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
artcher [175]
3 years ago
10

What are the characteristic of all chordates at some point during their life cycle?

Biology
1 answer:
Eddi Din [679]3 years ago
8 0

Answer:

<em>Possession of notochord</em>

<em>Possession of dorsal hollow nerve chords.</em>

<em>Possession of pharyngeal gill-slits</em>

<em>Possession of  tail</em>

Explanation:

All animals in the chordate group posses the following characteristics either throughout their entire life cycles or at some points in it:

<em>Presence of notochord</em>

<em>Presence of dorsal hollow nerve chords.</em>

<em>Presence of pharyngeal gill-slits</em>

<em>Possession of  tail.</em>

You might be interested in
Which diagrams shows reaction pathway that absorbs energy?
postnew [5]

Question:

<em>The diagram shows the potential energy changes for a reaction pathway.</em>

Part 1: Does the diagram illustrate an endothermic or an exothermic reaction? Give reasons in support of your answer.

Part 2: Describe how you can determine the total change in enthalpy and activation energy from the diagram and if each is positive or negative.

Answer:

Part 1: The diagram illustrates an endothermic  reaction as the products has a higher potential energy than the reactants do. There is a positive slope of the diagram and there is enough energy to meet the activation energy requirement.

Part 2: You can determine the total change in enthalpy and activation energy from the diagram by the potential energy of the reactants. If the reactants have a high potential energy, then the enthalpy is also high, and if the reactants have a low potential energy, then the enthalpy is low. You can determine if the diagram is positive or negative by knowing if its an endothermic or exothermic reaction. An endothermic reaction is positive because the products are higher than the reactants and a exothermic reaction is negative because the reactants are higher than the products.

8 0
3 years ago
MEDALSS!!
lawyer [7]
During the S phase in the cell cycle, the chromosomes are replicated so that there are two copies. These copies are necessary so that each daughter cell created during the M phase will have an identical copy of the DNA.

Therefore, the answer is A: The DNA must be replicated. 


The chromosomes joining, cell membrane expanding, and cytoplasm separating all happen during the M phase (mitosis).
4 0
3 years ago
What is the difference between type A and type B blood?
dangina [55]
It is very easy and simple difference that is antigens and antibodies .
it can be different due to donor and recipient also .
A type blood having antigens
whereas B type blood having nil.

B type blood having antibodies
whereas A type blood having nil.


4 0
3 years ago
How carbon is absorbed?
Aleksandr [31]
Through the atmosphere and through <span>oceanic conveyer belts that act as physical pumps</span>
5 0
3 years ago
Do enzymes change during a chemical reaction
mojhsa [17]

Answer: enzymes change the Keq for chemical reactions.

Explanation: many enzymes change shape slightly when substrate binds. reactions occur at the "active site" of enzymes, where a precise 3D orientation of amino acids is an important feature of catalysis.

4 0
3 years ago
Read 2 more answers
Other questions:
  • A patient presents to the emergency department with weight loss, petechiae, and splinter hemorrhages. the patient's vital signs
    10·1 answer
  • Energy production can cause soil contamination and impact agriculture. <br><br> True or false?
    13·1 answer
  • fungal and protist infections, especially those that are deeper than the skin, are especially hard to treat. why?​
    6·1 answer
  • What is the body's tendency to maintain relatively stable internal conditions in spite of greater changes in its external enviro
    8·2 answers
  • PLZ HURRY IT'S URGENT!!!!
    15·1 answer
  • Which neurotransmitter is a major regulator of mood and behavior and can be chemically altered using drugs like Prozac or Zoloft
    9·2 answers
  • What is the structure of a Triglyceride?
    9·1 answer
  • Helpppppppjtyjyf fdfdfd
    8·1 answer
  • Discribe the processes of transcriotion and translation
    9·2 answers
  • When new habitat is made available, organisms can diversify rapidly. this can be gradual or punctuated. what is this process cal
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!