questions.
is a special type of cell division necessary for sexual reproduction.
Answers
Answer:Meiosis
Explanation:
Related Questions
Analyze the diagram below:
According to the model represented in the diagram, which of the following would cause the cell to not express the lacZ, lacY, and lacA sequences?
Binding the RNA polymerase to the gene
Preventing the repressor from binding to the lac operon
Removing the inducer
Transcribing the lacl sequence
Answers
Answer:
Transcribing the lacl sequence
Explanation:
lacZ, lacY, and lacA sequences are the structural genes, which needs to be expressed in order to produce their proteinous enzymes required for the breaking down of lactose sugar. The transcription of these three genes must occur with the aid of RNA polymerase binding to them.
However, a gene sequence called lacI encodes information for an repressor, which when expressed can inhibit the expression of the genes lacZ, lacY, and lacA. Hence, the TRANSCRIPTION OF THE LACL SEQUENCE cause the cell to not express the lacZ, lacY, and lacA sequences.
Answer: removing the inducer
Explanation: all sequences need an inducer present in order for them to be expressed
If a DNA strand has 32 % guanine, what percent thymine does it contain?
A) 36%
B)18%
C)64%
D)32%
Answers
Answer:
B
Explanation:
Guanine and Cytosine pair together. So, if 32 percent is guanine, then 32 percent should also be cytosine. This is a total of 64 percent. The remaining 36 percent is split between thymine and adenine. So, Thymine will have half of 36 percent which is 18 percent.
This is for my biology class. It is for the osmosis potato lab (Google it if you don't know what it is) and I have to answer this question. I also have to include the words at the bottom. This is really confusing and I would be so happy if someone could please help me with this!
How can a scientist use this lab to determine the amount of solute in an Idaho potato?
Use the following vocabulary words in your final conclusion statement below:
Hypertonic, hypotonic, isotonic, dynamic equilibrium, solute, solvent, osmosis
Answers
Explanation:
A scientist can use this experiment to determine the amount of solute in any potato.
hypotonic solution is a relative term. it means when we compare two solutions one of them is considered to be a hypotonic if it's solute concentration is less than the other.
so if the solution has less solute concentration its hypotonic solution and if it has more amount of solute its hypotonic solution. if both solutions have same amount of solute then it will be considered as a isotonic solution. when we separate two solution hypertonic and hypotonic by a semipermeable membrane there occurs diffusion of water molecules from its higher concentration to its lower concentration that is from hypotonic solution to hypertonic solution.
this movement of water molecules is called osmosis. this occurs in order to obtain an dynamic equilibrium between the 2 solutions.
here we take start as solute and water as solvent.
thus when a scientist and potato in a hypotonic solution the water moves inside the potato cavity. the more the transfer of water molecules in the potato cavity the more in the sugar quantity present in the potato. this is because the water will try to obtain a dynamic equilibrium between the two solutions if the sugar quantity in the potato cavity is high then the water molecules needed to dilute that solution will also be high.
in in this way a scientist can determine the amount of salt present in the potato.
Cells that do not contain a nucleus are known as what?
Answers
Answer:
prokaryotes
Explanation:
A vacuole is the cell's _______________.
A: control center
B: storage place
C: energy processor
Answers
Answer: B- storage place
Explanation:
What is the correct answer?
Answers
Answer:
Friction
Explanation:
There u go
Explain what the title of this article and video, "The Albatross, Harbinger of Human Migrations" means. In what ways should humans and their governments act like the scientists working with albatrosses
Answers
Answer:
Albatross are the indicators for migration of humans.
Explanation:
The Albatross, Harbinger of Human Migrations" means that Albatross are the indicators for migration of humans from that location. Humans and their governments act like the scientists working with albatrosses by making environment suitable for them. The humans have to reduce interventions in the places where they are present in order to increase occur in their population. governments should made policy for them to secure their habitat and prevent them from extension.
What’s the answer to this??
Answers
Answer:
3
Explanation:
Sickle cell anemia is a genetic disorder in which the hemoglobin responsible for transporting oxygen is misformed. The disease begins with a mutation in a _______________ acid, which results in a structural difference in a–
Protein; nucleic acid.
Nucleic acid; lipid.
Nucleic acid; protein.
Protein; lipid.
Answers
Answer: protein , nuclei acid
Explanation:
Which statement describes why natural populations cannons keep growing exponentially ?
A. Disease always affects large populations
B. Humans always disturb ecosystems
C. Resources are always limited
D. Natural disasters always control growth
Answers
Answer:
C resources are always limited
Explanation:
What animals do not have a gallbladder? What type of digestive system do they have?
Answers
Answer:
Horses, Deers, Rats all don't have gallbladers
Different species of animals are better able to digest certain types of feeds than others. This difference occurs because of the various types of digestive systems found in animals.
The area labeled X is known as
A.
an atomic nucleus
B.
an active site
C.
a pH indicator
D.
a temperature regulator
ecule
Answers
An active site is the area at where the enzyme gets attached. The are labelled X is known as an active site.The correct answer is option B.
What is an atomic nucleus ?An atomic nucleus is the central region of the atom at which the number of protons and neutrons are in abundance. The charge carried by the nucleus is positive in nature.
The picture shows the lock and key method where it is the relation between enzyme and substrate where the enzyme and substrate are almost same in shape where the lock is the substrate where the enzyme is of key shaped and they both fit in.
An active site is the region of the reactant or substrate where the enzyme will bind in and the reaction will form a product. The binding of both the constituents depend on the binding energy and activation energy of the reaction.
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List the inputs and
outputs of photosynthesis.
What part(s) of the plant
are responsible for taking
in each of the inputs?
Answers
Answer:
Photosynthesis Inputs. 6H2O, 6CO2, (light) energy.
Photosynthesis Outputs. C6H12O6 (glucose), 6O2.
Light Reactions Inputs. Light (energy), ADP, Pi, NADP, H2O.
Light Reactions Outputs. O2, ATP, NADPH.
Calvin Cycle Inputs. CO2, ATP, NADPH.
Calvin Cycle Outputs. G3P.
Explanation:
From which type of cells did multicellular organisms arise?
Answers
Answer:
Unicellular eukaryotes
Explanation:
What does evaporation change from ? Solid ———> liquid Liquid ———-> Solid What does condensation change from Liquid——-> solid Solid———> liquid
Answers
Answer:
Evaporation : Liquid --- Gas (Vapor) ; Condensation : Gas (Vapor) --- Liquid
Explanation:
Evaporation is the change of a liquid into gas or vapor, usually by increase in temperature. Eg : Water evaporation into vapors during water cycle, due to sun heat.
Condensation is the change of gas or vapor into liquid, usually by decrease in temperature. Eg : Vapors condensation into water droplets during water cycle, due to lower atmospheric temperature at higher height.
PLEASE HELP I WILL GIVE YOU MULTIPLE BRAINLYS ON DIFFRENT POSTS!!!!!!!
Answers
Explanation:
hy i can help you but what we have to do in that pdf
edicted answer - oh! i got that
I saw from the comments
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ANSWER THIS NOW PLS
Ground tissue includes and is responsible for ALL of the following, EXCEPT one of these
A) Transport of water
B) Site of photosynthesis in the leaf
C) Metabolism, storage, support
Answers
What is the lowest level of organization
A) nerve cell
B) brain tissue
C) brain(organ)
D) organism
Answers
Answer: The lowest level of organization is A.) Nerve Cell aka. Cell because it's just cell.
The lowest level of organization - A) nerve cell
Cellsare the most basic unit of life at the smallest level of organization.cells are joined together to form a structure called is tissue as nerve cells are cells that form together to make brain tissue.Tissues form organ and organ ultimately form an organ system of an organismvarious organ systems form an organism togetherThus, The lowest level of organization - A) nerve cell
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Mike works as a nurse in a hospital he accidentally gave a patient a hypotonic solution. such as distilled water instead of an isotonic solution suck as saline
what changes will occur in the patients cells ?
what can be done to fix this problem ?
Answers
Answer:
The patient's cells will swell and then burst. The solute concentration outside the cell is lower than inside the cell, so water will move into the cells.
Mike would have to give the patient a hypertonic solution, which will cause water to move out of the cell and the cell to shrink followed by an isotonic solution, which should regulate the concentration inside and outside the cell.
Hope that helps.
PLLZZ I NEED HELP DUE SOON!!!!
What type of molecule forms the antibodies found in the human immune system?
Answers
Answer:
An antibody
Explanation:
What is the difference between the euphotic zone and the bathyal zone of the ocean
Answers
Answer:
Euphotic zone is the layer closer to the surface that receives enough light for photosynthesis to occur. Beneath lies the disphotic zone, which is illuminated but so poorly that rates of respiration exceed those of photosynthesis.
Bathyal zone is the part of the pelagic zone that extends from a depth of 1000 to 4000 metres below the ocean surface. It lies between the mesopelagic above, and the abyssopelagic below.It is ala known as midnight zone.
Explanation:
What is the best science fair project bio in high school than
Answers
Answer:interactive model of any normal project
Explanation:
Which is one of the contributions that supported the development of the Clean Water Act?
Answers
Answer:
E) detailing the number of countries affected by contaminated water around the world
Explanation:
what is a tentative explanation?
Answers
So a possible explanation of any matter on whuch you are working will be called astentative explanation which may be correct or incorrect
would the smell of perfume make it across the room faster if it were colder or hotter in the room ?
Answers
Answer:
hotter
Explanation:
Answer:
hotter
Explanation:
Calculate the momentum for the following football player: Todd: mass = 80 kg, velocity = 1.7 m/s
Answers
Answer:4.9
Explanation:80+1.7=4.9
Please answer ASAP!! Will give BRAINLIEST to Right ASNWER
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What is the difference between extrusive and intrusive igneous rock?
Intrusive igneous rock forms below ground and extrusive igneous rock forms above ground.
Intrusive igneous rock forms above ground and extrusive igneous rock forms below ground.
Intrusive igneous rocks form when sediments are compacted together and extrusive igneous rocks form when sediments separate.
There is no difference, they both form above ground.
Answers
Answer: I'm pretty sure it's the first one
Explanation: I don't know for sure but I'm pretty sure when I learned it they said that extrusive is above ground and intrusive is below ground. Don't take my word for 100% though
Suppose the great, green galoofus lizard has 28 chromosomes in the nucleus of its unfertilized eggs. Predict how many chromosomes will be in the skin cells of a great, green galoofus lizard?
Answers
Answer: 56
Explanation:
Because an unfertilized egg has half the chromosomes of a fertilized egg. The fertilized egg then splits, and continues splitting until the lizard is born. Always remember, whenever a question talking about an unfertilized egg, it has half the chromosomes of a fertilized egg. One more side note, it doesn’t matter what body part you talk about. A skin cell will have the same number, and identical chromosomes compared to a heart cell. (So long as it’s the same organism, if it isn’t, but part of the same species, it will have the same number of chromosomes, but it may have a unique set of chromosomes). If you want me to go into detail, I can, just respond to this answer.
Write the importance of medicinal plants in human life.
Answers
Answer:
The importance of medicinal plants in human are as follow:
Medicinal plants are considered as a rich resource of ingredients.It is used in drug development either pharmacopeial and none pharmacopeial or synthetic drug.It has it's origin in ancient culture .Using medicinal plant doesn't have any side effects.Answer:
hope it'shelps you have a great day keep smiling be happy stay safe ☺Which of the following would not be expected to contain tissues?
A. Harvester ant
B. African elephant
C. Unicellular bacteria
D. Oak tree
btw i picked C. Unicellular bacteriawhat
Answers
Unicellular bacteria does not contain tissue. Thus option C is correct.
What are the types of epithelial tissue in human ?A tissue is a cluster of similar cells that perform specific function.
Epithelial tissue one most important type of tissue.
It can be up two types such as Simple epithelium and Stratified epithelium.
Simple epithelium is a single layer of identical cells, observed at sites of secretion, absorption of substances.
It can be up three types Squamous epithelium, Cuboidal epithelium, Columnar epithelium.
Simple Squamous epithelium is single layer of flattened cells found Lungs-alveoli, Blood vessels-endothelium.
Simple cuboidal epithelium found in tubules of nephrons and glands which is involved secretion, absorption, and excretion, etc.
Simple columnar epithelium found in the inner layers of the stomach, intestine, trachea,
Stratified epithelium which is multiple layers epithelial tissue can be up 4 types squamous, cuboidal, columnar, Psuedo-stratified columnar epithelium.
Thus option C is correct.
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