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
nasty-shy [4]
4 years ago
14

to be possible answer to a scientific question a hypothesis must be a.testable b. unique c. written d. controlled​

Biology
1 answer:
Soloha48 [4]4 years ago
4 0
A. your hypothesis needs to be testable
You might be interested in
Researchers noted that when a lysine residue on a histone is acetylated, its side chain becomes neutral in charge. Combined with
lesantik [10]

Answer:

The correct answer is A) Histone deacetylation generally decreases gene expression.

Explanation:

Histones are the proteins that are responsible for the condensation of chromatin, which is directly linked to the capacity that a gene has to be expressed. The more condensed a gene is, the less expressible it becomes.

In order to regulate the gene expression, histones can suffer from many modifications that can change their conformation and the expressiveness of specific genes.

<u>Histone acetylation is linked with an increase of gene expression; while deacetylation and methylation decrease gene expression.</u>

3 0
3 years ago
An organism that can make its own food and is composed of many cells that each contain a nucleus belongs to which kingdom?
nataly862011 [7]

1.plantae

Explanation:

hope it helps

4 0
3 years ago
In terms of gravitational political energy,what happens to a ball as it rolls down a hill?
Andrew [12]

The gravitational potential energy of the ball decreases as it rolls down the hill while the gravitational kinetic energy of the ball increases due to its acceleration in velocity.

4 0
3 years ago
Why does scientific theories change ?
suter [353]

It depends on whatever it's real or just a simple theory. But, at times it may not be simple as it seems, because theories are often left as theories. In the near future (or even now) they'll be testing to see if theories can be proven as a fact!

Good luck!

4 0
3 years ago
Which of the following statements correctly describes the Sun?
AveGali [126]

Answer:

B

Explanation:

"Energy is generated in a red dwarf in the same way that it is in the Sun, namely through the fusion of hydrogen into helium. ... So long is the process, in fact, that the lifespan of a red dwarf can be far longer than the expected age of the universe, thought to be about 14 billion years."

8 0
3 years ago
Other questions:
  • What is the role of a producer?
    11·2 answers
  • In humans, the number of tetrads formed during mitosis is ______.
    13·2 answers
  • What is the most common greenhouse gas?
    13·2 answers
  • Which of the following statements about virus structure is true?
    5·1 answer
  • How does making nectar help flowers become pollinated
    6·1 answer
  • How is all human skin alike and different?
    11·1 answer
  • The arrow points to an example of
    8·1 answer
  • Where are chromosomes located during metaphase?
    13·1 answer
  • What best describes the role of carbon in the body?
    12·1 answer
  • Se enciende la gasolina es un cambio químico o fisico?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!