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MA_775_DIABLO [31]
3 years ago
8

. Which of the following is an example of how a scientist might use a model?

Biology
2 answers:
Serhud [2]3 years ago
6 0

Answer:

its A

Explanation:

DedPeter [7]3 years ago
5 0
Answer: <span>Marbles placed inside a hollow sphere are used to describe protons in a nucleus.

Models are artificial representations used to show some phenomena or features of the real world.

In this case, it has been used a sphere and marbles, to represent the fact that nuclei of atoms contain inside some smaller partilces which are the protons.</span>
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If an Arctic polar bear is transferred to a zoo in tropical Singapore, it will not be able to survive. What could be the reason
andrew11 [14]
A, because its thick fur is designed to keep it warm, it would over heat and unfortunatly die
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3 years ago
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Cell-to-cell communication is absolutely essential for multicellular organisms. But how do plants communicate when their cells a
nevsk [136]

Ans.

Cell-to-cell communication allows signalling of essential substances between the plant cells, which are surrounded by cell walls. The molecules used by plants for long-distance signalling are known as hormones, such as auxin, ethylene, and gibberelin.

These hormones are secreted by one plant cell and received by another plant cell, where it exerts it affect. Thus, the correct answer to be fill in the blank is 'option A). hormones.'

3 0
3 years ago
The Neanderthal copy of a gene crucial for language (FOXP2) more closely resembles the same gene in chimpanzees than in humans,
liraira [26]

Answer:

b. False

Explanation:

FOXP2 gene is required for language and speech development and is present in all animals. It is a transcription factor which encodes for a regulatory protein. Both modern humans and Neanderthals share FOXP2 gene which differs from chimpanzee version by two amino acids. Its the different regulation of the same gene which made modern humans more capable of  using language and speech. Neanderthals did use language rudiments but not completely constructed languages. There might be other speech genes involved too which differed between modern day humans and Neanderthals but not FOXP2.

3 0
3 years ago
A Chlorella cell viewed through a microscope is 0.00005 m wide when the magnification is 2000.
juin [17]

Answer:

0.0025micrometer.

Explanation:

To calculate the actual size of the image, the formula to be used is

Actual size=Image size÷magnification.

The image size is 0.00005 wide

Magnification is 2000

First, convert the image size to micrometer.

=0.00005 × 1000000

50micrometers.

Actual size= 50÷2000

Actual size = 0.0025

3 0
3 years ago
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AlekseyPX

Answer:

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Bacteriophages have a lytic or lysogenic cycle. The lytic cycle leads to the death of the host, whereas the lysogenic cycle leads to integration of phage into the host genome.

7 0
2 years ago
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