Answer:
True.
Explanation:
The lac operon consists of a coding region, which contains three genes that code for proteins needed to metabolize lactose, and a regulatory region, which regulates transcription of the coding region because The lac operon comprises of a coding region, that is made up of three genes . These genes code for proteins that is needed to metabolize lactose, and a regulatory region, which help to regulate transcription of the coding region.
The three enzymes are lacZ, lacY, and lacA . LacZ is responsible for encodinv an enzyme called β-galactosidase, which help to digest lactose and break it into two constituent sugars: glucose and galactose. lacY is a permease which move lactose into the cell.
Which of the following best describe(s) the function of the 5' mRNA cap?
a) Termination of transcription
b) To provide a binding site for poly(A) polymerase
c) It provides a site for ribosome binding in the cytoplasm
d) To protect the transcript from degradation
Answer:
c) It provides a site for ribosome binding in the cytoplasm
d) To protect the transcript from degradation
Explanation:
Transcription is the very first stage of gene expression, which involves the synthesis of a mRNA molecule from a DNA template. The mRNA transcript produced is referred to as a pre-mRNA until it undergoes further processing in the nucleus. This processing makes it matured and ready to be translated (form protein).
The mRNA processing involves three main processes viz: 5' capping, 3' polyadenylation and splicing. The capping of the 5' of the mRNA involves the addition of a 7-methyl guanosine molecule to the 5' of the mRNA molecule. This capping helps protect the mRNA transcript from being degraded by nucleases (digestive enzymes in the nucleus). In addition to this function, the added CAP also provides a recognition site for ribosome to bind to during translation initiation.
Bacterial infections have become much more of a threat to human health due to which of the following?
A. an increase in acquired antibiotic resistance by innocuous strains
B. horizontal transfer of pathogenicity
C. an increased use of antibiotics, horizontal transfer of pathogenicity, and an increase in acquired antibiotic resistance by innocuous strains the increased use of antibiotics
D. an increased use of antibiotics coupled with an increase in acquired antibiotic resistance by innocuous strains
Answer:
C
Explanation:
Infections caused by bacteria have become much more of a threat to human health due to increased use of antibiotics, horizontal transfer of pathogenicity, and an increase in acquired antibiotic resistance by innocuous strains due to the increased use of antibiotics.
Increased and unregulated use of antibiotics has led to the development of antibiotic resistance by different bacterial strains as a result of evolution by natural selection. The unregulated use of antibiotic act as a selection pressure on the bacterial population. Those that are naturally able to withstand the presence of antibiotics are selected for and the weak individuals gradually fade off from the population, leaving the strong, antibiotic-resistant ones behind.
The potential of bacterial strains to also transfer transposable genetic elements horizontally from one individual to another could make bacteria that are non-virulent before to become virulent.
Correct option: C.
Create a sentence explaining how animo acids from proteins
Amino acids are joined together by peptide bonds, in which the amino or NH2 of one amino acid bonds to the carboxyl (acid) or COOH group of another amino acid to form Proteins.
Amino acids are monomers that combine to form polymers called proteins.
What does absorption mean? A. breakdown of molecules B. enzyme activity on nutrients C. network of chemical reactions that occur in the body D. process of assimilating
Answer:
It is B
Explanation:
Because absorption occurs when the simple nutrient molecules that result from digestion are absorbed into blood or lymph.
Answer:
process of assimilating
Explanation:
I think it is right! I don't know.
What are the two defining characteristics found in organisms that are grouped in the clade Lophotrochozoa
Answer:
A protostome creatures’ clade categorized within the Spiralia is known as Lophotrochozoa. Based on the molecular proof, the taxon was recognized as a monophyletic group. The two illustrating features of lophotrochozoans found in various members are the presence of a small, translucent top-shaped ciliated larvae or trochophores, and the existence of a horseshoe-shaped ciliated tentacles crown known as iophophores.
One of the most crucial factors in the development of fatigue appears to be a depletion of ATP.
a. True
b. False
Answer:
Option A
True
Explanation:
Adenosine triphosphate (ATP) is the molecule in the cells that carry energy. They help to trap the energy that is obtained during respiration and the breaking down of food, in order to release it to the cells of the living organisms when the need arises.
Once the ATP levels deplete in the body, cellular fatigue begins to occur, as the cells do not have the required energy to perform their necessary functions.
This makes the correct option to be A: True. The depletion of the ATP levels in the body causes fatigue
This long muscle lies obliquely across the anterior thigh.It allows you to sit in a crossed-leg (lotus)position.It flexes the leg at the knee and abducts and laterally rotates the thigh at the hip.
A) Hamstrings
B) Quadriceps femoris
C) Sartorius
D) Gastrocnemius
Answer: it's C
Explanation:
The sartorius muscle is the longest muscle in the human body. It is a long, thin, superficial muscle that runs down the length of the thigh in the anterior compartment. The name Sartorius comes from the Latin word sartor, meaning tailor, and it is sometimes called the tailor's muscle.
what tools should a scientist use to measure grams
Explanation:
you can use a scale or a balance
Answer:
Balance/scale
Explanation:
Eye color is an example of (20 Points)
translational control.
gene regulation.
transcriptional control.
gene expression.
eye color is an example of Gene expression
What does it mean for an environment to be isotonic?(1 point)What does it mean for an environment to be isotonic?(1 point) The concentration of solute in the environment is different from the concentration inside the cell. The concentration of solute in the environment is equal to the concentration inside the cell. The concentration of solute is greater in the environment than inside the cell. The concentration of solute is greater inside the cell than in the environment.
Answer:
The correct answer is : The concentration of solute in the environment is equal to the concentration inside the cell.
Explanation:
Isotonic environment is an environment the amount of solute concentration is equal on both side of the semipermeable membrane or the cell. in such condition there would be no water movement towards particular direction or will take place and as there is no water movement so there would be no change in shape or size of the cell. The osmotic pressure in an isotonic environment would be same on both side of the membrane.
Thus, the correct answer is : The concentration of solute in the environment is equal to the concentration inside the cell.
_______ are the small sacs that are the site of gas exchange in the lungs. In addition to being an airway, the _______ is the location of the human vocal cords. Cilia in cells along the trachea and nasal passages secrete _______ which traps dirt and particles from the air. Air is only approximately 21% oxygen. The majority of air is ______. The medulla oblongata controls the contraction and relaxation of the _______, causing the lungs to inflate and deflate during breathing. Explain the process of breathing. Begin with inhalation and describe the route that the air takes to the lungs, and what happens when the air reaches the lungs. Include in your description the terms: mouth, nose, pharynx, larynx, trachea, bronchi, lungs, alveoli, carbon dioxide, oxygen, and capillaries
1. D
2. C
3. B
4. A
5. Alveoli
6. larynx
7. mucus
8. nitrogen
9. diaphragm
10. Air enters the body through the mouth or nose and passes through the pharynx and larynx. Then it travels down the trachea and branches through the bronchi into the two lungs. In the lungs, small alveoli are the site of gas exchange where carbon dioxide diffuses into the lungs for exhalation, while oxygen from the air diffuses into the capillaries surrounding the alveoli to be pumped throughout the body.
PENNFOSTER.
add me as brainliest hehe <3
Answer:
1. d
2. c
3. b
4. a
5. Alveoli
6. larynx
7. mucus
8. nitrogen
9. diaphragm
10. Air enters the body through the mouth or nose and passes through the pharynx and larynx. Then it travels down the trachea and branches through the bronchi into the two lungs. In the lungs, small alveoli are the site of gas exchange where carbon dioxide diffuses into the lungs for exhalation, while oxygen from the air diffuses into the capillaries surrounding the alveoli to be pumped throughout the body.
Explanation:
For a species with four pairs of chromosomes, ________ gametic combinations are possible.Group of answer choices
Answer:
16
Explanation:
For a species with four pairs of chromosomes, 16 gametic combinations are possible.
This is calculated by using the formula 2n
A normal human has two pairs of chromosome which calculated by 2*2=4 to give the possible gametic combinations. However in the case of 4 pairs of chromosomes it is calculated by 2*2*2*2= 16 possible genetic combinations.
Which particles do plants absorb to obtain energy
Answer:The molecules of chlorophyll contained in the chloroplasts absorb energy in the form of light from the sun. Some plants need more sunlight than others, but all need at least a little. Instead of taking in oxygen and breathing out carbon dioxide like animals do, plants take in carbon dioxide from the atmosphere......thank you.have a great day
Which factor in the Southwestern desert ecosystem is abiotic?
"When the body is relying on internal energy reserves to continue meeting its energy demands, it is in the ________ state."
Answer:
Postabsorptive state
Explanation:
This is the state where food has been digested, absorbed, and stored. While in this state, the body relies on the stored glycogen in the body. This state is also known as the "fasting state."
5) The troposphere of the Earth's atmosphere supports life because it contains
A. Water, oxygen, carbon dioxide, other greenhouse gases
B. Water, nitrogen, helium, and argon
C. Water, oxygen, carbon monoxide, methane
D. Water, nitrogen, oxygen, carbon monoxide
Answer:
I think its A
Explanation:
Because the reason why airplane have closed windows is because we can't breathe in carbon dioxide when we go up. Of course there is oxygen just not a lot as we go up. Why would there be helium in the air? We would sound weird when we skydive.
2. What purpose does fat serve in the body?
Explanation:
fat give your body energy and to help cell growth and helps your body warm
Energy receipt is highest between 0° and 23.5° N and S as this is where the sun moves overhead. What would happen if instead the sun moved overhead across a much larger region, such that it was traveling overhead between 0° and 60° N and S? Think about how think might impact certain, major wind patterns.
Answer:
Energy receipt is most noteworthy between the tropics. Had the sun gone up to 60 N and S and back forward, this would have prompted total decimation in significant wind pattern, numerous biomes, for example, Mediterranean biome.
Be that as it may, the most vital effect would have been on the wind patterns since worldwide wind pattern (mainly first order wind) are to a great extent reliant on the weight belt which are constantly influenced by the development of the sun to and fro.
Taking into account that Sun begins its excursion up to 60 N and S, at that point for a day, the Sun would be overhead on this scope. This would imply that during summer solstice (in northern half of the globe), all the weight belts and likewise wind belts would be reached out up to the 60. Thus, the proportionate region under the exchange winds that streams between the equator and the sub-tropical high-pressure belt would increment and the locale under Westerlies effect would additionally build toward the north.
Which of the following is the MOST complex?\
A.Eukaryotic Cell
B.Prokaryotic Cell
C.Ebola
D.Virus
Answer: Hi!
Your answer would be a), eukaryotic cells. We should automatically know that prokaryotic cells are less complex than eukaryotic cells. However, the last two options, Ebola and Virus, are both viruses. Viruses are not considered living and they don't really do anything besides replicate, which they need living cells to do. On the other hand, Eukaryotic cells have organelles, a nucleus, etc. They are definitely classified as living, and complex!
Hope this helps!
The most complex cell is eukaryotic cells. Therefore, option (A) is correct.
What is a eukaryotic cells?Organelles that are membrane-bound and found in eukaryotic cells include the nucleus, mitochondria, and endoplasmic reticulum. Protozoa, fungi, plants, and animals are examples of eukaryotic cell-based organisms. The biological domain Eukaryota is where these species are categorised. Eukaryotic cells are bigger and more sophisticated.
Organelles found in eukaryotic cells conduct a range of tasks inside the cell (described in detail, below). The cytoskeleton, which is also important in relaying signals from one area of the cell to another, stabilises and physically supports each organelle. Microtubules, microfilaments, and intermediate filaments make up the majority of the cytoskeleton in eukaryotic cells. Cytosol is the name given to the liquid that covers every cell organelle.
Learn more about eukaryotic cells, here:
https://brainly.com/question/29512671
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Who were the scientist who discovered the plasmid PB322?
A) Rodriguez & beliver.
B) Joller smith.
C) Herbert boyer.
D) Stanley cohen & joller smith.
Answer:
c) Herbert Boyer
Explanation:
What prevents organisms from reproducing an unlimited number of offspring?
The primary reason living organisms cannot produce an unlimited number of offspring is senescence, otherwise known as old age.
Cells of the reproductive organs divide and continually make it possible for organisms to reproduce. As time goes on, the old cell dies and new cells replace them through mitotic or meiotic cell division of young cells that still has the ability to divide.
However, as programmed cell deaths occur with old age, the reproductive cells start losing the ability to divide, and when this happens, the ability for organisms to reproduce becomes limited.
More on reproduction can be found here: https://brainly.com/question/7464705
What is NOT a function of the endocrine system? Select one: a. Production of white blood cells b. Influencing fluid absorption c. Assisting with sperm production d. Influencing body’s energy level and metabolism
Answer:
Option a. Production of white blood cells
Explanation:
The endocrine system is the system that involves the organs and glands that produce and secretes the hormones that acts on various other activity to regulate responses or activity.
Major function and examples of endocrine system are :
Aldosterone helps in fluid absorption in kidney
Thyroxine helps in regulating body metabolism and energy
Testosterone is responsible for sperm production is regulated
But, WBC formation is not regulated by hormones.
Thus, the correct answer is: option a. Production of white blood cells
what is transpiration
Answer:
Exhalation of water vapor through the stomata.
Answer:
Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flower
The diagram shows a type of lipid.
Which type of lipid is shown?
A.) a saturated phospholipid
B.) a saturated triglyceride
C.) an unsaturated phospholipid
D.)an unsaturated triglyceride
Answer:B
Explanation:
what is the most important responsibility of individual in creating a safe environment especially on public health.
Answer:deacreaing pollution on the behalf of own is the best soon of it...
Explanation:
In the ATP Cycle energy is transferred from sunlight or glucose to build _____ from ADP and _____________.
Answer:
1. ATP
2. Inorganic phosphate (Pi)
Explanation:
Adenosine triphosphate (ATP) is the usable form of energy by the cells of living organisms. During the light reaction of photosynthesis, energy from sunlight (solar energy) is converted to ATP in order to power the Calvin cycle stage. Also during cellular respiration, energy stored in glucose molecule is transferred to ATP.
The processes by which this synthesis of ATP from ADP (Adenosine diphosphate) occurs is called oxidative phosphorylation and chemiosmosis. Energy is stored in the ATP molecule when ADP combines with inorganic phosphate (Pi).
Which examples are ways that models can help scientists solve problems?
Check all that apply.
A model can represent something very large.
A model can represent something very small.
A model can represent something very complex.
A model can represent something that cannot be seen or touched.
A model can represent every aspect of a complex system.
Answer:
ABCD
a model can represent every aspect of a complex system is the only wrong one.
Explanation:
"The beaks of the Galapagos finches that Darwin observed evolved into multiple shapes, and each is adapted for what?"
Answer:
Finch beaks were differentiated according to the different foods that each particular finch fed on.
Each finch developed in different zones and climax of the Galapagos island, that is why they were conditioned by the environment in which they lived, each particular environment made these finches adapt and evolve to be able to fulfill their life and not with extinction of the species.
This speaks of the evolution of species, how it adapted to environmental changes to survive, and how the fittest survive in the face of adversity.
Explanation:
Animals can have genetic modifications, which if they are inherited through generations and are optimal for the species is considered evolutionary processes of the species, beneficial for its survival.
Genetic changes are stimulated by environmental changes, and expressed with phenotypes, that is, with physical characteristics or qualities such as the different morphologies of finch beaks.
Each finch feeds on different sources, that is why those that eat hard insects will have more resistant beaks, those that have to remove the insect from the trees have more pointed beaks, those that grind seeds or fruits from the ground have more robust beaks and in the form of a "hook" for the possible crushing of the husk of the seed.
If you have a density of 100 kg/L, and a mass of 1000 units, tell me the following:
First what are the mass units?
Answer:
100KL
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Answer:
density = mass/volume = 100 kg/L
the mass = 1000 kg
volume = mass/density = 1000/100 = 10 L
hope this helps you
to test a hypothesis, a scientist could...
a- make observations
b- perform experiments
c- look to the scientific literature to find data
d- all of the above
Answer:
see below
Explanation:
without doubt it is D
Answer:
may be right ans is d
Explanation:
all of above I think because to text hypothesis,a scientist could do all above