Answer:
Cell growth and development include its repair. As cells grow old, they wear off. Sometimes they suffer injury and bruises, but they are able to repair themselves by growing new cells in a process called Mitosis. As living things grow, they undergo a process called aging (age
Explanation:
Answer. The cell cycle is the replication and reproduction of cells, whether in eukaryotes or prokaryotes. It is important to organisms in different ways, but overall it allows them to survive. ... Plants require the cell cycle to grow and provide life for every other organism on earth
so it should be 1&2 only
46. A sample of human DNA is made up of approximately 30% adenine. Based on
this information, and the base pairing rules, approximately how much cytosine
found in human DNA?
A 70%
B 20%
C 30%
D 10%
Help please
Answer:
its A/F
Explanation:
A sample of human DNA is made up of approximately 30% adenine. The quantity of cytosine found in human DNA will be 20%. The correct option is B.
What is DNA base pairing?DNA base pairing is the pairing or joining of DNA bases to each other with hydrogen bonds. There are four types of bases present in DNA. They are adenine, thymine, cytosine, and guanine.
Adenine pairs with thymine with double hydrogen bonds and cytosine joined with guanine with triple bonds of hydrogen. The pairing between these base pairs is alternated in the sequence of DNA.
According to the base pairing rule. There will be 100% of these bases present together. So if there is 30% adenine, there will be 30% thymine. The total becomes 60%. Now remain is 40%. So there will be 20 % cytosine and 20% guanine.
Thus, the correct option is B 20%.
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17. What are some of the major causes of extinction today?
Which of these is NOT a disease caused by bacteria?
A. Stayhyococcus aureus
B. streptococcus pneumonia
C. Hemophilus Influenzae
D. Penicillium erythromycin
Answer:
A
Explanation:
Scientists have concluded that Tiktaalik lived when deciduous trees began appearing on land, an event that occurred hundreds of millions of years ago. Which radiometric probe (Carbon-14, Iodine-129, Uranium-238) would you choose to determine a more accurate age of the Tiktaalik fossil? Explain your reasoning.
PLEASE HELP ME ILL GIVE 25 POINTS
Answer:
Carbon
Explanation:
Carbon leaves a bigger footprint when investigating fossils or skeletons scientists use carbon samples.
The Carbon-14 radiometric probe should be used to determine a more accurate age of the Tiktaalik fossil. Radiometric dating is the technique used to calculate the age of fossils.
What is radiometric dating?Radiometric dating or radioactive dating is a technique which is used to date the materials such as rocks or carbon, in which trace amounts of radioactive impurities were selectively incorporated when they were formed in the fossil such as trees.
Radiometric dating is used to calculate the age in years for a geologic material by measuring the presence of a short-life radioactive element in the fossil. For examples, carbon-14, or a long-life radioactive element plus its decay product which is potassium-14 or argon-40.
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Describe how ATP synthase produces ATP.
Answer:
so it spins the hydrogen molecules to make the ATP
Explanation:
it occurs in the inner membrane of the mitochondria. The electrons drop off the energy and the hydrogen atoms are moving through the Protein channels/pumps. after that the NADH turns into nad+ and the fadh2 turns into fad. these then go back to the citric acid cycle to get the electrons back. (known as electron carriers) the hydrogen molecules get pumped up to the inner membrane space which would be active transport since we are going from low to high concentrations. the hydrogen molecules go down the atp synthase which spins to make the atp. this would be passive transport since its moving from high to low concentrations.
Where is starch stored in the chloroplast?
Answer:
Stroma
Explanation:
Starch is stored in the stroma of chloroplast and in the cytoplasm of leaves.
Explain the effect of activity on a heart rate
Answer: Exercise causes the heart to pump blood into the circulation more efficiently as a result of more forceful and efficient myocardial contractions, increased perfusion of tissues and organs with blood, and increased oxygen delivery. Aerobic exercise trains the heart to become more efficient.
Explanation:
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Answer:
Pretty much the more activity you do, or the more intense it is, the faster your heartrate will be. Your heart needs blood, and when you're exercising the blood is pumping through your body faster.
Explanation:
If you say that a ground squirrel has greater evolutionary fitness than another ground squirrel in the same population, you mean that the animal
Answer:
Has more offspring that have the ability to survive and reproduce themselves.
Explanation:
Evolution fitness can be defined as a characteristic or quality possessed by living organisms and determines their adaptability, as well as level of success in terms of reproduction i.e giving birth to offsprings.
Hence, if you say that a ground squirrel has greater evolutionary fitness than another ground squirrel in the same population, you mean that the animal has more offspring that have the ability to survive and reproduce themselves.
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Which of the following are representative organisms?
a. Sponges
b. Cnidarians
c. Roundworms
d. Annelids
e. Mollusks
f. Arthropods
g. Echinoderms
h. Vertebrates
Answer:
Roundworms
most sensible
Help with 2.) 3.) and 4.)
Why did Mendel study pea plants?
They reproduce asexually and have one trait that is easy to observe.
They reproduce asexually and have many traits that are easy to observe.
They reproduce sexually and have one trait that is easy to observe.
They reproduce sexually and have many traits that are easy to observe.
Answer:
For Gregor Mendel, pea plants were fundamental in allowing him to understand the means by which traits are inherited between parent and offspring. He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.
Explanation:
Gregor Mendel chose the pea plants for his experiments because the garden pea is an ideal subject in the study of genetics for the following reasons: The presence of observable traits with contrasting forms. It produces many offspring in one cross. Short life cycle.
Why did Mendel choose pea plants to study?Solution: Pea plants were chosen for Mendel's experiments because they are easy to grow, have a short life period, and produce larger flowers. Pea plants are also self-pollinated.
What was the purpose of the pea plant study?Gregor Mendel describes his experiments with peas showing that heredity is transmitted in discrete units. From the earliest time, people noticed the resemblance between parents and offspring, among animals and plants as well as in human families. Gregor Johann Mendel turned the study of heredity into a science.
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Which of the following best explains why DNA fingerprints can be used to identify an individual, such as from a crime scene sample?
Group of answer choices
DNA is inherited from both maternal and paternal parents
DNA from 2 different species can be combined using restriction enzymes
DNA is used to make proteins during protein synthesis
Each individual has a unique DNA sequence, with the exception of identical twins
Answer:
4.
Explanation:
Everyone's DNA is unique unless they are identical twins or if you have some kind of transplant.
Of the following best explains why DNA fingerprints can be used to identify an individual, such as from a crime scene sample it is the situation that Each individual has a unique DNA sequence, with the exception of identical twins. The correct answer is option 4.
What are identical twins ?These are the babies that are formed from multiple fusion of gametes and resulting into double fertilization.
DNA is inherited from both maternal and paternal parents. Yes, it is so but the pattern is not same as it will be possible to get the idea of the pattern and analyse along with the prediction of the genome as only few % is predicted.
DNA is used to make proteins during protein synthesis and this situation is clearly correct too but the fact is that this is not helping in the case of DNA fingerprinting where it is not easy to firstly see the DNA pattern then the RNA and then the amino acids and then the proteins.
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Investigate four substances containing nitrogen or phosphorous that are related to biological processes, and explain their respective roles in those processes. (Examples: DNA, RNA, amino acids, and enzymes).
Answer:
Well, you already have the answer, but I can try to elaborate XD
So, DNA: contains genetic information that is necessary for biological functioning and reproduction.
More specifically, it contains the genetic instructions through gene encoding that instructs the cell what to do. A specialized complex ribosome interacts with the DNA molecules and "reads" it, changing the genes from the DNA into proteins that the cell as a whole can function upon. It is also crucial to forming a whole cell in offspring, since only the genes from the two parents combined (in humans at least) can produce an offspring with all genes intact. Those who do not have genetic disorders, a famous one being Down Syndrome.
Next, RNA: a molecule necessary for expressing genes and making proteins.
Connecting to the paragraph above for DNA, RNA also assists in the process by reading the ribosome that reads the DNA itself. Complicated, I know. All you have to know, however, is that the RNA, in this case called mRNA since it serves as a messenger, hence, the "m", reads the codons produced by the ribosome when it reads the DNA, and makes proteins according to those codons, and those proteins then scatter all across the cell to execute instructions.
Now, we move onto nitrogen and phosphorous: both are found in amino acids, the building blocks of proteins.
That is actually partially wrong. Amino acids do not contain phosphorous, but do contain nitrogen. Not exactly sure what went wrong on your end there, but nitrogen is a basic building block for amino acids, which are basic building blocks themselves for proteins. To be more clear, amino acids are made of carbon, hydrogen, oxygen and nitrogen atoms. No phosphorus there!
Finally, enzymes: special proteins that accelerate chemical reactions in cells.
This is correct. Enzymes typically lower the activation energy required for reactions to happen. More specifically, enzymes make the reaction molecules more active, hence, lowering the threshold for the amount of energy you have to put in before the molecules start crashing into each other hard enough to have a chemical reaction. Of course, enzymes do not participate in the reaction itself, which makes them incredibly useful for spurring on chemical reactions since they can be used multiple times.
Explanation:
Hope this helped!
QUESTION: this for the other version.. " Investigate substances containing carbon or oxygen that relate to biological processes. Explain their main function in those processes. "
ANSWER: I chose to investigate four substances: carbon dioxide, ethanol, glucose, and cellulose. According to my research, these are the main functions of these substances in various biological processes:
Carbon dioxide: Carbon dioxide is a product of aerobic respiration. Most living organisms exhale carbon dioxide while plants inhale it in the respiratory process. Carbon dioxide is converted to organic matter in the process of photosynthesis carried out by autotrophs.
Ethanol: The process of fermentation gives rise to ethanol, which is an alcohol. Ethanol is formed through a type of anaerobic respiration, that is, respiration without the use of oxygen.
Glucose: Glucose is a form of carbohydrate. It is nothing but simple sugar that stores energy in plants and animals.
Cellulose: Cellulose is an organic polymer used to make cell walls in plants.
EXPLANTATION: EDMENTUM / PLATO
2) Compare and contrast the structure of the nucleotide that makes up DNA and the nucleotide that makes up RNA.
HELP PLEASE!!!!! How much time does a cell spend in Mitosis for all of the phases:
Interphase:
Prophase:
Metaphase:
Anaphase:
Telophase:
Cytokinesis:
Answer:
Interphase : 1000.2 minute
prophase : 180 minutes
metaphase : 128.2 minute
Anaphase : 77.8 minute
telophase : 51.8 minute
What is it called when leaves release excess water
it is known as transpiration
What is the relationship between Earths orbit around the sun and the force of gravity.
Answer:
Explanation:
the relationship is that if the sun stopped spinning, the earth would fly off into space and so the earth needs the suns gravity to keep us alive ^^
Answer:
the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
Explanation:
All of the following are examples of Ilmiting factors in an ecosystem except:
A.) Water
B.) Food
C.) Population density
D.) Space
Answer:
C-Population Density
Explanation:
Which of the following organisms in the soil food chain does not obtain energy directly from plants?
a. bacteria
b. fungi
C. protozoa
d. nematodes
Answer:
C
Explanation:
Protozoa have been classified into three trophic categories: the photoautotrophs which harness the sun's radiant energy in the process of photosynthesis; the photoheterotrophs, which although phototrophic in energy requirements, are unable to use carbon dioxide for cell synthesis and must have organic carbon compounds
Protozoa in the soil food chain does not obtain energy directly from plants. So, the correct option is C.
Who are Protozoa?Protozoa is defined as a group of single-celled eukaryotes, which is either free-living or parasitic, that feed on other microorganisms or on organic matter such as organic tissues and debris.
Protozoa are classified into two trophic categories:
Photoautotrophs that harness the Sun's radiant energy in the process of photosynthesisPhotoheterotrophs which although phototrophic in energy requirements, are unable to use carbon dioxide for cell synthesis and must be organic carbon compounds.Thus, Protozoa in the soil food chain does not obtain energy directly from plants. So, the correct option is C.
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What is ONE major difference in the problems associated with obtaining measurements on the sizes or densities of animal populations versus plant populations?
I think one major difference with that is that animals can move around, go distances in search for food or mate, and thus make the animal densities per geography vary greatly. Birds migrate regularly, so their population densities tend to vary with seasons. Their mobility also depends on the availability of food, so animals go away if there are no food in the area.
Plants on the other hand don't move around faster (they can migrate by reproduction: it's their seeds moving around). Thus their densities tend to be more constant per season/life cycle.
What are the reactants of photosynthesis?
Answer: sunlight, carbon dioxide and water from soil to make glucose
Explanation:
Happens in the chloroplast
Answer:
CORRECT (SELECTED)
Carbon dioxide and water
Explanation:
In photosynthesis, carbon dioxide and water react, along with light energy, to form glucose and oxygen.
Which of the following is true regarding lipids? *
1 point
Answer:
there are no answers, you can put them in the comments
Explanation:
which of the following is FALSE?
a. sex-linked traits can affect females, but it’s rare when it happens
b. autosomal disorders aren’t sexist: they affect males and females just the same
c. sex-linked disorders happen because x and y chromosomes are not homologous
d. autosomal disorders affect all chromosome pairs
e. sex-linked disorders can be inherited in the x chromosome of both mom and dad
Answer:
option C is incorrect
Explanation:
Because sex chromosomes don’t always come in homologous pairs, the genes they carry show unique, distinctive patterns of inheritance.
Ribosomes are the site where
are produced.
Amino acids are coded for by triplet bases in RNA called
Answer:
Ribosomes are where PROTEINS are produced.
Amino acids are coded for by triplet bases in RNA called A CODON.
Explanation:
Answer:
proteins
codons
Explanation:
Edge
Identify the Mitotic phases.
Answer:
1 prophase, 2 metaphase, 3 anaphase, and 4 telophase.
Explanation:
Answer:
1= prophase
2= metaphase
3= anaphase
4= telophase
Explanation:
(because yes) hope this helps!
is snail invertebrates animal
Answer:
slugs and snails are invertebrates animal
Answer:
invertebrates is snail.
HELP PLEASE!!
Celeste found this article in a neighborhood newsletter.
Hey, Kiddos! Come and join the gang at our Spring Fling next Saturday, March 20. Meet at the North Pavilion at 11:30 a.m. for games, prizes, and a tug-of-war. There’ll be hot dogs and root beer floats! Don't forget sunscreen and a lawn chair.
The intended audience for this article is
A. young children in the neighborhood. The writer's style is informal, and the purpose is to persuade kids to come to a party.
B. parents in the neighborhood. The writer's style is informal, and the purpose is to educate adults about a community party.
C. young children in the neighborhood. The writer's style is formal, and the purpose is to educate children about community traditions.
D. parents in the neighborhood. The writer's style is formal, and the purpose is to entertain readers with funny stories of a neighborhood event.
Answer:
a
Explanation:
it clear and short enough for kids
a single strand of DNA helix has the code CGCTAA. which would be the complementary code on the other strand of helix
Answer:
The other side would be GCGATT
Explanation:
Adenine (A), cytosine (C), guanine (G), or thymine (T).
A (adenine) always pairs with T (thymine)
C ( cytosine) always pairs with G (guanine)
Hope this helps.
Sorry if it doesn't.
What is the smallest part of an element that has the same properties of that element?
Answer:
an atom
Explanation:
An atom is the smallest particle of an element that has the properties of that element.
PLZ HELP ITS MY LAST QUESTION I WILL MARK BRAINLIEST!!!!
Which of the following is true regarding enzymes?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Enzymes can only be used once during a reaction.
(Choice B)
B
Enzymes are reusable.
(Choice C)
C
Enzymes are usually carbohydrates.
(Choice D)
D
Enzymes denature at their optimum temperatures.
Answer:
C. Enzymes are reusable.
Explanation: