IGCSE CIE Biology - Hormones (Animal, Human)

Hormones are eventually removed from the blood and destroyed by which organ?

• Kidneys

• Liver

• Brain

• White blood cells

What is the average length of the menstrual cycle?

• 14 days

• 21 days

• 28 days

• 35 days

How does birth control pills affect the menstrual cycle?

• It stops ovulation

• It thickens the uterine lining

• It reduces the level of estrogen and progesterone

• It increases the level of follicle-stimulating hormone

The hormone auxin has what effect on plant cells in the shoot tips of plants?

• Makes them grow longer

• Prevents them from growing

• Makes them move to the dark side

• Negative phototropism

Which hormone is responsible for thickening the uterine lining during the menstrual cycle?

• Estrogen

• Progesterone

• Luteinizing hormone

• Follicle-stimulating hormone

How do liver cells respond to increased insulin levels in the blood?

• They absorb glucose and convert it to glycogen

• They absorb glucose and convert it to glucagon

• They break down glucagon and release the glucose into the blood

• They break down glycogen and release the glucose into the blood

• They release glucagon into the blood

Which phase of the menstrual cycle is characterized by the shedding of the uterine lining?

• Follicular phase

• Ovulation phase

• Luteal phase

• Menstrual phase

Which hormone triggers the release of an egg from the ovary during the menstrual cycle?

• Estrogen

• Progesterone

• Leutenizing Hormone

• Follicle stimulating hormone

In which phase of the menstrual cycle does the follicle mature and prepare for ovulation?

• Follicular phase

• Ovulation phase

• Luteal phase

• Menstrual phase

A hormone is a chemical substance produced by ...

• A gland

• The liver

• A target organ

• The blood