Answer:
Cilia and flagella are the two structures cells use of their movement and locomotion.
Cilia and flagella are projections from the cell. They are made up of microtubules.
They are motile and designed either to move the cell itself or to move substances over or around the cell.
life in desert biomes tend to be limited by
Answer:
Low amounts of water
Explanation:
Deserts mean areas with low amounts of water and animals are not able to survive without water therefore not having water is a limiting factor
(Limiting factors can also be said as limited by)
Which of these does not determine an ecosystem's carrying capacity for a population?
A. Water
B. Migration
C. Food
D. Space
Answer:
migration
Explanation:
Which of the following represents a duplication in the DNA sequence A-G-T-C-T? 1. T-C-A-G-A 2. A-G-G-T-C-T 3. A-G-T-C-T 4. G-A-C-T-T )Helppp
Structure of a Water molecule
Answer:
A water molecule consists of two hydrogen atoms and one oxygen atom. ... This molecular structure leads to hydrogen bonding, which is a stabilized structure in which a hydrogen atom is in a line between the oxygen atom on its own molecule and the oxygen on another molecule.
Explanation:
Does epinephrine trigger a direct or indirect signal transduction pathway? How do you know?
Epinephrine triggers a direct signal transduction pathway.
I know this because when epinephrine binds to it's receptor example on a muscle cell,this is known as a type of G protein -coupled receptor,signal transduction cascade is triggered and this involves the production of a second messenger molecule cyclic AMP(cAMP).
Epinephrine also know as Adrenaline or sus-phrine.
It is a vasoconstrictor,broncho dilator and a sympathetic stimulant.
It constricts the peripheral abdominal organs as well as a stimulating the heart beat thereby raising the blood pressure,it also relaxes the spasms of the bronchial muscles thereby promoting ventilation of the lungs.
Please help!!!!! I only have 5 minutes!!!!!!!!!
Answer:
c i believe
Explanation:
Answer:
Cell X is the plant cell
Reason
Cell X is the only cell that has a nucleus, chloroplast, cell membrane cytoplasm and cell wall.
but all the other cells one or the other of the above (as all the given organnells has to be present in a planet cell
Permits in the cap and dividend policy are issued for _______ production. a. carbon dioxide b. timber c. water pollution d. plastic
Answer:
the answer is A.. I think
Permits in the cap and dividend policy are issued for carbon dioxide production. Therefore, option (A) is correct.
What is The cap and dividend policy?The cap and dividend policy is one potential approach to lowering carbon emissions and slowing the progression of climate change. The way it works is by first establishing a limit on the total amount of carbon emissions that are permissible within a given time period, and then handing out permits to businesses in proportion to the amount of emissions that they are responsible for producing.
If a company emits fewer greenhouse gases than their allotted amount, they have the option of selling their unused permits to businesses that have a demand for more. This results in the creation of a revenue stream that can be distributed to individuals in the form of a dividend, as well as a financial incentive for businesses to reduce the amount of carbon emissions they produce.
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Select all of the following that describe RNA.
Check all that apply.
nucleotides contain the sugar deoxyribose
always occurs as a double-stranded helix
can be single-stranded
can catalyze chemical reactions
the nitrogenous base thymine is used instead of guanine
the nitrogenous base uracil is used instead of thymine
nucleotides contain the sugar ribose
The statements that describe RNA are ;
Nucleotides contain the sugar ribose ( 7 )Can be single stranded ( 3 )The nitrogenous base uracil is used instead of thymine ( 6 )RNA and DNA are similar in some ways because they are both nucleic acids but the characteristics of RNA that makes it different from DNA is that RNA is mostly single stranded with it Nucleotides containing ribose instead of deoxyribose.
The RNA ( Ribonucleic acid ) nucleotides are composed of certain bases i.e. adenine, guanine, and cytosine also it contains uracil in place of thymine.
Hence we can conclude that the statements that describe RNA are ; Nucleotides contain the sugar ribose, Can be single stranded, The nitrogenous base uracil is used instead of thymine.
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Genes A and B are neutral. A weakly beneficial mutation arises in the population. This mutation is 100 base pairs away from Gene A and 1000 base pairs away from Gene B. If this mutation were to go to fixation within the population, which gene would be more likely to go to fixation and what is the term for this process? Is there any reason to suspect that one or both of these genes may not go to fixation? Why or why not?
Answer:
Both genes would be likely to go to fixationThe term for this process is "linked genes"The reason to suspect that both of these genes may not go to fixation is that they are too close to the mutation and the recombination frequency between them is very very low.Explanation:
Independent assortment law establishes that the alleles from two or more different genes distribute in gametes independently from each other. In other words, a gamete receives an allele from a gene that does not depend nor influence the allele of another gene in the same gamete. This can only be applied to independent genes. These genes segregate independently after crossing-over because they are located far away from each other.
Some other genes, however, are too close to each other and they do not segregate independently. These are the linked genes that do not exhibit an independent distribution, and they inherit together more frequently.
Crossing-over between linked genes that are very close to each other in the chromosome is not that common. Crossing-over during meiosis occurs randomly in different positions all along the chromosome, and its occurrence frequency in the area between two genes depends on the distance between them. A short distance between genes is a very little target for crossing-over to occur, which means that only a few of them will happen, compared with the number of events between genes that are more separated between each other.
Two genes that are very close will have a few recombination events and are strongly bounded.
The more separated two genes are, the more chances of recombination there will be. The closer they are, the fewer chances of recombination there will be.
Genes that express 50% of recombination frequency or more are not linked genes.
To analyze the recombination frequency, we have to know that
1% of recombination = 1 map unit = 1centi Morgan = 1,000,000 base pairs.
And that the maximum recombination frequency is always 50%.
The map unit is the distance between the pair of genes for which every 100 meiotic products one of them results in a recombinant one.
In the exposed example we know that the distance of gene A from the mutation is 100 base pairs, and the distance of gene B from the mutation is 1000 base pairs.
1,000,000 base pairs ------------------ 1% recombination frequency
1000 base pairs -----------------------X = 0.001% recombination frequency
100 base pairs ------------------------ X = 0.0001% recombination frequency
According to the recombination frequency between the mutation and gene A, and between the mutation and gene B, we can assume that both genes are linked to the mutation, as they seem to be too close to it. They are so close, that their recombination frequency is very little.
What do bacteria need to live and reproduce?
A. Food
B. Water
C. Nutrients
D. All of the above
Answer:
D is obviously the right answer.
Answer:
D
Explanation:
In which biome would you find the highest biodiversity?
A)
grassland
B)
tundra
C)
savanna
D)
deciduous forest
E)
rainforest
Question 1
The heat from a lamp allows a lizard to remain warm. This is an
example of which type of heat transfer?
Cold Blood
Conduction
Radiation
Convection
Answer:
Answer is radiation
Explanation:
Took the test!
Outermost solid layer of earth A:crust. B:mantle. C:outer core. D;inner core
Answer: crust
Explanation: The crust is the most outer layer sold layer of planet Earth. We live on the crust of the Earth. Therefore, crust is the answer.
Hope this helps!
Choose the following true statement:
a)When cells are finished with their tasks, they work, they die, and are replaced by new cells
b)Once a cell is made, the body will not regenerate new ones.
c)There are limited amount of cells the body can produce
d)All cells will continuously multiply forever.
Answer:
D
Explanation:
because. when one cell dies another is replaced so it gos on forever and ever
Temperature versus Photosynthesis Temperature in Celsius degrees Photosynthetic Rate 0 20 10 40 20 100 25 150 30 200 35 125 40 0 What is the independent variable based on the data shown? A) temperature B) plant growth C) rate of photosynthesis D) cannot determine based on information given
Answer:
A) Temperature
Explanation:
Independent variable in an experiment is the variable that the experimenter changes or manipulates in order to bring about a measurable response.
In this question given, the data is portraying the Temperature versus Photosynthetic rate. This means that the experimenter is testing to see the effect of varying temperatures on the photosynthetic rate. Hence, the TEMPERATURE is the independent variable because it is the variable being changed.
what fruit or seed adaptations might plants have for seed dispersal using biotic vectors such as bird or small mammals?
Answer:
Wind dispersal, Water dispersal, Animal dispersal
Help me plzzz thanks I’ll mark brainliest
Answer:
b
Explanation:
abiotic factors
Answer:
B
Explanation:
A student places a healthy potted plant and a plastic straw in a closet for two weeks. After two weeks, the student observes that the plant is wilted and brown, while the plastic straw remains the same.
The student classifies the plant as living and the plastic straw as nonliving,
What criteria does the student use to classify the plant as living rather than nonliving?
The plant needs energy from sunlight to make food for survival.
The plant produces pollen for reproduction of its species.
The plant generates sugars that are consumed as food by other organisms.
The plant produces offspring with characteristics similar to the parent plant
Answer:
According to the experiment, the criteria used by the student to classify the plant as living rather than non-living is that plant needs energy from sunlight to make food for survival.
Explanation:
One of the characteristics that defines plants as living is their ability to perform functions proper to living beings, such as nutrition, growth, development and reproduction.
Plants are autotrophic organisms, capable of producing their own nutrients from sunlight, so they require this type of energy for their nutrition and survival.
The fact that the plant that remained in the closet for 2 weeks turned brown and wither demonstrates the need it has for sunlight, which is a valid criteria for considering it a living being, in comparison with the non-living object.
The other options are characteristics of plants as living beings, but they are not the criterion that demonstrates that plants are living beings, in accordance with the proposed scenario.
Why does the amount of energy available change as you move from one
trophic level to the next? Does this process still follow the Law of
Conservation of Energy? Explain your reasoning.
Answer:
hope it helps you
Explanation:
Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. Trophic level transfer efficiency (TLTE) measures the amount of energy that is transferred between trophic levels.
what kinds of organisms are considered consumers?
If the sequence of an mRNA moving through the ribosome has the sequence 5'AUGCCAGCGGAUCGC3', what is the sequence of the polypeptide produced from translating this segment
Answer:
MPADR (methionine-proline-alanine-aspartic acid-arginine)
Explanation:
Translation is the mechanism for which a protein is synthesized from the information encoded in the messenger RNA (mRNA). The mRNA is a single-stranded molecule that consists of a chain of nucleotides, where three-letter combinations of nucleotides 'or codons' specify the order of the corresponding amino acids in the polypeptide chain. The ribosome reads the mRNA by one codon at a time and thus translates this information into a polypeptide, where each codon is specific for one amino acid. In this code, the start codon is AUG (which is read as Methionine), while stop codons can be UAG, UAA, and UGA.
Which best describes the relationship between genetic variation and adaptation?
Answer:
Genetics are something that everyone (or only you) have. And adaptation is getting something from someone. Or Adapting to that.
Explanation:
Which word is a synonym for Heterotroph?
Group of answer choices
A)Consumer
B)Monster
C)Bacteria
D)Producer
Color blindness is a recessive X-linked trait. A normal couple has a color-blind child. At least one member of the couple's families is colorblind, who is this most likely to be?a) the child's paternal grandmotherb) the child's paternal grandmother or grandfatherc) the child's maternal grandmotherd) the child's paternal grandfathere) the child's maternal grandfather
Answer:
c or e
Explanation:
The correct answer would be the child's maternal grandmother or grandfather.
For X-linked traits, only females can be carriers while males are either affected or totally free from the trait. This is because females have two X (XX) chromosomes while males have only one (XY).
Since the couple is normal, it means the father is free from color blindness. The only available option now is the mother and since she is phenotypically normal, it means that she is a carrier of the disease. She must have inherited the allele from either of her parents, but not from both. If she had inherited an affected X chromosome from each of her parents, she would have been phenotypically affected for color blindness.
Hence, the child's color-blind allele can only be traced back to either of the child's maternal grandmother or grandfather.
The correct option is c or e.
The member of the couple's family who is this most likely to be colorblind is the child's maternal grandfather.
An X-linked recessive inherited genetic trait is transmitted from parent to child through mutations in genes localized on the X chromosome.In males, X-linked recessive traits are always expressed because males contain only one X chromosome.In consequence, in this case, the mother should be a normal carrier of the disease/condition, thereby her dominant X-linked allele can mask the expression of the recessive (daltonic) allele, which is passed to the child from the maternal grandfather.In conclusion, the member of the couple's family who is this most likely to be colorblind is the child's maternal grandfather.
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What are the seven 7 levels of
classification?
Answer:
from largest to smallest the 7 levels of classification are: Kingdom, Phylum, Class, Order, Family, Genus, Species
Explanation:
^
In ecology, an ecosystem is similar to
a community. However, an
ecosystem differs in that it
includes...
How does the control group setup in an experimental differ from the other setups in the same experiment?
Answer:
A control group setup in an experiment is used to see if there are other variables in play during the experiment. Say I was to test which type of blood is a shark's favorite, my control would be putting red paint in one of the set ups to see if the shark is just interested in the red color of blood, instead of the other types of blood.
Explanation:
Answer:
The control group does not receive the independent variable during the experiment.
Explanation:
The group that will receive the independent variable during the experiment is the experimental group. The dependent variable is what you will measure as a result. The control group is not receiving the independent variable during the group, as it is what you're measuring the experimental group to.
Plato's allegory of the cave indicates that
majority opinion is almost always correct.
truths about reality are not always obvious.
when we seek the truth, we must always trust our senses.
imagination is a more reliable guide than objective reality?
Answer:
truths about reality are not always obvious.
Explanation:
Plato's allegory of the cave was proposed by the Greek philosopher called Plato. This was used to emphasize the importance of education and the effect caused by a lack of it.
Plato's allegory of the cave indicates that truths about reality are not always obvious. This implies that no matter how real something seems to be it is always ideal to ask questions about it which is useful in problem solving.
Which is a type of star system?
dim stars
galaxies
wobbling stars
globular clusters
The type of star system is galaxies.
What is star system?Star system is a part of solar system that comprises of different types and shapes of stars each performing it function which orbit around each other and bound by gravitational force.
Therefore, The type of star system is galaxies
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Sea turtles spend most of their lives at sea feeding on jellyfish. When it is time to lay their eggs, mature females come ashore. They dig
nests in the sand along the coast, lay their eggs, and then return to the sea. The data below show the changing sea levels since the late
1800s.
Answer:
this is not a very clear question T-T
Explanation:
wish i could help
Answer:
Explanation:
Afterwards, only females come ashore to nest; males almost never return to land ... Most females return faithfully to the same beach each time they are ready to nest. ... When the turtle has finished digging the egg chamber, she begins to lay eggs. ... Well over 90% of a sea turtle's life is spent in the water – feeding, mating, ...