« previous next »

Author Question: A sperm fertilizes an ovum by penetrating the ____ a. amniotic membrane b. zona pellucida c. ... (Read 61 times)

melly21297

  • Hero Member
  • *****
  • Posts: 565
on: Aug 6, 2018
A sperm fertilizes an ovum by penetrating the ____
 a. amniotic membrane
  b. zona pellucida
 c. chorionic membrane
  d. fallopian membrane
  e. corpus luteum

Question 2

A(n) ___________________ _ is a substance or an agent in the environment that is injurious to human, animal, or plant life.
 Fill in the blank(s) with correct word


jaaaaaaa

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Aug 6, 2018
Answer to Question 1

b

Answer to Question 2

pollutant


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

melly21297

  • Hero Member
  • *****
  • Posts: 565
Reply #2 on: Aug 6, 2018
Thank you!


jaaaaaaa

  • Sr. Member
  • ****
  • Posts: 341
Reply #3 on: Aug 6, 2018
Always glad to help...


« previous next »
 

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Types of movement across a biological membrane. Types of movement across a biological membrane.
Tertiary structure of sperm whale myoglobin Tertiary structure of sperm whale myoglobin
Measuring Temperature Using a Tympanic Membrane (Aural) Thermometer Measuring Temperature Using a Tympanic Membrane (Aural) Thermometer
The cell membrane is a lipid bilayer with signal proteins and channel proteins embedded in it. The cell membrane is a lipid bilayer with signal proteins and channel proteins embedded in it.
Experimental demonstration of membrane fluidity Experimental demonstration of membrane fluidity
Surfaces of Epithelial Cells and the Basement Membrane Surfaces of Epithelial Cells and the Basement Membrane
Video: Griffith's experiments

For a complete list of videos, visit our video library