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castortr0y [4]
3 years ago
7

What is primary Succession?

Biology
1 answer:
Anna71 [15]3 years ago
7 0

Answer:

Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and other organisms usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited.

Explanation:

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The phase of mitosis that is characterized by the formation of chromatids is<br> ___
Nina [5.8K]

Answer:

The phase of mitosis where chromatids are formed is <u>Metaphase</u>

7 0
2 years ago
4) Study the wings of the birds in the two images below. Which of the following words applies to only one of the wing structures
Pani-rosa [81]

Answer:

The answer is A) Homologous structures

Explanation:

Homologous Structures:

  • Homologous structures are anatomical features in an organism that are structurally and functionally diverse but they originate from a single common ancestor.
  • Homologous structures possess a similar basic internal structure but can have entirely different morphology and function.
  • For example, the wings of a bat and a human's arm have the same internal structure but they have different functions.
  • Vestigial structures are evolutionary remnants that no longer serve a purpose in modern forms or descendants of the original organism.
  • Inherited and developmental are out of context in terms of evolutionary relationships.

6 0
3 years ago
What is the process by which substances move from areas of higher concentration to areas of lower concentration
AleksandrR [38]

Answer:

Diffusion

Explanation:

The process by which substances move from areas of higher concentration to areas of lower concentration is called diffusion.

For example:

Substance moves across a cell membrane without using the cell's energy tends to move away from the area where it is more concentrated.

It is known as passive transport.

It is the process in which substance without using the cellular energy tend to move down the concentration gradient.

It is also known as simple diffusion.

When perfume bottle is open particles spread in air due to difference in concentration from bottle to out side environment.

While,

In case of active transport substance move against the concentration gradient i.e to wards the area of higher concentration.

This process require energy.

4 0
3 years ago
What would the DNA sequence CATTAGT be transcribed to mRNA
serg [7]

to this sequence UUAGCU

This is complementary base pairing rule that DNA Transcription and Replication follow.


5 0
3 years ago
Read 2 more answers
Question 1(Multiple Choice Worth 2 points)(05.05 MC)How does the human immune system initially respond to a pathogen?
Rufina [12.5K]

Immediately, the pathogen has been recognized:

Macrophages acts as the first line of defence by engulfing pathogens identified by antigens which will now present the antibody shape to a helper T cell.

The Helper T cells produce a signal to plasma and Memory B cells to yield antibodies that attach to the antigens. The cytotoxic cells that leads to cell death are activated by the helper T cells.

Antibodies helps to immobilize pathogen for macrophage to feed on.

if the pathogen comes back a 2nd time the memory cells helps in quick and efficient recovery by producing the specific B and T cells for the antigen.

4 0
2 years ago
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