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
-Dominant- [34]
3 years ago
5

Biology. Please help.

Biology
1 answer:
S_A_V [24]3 years ago
8 0

3. D

4. C

(DNA contains phosphorus)

From Pearson Biology book

You might be interested in
Please explain the difference between a frameshift mutation and a base substitution mutation.
harina [27]

Answer:

A frameshift changes every codon past it. A base substitution only changes one codon.

Explanation:

DNA is comprised of nucleotides (A, C, T, G) that make up amino acids. Every three bases is called a codon and represents an amino acid.

In a frameshift mutation, a nucleotide is either added or deleted from the sequence. This offsets the entire sequence after it because the reading frame shifts. Here's an example:

ACTGCTATCGTCATC

If another T is added in between the first and second codons, then every codon after will be changed.

ACT>T<GCTATCGTCATC

A substitution mutation is usually less severe, as it only alters one codon in the sequence. These occur when one nucleotide is replaced by another one. Here's an example:

ACTGCTATCGTCATC

Let's say the first G is replaced by a T.

ACT>T<CTATCGTCATC

As you can see, none of the other codons changed.

Typically, a frameshift mutation is considered worse than a substitution mutation.

7 0
3 years ago
Read 2 more answers
Cytosine makes up 24% of the nucleotides in a sample of DNA from an organism.
Alchen [17]

Answer:

26%

Explanation:

if cytosine makes up 24%, then guanine also makes up 24%.

add these to get 48%.

subtract that from 100% to get a remaining 52%

then split the 52% between adenine and thymine to tell you that 26% is thymine

7 0
3 years ago
Which organelle is responsible for breaking down the cells that once made up the tail of the tadpole?
yuradex [85]
The correct answer is lysosome! 
5 0
3 years ago
Read 2 more answers
1. In the table 1 (above), what data are necessary to determine the carrying capacity of ferrets in an area of a given size?
Vitek1552 [10]

Answer:

Explanation:

OKK GOOD PLEASE KEEP ME APPDATED

3 0
3 years ago
Read 2 more answers
What role do variations have in the theory of evolution by natural selection?
Black_prince [1.1K]

Answer:

Individuals in a population are naturally variable, meaning that they are all different in some ways. This variation means that some individuals have traits better suited to the environment than others. ... Through this process of natural selection, favorable traits are transmitted through generations.

3 0
3 years ago
Other questions:
  • A. Reactants: glucose products: oxygen
    6·1 answer
  • Explain how energy is transferred through a food chain
    5·1 answer
  • Observing specimens of land plants under the microscope, you see structures not found in algae. What challenge of living on land
    10·1 answer
  • One student made the incomplete diagram shown below to represent the relationship between magma igneous rocks and metamorphic ro
    6·1 answer
  • How do the characteristics of an organism contribute to their survival?
    12·1 answer
  • 2.
    8·2 answers
  • Down syndrome is the result of an extra chromosome 21. Which type of mutation is down syndrome
    15·2 answers
  • A large volcanic eruption can change features of Earth and
    12·2 answers
  • Can somebody help me please
    11·2 answers
  • The immediate source of the intracellular fluid surrounding all human body cells is:_____.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!