Quiz 5 questions

Question 1

Ammonia:
Is soluble in water
Has low toxicity relative to urea
Is metabolically more expensive to synthesize than urea
Is the major nitrogenous waste excreted by insects
Is the major nitrogenous waste product excreted by humans and birds

Answer 1

Is soluble in water

Question 2

The steroid hormone that stimulates molting in arthropods is:
Ecdysteroid
Glucagon
Thyroxine
Juvenile hormone
Growth hormone

Answer 2

Ecdysteroid

Question 3

People who suffer from inadequate iodine in the diet are unable to produce sufficient levels of a hormone to provide negative feedback on the hypothalamus and anterior pituitary. What is that hormone?
Insulin
Thyroid hormone
Thyroid releasing hormone
ACTH

Answer 3

Thyroid hormone

Question 4

Releasing and inhibiting hormones secreted by nerve cells of the ______ regulate hormones released by the _______.
Hypothalamus; anterior pituitary
Hypothalamus; posterior pituitary
Anterior pituitary; hypothalamus
Thyroid; adrenal gland
Posterior pituitary; anterior pituitary

Answer 4

Hypothalamus; anterior pituitary

Question 5

Which of the following structures in females is analogous in function to the vas deferens in males?
Urethra
Uterus
Oviduct
Vagina
None of the above

Answer 5

Oviduct

Question 6

A hypothalamic reproductive hormone that stimulates hormone secretion by the anterior pituitary gland is:
LH
FSH
Insulin
GnRH
Estradiol

Answer 6

GnRH

Question 7

The primary function of the corpus luteum is to:
Nourish and protect the egg cell
Maintain progesterone and estrogen synthesis after ovulation has occurred
Stimulate the development of the mammary glands
Raise estrogen levels prior to ovulation
Initiate ovulation

Answer 7

Maintain progesterone and estrogen synthesis after ovulation has occurred

Question 8

The level of what hormone coordinates the follicular phase of the ovarian cycle with the proliferative phase of the uterine cycle?
LJ
Progesterone
FSH
Prolactin
Estradiol

Answer 8

Estradiol

Question 9

A physician finds that a nine year old male patient is entering puberty much earlier than usual. Such a condition is most likely the result of a tumor in the:
Hypothalamus, producing elevated levels of testosterone
Anterior pituitary, producing elevated levels of testosterone
Testes, producing elevated levels of estrogen
Anterior pituitary, producing elevated levels of gonadotropins
Adrenal gland, producing elevated levels of corticosteroids

Answer 9

Anterior pituitary, producing elevated levels of gonadotropins

Question 10

The body fluids of an Osmoconformer would be ___ with its ___ environment.
Isosmotic; freshwater
Hyperosmotic; saltwater
Isosmotic; saltwater
Hypoosmotic; saltwater
Hypoosmotic; freshwater

Answer 10

Isosmotic; saltwater

Question 11

Urea is the primary nitrogenous waste product of:
Humans
Most birds
most aquatic invertebrates

Question 12

At the time of fertilization, the maturation of the human oogonium has resulted in_____.
Two primary oocytes
Four secondary oocytes
Four zygotes
One secondary oocyte

Answer 12

One secondary oocyte