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
ICE Princess25 [194]
3 years ago
7

Why is a DNA molecule called a double helix?

Biology
2 answers:
krok68 [10]3 years ago
5 0

Answer:

A

Explanation:

Because there are two DNA strands in the DNA molecule and they both rotate around each other in a helix formation. So two helixes = double helix.

kap26 [50]3 years ago
5 0

Answer:

A

Explanation:

You might be interested in
The population of frogs in a pond ecosystem is increasing. The population of flies will most likely do what?
34kurt
Decrease as the more frogs there are the more flies  will be eaten so that means the flies will decrease.Also if the flie population gets low enough the frog population would shrink too to balance it.

6 0
3 years ago
A researcher while working in vitro (outside cell) added helicase enzyme which resulted in the untwisting of the DNA helix. But
STALIN [3.7K]
Topoisomerase is the enzyme that can be added to correct the untwisting that is led to strain ahead of the replication fork. 
3 0
3 years ago
Read 2 more answers
After infection of a cell, a viral particle must transport itself to the nucleus in order to produce viral proteins. What is the
kykrilka [37]

Answer:

Double-stranded DNA

Explanation:

If a virus requires to transport its genome in the nucleus to produce viral protein then the viral genome content must be DNA. This DNA of the virus will use the RNA polymerase of the host cell and will first convert into mRNA in the nucleus.

Then the mRNA of the virus will come out of the nucleus because the protein synthesis takes place outside the nucleus and in the cytoplasm. So in the cytoplasm by using host translational machinery the viral mRNA will code for viral proteins. So the correct answer is double-stranded DNA.

3 0
3 years ago
Question 7 in the attachment, please help thank you so much!
sertanlavr [38]

Answer:

Here are the answers:

a. 4  Cell determination as an issue in the *rest is missing*

b. 4  They assumed that different ways of separating an embryo into two parts would be equivalent as far as the fate of the two parts was concerned.

c. 4  I and III only

Explanation:

The passage demonstrates the importance of two factors in the development of an embryo: cleavage planes of division of embryonic cells and cell differentiation.

Cleavage Planes:

Cleavage basically refers to the division of the zygote into a large number of cells called blastomeres. Cleavage planes are geometrical lines or orientations along which cleavage takes place. Since, all embryonic cells are the precursors of some type of body cells, the cleavage planes determine if the cells are adequate for growth and development.

Cell Differentiation:

Cell differentiation is the transition of an undifferentiated cell into a specialized one. For example, stem cells are undifferentiated cells that develop into progenitor cells that mature into a specific cell lineage. For an embryo to regenerate, the presence of adequate embryonic stem cells is crucial. Embryonic stem cells are present in abundance before the gastrulation phase of embryonic development, after which they rapidly start differentiating.

5 0
3 years ago
how would you conduct your investigation? in your answer, explain your independent and dependent variable
Mademuasel [1]

Answer:

ow would you conduct your investigation? in your answer, explain your independent and dependent variable

Explanation:

7 0
4 years ago
Other questions:
  • Please help me!! :((
    12·1 answer
  • Which of the following is not an example of an organism responding to a stimulus
    5·1 answer
  • What is the role of acetylcholine in a skeletal muscle contraction
    13·1 answer
  • What did the Miller-Urey experiment demonstrate?
    13·1 answer
  • Energy drinks have become increasingly popular. Somebody's trying to contain large amounts of caffeine which is known to increas
    10·1 answer
  • What is a common role of a coenzyme in a reaction as stated in class Group of answer choices To lower the activation energy of a
    8·1 answer
  • A cylinder has a base radius of 7in and a height of 3in. What is its volume in cubic in, to the nearest tenths place?
    7·1 answer
  • How can we decide the direction of the magnetic field?
    15·1 answer
  • Please help i'm taking a test
    12·1 answer
  • Which layer of the meninges surrounding the brain resembles a spider web?.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!