Answer:
Explanation:
La quitina es un polisacárido estructural grande hecho de cadenas de glucosa modificada. La quitina se encuentra en los exoesqueletos de insectos, las paredes celulares de los hongos y ciertas estructuras duras de los invertebrados y los peces. En términos de abundancia, la quitina es superada solo por la celulosa
Levaduras Las levaduras son miembros de un grupo superior de microorganismos llamados hongos. Son organismos unicelulares de forma esférica, elíptica o cilíndrica. Su tamaño varía mucho, pero generalmente son más grandes que las células bacterianas.
Answer:
Si habla de quitina está haciendo referencia a los hongos y por lo tanto la respuesta son las Levaduras ya que son una especie de hongos unicelulares.
Why are antibiotics unhelpful for treating the common cold?
•
A. Colds are caused by viruses.
• B. Antibiotics cannot treat illnesses.
• C Bacteria are not killed by antibiotics.
O D. Colds are caused by antibiotics.
Which example is a way that intercellular Communication occurs
Answer:
A signal is sent from a nerve cell to a muscle cell
Explanation:
I just took this test and this was the correct answer.
Answer: A signal is sent from a nerve cell to a muscle cell
Explanation:
Would the distance from the Sun to the next closest star be more or less than
39.4 Astronomical Units? Why or why not?
Answer: The distance from the sun to the closest star would be less. I dont know why, but their is a star that is close to the sun. The average distance between them is about 23 astronomical units. 23 is of course less then the 39.4. Also the 23 is a little more than the distance between the sun and Uranus.
Explanation: ( This is new information, not old.)
The distance from the Sun to the closest star cannot be less than 39.4 AU because both stars will start attracting each other.
Astronomical Units:An astronomical unit is equal to the distance between the earth and the sun.The nearest star from our sun is Alpha Centauri which is 4.367 light-years away from our sun.If a star is just 34 astronomical units away from our sun, the sun and the closest star will start attracting each other due to the high gravitational force. This event results in the destruction of the solar system.Therefore, the distance from the Sun to the closest star cannot be less than 39.4 AU.
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which molecule makes up the hereditary material in humans and almost all other organisms
Answer:
DNA
Explanation:
SCHOOL i learned this
Answer:
deoxyribonucleic acid
DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person's body has the same DNA.
I think, u welcome if right, sorry if wrong ;)
PLEASE ANSWER!!! TIME LIMITED!!! Which tool would be best for monitoring how land use changes over time?
A. pH meters
B. Satellite images
C. Turbidity charts
D. Bioindicators
Answer:
B. Satellite
Explanation:
It has the angles for above and it shows how the land changes through time
what is the relationship between the ocean wave and the energy of that wave?
Answer:
The amount of energy in a wave depends on its height and wavelength as well as the distance over which it breaks. Given equal wavelengths, a wave with greater amplitude will release more energy when it falls back to sea level than a wave of lesser amplitude.
Facial dimples and free earlobes are both considered dominant human traits. What are the expected phenotypes of the offspring of a female with dimples and free earlobes (DDFf) and a male with no dimples and attached earlobes (ddff)? Group of answer choices
Answer: 50% with dimples and free earlobes and 50% with dimples and attached earlobes
Explanation:
Since both the facial dimples and free earlobes are considered to be dominant human traits, this implies that the expected phenotypes of the offspring with regards to the scenario given in the question would be 50% with dimples and free earlobes and also there will be 50% with dimples and a attached earlobes.
50% with dimples and free earlobes and 50% with dimples and attached earlobes.
Dominant and recessive traits exist when a trait has two different forms at the gene level. The trait that first appears or is visibly expressed in the organism is called the dominant trait. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait.Since both the facial dimples and free earlobes are considered to be dominant human traits, this implies that the expected phenotypes of the offspring with regards to the scenario given in the question would be 50% with dimples and free earlobes and also there will be 50% with dimples and an attached earlobes.
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Here are some of the tRNA molecules in Lucy's white blood cells. Let's see if tRNA #1 is carrying the correct amino acid for its anticodon.
Using the RNA Pairing Rules, find the correct codon for this tRNA's anticodon.
Anticodon
CCA
Codon
Amino Acid
RNA Pairing Rules
A ↔ U
G ↔ C
Answer:
For the tRNA anticodon CCA the corresponding codon is GGU, which codes for the amino acid Glycine (Gly).
Explanation:
Transfer RNA or tRNA is responsible for driving the right amino acid into protein synthesis, once the mRNA codon has been translated by the ribosome. It is for that reason that each mRNA codon must have a complementary tRNA anticodon.
The RNA pairing rules is that each nitrogenous base has a complementary base, so:
- Adenine is complementary with uracil A=U
- Cytosine is complementary with Guanine C=G
In this case, it can be seen that:
For the anti-codon: CCACodon: GGUAminoacid: GlyAnswer:
For Anticodon it's: CCA
Codon it's: GGU
Amino Acid it's: Glycine (but when typing in the box for Amino Acid I typed in GGU and it was correct so that's the answer for Amino Acid.)
Hope this helps!
what is a roan color in cattle is controlled by codominant genes for both red and white hair. if a roan cow is crossed with a white bull, what percentof offspring would be white?
Answer:
50%
Explanation:
Roan color is controlled by two codominant alleles. Let us assume that the red color allele is R and the white color allele is W. Thus, the roan color would be RW.
Roan color cow is crossed with a white bull;
RW x WW
RW RW WW WW
RW = roan = 50%
WW = white = 50%
1/2 or 50% of the offspring would be roan color while the remaining 1/2 or 50% would be white in color.
What careers would a student studying biotechnology most likely pursue??
Answer:
Agricultural research is your answer
Explanation:
Look on Quizlet :)
How has human land use impacted the environment?
the answer is for anyone who needs it Ways that humans impact the environment is pollution and deforestation which can cause global warming and mass extinction. When humans pollute the earth they slowly start to cause global warming. When we burn fossil fuels to generate electricity, drive our cars, and power our lives we release heat trapping gasses into the atmosphere which slowly makes the world warmer. Deforestation get rid of some of our oxygen supply but it also can lead to mass extinction. When we cut down and burn trees it gets rid of animals homes. If the animals homes get destroyed they are forced to compete with other animals for their survival. Therefor one animal will survive while the other one dies and if this process occurs frequently it leads to many animals going extinct.
Answer:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These negative impacts can affect human behavior and can prompt mass migrations or battles over clean water.
Human activities causes extreme adverse conditions in the environment which resulted eben in the eventual devastation of some species from earth. The selfish actions of humans causes all kinds of pollution in nature.
What are human impacts?The term "human impact on the environment" (or "anthropogenic impact") refers to alterations to biophysical environments as well as to ecosystems, biodiversity, and natural resources.
Environmental changes made to meet societal requirements have negative repercussions. global warming, environmental deterioration (such as ocean acidification), mass extinctions and biodiversity loss, ecological catastrophe, and ecological collapse, to name only a few.
Population expansion, overconsumption, overexploitation, pollution, and deforestation are some human activities that harm the environment on a global scale.
It has been suggested that some of the issues, such as global warming and biodiversity loss, pose grave hazards to the existence of the human species.
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How does industrial gases pollute atmosphere explain?
Industrial gases contains carbon dioxide.
Such as Dust, smoke released from industries caused by air pollution
Which of the following statements about topographic maps is false?
A. Elevations are found on topographic maps
B. We can use topographical maps through the use of contour lines.
C. Topographic maps show the elevation through the use of contour lines.
D. When contour lines are close together the slope is gentle or flat.
Answer:
Elevations are found on topographic maps.
Explanation:
Topographic maps use isoline lines to represent elevation. These maps are useful for construction and hiking trails. Hope this helps :)
9. In pea plants purple flowers are dominant to white flowers.
If two white flowered plants are cross, what percentage of their
offspring will be white flowered?
10. A white flowered plant is crossed with a plant that is
heterozygous for the trait. What percentage of the
offspring will have purple flowers?
11. Two plants, both heterozygous for the gene that controls
flower color are crossed. What percentage of their offspring
will have purple flowers?
What percentage will have white flowers?
A white flowered plant is crossed with a plant that is heterozygous for the trait. The percentage of the offspring will have purple flowers is 100%.
What do you mean by heterozygous?The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair.
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.
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Can we get colored shadows? Why/why not?
Answer:
A shadow is an area where direct light from a relatively small source is blocked by some opaque object. If the source is genuinely the only light around, the shadow will be absolutely black, and will have no colour.Choose all the answers that apply.
Chromosomes _____.
are tight coils of DNA
are carried on genes
always occur in pairs
can be analyzed in a karyotype
carry thousands of genes
Answer:
are tight coils of DNA
carry thousands of genes
Explanation:
Answer:
1,5
Explanation:
What feature of alcohol fermentation makes it more suitable for the baking process than lactic acid fermentation?
A. Alcohol fermentation generates NAD+ from NADH, but lactic acid fermentation generates NADH from NAD+.
B. Carbon dioxide gas is produced as a by-product of alcohol fermentation but not lactic acid fermentation.
C. Yeasts can use alcohol fermentation, but only human muscle cells can use lactic acid fermentation.
D. The products of alcohol fermentation are edible but those of lactic acid fermentation are not edible.
Answer:
The correct answer is : B. Carbon dioxide gas is produced as a by-product of alcohol fermentation but not lactic acid fermentation.
Explanation:
In t5he lactic fermentation, the end product is lactic acid whereas in Alcohol fermentation produces by-product carbon dioxide gas which makes it more suitable for baking.
Alcohol fermentation takes place the bread is made as gas is what puts tiny air bubbles within the dough of the bread and makes bread lighter consistency we are used to. Yeast helps in producing carbon dioxide by alcohol fermentation.
Answer:
B. Carbon dioxide gas is produced as a by-product of alcohol fermentation but not lactic acid fermentation.
PLATO//EDMENTUM
Aristotle's model of classification was used until the 1600s. Plants were categorized
by the size of their stems and animals by where they lived. What would be a
limitation of using this model?
Answer:
some organisms fit into more than one category
Explanation:
Its Right
plz help its for a big grade
needs at least (10 sentences)!!!!!
Answer:
Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. As such, the atom is the basic building block of chemistry.
Atom: has equal number of +ve charge (protons) and -ve charge electrons and hence atom has charge.
Neutrons (having no charge) and protons are present in nucleus. Electrons keep revolving around the nucleus in different shells.
Replication is when DNA is?
O Mutated
O Changed
O Copied
O Destroyed
Who said that all plants are made up of cells.
Answer:
Theodor Schwann
Explanation:
in 1839
the typhoons that pass through the philippines travel
In a plant species, the allele for dark green leaves (D) is dominant over the allele for light green leaves (d). A plant with Genotype (Dd) is crossed with a plant with genotype (did). What percentage of the offspring are expected to be hybrid for the leaf color trait. A 0% B 25%. C.50%. D 75%
The percentage of the offspring that is expected to be hybrid for the leaf color trait is 50%. The correct option is C.
What are alleles?The trait is caused by a pair of two alleles on the chromosome, and there are two possible outcomes. The dominant allele, which is typically written in capital letters and will control the organism's phenotype even in the presence of the other allele, is the one that has the ability to silence the other allele.
It is used in biology to refer to inherited traits that do not manifest in the phenotype of the individual who possesses them but may do so in their offspring.
Recessive alleles, which are only expressed when they are homozygous, are this other type of allele. Both heterozygous and homozygous genotypes exhibit the dominant allele.
Dd is crossed by dd.
100 / 2 = 50%.
Therefore, the correct option is C.
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A grandfather clock needs to have a period of one second. What length of pendulum should be hung for
the clock to keep good time?
Answer:
Explanation:
hello not sure .but just started learn physics but think so 1 metre (39 inches) long. please mark me brailiest for answer or trying . thx
What molecule provides the energy that powers active transport?
A. ATP
B. Glucose
C. Water
A shoreline's first line of defense against hurricanes is
Answer:
Mangroves
Explanation:
Ruffled trees that grow on the north Atlantic coast of Florida. Mangroves are rapidly adapting to climate change. When an area becomes hospitable, its seed, which can float away for a long time, soon begins to germinate and take root in it. They represent a unique ecosystem and usually grow in shallows near the coast.
What are some benefits of biotechnology?
Answer:
It can improve health and reduce hunger simultaneously
It creates flexibility within the food chain
It offers medical advancement opportunities
It allows us to preserve resources
It helps us minimize or eliminate waste products
It can reduce infectious disease rates
Identify the statement below that is NOT a principle of evolution. O Populations evolve, individuals do not O Negative adaptations will become more common in a population O Variations occur naturally within a population Adaptations help individuals compete successfully for survival
Answer:
Negative adaptations will become more common in a population
Explanation:
that's the one that is NOT a principle
Negative adaptations will become more common in a population is NOT a principle of evolution.
what is population ?A discrete accumulation identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population.
A population consists of a same group of species who reside in a particular geographical place with their reproductive capacity to interbreed.
In a population Not all individuals are able to survive and reproduce due to genetic variations in them, a local population is restricted to a smaller area or can occupy a larger area, making up for the entire species.
when individuals in local populations spread between other local populations called as metapopulation.
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This is the molecule that supplies the genetic code for the cell.
DNA is the molecule that supplies the genetic code for the cell
Weak hydrogen bonds between the nitrogenous base pairs hold the two strands of DNA together. Why are the strands held together by weak hydrogen bonds instead of covalent bonds
Answer:
Explanation:
Hydrogen bonding is usually occur wen interaction with hydrogen atoms occur.
Hydrogen bonds joins DNA polymers because an hydrogen atom occur on on one base which is called hydrogen bond donors and another oxygen or nitrogen atoms on the base across from it which is called hydrogen bond acceptors.
Adenine “A” a purine and Thymine “T” a pyrimidine each have a donor and one acceptor, whereas Cytosine “C” a pyrimidine has one donor and two acceptors, and Guanine “G” a purine has one acceptor and two donors.
This atoms allows for hydrogen bond between them that gives them structure of DNA molecule.
A nucleotides is hydrogen bonded to T nucleotides while C nucleotides is hydrogen bonded to G nucleotide this is called complementary base pairing.