Question

All of the following are non-specificimmune defenses except...

	a.	binding of T lymphocytes to cells parasitized by viruses
	b.	macrophages engulfing damaged or foreign cells
	c.	inflammation
	d.	fever

Which of the following statements about sexualreproduction are true?

	a.	it is faster than asexual reproduction
	b.	it is less common among animals than among bacteria
	c.	it results in more genetic diversity among offspring than asexual reproduction
	d.	it is generally less complicated than asexual reproduction

Ovulation happens on day ____ of the female menstrual cycle in response to the secretion of _____.

	a.	1 / estrogen
	b.	14 / estrogen
	c.	14 / lutenizing hormone (LH)
	d.	14 / progesterone

Answer 1

1. A

T cells make up the specific immune response system and once T cells are involved, they will produce the memory cells which helps in preventing the similar infection or boosting the immune response in the future.

Where as macrophages, inflammation and fever are non specific immune responses and occur without the production of immunological memory.

2. C

Sexual reprodction usually involves two organisms and thus there is genetic material exchange in the product and chances of genetic diversity is more in the offspring.

Asexual reproduction is less complicated, faster and occurs commonly in bacteria and lower organisms.

3. C

Ovulation occurs due to surge of LH from the anterior pituitary gland and this occurs due to the decreased oestrogen levels. This causes the ovulation to occur on the 14 day.

Hope this helps... Thank you!!!