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miskamm [114]
3 years ago
12

1. How is DNA replicated?

Biology
1 answer:
7nadin3 [17]3 years ago
8 0
The initiation of DNA replication<span> occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the </span>DNA<span> double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the </span>DNA<span> strands, thereby pulling apart the two strands.</span>
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Which type of nonvascular plant grows in new or disturbed environments?
aleksandrvk [35]

Answer:

A.mosses

Option A is the right answer

3 0
3 years ago
Can someone write the first paragraph
Katena32 [7]

Hii!!

The purpose of mitosis is to create two new perfectly identical cells when either there is a need to replace old or damaged cells and to reproduce asexually by making new cells. Some organisms use mitosis to replace body parts. For example starfish replace lost arms by mitosis. Some organisms such as the hydra use mitosis to produce genetically identical offspring.

There are four stages of mitosis: prophase, metaphase, anaphase and telophase.

1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres

2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell)

3) Anaphase: sister chromatids are pulled to opposite poles of the cell

4) Telophase: nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin

● The order of the stages of mitosis can be remembered using the mnemonic PMAT.

Hope this helps!! if it has pls mark me as the brainliest Xd :D

4 0
2 years ago
The field of psychology is a collection of diverse subfields. Psychologists who conduct ____________ research contribute by expa
serious [3.7K]

Answer:

d. basic; applied

Explanation:

  • The basic research is a type of research that mainly aims to increase the existing base of the scientific knowledge and hence, in the case of psychology the basic research would increase the knowledge about psychology.
  • Therefore, the purpose of basic research is to add up to the knowledge that already exists.
  • The research that is conducted to especially solve certain problems or answer specific questions is called applied research. Its main aim is to find out the solution for a given problem.
  • Therefore, in the case of psychology applied research is conducted to explore practical problems.
8 0
3 years ago
Please HELP////2. A couple are both phenotypically normal, but their son suffers from hemophilia, a sex-linked recessive disorde
katrin [286]

Answer:

1/4 suffer from hemophilia

1/4 are heterozygous

Explanation:

So since they are normal but their son isn't it is assumed that the mom is the carrier since the dad has to be X^HY

X^HY x  X^HX^h

Set up a pedigree

X^HX^H X^HX^h

X^HY     X^hY

1/4 suffer from hemophilia (X^h)

1/4 are heterozygous (X^HX^h)

8 0
2 years ago
Easy question. Will give brainliest
Law Incorporation [45]

Answer:

The commensal relationship between the sharks and remoras can be described as although remoras consume parasites, sharks with remoras show no better health or growth than sharks without remoras.

Explanation:

A commensal relationship refers to a relationship where two or more organisms in a habitat neither benefit or harm each other.

  • The second option infers that the remoras harm the sharks. This is a parasitic relationship.
  • The third option infers that the sharks are harmed by the remoras because the sharks depend on something that the remoras are limiting. This is also a parasitic relationship.
  • The fourth option infers a commensal relationship, but falsely describes it. The relationship described by this option is a parasitic relationship (one benefits, the other does not).

Therefore, the answer is the first option: Although remoras consume parasites, sharks with remoras show no better health or growth than sharks without remoras.

5 0
3 years ago
Read 2 more answers
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