Both prokaryotic and eukaryotic cells use ________ to turn certain genes on or off.
Group of answer choices
RNA polymerase
enhancers
activators
Both prokaryotic and eukaryotic cells use RNA polymerase to turn certain genes on or off. The correct option is A.
What is RNA polymerase?RNA polymerase, or more specifically DNA-directed/dependent RNA polymerase, is a molecular biology enzyme that synthesizes RNA from a DNA template.
The RNA polymerase enzyme is a large complex composed of many subunits. The prokaryotic RNA polymerase has four subunits that can transcribing all types of RNA.
These enzymes in eukaryotes have eight or more subunits that aid in the attachment and processing of DNA during transcription.
RNA polymerase (abbreviated RNAP or RNApol), or more specifically DNA-directed/dependent RNA polymerase (DdRP), is a molecular biology enzyme that synthesizes RNA from a DNA template.
RNA polymerase is used by both prokaryotic and eukaryotic cells to turn genes on and off.
Thus, the correct option is A.
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In mammoths, assume that spotted skin (S) is dominant over non-spotted skin (s) and that wooly hair (W) is dominant over non-wooly hair (w). Cross a mating between a heterozygous spotted, non-wooly mammoth with a heterozygous wooly-haired, non-spotted mammoth. Give genotypic and phenotypic ratios of offspring.
Answer:
Genotypic and Phenotypic ratios → 1:1:1:1
25% of the progeny is expected to be SsWw, exhibiting spotted skin and wooly hair, SsWw25% of the progeny is expected to be Ssww, exhibiting spotted skin and non-wooly hair, Ssww25% of the progeny is expected to be ssWw, exhibiting non- spotted skin and wooly hair, ssWw25% of the progeny is expected to be ssww, exhibiting non-spotted skin and non-wooly hair, sswwExplanation:
Available data:
spotted skin (S) is dominant over non-spotted skin (s)wooly hair (W) is dominant over non-wooly hair (w)Cross: heterozygous spotted, non-wooly mammoth with a heterozygous wooly-haired, non-spotted mammoth.Parentals) Ssww x ssWw
Gametes) Sw, Sw, sw, sw
sW, sW, sw, sw
Punnett square) Sw Sw sw sw
sW SsWw SsWw ssWw ssWw
sW SsWw SsWw ssWw ssWw
sw Ssww Ssww ssww ssww
sw Ssww Ssww ssww ssww
F1) 4/16 = 1/4 = 25% of the progeny is expected to be SsWw, exhibiting spotted skin and wooly hair
4/16 = 1/4 = 25% of the progeny is expected to be Ssww, exhibiting spotted skin and non-wooly hair
4/16 = 1/4 = 25% of the progeny is expected to be ssWw, exhibiting non- spotted skin and wooly hair
4/16 = 1/4 = 25% of the progeny is expected to be ssww, exhibiting non-spotted skin and non-wooly hair.
Genotypic and Phenotypic ratios → 1:1:1:1
Which consequence is a direct result of human population growth
Answer:
One of the largest environmental effects of human population growth is the problem of Global warming.
Economic development, urbanization, energy consumption, transportation/motorization due to rapid population growth are major driving forces of air pollution in large cities.
In order to support the growing population, forests are being destroyed at an alarming rate. Deforestation occurs when humans clear forests to use the land either for agriculture or for habitation. This leads to soil erosion and the extinction of plant species. Land animals also decline in numbers and even face extinction due to human expansion that encroaches on their natural habitat and limits their ability to spread geographically.
Humans also continue to put a great demand on the natural resources of our planet. Many non-renewable resources are being depleted due to the unrestrained use of fuel and energy. Many parts of the world also suffer from a shortage of food and water.
The growth of the population puts larger demands on our already limited resources. The environment on earth is suffering from the growth of the global population. The depletion of resources and biodiversity, the production of waste, and the destroying of natural habitat are serious problems.
Explanation:
sorry it is so long but here u go plz leave a like and a rating and brainliest
The direct result of human population growth include consequences such
as pollution.
Increase in human population has led to an increase in industries and
use of automobiles which emits different gases which are harmful. They
deplete the ozone layer and cause global warming with incidences of
sunburns while others cause respiratory diseases such as asthma etc.
it has also resulted in overcrowding and reduced fresh oxygen due the
structures for different purposes.
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PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer:
D
Explanation:
All the other answers dont really make as much sense. So D is best answer.
:)
Winds blowing in opposite directions form a cylinder that might get tipped up by a supercell’s ________.
A. gravitational pull
B. eye
C. updraft
D. fog
Plz Help!!! God Bless You
Winds blowing in opposite directions form a cylinder that might get tipped up by a supercell’s updraft.
What do you mean by updraft?Updrafts are found when a wind blowing at a hill or mountain has to rise to climb over the hill. Updrafts can also be caused by the sun heating the ground. The heat from the ground warms the surrounding air, which causes the air to rise. The rising pockets of hot air are called thermals.
The definition of an updraft is a strong upward current of air. When a big gust wind comes along and catches on the umbrella on your outside table from underneath, knocking your umbrella and table over with its power, this big gust of wind is an example of an updraft.
When warm, moist air moves upward in an updraft, puffy cumulus clouds may form in the atmosphere. The moisture in the air condenses into water droplets as it rises. The cloud will continue to grow as long as warm air from below continues to rise.
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what stage in an animals life cycle follows the fertilization of an egg? adolescent baby embryo or infant
Answer:
Embryo
Explanation:
Fertilization of an egg forms an embryo.
In a microclimate, the conditions of the small area are______?
A. the same as in the larger surrounding area
B. microclimates do not exist
C. much different than in the larger surrounding area
D. always hotter than in the larger surrounding area
the answer should be option A
Which statement describes the best evidence that two species share a recent common ancestor?
A) The species are about the same size.
B) The species eat the same type of food.
C) The species live in the same ecosystem.
D) The species have similar DNA sequences.
Answer:
I hope this helps you :)
Explanation:
Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.
The statement that describes the best evidence that two species share a recent common ancestor is that the species have similar DNA sequences, which is present in Option D, as the DNA is the genetic material.
What role does the DNA sequence play in evolution?DNA sequence comparisons have become an increasingly important tool in determining evolutionary relationships between organisms, and after comparing the DNA sequences of different organisms, scientists can determine the degree of similarity between them such as similarities in size, diet, or ecosystem may indicate some degree of similarity between two species, but they do not necessarily provide evidence for a recent common ancestor.
Hence, the statement that describes the best evidence that two species share a recent common ancestor is that the species have similar DNA sequences, which is present in Option D.
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The average adult (like Hank) is _________% water, ________% protein, _______% fat, _______% minerals, and _______% carbohydrates. 2. All the macromolecules that make you up come from ______________________________. 3. __________________________ reactions destroy the reactants that you give them, making big, complex substances smaller and __________________________ reactions reassemble the smaller products into new, bigger products. The processes behind these two sets of reactions make up your
Answer: 64% water, 14% protein, 16% fat, 4% minerals 1% carbohydrates
Explanation:
It’s what he says in the video
1. 64% water, 14% protein, 16% fat, 4% minerals and 1% carbohydrates
2. Macromolecules come from Food
3. Catabolic, Anabolic, and Metabolism
What do you mean by metabolism?Metabolism is the set of life-sustaining chemical reactions in organisms. The three main purposes of metabolism are: the conversion of the energy in food to energy available to run cellular processes.
Moreover, it is the process by which the body changes food and drink into energy. During this process, calories in food and drinks mix with oxygen to make the energy the body needs. Even at rest, a body needs energy for all it does.
Hence, if your metabolism is "high" (or fast), you will burn more calories at rest and during activity. A high metabolism means you'll need to take in more calories to maintain your weight. That's one reason why some people can eat more than others without gaining weight.
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briefly describe an enzyme molecule
Answer:
Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. ... The molecules that an enzyme works with are called substrates. The substrates bind to a region on the enzyme called the active site.
please help and dont say it randomly. only answer if u actually know not just to be funny
Answer:
cannot see question
Explanation:
we cannot see the question but the light moth population is dropping which means they are in a dark forest if that helps
which health issue is associated with exposure to indoor air pollution
Answer:
irritation of the eyes,nose and throat;headaches,dizziness,fatigue;respiratory diseases,heart disease,and cancer.
Explanation:
(hope this helps)
Answer:dddddddddddddddddddddddddddddd
Explanation:
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
The greatest amount of energy is released by the...
1: Can The environment determines all physical features on plants?
2: Can The environment can affect physical features on plants?
No links!!!
Answer: When said that he was the one
Explanation: the first sentence is the nice loot
A guiding question instead of a hypothesis is most likely used in which of the following?
A. Scientific investigation
B. Laboratory experiment
C. Laboratory test
D. Repeated trials
Read the statement
An elephant is walking on the hot African plains in search of food. As it does so, its body temperature increases. As it walks, it comes across a small pond.
What should this elephant do to BEST maintain homeostasis?
Select one:
A. It should jump into the pond to cool off.
B. It should use its trunk to take a drink.
C. It should flap its ears to create a breeze.
D.It should move at a slower pace to conserve energy.
Thanks for helping me!
Answer:
I think it would be "B".
Explanation:
if the elephant is by a pond it would most likely drink the water to stay cool.
4 Which factor determines whether an energy resource is renewable or nonrenewable
energy? 6.ESS3.1
A whether or not the resource can be sold to people for money
B. the types of energy conversions involved in forming the resource
C. the amount of pollution produced from obtaining and using the resource
D. the ratio of the rate at which it is used to the rate at which it is replenished
Answer:
D the ratio of the rate at which it is used ....
Given the following diagram, what product is produced at Location A?
Limestone
Oxygen
Water
what is ovary in plants?
Explanation:
Ovary, in botany, enlarged basal portion of the pistil, the female organ of a flower.
The ovary contains ovules, which develop into seeds upon fertilization.
The ovary itself will mature into a fruit, either dry or fleshy, enclosing the seeds.
Answer:
The ovary is the enlarged basal portion of the pistil, the female organ of a flower.
The ovary contains ovules, which develop into seeds upon fertilization. The ovary itself will mature into a fruit, either dry or fleshy, enclosing the seeds.
Explanation:
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
D
Explanation:
Since algae is the start or the foundation of the food chain, this would mean that animals that eat the algae will be more commonly found here. And where their are consumers, predators are to follow.
Hope this helps :)
Answer:
D
Explanation:
PLEASE ANSWER ASAP WILL MARK BRAINLIEST!!!
Carbon monoxide has
___ of oxygen.
a.) one atom
b.) zero atoms
Answer:
One atom.
Explanation:
One carbon dioxide molecule contains one carbon atom.
Explain the merits of alternative strategies of waste management.
Coniferous trees flourish because they take the opposite approach of deciduous trees: they grow (slow/fast) and die (young/old). Question 4 options: fast, young slow, young slow, old fast, old
Answer:
D. Coniferous and Deciduous trees
Explanation:
These trees are found in the humid subtropical climate areas.
Correct on edg. 2020
Coniferous trees grow slow and die old as compared to Deciduous trees.
What do you mean by Coniferous trees?Coniferous trees may be defined as mostly evergreen trees and shrubs having usually needle-shaped or scalelike leaves and including forms with true cones and others with an arillate fruit.
Deciduous trees tend to grow faster than evergreen trees. They have broader leaves as compared to evergreen trees. Coniferous trees have needles instead of leaves. They don't change color in the fall.
Therefore, Coniferous trees grow slow and die old as compared to Deciduous trees.
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An example of chemical digestion is the breakdown of
into
Select one:
O a. fatty acids; cholesterol
O b. polysaccharides; amino acids
c. amino acids; proteins
d. proteins; nucleotides
nucleic acids; nucleotides
e.
Answer:
B
Explanation:
An example of chemical digestion is the breakdown of nucleic acids, or nucleotides, which is in option e. Chemical digestion involves the breakdown of large, complex molecules into smaller ones, so here the correct option is option e.
Chemical digestion is a process that occurs in the digestive system, specifically in the stomach and small intestine, where complex macromolecules are broken down into smaller, simpler units through chemical reactions facilitated by digestive enzymes. Proteins are large macromolecules made up of chains of amino acids. Hence, here the correct option is option e.
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All of the following have been accomplished by space programs except-
A. placing semi-permanent structures in earth’s orbit
B. landing spacecraft on planets other than our own
C. sending spacecraft into orbit that allow us to study the universe in greater detail
D. develop technology and resources capable of sending the general population into space on a regular basis
Answer:
B
landing spacecraft on planets other than our own
All cells contain the molecule DNA. Which best explains why DNA is important to all cells?
A) All cells need DNA to process sugars.
B) All cells need DNA to carry information.
C) All cells need DNA to reproduce asexually.
D) All cells need DNA to perform photosynthesis.
Help me! Thanks 15 points. URGENT
Answer:
DDddddddddddddddddddddd
Matter constantly cycles through the earth's spheres using many different processes. Photosynthesis and cellular respiration are
two important processes in this cycling of matter. The products of photosynthesis are reactants in cellular respiration. The
products of cellular respiration are the reactants of photosynthesis. This model shows the cycling of matter through these cycles.
The model is unlabeled. Correctly label the products and reactants of cellular respiration. Choose ALL that apply.
A)
A = ATP
B)
B = CO2 + H20
C
A = C6H1206
D)
D = 02 + C6H1206
E)
B = 02 + C6H1206
Answer:
A) A = ATP
B) B = CO2 + H2O
D) D = O2 + C6H12O6
Explanation:
The process of photosynthesis and cellular respiration mutually depends on one another. In this diagram, A represents ATP, B represents C[tex]O_2[/tex] + [tex]H_2O[/tex], C represents sunlight, and D represents [tex]C_6H_1_2O_6 + O_2[/tex].
What do you mean by Photosynthesis?Photosynthesis may be defined as a process through which plants synthesize their own food with the help of carbon dioxide and water in the presence of sunlight.
Mitochondria release energy in form of ATP, while carbon dioxide and water serve as the reactant for photosynthesis. In presence of sunlight, they convert into glucose and oxygen which is the product of photosynthesis.
Both photosynthesis and cellular respiration mediate the cycling of matter like oxygen, glucose, carbon dioxide, etc.
Therefore, it is well described above.
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What is the benefit of an arthropod’s exoskeleton.
Question 5 options:
A. It allows arthropods to breathe.
B. It protects and supports the arthropod’s body.
C. It allows the arthropod to get food.
D. It allows the arthropod to see far distances.
Answer:
B
Explanation:
Beyond support, the exoskeleton provides protection against predators and strength against prey. And it protects arthropods from the environment, for example, keeping ocean-dwellers from being affected by small changes in saltiness and preventing land-dwellers from drying out.
How are organisms different from one another?
Answer:
They inherit it from their parents or it is due to them living in a different environment.
Explanation:
