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AURORKA [14]
3 years ago
10

The idea that species evolve at a slow constant rate is called

Biology
2 answers:
Montano1993 [528]3 years ago
5 0
Evolution theory 

It was elaborated by C Darwin
MAXImum [283]3 years ago
3 0

Answer: The correct answer is -

Gradualism.

Gradualism can be described as an evolutionary theory according to which evolution of organisms/species proceeds continuously at a slow and steady rate that is without any sudden formation of new biological features or sudden formation of new species from one generation to the next generation. The approach in which Charles Darwin proposed the emergence of new species (over many generations) from already existing species is attributed to gradualism.

In other words, species evolving at slow and constant rate is known as gradualism.

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Fittoniya [83]

Answer:

microorganisms

Explanation:

the shape of spirillum bacteria is spiral-shaped

4 0
3 years ago
Explain the differences between diffusion in an open system and diffusion across biological membranes.
mario62 [17]

Answer:

Diffusion : Is the movement of molecules / ions from a region of higher to lower concentration. It may or may not occur across a semi permeable membrane.

In diffusion there is no challenge involved as it is along the concentration gradient, but in active transport movement of molecules occur against concentration gradient ie; from lower to higher concentration.

2) For active transport, energy is vital for movement, in this case protein molecules function as molecular pumps to enable the cell accumulate glucose/ions, against concentration gradient. Here metabolic energy ATP is required.

3)Facilitated diffusion is a type of passive transport in which ions/molecules cross the semi permeable membrane because permeases present in the membrane facilitate the transport.

Like simple diffusion facilitated diffusion doesn't require metabolic energy and simply occurs across the concentration gradient.

4) Osmosis : is movement of water from hypotonic solution (lower concentration) to hypertonic solution (higher concentration) through a semi permeable membrane.

The cell membrane being permeable to water allows to and fro movement of water molecules along the concentration gradient.

5 0
2 years ago
How do plants compensate for the constant loss of water by transpiration?
romanna [79]

Answer:

Transpiration is the evaporation of water from the surface of leaf cells in actively growing plants. ... If water loss is greater than water uptake, air bubbles can form in the xylem. Plants reduce water loss by closing their stomata, developing thick cuticles, or by possessing leaf hairs to increase the boundary layer.

7 0
3 years ago
Which of these is a characteristic of body cells that require large amounts of energy?
Mkey [24]
I'm guessing but it seems that splitting would use the most energy. Don't take this as a correct answer!
7 0
3 years ago
The development of septa in the hyphae of fungi was an important evolutionary step. why?
Semmy [17]
Because if a hypha is damaged, fungi can seal septa pores to prevent cytoplasmic leakage.
4 0
4 years ago
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