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I am Lyosha [343]
3 years ago
6

1. Which sign is NOT for a chemical change?

Biology
2 answers:
lisabon 2012 [21]3 years ago
6 0
Hi!
During a chemical reaction, some of the basic signs that a chemical reaction is occurring is a color change and heat / light also burning . You can clearly see these changes happening

But changes in volume is a physical property, not a chemical.

I hope this helps!
IRINA_888 [86]3 years ago
4 0
B.Change in volume Because if it Changes colors or heats up that means a chemical reaction is happening or has happend
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How can the random distribution of alleles result in a predictable ratio?
levacccp [35]
Phenotypically and genotypically there are only two different ratios. If you think of a Punett square... 

<span>You could say that a pea plant with the trait for the dominant color green (G) could also carry the recessive trait for yellow (g). So let's say you mate a dominant green, (Gg) with another dominant green, (Gg). You would get 1 (GG), 2 (Gg) and 2 (gg). </span>

<span>Phenotypically (as in physical traitwise), the ratio is 3:1 because you have 3 green colored peas and one yellow. </span>

<span>Genotypically (as in traitwise), the ratio is 1:2:1, because you have 1 (GG), 2 (Gg) and 1 (gg). </span>

<span>So although it's random, for any specific trait there are only 4 different outcomes.</span>
4 0
3 years ago
1 . the maintenance of a relatively constant state in the internal environment of the organism 2 . plant-eating animal 3 . all o
mariarad [96]

Answer:

A. Pathogen- 4

B. aerobic- 7

C. hypothesis- 6

D. herbivores- 2

E. one another differentiation -5

F. homeostasis- 1

G. metabolism- 3

Explanation:

A. Pathogen- a pathogen is a living organism which can feed on other organism and can utilise their cellular components for their own survival. This affects the host cell and they get infected and the pathogen thus causes disease.

B. Aerobic- The oxygen appeared on Earth later compared to the time life originated on earth. Therefore some organism living today can use oxygen for survival and some not. The organism which utilises oxygen for their survival is known as aerobic microorganisms.

C. Hypothesis- The hypothesis is a predicted statement formulated based on the study related to the natural event which can explain the natural event.

D. Herbivores- The organism which cannot make food for themselves on their own but rely on another organism, especially the plants, are known as the herbivores.

E. Differentiation- Differentiation is the process which forms a variety of cells from a single cell and can perform different functions.

F. Homeostasis- is the mechanism which can maintain the internal conditions of the organisms.

G. Metabolism- refers to the chemical reactions which can help perform the normal functioning of the organism.

8 0
2 years ago
Put the following steps in the correct order from 1-9
storchak [24]

Answer:

transcription of mRNA from DNA

small ribosomal subunit binds to mRNA

initiation complex formed with addition of large ribosomal subunit

translocation

codon recognition (non-initiating site)  

peptide bond formation

ribosome reads a stop codon

polypeptide chain is released from the P site

ribosomal subunits dissociate

Explanation:

The above describes the process of translation in the ribosome. After transcription of DNA to mRNA, the mRNA is taken to the ribosome to undergo translation, here the mRNA binds to the small ribosomal subuits and to other initiation factors; binding at the mRNA binding site on the small ribosomal subunit then the Large ribosomal subunits joins in.

Translation begins (codon recognition; initiating site) at the initiation codon AUG on the mRNA with the tRNA bringing its amino acid (methionine in eukaryotes and formyl methionine in prokaryotes) forming complementary base pair between its anticodon and mRNA's AUG start codon. Then translocation occurs with the ribosome moving one codon over on the mRNA thus moving the start codon tRNA from the A site to the P site, then codon recognition occurs (non-initiating site again) which includes incoming tRNA with an anticodon that is complementary to the codon exposed in the A site binds to the mRNA.

Then peptide bond formation occurs between the amino acid carried by the tRNA in the p site and the A site. When the ribosome reads a stop codon, the process stops and the polypeptide chain produced is released and the ribosomal subunits dissociates.

6 0
2 years ago
What would life be like without plate tectonics
emmasim [6.3K]
 It really is impossible to predict such a matter. I mean, think about it, its nearly impossible to think about how earth would be impacted if the heat from the interior of the planet that powers plate tectonics were to suddenly cease to exsist, or if that heat never exsisted in the first place, because that is how planets are formed.
 One thing is certain however, life wouldn't be the same without plate tectonics; in one case, the constont transgression/regression, sue in large part of tectonic forces acts as a evolutionary pump forcing life to evolve. EXAMPLE:  the evolution of plants from marine to terrestrial settings. Without plate tectonics, life would certainly be dramatically different.
~This is an edgucated guess. :)  I hoped i helped. :)
5 0
3 years ago
Imagine that feeding behavior was eliminated when a radio-frequency lesion was used to damage the lateral hypothalamus of a rat,
Ipatiy [6.2K]

Answer:

D

Explanation:

The changes in eating noted in the first study are due to fibers that are passing through the lateral hypothalamus. The lateral hypothalamus is a region of the brain with a key function of coordinating an array of cognitive and physical processes such as feeding

5 0
2 years ago
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