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
boyakko [2]
3 years ago
10

What is considered to be the first evidence of differentiation in the cells of an embryo?

Biology
1 answer:
avanturin [10]3 years ago
7 0
Determination of specific cells for certain functions changes resulting from induction the occurrence of mRNAs for the production of tissue-specific proteins changes in the size and shape of the cell cell.
You might be interested in
Why do different proteins have their amino acids in different orders
Yakvenalex [24]

Answer:

It is understood that not all them have the same function because the shape dictates function.

Explanation:y

All the amino acids of the proteins are categorized under three groups, because side groups of each amino acids differ from others.

It should be noted that the sequence of amino acids in a protein is based on the nucleotides sequence in the gene that is encoding it. This now determines the function of the protein.

5 0
3 years ago
Which of the following is not true concerning the layers of the Earth?
MariettaO [177]
(C.) The layers of the Earth are uniform in thickness

This is untrue. The mantle is far large than the crust and there are other large size differences.
7 0
3 years ago
Read 2 more answers
What is a pacu fish's predators/dangers
Zepler [3.9K]

he Piranha is one of the most efficient predators on the face of the earth. Granted it is not a large animal, with most only reaching about 5 1/2 to 10 inches (14 – 26 cm), but it is known world wide for its ferocious nature. They have razor sharp teeth and are opportunistic carnivores.

A frenzied attack by a group of Piranha will set the water churning. They will attack and eat all sorts of aquatic animals, insects, lizards and amphibians. They will also devour rodents, carrion (dead meat), and sickly or weakened land animals that venture into the water.

The teeth of the Piranha are triangular in shape with an exact fit in their jaw, comparable to a bear-trap. They are designed to puncture and slice the flesh from their prey. They can strip their prey to the bone in a matter of minutes.

These fish are a great source of fascination. Their natural behaviors have become fodder for the scripts of moviemakers looking for a sensational twist to excite and entice an audience. What could be more intriguing than creating a 'fear factor' from the behaviors of these provocative fish found in the "wild". Yet just like the Great White Shark and the Anaconda constrictor, also popular subjects of thriller movies, the Piranha’s behaviors are over-fantasized.

The Piranha does engage in a feeding frenzy that will "make the water boil" if only because a hungry school of fish are trying to reach the same limited food source. All that activity is bound to create water turbulence. A Piranha school generally only consists of about 20 or so fish, but in a feeding frenzy it can reach up to several hundred..

Piranhas are not always that deadly. Many species live solitary lives once they reach maturity and only four or five species pose any significant danger. Piranhas rarely attack people. Many experts believe they are actually timid fish, and shoal for protection. Even the most aggressive are thought to be not really dangerous until they are trapped and confined, and then attack in self defense. As a pet they are fascinating and beautiful fish, yet you can't hold or pet them. They are not affectionate and owners must be extremely careful, especially when handling them. They do have sharp teeth and an aggressive/defensive nature. Most Piranha bites are sustained when the fish are being handled, though that's not to say a hungry fish is never dangerous.

7 0
3 years ago
If there is 10% adenine in a DNA molecule what percentage of thymine is in the DNA molecule?
vampirchik [111]
<span>Thymine Is 20% in the DNA molecule.

Hope this helps.
</span>
4 0
3 years ago
1. What is cultural control? What are the practices done in this approach? What are the advantages and disadvantages of cultural
timama [110]

1.a.In agriculture cultural control is the practice of modifying the growing environment to reduce the prevalence of unwanted pests. Examples include changing soil pH or fertility levels, irrigation practices, amount of sunlight, temperature, or the use of beneficial animals or insects.

1.b. Cultural control is using the production or utilization methods of a commodity with a concern for insect management. Cultural control practices are usually multipurpose technical procedures that create environments that either avoid high-risk situations for infestations or develop unfavorable conditions for pests.

1.c.Simplicity and low cost are the primary advantages of cultural control tactics, and disadvantages are few as long as these tactics are compatible with a farmer's other management objectives (high yields, mechanization, etc.).

4 0
2 years ago
Other questions:
  • A diagram that shows thermal energy being released by objects is called a ___________.
    5·2 answers
  • Which statement about how geologists study the ages of rock layers is true?
    11·2 answers
  • Dehydration reactions remove two _____
    6·1 answer
  • Scientists have genetically engineered potato plants to produce potatoes that contain edible vaccines. Which is a disadvantage o
    15·2 answers
  • Not sure need help ​
    13·1 answer
  • How does a plant obtain carbon dioxide for photosynthesis
    15·1 answer
  • Calculate ​pH a decrease of one unit on the pH scale means a solution is ten times more acidic. a decrease of two units means th
    15·1 answer
  • A moose dies because a virus passed from one individual to the next under crowded conditions during an unusually long, cold wint
    5·1 answer
  • How would the seasonal paths of the Sun change for a location that is more North of this latitude?
    14·2 answers
  • All cells regardless of type build themselves, build tissues, and transport, and make products.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!