BIOLOGY MIDDLE SCHOOL

The ______ biome is the largest on Earth, characterized by low temperatures, thin, young soil, and limited plant species.A)desert
B)taiga
C)deciduous forest
D)tropical rain forest

Answers

Answer 1
Answer: The coniferous forest biome is south of the Arctic tundra. It stretches from Alaska straight across North America to the Atlantic Ocean and across Eurasia. The largest stretch of coniferous forest in the world, circling the earth in the Northern Hemisphere, is called the “taiga. And the answer is B. Taiga
Answer 2
Answer:

Answer:

B

Explanation:

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Not all individuals in a population will survive to reproduce. Those that do, pass their___ to their offspring

Answers

Not all individuals in a population will survive to reproduce. Those that do, pass their traits to their offspring

Explanation:

Natural selection is an important process of evolution. Nature allows only the fittest to survive. Hence to survive in a particular environment an organism develops special features to adapt to that new environment. When changes happen in the environment variations happen in the genetic materials, a trait so as to survive.

Few organisms perish but few successful traits alone survive. This survived trait develop more adaptability and starts producing generations. This trait is thus passed on to their offspring.

What are the contour lines on a contour map

Answers

In cartography, a contour line joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example atopographic map, which thus shows valleys and hills, and the steepness of slopes. 

Please help ASAP! Picture

Answers

Answer:  The answers would be B, C and D

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Explanation:

In which type of exercise would fat reserves be used to create ATP

Answers

ATP is synthesizes in glycolysis, and through citric acid cycle.
In case of glucopenia (lack of sugars, after a long-term excerice), fat mobilization from adipose tissue is observed, followed by hydrolysis to fatty acids and glycerol.
Glycerol is used as a precursor in glucose recycling via gluconeogenesis: this accelerated gluconeogenesis requires energy.
Fatty acids are oxidized by beta-oxidation, pass through L-carnitine through the mitochondrial membrane (carnitine molecular shuttle) and via AcCoA into the citric acid cycle and even bring more energy that glucose burning but in the long run.

Where are the chromosomes of most organisms located?

Answers

Enclosed within the nucleolus of the cell.

Chromosomes are located within the nucleus of a cell.

In the text area below compare and contrast a cell membrane and cell wall.

Answers

Both cell wall and cell membrane are important parts of the cell, although they each have unique properties and purposes.

Cell membrane:

  • Found in both animal and plant cells.
  • Consisting of a protein-embedded phospholipid bilayer.
  • Flexible and selectively permeable, with the ability to control substances entering and leaving the cell.
  • Plays a role in cell signaling, cell identity, and interactions with the outside world.
  • Essential for maintaining the integrity and appearance of cells.
  • Provides no structural support to the cell.

Cell wall:

  • Found in various protists, bacteria, fungi and plant cells.
  • Chitin is composed of complex polysaccharides such as cellulose or peptidoglycan.
  • Stiffens and provides structural stability and protection to the cell.
  • Allows preservation of cell structure and prevents osmotic pressure-induced cell rupture.
  • Provides protection against contamination and external shocks.
  • Compared to cell membrane, less elastic and selectively permeable.

Learn more about Cell membrane, here:

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A cell membrane, seen in plant and animal cells, is selectively permeable and made of a phospholipid bilayer.

The cell membrane and cell wall control what enters and leaves the cell.

The cell wall is seen in a plant cell, gives shape to the cell, and stores carbohydrates.

The cell wall is selectively permeable and made of cellulose, which causes plants to have a rigid structure.
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To prepare for the cross-country meet, a skier decides to significantly increase the amount of carbohydrates in his diet (a technique also known as carbohydrate loading). Why might this be beneficial to the cross-country skier? Check all that apply. Carbohydrates are used to build actin filaments in the myofibrils, which increases muscle bulk and performance. The liver can store copious amounts of ingested carbohydrates as glycogen, which can then be slowly broken down to release the glucose needed to fuel aerobic respiration. As long as oxygen is present, the glucose stored in the ingested carbohydrates can provide a steady stream of ATP, thus meeting the demands of prolonged periods of exercise. Eating more carbohydrates leads to more glycogen stores in muscles, which then equates to larger energy stores for short, explosive bouts of energy use.
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