true or false the mitochondria and chloroplasts are thought to have evolved by invagination and pinching off from the plasma membrane of the ancient eukaryotic cell.
Answers
The given statement is true. The mitochondria and chloroplasts are believed to have evolved through endosymbiosis, where free-living prokaryotic organisms were engulfed by larger eukaryotic cells.
It is believed that the mitochondria evolved from an ancestral aerobic prokaryote that was engulfed by an ancestral eukaryotic cell, while the chloroplasts evolved from an ancestral photosynthetic prokaryote that was engulfed by an ancestral eukaryotic cell. Over time, these endosymbiotic relationships became mutually beneficial, leading to the development of organelles with specialized functions within eukaryotic cells. The smaller cell became a mitochondrion or chloroplast, providing the host cell with energy or carrying out photosynthesis, respectively.
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Related Questions
How are carbon-based molecules suited for sustaining life?
Answers
Answer:
Life on Earth is based on carbon, likely because each carbon atom can form bonds with up to four other atoms simultaneously.
Explanation:
This quality makes carbon well-suited to form the long chains of molecules that serve as the basis for life as we know it, such as proteins and DNA.
Which sex chromosome determines the sex of a baby?
Explain your answer.
Answers
Answer:
Girls have two X chromosomes and boys have chromosomes (XY).
Explanation:
Girls have two X chromosomes (XX), and boys have one X and one Y chromosome (XY). Whether a baby will be a boy or a girl is determined at the time of conception.
two different species attempt to reproduce, but their offspring is unable to undergo proper mitosis because it has two different sets of chromosomes. this type of reproductive barrier is best described as mortality.
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Two different species attempt to reproduce, but their offspring is unable to undergo proper mitosis because it has two different sets of chromosomes is called as hybrid inviability.
Hybrid inviability occurs when two different species attempt to reproduce, but their offspring is unable to undergo proper mitosis due to having two different sets of chromosomes. This leads to the death or mortality of the offspring, as it cannot develop or survive properly.
A post-zygotic barrier known as hybrid inviability hinders a hybrid's development into an adult who is fit and healthy. The moderately low wellbeing of these crossovers comparative with unadulterated variety people forestalls quality stream between species.
For instance, the hybrid embryos of sheep and goats die before birth in the early stages of development. Plant hybrid inviability is common; hybrid seeds frequently die soon after germination or fail to germinate.
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exotoxins can be denatured by iodine to form __________, which are useful in vaccines.
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Hope this helps! :)
When pressure is applied to a fluid in a closed container,
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Differentiate between Gene and chromosomes. (any four differences )
plz hurry
who ever will give at least 4 differences would be marked as brainlist.
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2) Gene mutations are small, but chromosome mutations are large.
3) Genes are composed of either DNA or RNA, but chromosomes are composed of DNA, RNA AND Histones.
4) A single gene is a locus on chromosome, but a single chromosome compromises of many genes.
Hope this helped :)
A married couple and their unmarried children living together constitute a (an)
a.nuclear family
b.extended family
c.matrilineal family
d.bilateral family
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A husband, wife, and their children, whether they were born to them or were adopted, all live in the same place. This is called a "nuclear family." So the correct answer is option a nuclear family.
In a nuclear family, the husband and wife are usually the ones who take care of and provide for their children the most. They work together to raise and provide for their children, make choices, and run the house. Most of the time, the attention is on the immediate family unit, or "nuclear family." The relationships within a nuclear family are strong and emotional.
This kind of family arrangement is common in many parts of the world, especially in the West. But it's important to remember that family structures can be different in different cultures and societies, and that extended families and other forms of kinship may be common in some areas or groups.
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What should I take single science biology, or all 3 (physics, biology, chemistry) for GCSE? Plez i don't know what to decide on... I am so stuck. I don't like blood and stuff related to the like. However, if I take A level biology I have a better chance of getting to uni and I like biology but I'm pretty much an air head. Can you give me any answers? Plz
Answers
Answer:
id say all
Explanation:
The tension that is created when an organism has a need that must be met is called:.
Answers
Answer:
In his theory, Hull used the term drive to refer to the state of tension or arousal caused by biological or physiological needs. Thirst, hunger, and the need for warmth are all examples of drives. A drive creates an unpleasant state, a tension that needs to be reduced.
Explanation:
Please give me brainliest;)
Which of the following provides evidence to support the continental drift theory?
Mapping of the ocean floor using sonar shows plates moving apart
Shape of continents look like puzzle pieces that can fit into one another
Spreading apart of the seafloor at the divergent boundary of the mid-ocean ridge
Symmetrical pattern of magnetic stripes in the crust on both sides of the mid-ocean ridge
Answers
Answer:
shapes of the continents look like puzzle pieces that can fit into one another
Answer:
A
Explanation:
In a certain plant, yellow leaves are dominant (Y) and red leaves are recessive (y). Plant with genotype Yy and a plants with yy crust. If they have for offspring how many would you predict would have red leaves? (Hint: draw a punnett square to help you determine the answer)
Answers
Answer: 1
Explanation:
a p e x
Answer:
1
Explanation:
please help i need this today
Answers
Answer:
pdf wont work
Explanation:
This model shows the process of transcription. Which of these best explains the role of DNA and RNA in transcription? Choose ALL
that apply.
A)
RNA is formed from DNA nucleotides.
B)
DNA serves as the template
for making RNA.
C)
RNA copies a small segment of DNA using RNA polymerase.
D)
DNA contains the entire genome, but in transcription, a small segment is
copied into RNA.
E)
DNA contains the entire genome, and the entire genome is copied into
RNA that can travel to the ribosome.
Answers
Answer: B,C,D
Explanation: The answer is B,C,D because I did it on usatestprep.
DNA serves as the template for making RNA.RNA copies a small segment of DNA using RNA polymerase. DNA contains the entire genome, but in transcription, a small segment is copied into RNA best explains the role of DNA and RNA in transcription
what are the function of RNA polymerase ?
there are Three different types of RNA polymerases (RNAPs), which transcribe eukaryotic genes, such as RRNA genes are transcribed by RNA polymerase I.
mRNA, miRNA, snRNA, and snoRNA genes are mainly transcribed by RNA polymerase II, while tRNA and 5S rRNA genes are transcribed by RNA polymerase III.
short RNAs as well as the protein coding genes are both transcribed by RNA polymerase II.
A Separate type of RNA polymerases are present in chloroplasts and mitochondria, where they specifically transcribe the DNAs of those organelles.
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5. Which component of the nucleotide is the red arrowpointing at?
(This component makes up the genetic code! Ex.ATTGCA)
Answers
Answer:
organic nitrogen (or nitrogenous) base
In studying a particular biomolecule (a protein, nucleic acid, carbohydrate, or lipid) in the laboratory, the biochemist first needs to separate it from other biomolecules in the sample (that is, it needs to be purified). Specific purification techniques are described later in the text. However, by looking at the monomeric subunits and functional groups of a biomolecule, you should have some ideas about the characteristics of the molecule that would allow you to separate it from other molecules. Look for differences in ionizable groups, polarity, solubility in water, size, and shape. Based on the characteristics of each type of molecule, select the way(s) in which amino sugars such as glucosamine could be separated from steroid hormones such as estradiol
Answers
Answer:
Sugars can be separated from steroidal homones by observing the solubility of these two molecules in water and observing the presence of a negatively altered group in one of the two molecules.
Explanation:
Steroid hormones are molecules derived from cholesterol and usually present a negative change in their structure, which differs from sugars such as carbohydrates and allows these two molecules to be purified, being isolated from each other.
Another way of purifying these two molecules is to observe the solubility of both in water, since sugars are completely soluble in water, without altering the osmotic balance of the cells, however, the same cannot be observed with steroid hormones.
A population stated with 100 individuals. There were 14 births, 20 deaths, and 2 new individuals immigrated into the population. As a percentage, what rate did the population change?
Did the population increase or decrease?
Answers
The rate of population change in the population is -4%
This shows that the population decreased.
What is population?Population is defined as the total number of individuals of the same species found in a given place or habitat.
The population of individual species usually change over time.
The changes that occur in a population of individuals may be as a result of:
new birthsdeathsimmigration of species into the habitatemigration of species of the habitatThe rate of population change is calculated as follows:
Rate of population change = change in population/original population * 100%Initial population = 100
Final population = 100 + (14 + 2 -20)
Final population = 96
Rate of change of population = (96 -100/100) * 100 %
Rate of change of population = -4%
The population decreased.
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⚠️⚠️ ONLY WITH THE LAST ONE NOT THE FIRST ONE ⚠️⚠️
** the bottom question “Liang is warming..”
Answers
Answer:
they move faster on average
Explanation:
temperature increase means the particles have more kinetic energy so they move faster
what is the difference between eukaryotic and prokaryotic cells? (give 5 differences)
Answers
Answer:
Prokaryotes are always unicellular, while eukaryotes are often multi-celled organisms
eukaryotic cells are more than 100 to 10,000 times larger than prokaryotic cells
eukaryotic cells are more complex than prokaryotic cells
The DNA in eukaryotes is stored within the nucleus, while DNA is stored in the cytoplasm of prokaryotes
A Prokaryotic cell is surrounded by a single membrane layer but In the case of Eukaryotic, there are two surroundings 1. Plasma membrane 2. Nuclear membrane.
Explanation:
solve it according to the question please.
the subject is petroleum, so please solve it regardibg
this.
F- Explain the global carbon-climate cycle during the Cretaceous period. (Write only one paragraph describing what happened during the Cretaceous geological period in order to have good source rocks.)
Answers
During the Cretaceous period, high temperatures and abundant vegetation resulted in increased \(CO_2\) levels, leading to the accumulation of organic matter and the formation of good source rocks for oil and gas.
During the Cretaceous period, spanning from approximately 145 to 66 million years ago, the global carbon-climate cycle played a crucial role in the development of favorable conditions for the formation of good source rocks. The period was characterized by high global temperatures and abundant vegetation, resulting in increased carbon dioxide \((CO_2)\) levels in the atmosphere.
The elevated \(CO_2\) levels fueled vigorous photosynthesis, leading to the accumulation of organic matter in marine and terrestrial ecosystems. As this organic matter was buried and subjected to heat and pressure over millions of years, it transformed into oil and gas, creating potential source rocks. The warm climate and prolific vegetation during the Cretaceous, along with the subsequent geological processes, contributed to the formation of the rich hydrocarbon reserves that are vital to our energy resources today.
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The correct question is:
Explain the global carbon-climate cycle during the Cretaceous period. (Write only one paragraph describing what happened during the Cretaceous geological period in order to have good source rocks.)
If a hermit crab leaves its shell, is the shell biotic?
Answers
Answer:
no
Explanation:
Earth's air is comprised primarily of
Select one:
A. Nitrogen
B. Carbon Dioxide
C. Water Vapor
D. Oxygen
Answers
Identify each of the following as an example of a scientific theory, a model, or a hypothesis. - In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are. This is a - A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer. This is a - Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations. This is a - The flow of blood through a blood vessel is treated as the flow of a liquid through a long, straight pipe. This is a Why is it important for biologists and people in biology-related fields to learn physics? Select all that are correct. To learn how to solve complex problems To learn how to communicate scientific ideas To learn how to apply fundamental principles with logic and reasoning To learn how to plug numbers into equations and calculate answers To learn how to use math in science and make estimates To learn how to interpret and apply different representations of information To learn how to interpret quantitative measurements
Answers
- In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are. This is a model.
- A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer. This is a hypothesis.
- Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations. This is a scientific theory.
- The flow of blood through a blood vessel is treated as the flow of a liquid through a long, straight pipe. This is a model.
It is important for biologists and people in biology-related fields to learn physics because:
- To learn how to solve complex problems
- To learn how to communicate scientific ideas
- To learn how to apply fundamental principles with logic and reasoning
- To learn how to interpret and apply different representations of information
- To learn how to interpret quantitative measurements
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Identify the following situations as a hypothesis, a theory, or a model.
i. In order to determine how muscles work, a biophysicist imagines that certain muscle proteins are tiny springs and measures how "stretchy" they are.
ii. Einstein developed a series of ideas and equations to explain gravity as a curvature in space and time; numerous experiments and observations have given results consistent with his ideas and equations.
iii. A medical doctor sees some improvements in cancer patients when they are given a new drug, so the doctor thinks that the new drug may be helpful to treat cancer.
A) i. - hypothesis; ii. - theory; iii. - model
B) i. - model; ii. - theory; iii. - hypothesis
C) i. - theory; ii. - hypothesis; iii. - model
D) i. - model; ii. - hypothesis; iii. - theory
E) i. - theory; ii. - model; iii. - hypothesis
Create the mRNA strand and the amino acid chain that would be produced during protein synthesis.
AAA-GCT-CCA-TCG-GCT-AGG (DNA)
Answers
To determine the mRNA strand and the resulting amino acid chain during protein synthesis, we need to transcribe the given DNA sequence into mRNA and then translate it into amino acids using the genetic code. These are fundamental steps that both occur during synthesis of protein.
Given the DNA sequence: AAA-GCT-CCA-TCG-GCT-AGG
1. Transcription:
During transcription, DNA is converted into mRNA. We create the complementary mRNA sequence by replacing each DNA base with its corresponding RNA base:
AAA-GCT-CCA-TCG-GCT-AGG (DNA)
UUU-CGA-GGU-AGC-CGA-UCC (mRNA)
2. Translation:
During translation, mRNA is decoded to produce an amino acid chain based on the genetic code. Each set of three mRNA bases, called a codon, corresponds to a specific amino acid. Here's how the mRNA sequence is translated into amino acids using the genetic code:
UUU | CGA | GGU | AGC | CGA | UCC (mRNA)
Phenylalanine-Arginine-Glycine-Serine-Arginine-Serine (we must look at a codon table to interpret what amino acids are corresponding)
Answer:
Therefore, the mRNA strand produced from the given DNA sequence is UUU-CGA-GGU-AGC-CGA-UCC, and the resulting amino acid chain during protein synthesis is Phenylalanine-Arginine-Glycine-Serine-Arginine-Serine.
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Answers
Answer:
I got you just give me a sec
Explanation:
a key observation that charles darwin incorporated into his theory of adaptation by natural selection was that
Answers
A key observation that Charles Darwin incorporated into his theory of adaptation by natural selection was that there is variation within a population and that those individuals with favorable traits are more likely to survive and reproduce.
Charles Darwin's theoryThis observation is a fundamental aspect of Darwin's theory of evolution. He observed that within a population, there are individuals with a wide range of physical and behavioral traits. Some of these traits, such as a longer beak or stronger legs, may give an individual an advantage in terms of survival and reproduction.
Darwin also observed that these favorable traits are passed down from parent to offspring. As a result, over time, the population will gradually change as those individuals with favorable traits become more prevalent. This process is known as natural selection, and it is one of the key mechanisms of evolution.
In summary, Darwin's key observation was that there is variation within a population, and that those individuals with favorable traits are more likely to survive and reproduce, leading to the gradual evolution of the population.
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Which of the following bird structures are especially adapted to support flight? A. cloacas B. gizzards C. bills D. chest muscle
Answers
The bird structure especially adapted to support flight is the bill.
The bill, or beak, of birds is a specialized structure that plays a crucial role in their ability to fly. It is lightweight and aerodynamic, allowing birds to reduce air resistance during flight. The shape and size of the bill can vary among bird species and are often adapted to their specific feeding habits and ecological niches. The bill serves multiple functions related to flight, including obtaining food, manipulating objects, and communicating.
Some bills are long and slender, allowing birds to reach deep into flowers for nectar, while others are stout and strong for cracking seeds or catching prey. The bill is also used for preening feathers, building nests, and defending territories. Other structures mentioned in the options, such as cloacas (reproductive and excretory openings), gizzards (part of the digestive system), and chest muscles (involved in powering the wings), are important for bird physiology but are not specifically adapted for flight.
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26. predict the elect of the loss of forests on cellular respiration in other organisms
Answers
pairs of chromosomes (or 46 chromosomes) in
all somatic or body cells. These cells divide by
mitosis that forms daughter cells with same
number of chromosome pairs as present in
parent cell.
In humans, gametes (eggs and sperms) are
formed from the germ cells by the process of
meiosis that leads to reduction of chromosomes
in daughter cells (with half the number of
chromosomes as present in parent cell).
Thus, the correct options are:
-bone cell has 46 chromosomes, as bone is a
somatic cell.
-Skin cell has 23 chromosome pairs (46
chromosomes), as skin cell is somatic cell.
-gamete has half the chromosomes (23
chromosomes) of a red blood cell (46
chromosomes) as red blood cell is somatic cell.
What happens to red blood cells when placed in a hypotonic solution?
Answers
PLEASE HELP!!!!!
The diagram below shows parts of the rock cycle.
What type of rock does c represent
Igneous rock
Rock formed by cooling
Rock formed by heat and pressure
Sedimentary rock
Answers
The correct answer is-sedimentary rock.
Since the figure shows rock C formed by the accumulation and deposition of sediments this is "Sedimentary rock".
Answer:
Sedimentary Rock
Explanation:
When sediments are compacted, they form a sedimentary rock. Also, the other guy can get brainliest.
Joshi has been experiencing severe headaches and his physician strongly recommends that he enroll in a stress-management class. The physician has probably diagnosed Joshi's headaches as a(n) ________ disorder.
Answers
Joshi has been experiencing severe headaches and the physician has probably diagnosed Joshi's headaches as a psychosomatic disorder.
Psychosomatic diseases are situations in which internal or emotional causes, similar as stress, anxiety, or depression, produce or aggravate physical symptoms. After a comprehensive medical assessment has ruled out any underpinning physical explanations for the symptoms, these ails are constantly linked.
Headaches, weariness, back discomfort, stomach troubles, and difficulty sleeping are all common symptoms of psychosomatic conditions. A range of variables, including stress, anxiety, depression, trauma, and other emotional or cerebral issues, can induce or worsen these symptoms. Psychosomatic diseases are constantly treated with a blend of medical and cerebral curatives. drug to relieve physical symptoms may be used, as well as treatment or comforting to address underpinning cerebral problems.
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