OAT Booster Biology Practice exam Test 1
relative concentration of two solutions that are separated by a semipermeable
membrane - tonicity
Water will always flow in what two ways? - 1. low to high solute concentration
2. high to low water concentration
What happens to cells that are placed in hypertonic solutions? - shrivel due to
water leaving cell
What happens to cells that are placed in hypotonic solutions? - swell due to water
entering cell
if too much water enters the cell, it will burst
Describe the tonicity of red blood cells being placed in distilled water. - The
distilled water is hypotonic relative to RBC
Plant cells prefer what type of environments? WHY? - hypotonic solutions
-because plant cells are capable of storing water in vacuoles
, OAT Booster Biology Practice exam Test 1
The menstrual cycle can be broken down into what 2 distinct phases? What
separates these two events? - follicular phase and luteal phase
ovulation
The follicular phase begins with the release of what hormone from what part of
the brain? - GnRH from the hypothalamus
The GnRH, a tropic hormone, releases what other two hormones from what part
of the brain? - releases: 1) FSH and 2) LH
from anterior pituitary
What is the man function of the follicle-stimulating hormone (FSH)? - to stimulate
the development of ovarian follicles
What is the main function of the luteinizing hormone (LH)? - to cause ovulation
During the follicular phase, levels of what rises?
The rise of this hormone leads to the spike of what else? - estrogen
-increasing estrogen levels leads to the spike of LH to ultimately lead to ovulation
relative concentration of two solutions that are separated by a semipermeable
membrane - tonicity
Water will always flow in what two ways? - 1. low to high solute concentration
2. high to low water concentration
What happens to cells that are placed in hypertonic solutions? - shrivel due to
water leaving cell
What happens to cells that are placed in hypotonic solutions? - swell due to water
entering cell
if too much water enters the cell, it will burst
Describe the tonicity of red blood cells being placed in distilled water. - The
distilled water is hypotonic relative to RBC
Plant cells prefer what type of environments? WHY? - hypotonic solutions
-because plant cells are capable of storing water in vacuoles
, OAT Booster Biology Practice exam Test 1
The menstrual cycle can be broken down into what 2 distinct phases? What
separates these two events? - follicular phase and luteal phase
ovulation
The follicular phase begins with the release of what hormone from what part of
the brain? - GnRH from the hypothalamus
The GnRH, a tropic hormone, releases what other two hormones from what part
of the brain? - releases: 1) FSH and 2) LH
from anterior pituitary
What is the man function of the follicle-stimulating hormone (FSH)? - to stimulate
the development of ovarian follicles
What is the main function of the luteinizing hormone (LH)? - to cause ovulation
During the follicular phase, levels of what rises?
The rise of this hormone leads to the spike of what else? - estrogen
-increasing estrogen levels leads to the spike of LH to ultimately lead to ovulation
