1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ArbitrLikvidat [17]
3 years ago
7

For fertilization to occur in humans, only one sperm is needed to weaken the barrier that surrounds the egg.

Biology
1 answer:
photoshop1234 [79]3 years ago
8 0

Answer:

False

Explanation:

Approximately 200 out of 200 million sperms ejaculated during intercourse reach the general vicinity of the egg.  They sperms must undergo capacitation during which dilute inhibitory factors fluids of the female reproductive tract weaken the membrane of the sperm head so that head of the sperm can be broken easily when it came in contact with the egg.

The first sperm to reach an egg isn’t the one to fertilize it because the egg is surrounded by a gelatinous membrane called the zona pellucida. Outside this layer, a layer of small granulosa cells also present.

Therefore, it requires numerous sperm to clear a path through these barriers before one of them can penetrate the egg and fertilize it.

You might be interested in
Human caused reductions of biodiversity, include pollution, invasive species, and overexploitation.
Andrew [12]

Answer:

True

Explanation:

Development, together with globalization, drove severe changes at a global level. The natural and original environments suffered from these effects and still are.

Human beings have constantly been altering the natural ecosystems and causing irreparable damages to nature. For many decades, development involved society and technology advance over new areas unpopulated by humans.

<u>Some</u> of the principal human activities responsible for biodiversity loss are

  • the uncontrolled use of unrenewable resources,
  • overexploitation of renewable resources;
  • land destruction for the mining industry, farming and cattle industry, buildings, and other infrastructures;
  • the unplanned advance of cities, and opening of new roads to connect those cities.  

All of them involving

  • deforestation and fragmentation of natural landscapes;
  • water, air, and soil pollution,
  • species loss, and reduction of biodiversity.

With globalization, transport around the world became normal. And when traveling around the world, new species are intentionally or unintentionally transported too. When these species, of animal or vegetable origin, get established in a new area, they overgrow to the point of turning invasive.

Invasive species are uncontrollable and cause severe damage in native endemic species by competing for resources. The whole ecosystem structure changes.

But there are some background glitches in the system that are the principal responsible for all the mentioned activities. Some important aspects are lacking

  • The respect for nature,
  • People´s education at different levels to care and protect wildlife,
  • Interest in keeping ancestral knowledge,
  • Planning and previous environmental impact studies,
  • Policies to control human activities,
  • Caring involved government.

If, as a society, we lack these aspects, the possibilities of changing our impact on nature are far away.  

6 0
3 years ago
How many of Earth's spheres does
Tpy6a [65]

The carbon cycle moves through virtually all of the earth's spheres.

<h3>Carbon cycle</h3>

There are 4 majors spheres of the earth:

  1. Atmosphere
  2. Geosphere or Lithosphere
  3. Biosphere
  4. Hydrosphere

The carbon cycle moves through the air (atmosphere), oceans (hydrosphere), organisms (biosphere), and the soil (geosphere).

Thus, the carbon cycle moves through all the spheres of the earth.

More on the carbon cycle can be found here: brainly.com/question/1627609

#SPJ1

6 0
2 years ago
The temperature of a city is 32°F, or 0°C. What form will the precipitation most likely take when it reaches the ground
Ipatiy [6.2K]
Either freezing rain or snow. 
6 0
3 years ago
Three days ago yesterday was the day before tuesday. what day will it be tomorrow
Katyanochek1 [597]
I think It Would Be Monday Be It's The Day Before Tuesday
3 0
3 years ago
Read 2 more answers
Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as th
aniked [119]

Answer:

Explanation:way

Hey I did a good night morning is the time for the

3 0
3 years ago
Other questions:
  • A home gets its water from a private well. Which of the following would be the best way for the homeowner to obtain a water-qual
    6·2 answers
  • A science student makes the following statement before investigating what coral will eat.
    10·1 answer
  • List all four body systems that make up the excretory system and give an example of how each body system eliminates waste.
    5·1 answer
  • Which statement best defines morphology
    15·2 answers
  • Which is the correct order of events of sound transmission through the ear? 1. sound waves strike the eardrum 2. the ear ossicle
    7·1 answer
  • Which of the following method of reproduction is common to paramecium and amoeba? (A) conjugation (B) sexual reproduction (C) bi
    6·2 answers
  • The body system is responsible for creating new life.
    10·1 answer
  • What fossils would be bad index fossils
    8·1 answer
  • Explaining hardy Weinberg equilibrium and the eastern squirrel/ how many in the population have the following genotypes
    6·1 answer
  • The table below shows the use of some energy production methods over time.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!