Answer: The correct answer to the question is option WHEN GLUCOSE LEVELS ARE LOW AND LACTOSE IS PRESENT.
Explanation: To start with,Lac operon can be simply defined as a part of the DNA that is under the part of the DNA is manipulated and controlled by the same promoter,they can be found in some prokaryotic cells giving room for regulation over excess synthesis of protein.so simply put,these specific segment of the DNA binds with the segment of the polymerase of RNA so that transcription of the mRNA from the operon genes will be achieved.
Lac operon is also known as lactose operon, it is seen in some enteric bacteria like e.coli where they play a crucial role in coding of genes for those proteins that function in moving lactose into the cystocel and digesting it to form glucose that is used for energy generation. These lac operon are are most active when glucose levels are low and lactose is present,with the low level of glucose, the lac operon can be transcribed to a high level,this is to ascertain that the bacteria only gets to activate the lac operon and can only make use of it,that is using lactose when all the preferred energy source from glucose has been exhausted.
Answer:
c.
Explanation:
How would you study ecological succession in different ecosystems?
Answer:
Ecological succession in different ecosystems can be studied by first of all recognizing the various ecosystems and what makes them unique. Thereafter, sample collection methods and regimen must be established with standardized experiments for establishing diversity of organisms in the ecosystem. Regular data storage and interpretation is needed to know what goes on in the ecosystem and at what time.
Explanation:
To study ecological succession in a fermented food sample, for example, palm-wine, methods such as metagenomics can be used to determine the diversity of organisms at various points from the tapping stage through various hours of alcoholic fermentation. This will reveal the initial colonizers of the sample and what happens to them as the pH of the palm-wine changes. Eventually, only organisms that can tolerate high acidity will thrive as the fermentation proceeds.
Pleaseeeeee helpppp?!!!!
Identify Structure A
A-chloroplast
B-stroma
C-granum
D-thylakoid
Identify Structure B
A-chloroplast
B-stroma
C-granum
D-thylakoid
Identify Structure C
A-chloroplast
B-stroma
C-granum
D-thylakoid
Identify Structure D
A-chloroplast
B-stroma
C-granum
D-thylakoid
Answer: A
Explanation:
The following structures labelled in the given diagram are:
A- Chloroplast
B- Stroma
C- Granum
D- thylakoid
What is a chloroplast?A chloroplast is a type of membrane-bound organelle known as a plastid that conducts photosynthesis predominantly in plant and algal cells.
Chloroplasts provide energy through photosynthesis and oxygen-release mechanisms, which support plant growth and crop yield. As such, chloroplasts are responsible for the manufacture of active substances such as amino acids, phytohormones, nucleotides, vitamins, lipids, and secondary metabolites
Chloroplasts are oval-shaped and have two membranes: an outer membrane and an inner membrane. Between the outer and inner membrane is the intermembrane gap roughly 10-20 nm wide. The space within the inner membrane is the stroma, the dense fluid within the chloroplast.
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Describe the structure of saturated fatty acids! WILL MARK BRAINLIEST!!
Answer: A fatty acid in which the hydrocarbon molecules have a hydrogen atom every carbon and thus are fully hydrogenated. Byway of comparison the hydrocarbon molecules of unsaturated fats have two carbons that share double or triple bonds and are therefore not completely saturated with hydrogen atoms.
Which of the following describes surface tension in water?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Surface tension occurs due to ionic bonding.
(Choice B)
B
Surface tension is caused by water molecules repelling one another.
(Choice C)
C
Surface tension allows water to support small objects if they are placed carefully on its surface.
(Choice D)
D
Surface tension of water is weakened by hydrogen bonding.
Answer:
C
Explanation:
Small objects usually do not permeate the surface of the water due to its high tension. The covalent bonding of water allows for its unique ability of high surface tension.
The process of ______________ occurs in the _____________and forms RNA while the process of ____________ occurs in the _________________ and forms protein.
Answer:
1. Transcription, Nucleus
2. Translation, Ribosome (Cytoplasm)
Explanation:
All living organisms contains genetic material in their nucleus (for eukaryotes), usually in the form of DNA. The DNA stores the information that encodes the synthesis of useful products (proteins). However, the encoded information needs to be expressed, which is done in two major stages namely: transcription and translation.
Transcription is the first process of gene expression which occurs in the NUCLEUS of eukaryotic cells, since the DNA is located there. Transcription involves the synthesis of a RNA molecule from a DNA template i.e. the information in the DNA is used to produce a RNA.
Translation is the second process of gene expression. In eukaryotes, the RNA transcript moves out the nucleus into the cytoplasm of the cell, where organnelles called RIBOSOME attach to it. In the ribosome, the RNA is used to synthesize amino acid sequence, which eventually becomes a PROTEIN. Hence, the information contained in the RNA molecule is translated into a protein molecule.
How do substances like CO2 and water move in and out of the cell?
(Please Answer) :)
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There are three processes you need to know of:
Diffusion, Osmosis and Active Transport.
Liquids (such as water) move via osmosis.
Osmosis is literally the movement of particles across a partially permeable membrane from an area of high conc to an area of low conc.
CO2 would move via either diffusion or active transport.
Diffusion is the movement of particles across the concentration gradient (i.e from high conc to low conc)
Active transport is the movement of particles against the conc gradient (i.e from low conc to high conc)
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Answer:
CO2 moves by diffusion and H2O move by osmosis through cell membrane .Predict the most likely effect of a two-nucleotide deletion in the middle of the intron located between exons 4 and 5 on the structure of protein A. Justify your prediction.
Will mark brainliest!
Answer:
The question is incomplete; however, it is important to note that the deletion of two nucleotides in an intron generally doesn't have effect on gene function, thereby they are generally neutral.
Explanation:
Introns are gene regions that were historically considered as junk DNA because they do not encode for proteins, and therefore they were thought to have no biological function. However, in the last years, it has been discovered that introns are gene regions that encode non-coding RNA (ncRNAs), which are involved in gene regulation.
The front legs of a cat and the arms of a human share a bone structure that suggests a common evolutionary lineage. Therefore, these skeletal structures are
Answer:
homologous
Explanation:
Since the front legs of a cat and the arms of a human share a bone structure that suggests a common lineage, these structures are said to be homologous.
Homologous organs are organs that share some similarities in different organisms but whose function differ in these organisms.
The organs are structurally similar but functionally different. Homologous organs represent one of the evidences scientists use to support evolution.
The front legs of cats and the arms of humans are functionally different, even though their structure is based on the same five digit plan.
In terms of generating portable electricity which is better a primary cell or a secondary cell? Explain
Answer:
Primary batteries hold more energy than the secondary batteries per size and per weight.
Explanation:
Operational readiness, long storage, and also instant readiness are other benefits. The primary batteries contain little toxic substances and they are considered to be environmentally friendly.
The Seven Sisters, seven stars located more than 400 light-years away in the Taurus constellation can be seen here with Venus and another constellation, Orion. The seven stars stay grouped together but seem to move, like the planet Venus. Why do stars seem to move like planets in the night sky?
A)Both the stars and the planets are orbiting around the Earth.
B)The night sky rotates around the planets in our solar system.
C)They seem to move because they are so far away and we cannot see exactly what happens.
D)Stars seem to move because Earth is rotating on its axis; planets do move around the Sun.
Answer:
D)
Explanation:
The main reason as to why stars seem to move like planets in the night sky is because of our Earth. The Earth is rotating on it's axis as well as revolving around the sun at the same time. Therefore turning once around us every 24 hours, which to us makes it seem as though the starts are moving like the rest of our planets do around the sun.
Answer:
The correct answer is D
Explanation:
Just like the starts other astronomical bodies such as the Sun, Moon, and planets look like they are moving from one point in the sky to another.
The simple explanation for this is because because of the the Earth is rotating on its axis. One can achieve same effect by trying to trun round standing at a point. It would appear that the environment is shifting however we are actually the ones doing so.
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Light strikes the photoreceptors first, then send information through the bipolar neurons to the ganglion cells.
a) true
b) false
Answer:
true
Explanation:
What are greenhouse gases
and how do they contribute
to global warming?
Answer:
they contribute to global warming because the greenhouse gases affect the ozone layer making it having holes which allow more sunlight to reach Earth surface which results to global warming
Explanation:
they contribute to global warming because the greenhouse gases affect the ozone layer making it having holes which allow more sunlight to reach Earth surface which results to global warming
Answer:
"Greenhouse effect" is the warming of the climate that results when the atmosphere traps heat radiation from Earth towards space. Certain gases in the atmosphere resemble glass in a greenhouse, allowing sunlight to pass into the "greenhouse," but block Earth's heat from escaping into space. These gases that contribute to the greenhouse effect include water vapor, carbon dioxide (CO2), methane, nitrous oxides, and chlorofluorocarbons (CFCs). Carbon dioxide is responsible for 53% of the of global warming. It is the result of processes of the use of products such as fuel deforestation and production of cement and other materials. Its permanence in the atmosphere varies, but it’s very high at all times since 80% lasts for 200 years and the other 20% can take up to 30,000 years to disappear. Methane is the next of the greenhouse gases which has the biggest effect on global warming with 15%. This is produced by activities such as livestock production, agriculture, sewage treatment, natural gas and oil distribution., coal mining, fuel use and is also given off from waste tips, and lasts an average of 12 years in the atmosphere.
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Sorry, I would type more and give a better answer but I'm lazy and my brain works even worse at 12 am
These two squirrels live in the same ecosystem. What type of interaction do the images represent?
Indirect competition (I had this question)
Explanation:
Since both squirrels live in the same ecosystem and are competing for the same food, there is competition between the organisms. This competition is indirect because the organisms are not directly fighting over the food.
Indirect competition is a type of interaction that is shown by these two squirrels live in the same ecosystem.
What is ecosystem?In ecology, an ecosystem comprises a unit of structure and function where living things interact with one another and their surroundings. An ecosystem, then, is a series of interactions between species and their surroundings.
The arrangement of abiotic as well as biotic components defines the framework of an ecosystem. This covers how energy is distributed in our surroundings. It also takes into account the climate that prevails in that specific setting. Indirect competition is a type of interaction that is shown by these two squirrels live in the same ecosystem.
Therefore, indirect competition is a type of interaction that is shown by these two squirrels live in the same ecosystem.
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What macromolecule is produced during translation?
O A. Carbohydrate
O B. RNA
O C. Protein
O D. DNA
Protein
It’s on ape x
Which is true for both photosynthesis and cellular respiration? A. They require oxygen as a reactant. B. They require organelles. C. They require light energy from the Sun. D. They require cells to use water.
Answer:
B
Explanation:
Photosynthesis and cellular respiration are opposite processes, so a reactant of one would be the product of the other and vice versa. This means that A, C, and D are false because they don't apply to both processes. B is true because photosynthesis requires chloroplasts and cellular respiration requires mitochondria to occur.
What do aerobic respiration and anaerobic respiration have in common? Check all the characteristics below that describe ATP
Both begin with glycolysis.
Answer:
Both begin with glycolysis.
which one means chromosomes that everyone has, regardless of sex. The first 22 chromosomes
Answers
- Autosomes
-Sex Chromosomes
-Analogous Chromosomes
Answer:
Autosomes is tge correct one Explanation:
Type the correct answer in the box. Spell all words correctly. What is the source of continuous heat and energy that we receive from the Sun? The ____ chain reaction is the source of continuous heat and energy that we receive from the Sun.
Answer:
Nuclear fusion
Explanation:
Nuclear fusion powers our sun as nuceli fuse together and this reaction is exothermic (until some point), releasing energy which is light and heat.
Which scenario breaks the law of segregation?
Answer:
The answer is c a gamete has two of the same alleles after meiosis 2
Explanation:
A
DY
P
P:)
That is this molecule called?
Answer:
I am not quite sure about the question
why are metamorphic rocks denser then igneous rocks
Answer:
Metamorphic rocks are denser than igneous rocks, because of the way they are formed. To explain:
Metamorphic rocks are formed when all types of rocks are compressed under high temperature and pressure. Having been compressed under high pressure, they become denser.
Igneous rocks, however are formed when magma freezes. It could just freeze when it reaches a slightly colder area and is not affected by the pressure at all. Or if it was, it wouldn't be igneous anymore.
Hope this helps
Which molecule produces the most ATP?
Answer:
ATP is offered to as the 'molecular unit of currency ' of intracellular energy transfer . When consumed in metabolic processes , it converts either to adenosine diphosphate (ADP) or Adenosine monophosphate (AMP)
What do you mean by endocytosis ? Answer me in ur own words
Answer:
Endocytosis means taking things in, or absorbing things. The prefix endo- helps me remember that.
Examples are pinocytosis and phagocytosis, which is where a cell envelops a food particle or a drink particle in its cell membrane and takes it into the cytoplasm to be digested and consumed.
The equator rubs through which continents
Answer:
It passes through the mainland of Africa and South America, and through offshore islands of Asia.
Answer:
Africa and south america
Explanation:
Hope this helps!
Which statement is true of viruses?
Viruses do not consist of cells, but they have cell membranes, cytoplasm, ribosomes, and other cell organelles.
Viruses do not consist of cells; they lack cell membranes, but do have cytoplasm, ribosomes, and other cell organelles.
Viruses do not consist of cells; they also lack cell membranes, cytoplasm, ribosomes, and other cell organelles.
Viruses are cells with cell membranes, cytoplasm, ribosomes, and other cell organelles.
Answer:hello
I think the third one is right
Explanation:
Identify the levels of the biosphere from smallest to largest (most inclusive), left to right.
community-population-individual-ecosystem
Individual- population-community-ecosystem
individual-population-community-dingo
ecosystem-community-population-individual (It's not D)
Answer:
individual - population- community- ecosystem
Explanation:
several individuals join to form population. community is organisms in a given unit area
and ecosystem is the living and non living organisms interacting each other in a given specific area
What are Elements,Compound and Mixture.
Answer:I hope this helps
Elements are substances that are made from one type of atom. An element cannot be broken down into any other substance. ... A mixture is made by simply mixing together elements and compounds. No new chemical bonds are formed.
Explanation:
which part of your body to transfer information?
Answer:
The nervous system. The nerves send signals and information to your brain.
Answer:
The nervous system
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Scientists must be able to repeat an experiment and get very similar results; otherwise their conclusions will be questioned. If the
results of a repeated experiment are different from the original results, the results of the experiment
Answer: are flawed
Explanation:
Why do we get itch’s
Answer: Wool, chemicals, soaps and other substances can irritate the skin and cause itching. Sometimes the substance, such as poison ivy, parasites or cosmetics, causes an allergic reaction. Also, reactions to certain drugs, such as narcotic pain medications (opioids) can cause itchy skin.
Explanation:
Answer:
To protect your skin.
Explanation:
The itch sensation is technically known as pruritus, and it's thought to have evolved as a way to protect skin - our largest organ - from parasites and build-up of dead cells.
