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
zavuch27 [327]
3 years ago
11

Why do some scientists believe that rna rather than dna was the first genetic material?

Biology
1 answer:
Minchanka [31]3 years ago
3 0
Certain<span> that </span>RNA<span> was the </span>first<span> molecule of heredity, so there for at the time RNA was the only thing people new that stored genetic information.                                                                                                                                                                                   hopes this helps

</span>
You might be interested in
How does the Arthropod growth curve differ from the growth curve of most other animals?
wel

Answer:

Unlike a steady pattern of growth, arthropods exhibit an external growth that proceeds in a sequence of step-like jumps, as the organism builds and replaces its exoskeleton. The arthropod does not grow bigger in size between these jumps. An aquatic arthropod gradually replaces body mass for water detained inside the tissues between molts.

7 0
3 years ago
If a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said
ankoles [38]
Remember the definition of Osmosis; Water travels through a semipermeable membrane to an area of higher to lower concentration. Since the concentration of a solute is higher outside, we can make the assumption that water concentration is lower, and so the cell is going to release water to balance out and equalize the solution and it's surroundings. 
8 0
3 years ago
1. Which variable should be changed in an experiment to test how much sodium bicarbonate will dissolve in water at 25°C?
Phoenix [80]
1.A
2.C
3.C
4.D
I belive these are correct
4 0
3 years ago
)Asexual reproduction is
r-ruslan [8.4K]
Im pretty sure that the answer is C, a method producing genetically identical offspring.
Asexual reproduction is where only one parent is involved..
5 0
4 years ago
Read 2 more answers
Alone in the woods, Pedro hears a noise. He thinks he sees a bear coming toward him. His heart starts pounding and then, a momen
pishuonlain [190]
<h2>Cannon -Bard theory</h2>

Explanation:

  • Alone in the woods, Pedro hears a noise. He thinks he sees a bear coming toward him. His heart starts pounding and then, a moment later, he realizes how frightened he is. This sequence of events is BEST explained by the <u>Cannon-Bard t</u>heory of emotion.

According to Cannon-Bard theory, all the emotional expressions occur due to the stimulation of hypothalamic structures present in brain. This theory also states that feeling and physiological effects of an emotional stimuli occurs simultaneously.

Here, James thinks that a bear is coming, this is a stimulus. His heart starts pounding that is the physiological effect of the stimulus and the next moment he feels frightened which is a feeling.

So we conclude that in this case, the physiological effect and feeling of emotion occurred simultaneously. So these sequence of events is best explained  by Cannon-Bard's theory.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is carried to the body cells by blood? (more than one)
    15·2 answers
  • What is shifting cultivation​
    11·2 answers
  • What inference could one make by observing that both of an owls eye face forward
    6·1 answer
  • What are the subunits of insulin
    10·1 answer
  • Inheritance patterns cannot always be explained by Mendels models of inheritance. If a pair of homologous chromosomes fails to s
    15·1 answer
  • Which is the immediate result of stopping the glycolysis process?
    14·1 answer
  • What will be the effect of placing a plant cell in a hypotonic solution?
    6·2 answers
  • The atmosphere is mostly made up of the gases __ and __
    7·2 answers
  • Which of the following statements is not true?
    5·1 answer
  • Select the correct statement about current hypotheses for the cause of the Cambrian explosion.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!