Answer:
D
Explanation:
Yeast cells, plant cells, and mammal cells all share many similarities in cell signaling. This provides evidence that signal transduction pathways appeared in cells before the evolution of multicellular organisms. Thus, the correct option for this question is D.
What is cell signaling?Cell signaling may be defined as a process through which a cell of an organism may respond to substances outside the cell through signaling molecules found on the surface of and inside the cell.
This biological process of cell signaling is ultimately required in order to accomplish all sorts of metabolic activities that are essential for the survival of living organisms, no matter whether they are prokaryotic or eukaryotic, unicellular or multicellular.
Therefore, the correct option for this question is D.
To learn more about Cell signaling, refer to the link:
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possible question and essays for gr 12 Life Scences
Answer:
Explanation:
Possible Essays for Life Science:
1. "Explain four management strategies to improve the quality of drinking water. Uncle Two sources of water pollution and Two effect of water pollution on human health. "
2. "Eutrophication is one of most important water quality problem South Africa. Describe Eutrophication, what causes it and how it affects water quality."
3. "Describe the significance of DNA replication and meiosis and how the foetus is protected and nourished in the uterus."
4. "Describe how meiosis contribute to genetic variation and how
abnormal meiosis leaf to down syndrome and polyploidy. Also
describe advantages of polyploidy in agriculture. "
what is the white of the eye that is protective
Answer:
The sclera, besides admitted as the whitten of your eye, in older writing, as the adventitia albuginea oculi, is the unintelligible hempen defensive outer layer of the human eyeball containing primarily collagen and any flexible fibre. Here's a visual reference:
In guinea pigs, short hair is dominant over long hair. If a short haired DD guinea pig is crossed with a long haired dd guinea pig, what are the possible genotypes and phenotypes of their offspring and the percent chance of each?
Answer:
All are Heterozygous dominant pigs in F1 generation &
In F2 generation 1:2:1 is genotype & 3:1 is phenotype
When cells lose their ability to regulate the cell cycle, they can divide an accelerated rate and from a mass of cells. This mass cells is referred to as?
Answer:
A tumor
Hope this helps! :)
Where did all of the material come from that makes up the trees?
Answer:
Explanation:
The mass of a tree is primarily carbon. The carbon comes from carbon dioxide used during photosynthesis. During photosynthesis, plants convert the sun's energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water.
PLEASE HELP!!!! Free earlobes are dominant over attached ear lobes in humans. Josiah's earlobes are free. Which of the following statements is true?
His genotype is ee.
His genotype could be Ee or EE.
His genotype must be EE.
There is no way to determine his genotype.
Answer:
EE and I'm just gonna say random thing cause I need 20 characters yes
Explanation:
because yes
Answer: could be EE or Ee
Explanation:
if something is domin over another, the capital comes first no matter what.
What do you think is going to happen to this country's population over the next 20 years?
Answer:
The second answer
Explanation:
When two species interact in a way that is beneficial to both species this is what kind of relationship?
A. Parasitic
B. Mutualistic
C. Commensal
D. Symbolic
Answer:
B
Explanation:
Mutualism is a relationship between two species in which both species benefit. Certain species of bacteria in your intestines form a mutualistic relationship with you.
Answer:
D. Symbolic
Explanation:
hope that helps you out love!! <3
Compare and contrast an ecosystem driven by photosynthesis to an ecosystem driven by chemosynthesis
Answer:
Chemosynthesis gets its energy from oxidation of inorganic substance, photosynthesis gets its energy from light.
Chemosynthesis could occur just about anywhere there are enough suitable chemicals to oxidize [metabolize], while photosynthesis could occur only when there is sufficient light.
Recent research by Ravizza and colleagues suggests that students may spend as much as one-
typical class hour browsing the internet.
half
third
fifth
quarter
Need help on this question?
Answer:
one-half
Explanation:
According to that study done by Susan Ravizza and her colleagues students spent almost 40 minutes browsing the internet for nonacademic purposes. Since one class period is 100 minutes this would put it at almost one-half of the class period. They also found that the students used their phones for texting for around 27 minutes.
Need this asap!!!
The diagram below shows part of the process of DNA transcription. Which
mRNA base will go in location 3?
A.Uracil
B.Thymine
C.Cytosine
D.Adenine
Answer:B
Explanation:
Answer: as of april 25th 2023 its D
Explanation:
thats what i got and i was right also im pretty sure that they switch the order
Create an illustration showing the application of Chargaff’s rule in the structure of DNA.
Which of these factors can help keep a freshwater resource sustainable?
O A. A growing population
O B. A new way of generating freshwater
O c. A new way of polluting water
O D. A growing demand that exceeds renewal rates
SUBT
Answer:
B.
Explanation:
A only increases the demand for freshwater, which worsens the situation.
C pollutes the water, hence making the freshwater unusable, and making it much, much more worse.
D does not change anything but make it more unsustainable.
Hope this helped!
The factors that can help keep a freshwater resource sustainable are a new way of generating freshwater, which is option B, as the growing population, a new way of polluting water, and a growing demand that exceeds renewal rates are all factors that can put a strain on freshwater resources.
What is a freshwater resource?Freshwater is a finite resource, and as the population continues to grow, the demand for freshwater increases. Climate change is also affecting freshwater availability with changes in precipitation patterns and increased evaporation rates. Therefore, it is essential to manage freshwater resources in a sustainable way to ensure that they are available for future generations.
Hence, the factors that can help keep a freshwater resource sustainable are a new way of generating freshwater, which is option B,
Learn more about the freshwater resource here.
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Along with water conservation animals also have unique characteristics for
Answer:
They may be soggy and stinky, but they provide critical habitat for tons of plants and animals, help clean our water, control floods, and provide food for humans.
Describe the anatomy of the typical long bone
Answer: HERE'S YOUR ANSWER!!!
Explanation:
Long bones are those that are longer than they are wide. The end of the long bone is the epiphysis and the shaft is the diaphysis. When human finishes growing these parts fuse together. The outside of the flat bone consists of a layer of connective tissue called the periosteum
What is the correct order for the levels of organization?
А
cell
tissues
organs
systems
organisms
B
cell
organs
tissues
organisms
organs
Oc
cell
systems
tissues
organisms
organs
cell
organisms
tissues
organs
systems
Answer: A
Explanation:
Answer:
i think A is true!
Explanation:
have a nice day:-)
The Lost generation was a group of writers,artist, and musicians, intellectuals who
Answer:
The Lost Generation refers to the generation of writers, artists, musicians, and intellectuals that came of age during the First World War and the “Roaring Twenties.” The unprecedented carnage and destruction of the war stripped this generation of their illusions about democracy, peace, and prosperity, and many ...
Explanation:
Carbon's valence is _____.
Answer:
Carbon's valence is ±4.
Explanation:
Valency corresponds to the group;
Group 1 has valency +1
Group 2 has valency +2
Group 3 has valency +3
Group 4 has valency ±4
Group 5 has valency -3
Group 6 has valency -2
Group 7 has valency -1
Group 8 has valency 0
The valency refers to how many bonds an atom will make in forming a molecule/compound;
This is also referred to as the combining power of an atom.
Meiosis is necessary for_____
reproduction.
A. Somatic
B. Zygote
C. Asexual
D. Sexual
Answer: D
Explanation: Meiosis is necessary for sexual reproduction because haploid cells which fuse during sexual reproduction to form a diploid zygote results from meiotic cell division.
SOMEONE PLZ HELP ME WITH THIS?!?!?
Table 1:
17 protons and 17 electrons
78 protons and 78 electrons
32 protons and 18 electrons
38 protons and 36 electrons
13 protons and 13 electrons
15 protons and 18 electrons
14 protons and 14 electrons
Table 2:
Ba2+ ion
Radon
Polonium
Tin
Selenium
Cesium
Magnesium Ion
IT WAS SUPER TOUGH!!!
Answer:
oh too hard
Explanation:
5. Bagaimanakah penggunaan plastik serai wangi ini dapat menjaga kesihatan?
Answer:
It has a lot of health benefits of fragrant lemongrass.
Explanation:
The use of this fragrant lemongrass take care of your health by preventing the growth of some bacteria and yeast. It also used to relieve the pain and swelling, reduce fever, improve sugar levels and cholesterol in the blood. It also have antioxidant properties which prevent the chances of diseases in the body. It is also used for the insects as an insect repellent, in short, fragrant lemongrass has a lot of health benefits.
FIRST ANSWER BRAINLYIEST
An experiment was conducted in which a purified protein from the body was exposed to a solution high in urea, and its tertiary structure was lost. When it was removed from the solution, the protein regained its original structure.
Which of the following describes what is occurring when the protein is exposed to the solution high in urea?
A. The side chains of the protein react with the urea, breaking bonds, which causes a conformation change.
B. The sequence of amino acids rearranges in a toxic environment, which causes a conformation change.
C. Urea reacts with the side chains of the protein sequence that causes a conformation change.
D. The side chains of the protein react with urea, forming new bonds that cause a conformation change.
Answer: A
Explanation: I believe its A cause it will cause the breakage of bonds.
Birds belong to different species but share similar characteristics. What inference can be correctly drawn about this statement? (5 points)
Group of answer choices
All birds share the same habitat.
All birds produced similar offspring.
All birds reproduce with genetic variation.
All bird species adapt through evolution
Answer:
All bird species adapt through evolution
Explanation:
The correct answer would be that all birds reproduce with genetic variation and adapt through evolution.
Sexual reproduction causes genetic variation in sexually reproducing organisms due to crossing over and a random assortment of genes. Birds can only reproduce sexually and hence. they produce offspring that are genetically different but that might share many similar characteristics.
Evolution refers to the development of complex organisms from simple ancestral ones. Organisms change and evolve as they constantly try to adapt to their changing environments. Hence, organisms of the same species growing in a different environment might end up becoming different species as a result of adapting to their different environments, although they would still have some similarities to one another. In other words, evolution has a tendency to cause speciation.
Which fossil fuel is made when plants from swamps are covered, pressed and heated for millions of
years?
A Coal
B Petroleum
C Natural Gas
D Nuclear
Answer:
petroleum i think , i may b wrong
Answer: A Coal
Explanation:
Match the age group with the recommended therapeutic consideration. Place the letter of the age group in the column labeled matching thats is appropriate for the the therapeutic consideration
Answer:
E
Explanation:
e
(NOW PLSSS I’LL GIVE BRAINLIEST) Ally sees a photograph of a macaroni penguin that lives in South Georgia, a sub-Antarctic island. She reads more about these penguins
and learns that they mate for life. She knows that not all animals mate for life and that there are various combinations of mating systems,
Describe two mating systems, and explain why different systems exist.
Answer:
It depends on their life expectancy. There is an bird that is born and dies on the same day (sorry I cannot remember the name) so as soon as they can mate, they mate until death. Not every animal mate for life because they live longer. Animals that mate for life mate because they have a short life so they do this to continue the population.
what is osmosis biology
Answer:
osmosis is the movement of water molecules through a semi permeable membrane from a region of higher concentration to lower concentration
Answer:
osmosis is the movement of water molecules through a semi permeable membrane from a region of higher concentration to lower concentration
Explanation:
just did the question
PLEASE HELP me solve this!!!
Water is able to pass through the tubing.
Which best matches objects that a scientist would include on a list describing a forest ecosystem?
Answer:
The interpretation has been outlined throughout the summary section below, as per the particular circumstance.
Explanation:
A forest or woodland habitat comprises a large field of soil that is covered by forest vegetation and inhabited by food creatures. Three major forest types occur, namely trees and shrubs plantations, mangrove swamps, as well as deciduous trees. This could be claimed that somehow natural vegetation has become an organic unit consisting of almost all of the aquatic biota, that is, have all organisms, creatures of that area that act throughout accordance because of all the resources of the atmosphere that seem to be non-living.
Question 2 (1 point)
The theory that all of the continents were once in one location in the form of a
"supercontinent" is called...
Pygmalion
Patagonia
Pangea
Ponderosa
Answer:
Pangaea
Explanation:
continental drift
Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek. He suggested that Pangaea broke up long ago and that the continents then moved to their current positions. He called his hypothesis continental drift.
Answer:
I think it's the 3 one
Explanation: