Answer: Varies
Explanation:
It's based on there being many different types.
What is the most likely explanation for
the DNA found in mitochondria?
Answer:
Origin. Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being derived from the circular genomes of bacteria engulfed by the early ancestors of today's eukaryotic cells.
Explanation:
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the answer is A. voting.
What is the empirical formula of a compound that contains 4.03 g of hydrogen per mole, 64.14 g of sulfur per mole, and 128.00 g of oxygen per mole?
Answer:
Oct 27, 2015 · CH_4 For this kind of problem, you can assume that the weight of the unknown sample is 100g ( since 75% C + 25% H = 100%). Thus, weight of C = 75g weight of H = 25g Since chemical formulas deal with number of moles rather than weight in grams, you need to convert each element by multiplying it to their respective atomic masses.
Explanation:
The empirical formular i H₂SO₄
The first step is to calculate the compound by the molar mass
Hydrogen, Sulphur, Oxygen
4.03/1 , 64.14/32 , 128/16
4.03 , 2 , 8
Divide by the lowest value
4.03/2 , 2/2 , 8/2
2, 1 , 4
H₂SO₄
Hence the empirical formula is H₂SO₄
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What is the nervous system composed of?
A. The central nervous system
B. The peripheral nervous system
C. The respiratory system
D. Answers A & B
Answer: D) the central and peripheral nervous systems
hope this helps
what is the main reason scientist do experiments?
A) to find out if a hypothesis is correct
B) to provide jobs for scientists
C) to find different ways to use lab equipment
D) to educate science students
Check all statements below that are true
All organisms must compete for survival.
When
organisms struggle to survive, they usually mutate
to
Some
organisms have phenotypes that make them better
increase chances of reproduction.
environment
competitors than others in their
Animals undergo natural selection, but plants and other organisms
Natural selection continues to occur even today
generally do not.
I
Phenotypes found In the most successful members of a species become the most prevalent after
several generations.
M
A decrease in food availability will increase the variation in a population.
Answer:
Statements thar are true:
Some organisms have phenotypes that make them better increase chances of reproduction.
Natural selection continues to occur even today
Phenotypes found In the most successful members of a species become the most prevalent after several generations.
Explanation:
It is not true that all organisms must compete for survival, sometimes the conditions are good and there is enough food or good climate conditions and that makes no need of competition an increase in the individuals of the species.
Animals undergo natural selection, this is a random natural phenomenon that can make plants and animals adapt better or worse to the enviromental conditions. This cause that the beneficiaries can adapt, survive and reproduce and became the most prevalent after generations.
Mutations are not phenomen that occur because the living being needs it, but rather they are phenomenon that occur at random at any time and determine the possibility of survival.
A decrease in food availability will do the contrary, decrease the variation in a population because it makes that only those who manage to adapt to eat another food survive, for example.
Answer:
A C E F
thats that ones
is broccoli a dicot or monocot?
Answer:
Broccoli is a dicot
Explanation:
I looked it up on the internet :)
Which of the following statements best goes with the Law of Conservation of Energy
Explanation:
Just choose the one that is similar to that of this : Energy is neither created nor destroyed in a given system.
note -it is always unidirectional i.e - Goes in only one path.
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DNA and RNA contain nucleotides that code for what?
A Carbonic Acids
B Amino Acids
C Hydrochloric Acids
D Lactic Acids
Answer:
your answer is definitely B: Amino Acids
Explanation:
Answer:
B
Explanation:
Indicater I need the meaning
Answer:
indicator can mean two different things,
1. a thing, especially a trend or fact, that indicates the state or level of something.
2. a gauge or meter of a specified kind.
Hope this heled!
If a 1000 bp of DNA were inserted between the two restriction sites, how would the banding pattern on the gel differ from the one you drew in part a
positive and negative punishment are meant to?
Answer:
yessssssssssssssssssssss
Which of the following statements apply to leukocytes? Select all that apply.
Multiple select question.
They eject major organelles when mature.
They are capable of protein synthesis.
They live approximately 120 days.
They retain their organelles throughout their life time.
They are not uniform in form and function.
Explanation:
leukocytes are white blood cells. mainly 4 killing bacterial infections.
Leukocytes are the specialized cells which are a part of blood. These are known as white blood cells. These protects the body. These produce antibodies. Thus, the correct options are B, D, and E.
What are Leukocytes?
Leukocytes are the white blood cells. These are a type of specialized cell type which is present in blood along with erythrocyte and plasma. Leukocytes are primarily responsible for protecting the body from pathogens and germs by producing antibody proteins which fight against these organisms.
Leukocytes are irregular in shape. They can change their shape to engulf or kill the bacteria which enters the blood to prevent disease. Erythrocytes change their shape which allows them to pass through the capillaries which are very tiny.
Therefore, the correct option is B, D, and E.
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Assume for the purposes of this problem that the order of and distances between three linked genes are the following: unc-32 10mu vab-7 20mu dpy-17 What is the probability of obtaining a phenotypic unc-32 vab-7 offspring from a cross between a heterozygous fly(unc-32 vab-7 dpy-17/ ) and the triple recessive nematode
From the distances between genes and their order, it is possible to get recombination frequencies per region (simple and double recombination frequencies). The probability of obtaining a unc-32 vab-7 + offspring is 0.09 = 9%.
---------------------
We are usually asked to get the order of genes in a chromosome. To do so, we need to get the distances between genes. And to get distances between genes, we need to get their recombination frequency.
When three genes are involved, we get the distances by taking the recombination frequency, P, per region.
We talk about regions, R, when we are making reference to the space between two genes.
Gene 1 -----(R1)----- Gene 2 --------(R2)------ Gene 3
P1 P2
P1 = recombination frequency between Gene 1 and Gene 2P2 = recombination frequency between Gene 2 and Gene 3⇒ P1 = (SR + DR) / N
⇒ P2 = (SR + DR)/ N
Where:
SR is the number of simple recombinants in each region, DR is the number of double recombinants in each region, and N is the total number of individuals.The genetic distance will result from multiplying that frequency by 100 and expressing it in map units (MU). One centiMorgan (cM) equals one map unit (MU).
In the exposed problem, we need to do the inverse way. We already have the order and distances between genes, and we need to get the recombination frequency, P.
We know that the order of genes is as follows,
unc-32 ------------- vab-7----------------- dpy-17
Distances are:
Region 1 = 10 MURegion 2 = 20 MUWe need to get the probability of obtaining a phenotypic unc-32 vab-7 + offspring from a cross between a heter0zyg0us fly (unc-32 vab-7 dpy-17/ + + + ) and the triple recessive nematode (unc-32 vab-7 dpy-17 / unc-32 vab-7 dpy-17).
Cross:
unc-32 vab-7 dpy-17 / + + + x unc-32 vab-7 dpy-17 / unc-32 vab-7 dpy-17
To get the genotype unc-32 vab-7 + , a simple recombination, SR, must occur in region 2.
So we need to get the simple recombination frequency in Region 2.
To do so, first we need to clear the following equation
Distance between vab-7 dpy-17 = P2 x 100 = 20 MU
20MU = P2 x 100
P2 = 20 / 100
P2 = 0.2
The recombination frequency in region 2 (P2) is 0.2.
Now, we need to get the simple recombination frequency in this region.
P2 = (SR + DR) / N
P2 = Simple recombinants Frequency + Double recombinants Frequency
R1 = 10 MUR2 = 20 MUDouble recombinants Frequency = 10% x 20% = 0.1 x 0.2 = 0.02P2 = Simple recombinants Frequency + Double recombinants Frequency
0.2 = Simple recombinants Frequency + 0.02
Clearing the equation,
Simple recombinants Frequency = 0.2 - 0.02 = 0.18
Simple recombinant frequency in region 2 will produce the following two chromosomes,
unc-32 vab-7 ++ + dpy-17So half of this frequency will produce one chromosome, and the other half will produce the other chromosome.
unc-32 vab-7 + ⇒ 0.09+ + dpy-17 ⇒ 0.09So, the probability of obtaining a phenotypic unc-32 vab-7 + offspring is 0.09 = 9%.
---------------------------------
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How is a proton gradient formed across the inner mitochondrial membrane?
Answer:
Energy is released in these “downhill” electron transfers, and several of the protein complexes use the released energy to pump protons from the mitochondrial matrix to the intermembrane space, forming a proton gradient.
Explanation:
How toxins are accumulated as you go up in trophies levels in an ecosystem
Answer:
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What best describes main component of carbohydrates
Answer:
All carbohydrates, including sugar, therefore contain the same three elements: carbon, hydrogen, and oxygen. Different arrangements of these elements form single units to make different types of carbohydrates.
What do weather forecasters use to forecast the weather?
A. superstitions
B. beliefs
C. weather patterns
D. dreams
Tornado Effects on the Land
Answer:
They have a small effect
Explanation:
Because when you consider the size of the earth, tornadoes have a small effect on earth, that's your answer?
Answer:
Tornado Effects on the Land-well tornadoes strike are greatly impacted. Trees and plants can be uprooted, and diseases in the soil are spread.
Explanation:
DEADLY!!
This model chose to include certain features and exclude other features. For example, this simulation only includes rabbits, wolves, and grass but there are other predators of rabbits and other food sources for rabbits. Why do you think the creators focused on these data elements and not others
The creator focused on these data elements and not others because he was trying to create a food chain instead of a food web.
In the ecosystem, the living and non-living things interact over time leading to exchange of energy.
A food chain can be defined as the steps through which energy transfer occurs in an ecosystem.
The energy flows from the producers (grass), primary consumers, (rabbits) and then the secondary consumers (wolves).
The energy flow is indicated with an arrow thus,
grass ---> rabbit -----> wolves.
Food chain, therefore includes linear sequence of organisms.
Food web on the other hand illustrates a complex feeding relationship within the ecosystem.
The food web is made up of a prey that can be eaten by more than one predator.
Therefore, even though there where other predators of rabbits and other food sources for rabbits, he chose only few features to create a food chain.
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what is the chemical formula for the sugar carbohydrate produced by photosynthesis?
A. H2O
B. CO2
C. C6H12O6
D. O2
Answer: C
Explanation:
If you were born November 16, 1986 how old are you today
Answer:
2021-1986 = 35 years old
Explanation:
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In very extreme weather, the xylem cells are damaged as well. Describe how the plant is affected if the xylem is unable to function correctly.
Answer:
The plant will die
Explanation:
Xylem's job is to transport water and minerals from the soil to the parts of the plant. Without it the plant won't receive the required minerals and the plant will die.
Identify this functional group
Answer:
Hydroxyl
Explanation:
Hydroxyl groups are simple structures consisting of an oxygen atom with two lone pairs bonded to a hydrogen atom.
A hydroxy or hydroxyl group is a functional group with the chemical formula -OH and composed of one oxygen atom covalently bonded to one hydrogen atom.
Using these given definitions, a hydrogen bond is labeled with one linkage, while a covalent bond is with two links to the Carbon Atom.
See attached image for a similar diagram for proof.
Due to a recent drought, a farmer has lost quite a bit of soil on his fields because:
A) the rain has washed it away.
B) the animals have been trying to eat the soil due to lack of food.
C) the plants have absorbed the soil.
D) wind has carried away the dry soil.
Pls help
Answer:wind has carried away the dry soil
Explanation:
1. In the digestive system, where are nutrients absorbed?
A: Small intestine
B: Large intestine
C: Or Liver
2. In the circulatory system, what type of vessels are able to exchange materials by passive transport?
A: Capillaries
B: Arteries
C: Veins
3. Which system controls all other organ systems?
A: Endocrine
B: Nervous
C: Respiratory
4. How does the integumentary system aid with homeostasis?
A: Controlling body temperature
B: Both A and B
C: Getting rid of excess salt through sweat
5. Which system is in charge of producing offspring?
A: Muscular
B: Urinary
C: Reproductive
6. Bones, cartilage and ligaments are all structures in what organ system?
A: Skeletal
B: Endocrine
C: Circulatory
7. Which of the following statements about the circulatory system is NOT true?
A: The liver is used to clean blood and remove any wastes and excess water/salts.
B: The endocrine system uses your blood to carry hormones around the body.
C: it delivers nutrients, gases and other materials throughout the body.
Answer:
1. Small intestine
2. A. Capillaries
3. B. Nervous system controls all other organ systems.
4. A. Controlling body temperature.
And hydration.
B. Producing sweat to regulate body temperature and get rid of waste.
5. C. Reproductive system.
6. Skeletal system
7. A
Explanation:
Which of the following systems does NOT excrete some form of waste ?
A: Urinary
B: Integumentary
Or C: Skeletal
Answer:
Option C is write answer
su**
Reactions occur within the sun to transform _____ energy into _______ energy.
Answer:
Chemical and light and thermal energy.
Explanation:
Reactions occur within the sun to transform chemical energy into light and thermal energy.
In the Sun, chemical energy transforms into light and thermal energy. Plants transform the Sun's light energy into chemical energy during the process of photosynthesis.
Hope this helps :)
Answer:
chemical and thermal energy
Which of the following describe how seabird populations are affected by climate change?
Answer: Varies
Explanation:
It depends on the time of season at the given moment.
