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Sati [7]
3 years ago
6

Similarities and differences between deserts and rainforests

Biology
2 answers:
viva [34]3 years ago
8 0
The Earth is made up of six kinds of biomes; the majordifference between<span> each type of ecosystem is the climate. Tropical </span>rainforests<span> cover the area </span>between<span> the Tropic of Capricorn and the Tropic of Cancer and tend to be warm and wet. </span>Deserts<span>, on the other hand, are hot and dry and have very little annual rainfall.</span>
elena55 [62]3 years ago
3 0

Answer:

potato

Explanation:

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Question 15 (1 point) Which of the following demonstrates positive phototropism? bean plants twisting around a bean pole 12 a ho
Pavlova-9 [17]

Given what we know, we can confirm that among the options listed, the more appropriate example of positive phototropism is the <u><em>houseplant </em></u><u><em>growing towards the </em></u><u><em>window</em></u><u><em>. </em></u>

<h3>What is positive phototropism?</h3>
  • This is a photosensitive reaction that occurs in plants.
  • Positive phototropism is described as the growth of plants towards the source of light.
  • While negative phototropism is when the plants lean away from the light.
  • Sunflowers and bananas, which lean towards the sun as they grow, are prime examples of positive phototropism.

Therefore, given the definition of positive phototropism as the growth of an organism towards a source of light, we can confirm that the option stating that the <u><em>houseplant </em></u><u><em>grows towards the window</em></u> is the best example of this concept, given that the window is the source of light for the plant.

To learn more about phototropism visit:

brainly.com/question/16915126?referrer=searchResults

7 0
2 years ago
Explain the mechanisms for movement of materials across cellular membranes anatomy
trapecia [35]
There are 2 types of transport mechanisms that involve the movement of materials across the cellular membrane:

1. Passive Transport Mechanisms which is the movement of materials that does not require energy. Instead the movement relies on the permeability of the cell. Under this are three kinds of passive transport mechanisms:

a. Simple Diffusion: 
- the movement of materials from a region of higher concentration to lower concentration. No external energy is necessary for the movement. The materials supply the energy themselves. 

b. Facilitated Diffusion:
- This differs from simple diffusion because the movement is facilitated by proteins that make up the structure of the membrane. The proteins include channel proteins that allow ions and smaller molecules to cross the membrane. The other protein are the carrier proteins, which bind to materials like sugar molecules and move it across the membrane.  

c. Osmosis:
- This is the diffusion of water across the membrane. Osmosis moves water from regions where there are more water molecules of water per volume to regions where there are less water molecules per volume.  

2. Active transport on the other hand is a movement mechanism that requires energy. It uses the energy to send materials against the direction it is coming from through simple diffusion. This mechanism is used in a way to keep unwanted ions or other materials out of the cell.
6 0
3 years ago
The wild-type form of a gene encodes a protein of length 100 amino acids. A mutant allele has a UAA (instead of the wild-type, C
Orlov [11]

Answer:

48 amino acids

Explanation:

The wild type gene codes for a protein with 100 amino acids. One amino acid is encoded by one triplet code of the gene. This means that the wild type gene has a total 100 triplets or 300 nucleotides to code for a protein of 100 amino acid. Mutation in this protein has introduced the code "UAA" at the 49th codon. The code "UAA" is a stop codon. Therefore, the mRNA transcribed from the mutant allele would code for a protein having 48 amino acids as the protein synthesis will be stopped once the stop codon at the 49th position is read.

8 0
3 years ago
An experiment which seems to validate a hypothesis:
Elis [28]
Hi!

The answer is B) it should be repeated by other scientists.

Hope this helps!

-Payshence xoxo
4 0
3 years ago
During the twentieth century,what was added to the relative time scale
liubo4ka [24]
<span>During the twentieth century, absolute date was added to the relative time scale.  </span>Geologic time scale uses both relative and absolute dating techniques.  <span>Soon after the discovery of radioactivity, geologists used radioactive isotope decay to develop a method for determining absolute ages of rocks</span>
5 0
3 years ago
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