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Which of the following represents the first line of defense to an intruding pathogen?

Adaptive immunity

Antibodies

Innate immunity

T cells

Answer and Explanation

The Correct Answer is C

Innate immunity represents the first line of defense to an intruding pathogen.

The innate immune system is a series of nonspecific defenses that make up the innate immune system.

These defenses are not directed against any one pathogen but instead provide a guard against all infection.

Choice A is incorrect because adaptive immunity is activated when pathogens are able to bypass innate immune defenses.

Choice B is incorrect because antibodies are part of the adaptive immune system and are produced by B cells.

Choice D is incorrect because T cells are part of the adaptive immune system and assist B cells or directly kill infected cells.

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Correct Answer is C

Explanation

Estrogen is a steroid hormone responsible for the development of female secondary sexual characteristics such as breast development, menstrual cycle, and widening of hips.

Choice A, Progesterone, is not the correct answer because it is required to maintain pregnancy and delivery.

Choice B, Testosterone, is not the correct answer because it is a hormone produced by the testes which control the development of male secondary sexual characteristics.

Choice D, FSH (Follicle Stimulating Hormone), is not the correct answer because it stimulates the growth of ovarian follicles in females and regulates spermatogenesis in males.

A. Oogenesis. B. Fertilization. C. Meiosis. D. Mitosis.

Correct Answer is B

Explanation

Fertilization is the process by which male and female gametes fuse to form a zygote.

Oogenesis (choice A) is the process by which female gametes, or eggs, are produced.

Meiosis (choice C) is a type of cell division that results in the formation of gametes.

Mitosis (choice D) is a type of cell division that results in the formation of two identical daughter cells.

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Which of the following represents the first line of defense to an intruding pathogen?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which hormone is responsible for the development of female secondary sexual characteristics such as breast development, menstrual cycle, and widening of hips?

Correct Answer is C

Explanation

Which process involves the fusion of male and female gametes resulting in the formation of a zygote?

Correct Answer is B

Explanation

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