BIOLOGY HIGH SCHOOL

Topsoil is _____.a. less fertile than the C horizon
b. rich in minerals and organic material
c. found below the B horizon
d. very resistant to wind erosion

Answers

Answer 1
Answer:

Answer: The correct answer for the blank is- b. rich in minerals and organic material.

Topsoil is the outermost layer of the soil, which is generally 5 to 10 inches in thickness. This layer is enriched with minerals, organic matter, and microorganisms. It is the site of maximum biological activity that occur on the earth. Roots of plants are also concentrated in this layer so that they can absorb all the nutrients essential for the growth of plant.

Thus, option B)  rich in minerals and organic material is the right answer.
Answer 2
Answer: b. Rich in minerals and organic material.

Due to the decomposers found in there.

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DNA in the nucleus is impacted in large structure called? Is it chromosome?
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A structure outside the plasma membrane in some cells is the _____

Looking at a cell under a microscope, you note that it is a prokaryote, how do you know?A) The cell lacks cytoplasm.
B) The cell lacks cell membrane.
C) The cell lacks nucleus.
D) The cell lacks genetic material.

Answers

C) The cell lacks nucleus.

A Prokaryotic cell does not contain a nucleus. It only contains one chromosome and is a single-celled organism. It was the only form of life on earth for millions of years. Examples of a Prokaryotic cell are the different types of bacteria present today. 
A Eukaryotic cell contains a nucleus; more than one chromosome and is typically a multi-celled organism.  Both plant and animal cells are eukaryotic cells.

The characteristic feature of prokaryotes cells is that they lack the nucleus.

Further Explanation:

An ecosystem is made up of mainly two kinds of cells:

  • Eukaryotes cells: They mainly consist of a group of animals, fungi, and plants.
  • Prokaryotes cells: They mainly consist of bacteria and archaea.

The single-celled organisms such as bacteria and archaea are the prokaryotes. Cyanobacteria are an example of prokaryotes that synthesize their own food by the process of photosynthesis. The cellular organization of prokaryotes is very simple. Some main features of prokaryotic cells are:

  • They don’t possess membrane-bound organelles and nucleus  
  • The DNA of a prokaryotic cell is found in the cytoplasm of the cell which is mainly called the nucleoid.
  • The size of the cells is around 0.1 to 5.0μm in diameter.
  • The prokaryotic cell wall provides more protection than the eukaryotic cell wall. They also maintain the shape of the cell and provide protection against dehydration.

Learn more:

  1. Learn more about cell organelle brainly.com/question/5923583
  2. Learn more about the diffusion brainly.com/question/1386629
  3. Learn more about the plant brainly.com/question/862697

Answer Details:

Grade: High School

Subject: Biology

Chapter: Plant Cell

Keywords:

Photosynthesis, dehydration, eukaryotic cell, prokaryotic cell, cytoplasm, single-celled, organism, bacteria, archaea, animal, fungi.

The avoidance of personal prejudice or bias is an important trait of a scientist. a. True
b. False

Answers

true- it's not good if the scientist changes the outcome and reads data with a bias because then it's not 100% honest. 

The trunk of a tree carries out functions that are similar to the functions performed by which pair of human body systems?

Answers

Answer: The skeletal system and the circulatory system

Explanation:

The trunk of the tree helps in transporting the water and food materials to various parts of the plant.

The trunk of the plants provides it support and allows the movement of the substances from the roots to the other parts of the tree.

The skeletal system of the human body provides structural support to human body. The circulatory system of the body helps in transporting materials fro one part  to another in the body.
the trunk of the tree is the main body and support of/for the tree, and just like our blood vessels has veins that carry water and nutrients

Which if these is an example of behavioral isolation

Answers

“Two species of crickets, Gryllus rubens and Gryllus texensis, have different courtship songs which can be identified only by the opposite sex of their own species” is an example of behavioral isolation.

 

Behavioral isolation is an important evolutionary mechanism that helps members of the same species identify each other as proper mates.

 

The correct answer between all the choices given is the third choice or letter C. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

If a gallon of milk and a cup of milk are both at 8C, the what of the gallon is higher

Answers

 A. potential energy because it depends on mass and the gallon has more mass. 

How are alleles are passed from the parents to the offspring

Answers

Allels are passed theough reproduction and they are shown by the dominant trait. A homozygous recessive gene is passed to 25% of the second generation if offspring. You can find the genes passed down by using a punnete square
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