous traits are represented as Aa.

Correct Answer: D

Rationale: Option D is the best example of a hypothesis because it presents a clear cause-and-effect relationship that can be tested through experimentation. It follows the format of 'If [cause], then [effect]' which is characteristic of a hypothesis in scientific research. The statement is specific, testable, and does not rely on personal opinions or biases, making it a strong and valid hypothesis.

Choices A, B, and C do not follow the structure of a hypothesis as they lack the cause-and-effect relationship that can be tested through experimentation. They are more like statements or opinions rather than hypotheses.