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]
4 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]4 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
Why do you think scientists track the genes of other organisms such as rats or mice in the database? Do you think rat genes are
DENIUS [597]

Explanation:

Understanding through into genetic risk factors for various illnesses in the human population come from mouse research. Manipulation of the mouse genome is quite simple, for example, adding or deleting genes to better understand their function in the body.

The majority of mice and rats used throughout medical studies are inbred, which means they are genetically virtually similar, making the outcomes of medical trials more consistent.

6 0
3 years ago
How will you describe the sequence of oxygen carbon dioxide and blood flow in you our words?
lakkis [162]
The flow of oxygen is simply summarized as entering the body through the lungs and being absorbed into the blood. From there, the oxygenated blood is carried to the heart and then pumped all over the body. From there, the oxygen is absorbed by cells that need it for respiration. 
Carbon dioxide is generated via respiration of glucose in muscle and body cells. It then passes into the blood and is carried out to the lungs, where it diffuses out and is breathed out.
Blood follows a double circulation pattern, where deoxygenated is pumped to the lungs from the heart then goes back to the heart to be pumped into the rest of the body.
7 0
3 years ago
Individuals producing an abnormal form of the extracellular matrix protein, fibrillin, is a result of ______.
erastova [34]

Answer:

Indivisuals with producing an abnormal form of extracellular protein fibrillin are suffering from Marfan syndrome ehich is caused by genetic mutation in the FBN1 gene.

Explanation:

Gene mutations in FBN1 gene results in the production of an abnormal extracellular matrix fibrillin-1 protein that cannot function properly. These gene mutations basically reduce the amount of fibrillin-1 produced by the cell, alter the structure of fibrillin-1, or causes the impairment of the transport of fibrillin-1 out of the cell.

As a result, protein is poorly incorporated into extracellular matrix. Hence, indivisuals with Marfan syndrome present following symptoms

Tall stature.

Disproportionately long arms, legs and fingers.

Sternum either protrudes outward or dips inward.

Arched palate and crowded teeth.

Heart murmurs.

Extreme nearsightedness.

6 0
3 years ago
In a cell undergoing mitosis, chromatin fibers lengthen, the mitotic spindle is broken down, and nuclei start to
Leto [7]
Answer:
Cytokinesis
Explanation:
It is the first stage


8 0
2 years ago
Greg is breeding leopard geckos and wants to produce a new color morph. He crosses a homozygous red morph with a homozygous whit
Anestetic [448]

Answer:

Codominance

Explanation:

Codominance occurs when two heterozygous allele for a trait is expressed equally in the an organism's phenotype with neither allele being dominant or recessive. In codominance, none of the allele hides the expression of the other allele. So when two alleles are crossed, the offspring carries a combination of the parents phenotype without anyone masking the other.

From the question,  the type of genetic pattern of the leopard geckos display is codominance.

6 0
3 years ago
Other questions:
  • Secreted proteins are synthesized in the cell then transported to the extracellular environment. Place the following cellular re
    7·1 answer
  • Based on the fossil, which organism evolved last? Fern Fish Oak Shell
    15·1 answer
  • From the pic put the beakers in order (has the least heat energy to the most)
    15·2 answers
  • What are the characteristics of carbon bonds?
    5·1 answer
  • Why is it difficult to study the genetics of humans?
    5·1 answer
  • How do feedback mechanisms help us predict future natural phenomenas
    10·1 answer
  • Why would your body have trouble maintaining homeostasis if you are sick with a very high fever?
    6·1 answer
  • based on the data for the groups of cells cultured with 0.1 serum (groups 3 to 7), identify which of the four proteins tested do
    7·1 answer
  • .List some resources that you think both plants and animals need for their growth and survival.​
    5·1 answer
  • Question 4
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!