Answers
Answer:
A
Explanation:
Both mitochondria and chloroplast lack a nucleus, but instead, they are found in the cell (which is mostly eukaryotic). They are also thought to have their evolutionary origins as simple single-celled organisms.
Related Questions
What is the cell cycle
Answers
Answer:A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division.
Explanation:
A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division.
Height is a polygenic trait in humans. Which of the following statements best explains the genetics of this trait? O Height is controlled by more than one gene. Height is controlled by a single dominant gene. The gene for height is located on the X chromosome. The gene for height is located on the Y chromosome.
Answers
Answer: Height is controlled by more than one gene
Explanation:
Polygenic = multiple-gene inheritance. If you break it down into it's roots poly = many and gen = gene, which literally translates to many genes.
Answer:
Height is controlled by more than one gene
Explanation:
__
Explain the difference between a cold front and a warm front.
Answers
Answer:
At an occluded front, the cold air mass from the cold front meets the cool air that was ahead of the warm front. The warm air rises as these air masses come together. Occluded fronts usually form around areas of low atmospheric pressure.
What is blood type an example of
Answers
Answer:
blood is a type of connective tissue
Explanation:
The incidence of MRSA, methicillin-resistant Staphylococcus aureus, has increased in the last twenty years. The rise of MRSA strains is significant, and MRSA infections are often developed within the hospital system rather than outside of them. In terms of how MRSA strains developed, evaluate each statement below. Choose the statements that accurately describe how MRSA strains occurred. You may select ALL that apply.
A) Individuals that are admitted to the hospital are likely already carrying MRSA infections.
B) Hospitals treat patients with MRSA with drugs that cause the Staphylococcus aureus to mutate more rapidly.
C) Hospital systems provide a mechanism for extreme selection pressure with sterile technique and heavy use of antibiotics.
D) Staphylococcus aureus can transmit genetic components containing the methicillin resistance to offspring and other members of the population.
E) Staphylococcus aureus that was already genetically predisposed to be resistant to methicillin existed in small proportions of the original population. Eliminate
Answers
The incident of the MRSA describes the strains that occurred include :
The hospital systems provide a mechanism for extreme selection.The staphylococcus aureus can be transmitted into genetic components.Staphylococcus aureus is genetically predisposed to be resistant.What is methicillin?Methicillin is an antibiotic that was used for the treatment of bacteria that causes infection in organisms and is derived from penicillin. Being a narrow-spectrum antibiotic it was discovered in the 1960's.
The drug is resistant to the B lactam antibiotic. The hospital thus provides it with extreme care and can be used for genetic treatment.
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The statements that accurately describe how MRSA strains occurred are: Individuals that are admitted to the hospital are likely already carrying MRSA infections. Hospital systems provide a mechanism for extreme selection pressure with sterile technique and heavy use of antibiotics. The correct options are A, C, and D.
These claims draw attention to crucial elements involved in the emergence and dissemination of MRSA strains.
It is possible for someone to carry MRSA before entering a hospital, increasing the likelihood that an infection would take place there (Statement A).
Hospital systems, with their emphasis on sterile procedures and heavy reliance on antibiotics, produce a setting with high selection pressure that favours the survival and spread of MRSA strains (Statement C).
Staphylococcus aureus can also pass on genetic elements that are resistant to methicillin to offspring and other population members, aiding in the propagation of resistant strains (Statement D).
Thus, the correct options are A, C, and D.
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Metals and minerals accumulate in specific regions on Earth due to _______ activity and as part of the rock cycle. When sustainable yield is achieved, the rate of replenishment is equal to the rate at which the resource is harvested. This means that the resource can be harvested _______. Plate motion can create the proper temperature and _______ underground for hydrocarbons to release from kerogen.
Answers
Answer: volcanic
indefinitely
pressure
Explanation:
It should be noted that metals and minerals are regarded as non renewable resources which implies that they cannot be replenished.
They accumulate as a result of volcanic activities which takes place in the Earth. The resources can be harvested indefinitely when there is achievement of the sustainable yield. Plate motion can then create the proper temperature and pressure underground that is required for the hydrocarbons to release from kerogen.
Answer:
1. Non-renewable
2. Volcanic
3. Indefinitely
4. Pressure
5. Metals are found in rocks and can be moved by erosion and rainfall. these processes carry metal away from weathered rock, causing metals to accumulate in sediments, rivers, and streams.
Explanation:
From Penn
One of the deadliest animals on earth is the rough skinned newt. It produces highly toxic skin toxins. In the 1970s, three hunters were found dead while camping in Western Oregon when they accidentally boiled a rough skinned newt in their coffee pot. Scientists discovered that they were becoming more toxic due to a common predator: the garter snake. As garter snakes were growing more immune to their toxins, rough skinned newts were growing more toxic in what is known as an “evolutionary arms race”.
Though the genes for the garter snake immunity are most likely polygenic, however, let us assume that the immunity is caused by a single dominant allele for this exercise. Those without the dominant gene (the recessive genotype), are NOT immune to the toxins of the rough skinned newt.
In 1975, in a population of 88 garter snakes on the coast of Oregon, 54 of them exhibit the recessive genotype are therefore not immune to the rough skinned newt’s toxin.
What is the frequency for the recessive genotype (q^2)?
Solve for q:
Solve for p:
How many snakes are heterozygous?
How many snakes are homoozygous dominant?
Answers
Answer:
One of the deadliest animals on earth is the rough skinned newt. It produces highly toxic skin toxins. In the 1970s, three hunters were found dead while camping in Western Oregon when they accidentally boiled a rough skinned newt in their coffee pot. Scientists discovered that they were becoming more toxic due to a common predator: the garter snake. As garter snakes were growing more immune to their toxins, rough skinned newts were growing more toxic in what is known as an “evolutionary arms race”.
Though the genes for the garter snake immunity are most likely polygenic, however, let us assume that the immunity is caused
What are the two allele for this trait? ||
Answers
Step by step
PLEASE ANSWER THESE 3 QUESTIONS ASAP GIVING 23 POINTS AWAY!!!!!!!!!
Answers
Answer:
1.B PLEASE ADD BRAINIEST
2.D
How does a population grow with unlimited food, space and water
Answers
Answer:
If there are unlimited food space and water, then whatever it is that is populating, will not die
Then it will reproduce causing the population to grow.
☁️ Answer ☁️
annyeonghaseyo!
Your answer is:
Exponentially, unless it has a predator.
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Insulin is a protein that maintains homeostasis in the amount of sugar in the blood. When there are high levels of sugar in the blood, cells in the pancreas generate more insulin and release it into the blood. This causes muscle cells and fat tissue to absorb sugar. When there are low levels of sugar in the blood, the production of insulin is slowed.
What is the most likely cause of the phenomenon described?
1. Glucose has a chemical reaction with blood cells to create insulin.
2. The expression of the insulin gene is regulated by blood glucose concentration.
3. Pancreas cells have more copies of the insulin gene than other cells.
4. The body has a surplus of insulin stored in the pancreas and releases it when needed.
Answers
Option B(2) :
The expression of the insulin gene is regulated by blood glucose concentration.
i
think so..
3. Blood types: House elves have the same basic blood
types that human have; A,B, AB and O.
a. If a male house elf with blood type o has children with a female house elf
who is blood type
AB, what will the phenotypic ratios of their offspring be? (show your work).
b. A male house elf with blood type A (but whose mother was blood type O) has
children with a female elf who is type B (whose mother was type A and whose father
was type AB). What percentage of their offspring should be blood type B?
c. Dobby is blood type A and Harry Potter is blood type AB. Is it possible for Dobby to give
blood to his master? Can Harry give blood to Dobby? Explain.
Answers
Answer:
a. 1:1
b. 25%
c. Dobby can give blood to Harry, but Harry cannot give blood to Dobby.
Explanation:
a. Type O blood is recessive to type A blood and type B blood.
A B
O AO BO
O AO BO
According to the Punnett square, 50% of the offspring will have the AO genotype and 50% will have the BO genotype (1/2=50%). This means 50% will have type A blood and 50% will have type B blood, as the alleles for type A and type B blood are dominant over the allele for type O blood.
b. The male house elf's genotype is AO. If his mother was type O, then she only had the type O alleles to pass down to him, so he had to inherit one. The female house elf's genotype is BO. Her mother had to have the genotype AO. This is the only way the female would have inherited type B blood. If her mother had the AA genotype, then she would've had type AA or AB blood.
B O
A AB AO
O BO OO
According to the Punnett square, their offspring have a 25% chance of displaying any of the four blood types (1/4=25%).
c. Dobby has type A blood and Harry has type AB blood. This means that Dobby can give blood to Harry, as Harry has A antigens. However, Harry cannot give to Dobby because Dobby doesn't have B antigens, so he would experience an incompatibility reaction.
If you have a semi-
permeable membrane and
both sides are at
equilibrium, which direction will the solutes move?
A. Only to the left
B. In both directions
Answers
Solutes will always try to reach equilibrium, so of course they would need to move in both directions to balance out everything.
Based on our knowledge of word parts, what
substrate do you think the enzyme to break
down nucleic acids might be names?
Answers
The seasons we experience are caused by Earth's-
tilted axis and the Sun
tilted axis and size
orbit and distance from the Sun
orbit and distance from the Moon
Answers
Answer:
tilted axis and the sun
Explanation:
hope that is right :()))
Answer:
tilted axis and the sun
Explanation:
Isabella liked to sunbathe. However, after she learned that ultraviolet rays are a cause of environmental mutations, she decided to stop sunbathing When can an acquired mutation be passed from parent to offspring? O A only if the mutation occurs in the sex cells B. only if the mutation occurs in the y-chromosome C. only if the parent has an acquired mutation in the autosomal chromosome D. only if both parents do not have the mutation in the sex cells
Answers
Answer:
O A only if the mutation occurs in the sex cells
Explanation:
Mutations can be defined as genetic changes that occur in the DNA sequence of the genome of an organism. Mutations can be classified into two main types: 1-somatic mutations, which occur in somatic cells that form the body of the organism, and 2-germ-line mutations, which occur in sex cells or gametes (i.e., egg and sperm cells). Only germ-line mutations can be passed on to offspring and it occurs when a mutated gamete (either a sperm or an egg) comes together to form a diploid (2n) zygote.
What is the chance that the offspring will have hair?
Answers
Answer:
2 in 4, 50 percent
Explanation:
in the punnet square, you can see that half the boxes ar Hh, which means the offspring will have hair.
Need help with my science homework please and thank you
Answers
Answer:
I think its the first one
Explanation:
Select all the statements that correctly describe the difference between DNA and RNA.
A) RNA nucleotides contains uracil instead of thymine as in DNA
B) DNA consists of two strands of nucleotides while RNA has one
C) RNA consists of phosphate group while DNA has nitrogenous group
D) DNA nucleotide comprises deoxyribose sugar while RNA consists of ribose sugar
E) DNA nucleotides contain and adenine-uracil base pairing
F) RNA is more complex than DNA because it has more types
Answers
Answer:
A,B,D,
Explanation:
C,E and F are wrong
Answer:
DNA has thymine as a nucleotide, while RNA has uracil.
Explanation:
The DNA nucleotides are adenine, guanine, cytosine, and thymine; the RNA nucleotides are adenine, guanine, cytosine, and uracil.
please help me
[tex]help[/tex]
please
Answers
1. Nucleotide
2. Double Helix
3. Genome
4. Chromosome
5. Mutagen
These should be the answers considering the topic is biology!
What perfume do my ladies wear and what cologne do my gentlemen use? I wear Black Opium and Valentino... I'm trying to prove a point
Answers
Answer: I get my perfume from Victoria’s Secret
Explanation:
For a certain breed of cat, short tails are dominant (1) and long tails are
recessive (1). The Punnett square below shows a cross between two parents,
What is the phenotype ratio for this cross?
T
t
Tt to
TE
A 4 long. O short
B. 2 long, 2 short
C. 3 long, 1 short
D. I long, 3 short
Answers
The phenotype ratio for the cross would be 1 long:3 short.
PhenotypesThis refers to the physical expression of genes.
Let us assume that the allele for short tail is T while that of long tail is t.
Since short tails are dominant over long tails, any genotype with T will always be expressed as short tail.
Thus, TT and 2Tt will have short tails while only tt will have a long tail, making a ratio of 3:1.
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What is the chance that the offspring will have blue eyes?
ignore my choice.
Answers
Answer:
0 in 4% is the answer.
What are six characteristics of magnet
Answers
Answer: 1. Magnetic lines of force start from the North Pole and end at the pole, they're continuos through the body of the magnet , Magnetic lines of force can meet up with iron more easily than air. , Two magnetic lines of force can't intersect one another, they have a tendency to contract longitudinally., they have an inclination to expand laterally.
Which of the following is one goal for creating transgenic organisms?
Answers
To treat and/or cure diseases
What are transgenic animals?
Transgenic animals are animals (most commonly mice) that have had a foreign gene deliberately inserted into their genome. Such animals are most commonly created by the microinjection of DNA into the pronuclei of a fertilized egg which is subsequently implanted into the oviduct of a pseudo regnant surrogate mother.
What are the uses of transgenic animals?
Applications of animal transgenesis is to obtain information on gene function and regulation as well as on human diseases and to obtain high value products to be used for human therapy.
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1. Solids have a definite volume and a definite shape
Group of answer choices
True
False
2. A mixture IS a pure substance
Group of answer choices
True
False
Answers
Answer:
1. True
2. False
Explanation:
Solids do have a definite volume and a definite shape
Mixture is an impure substance
Answer:
1. True, solids have both definite volume and shape
2. False, a mixture is not a pure substance
which of the following statement(s) are true about the atoms of any element? a. the number of protons in an atom of an element is unique to each element b. the number of protons and neutrons in ana atom of an element is unique to each element c. a proton is an atom of one element that is identical to a proton in an atom of another element d. the number of protons in an atom of an element is the same for all elements
Answers
Answer:
I think it's A
Explanation:
I'm guessing but i feel like it's def not D
explain what happens to the ecosystem and environment of an area if the suns raid iron is reduced
Answers
How do ocean currents influence people?
A. Oceans currents influence climate
B. Oceans Currents influence plate tectonics
C. Oceans currents influence the local politics of an area
D. Oceans currents influence the length of the days
Answers
Answer:
I think it is option A
oceans currents influence climate
hope it helps
Which statement is true of meiosis?
A. Organisms use meiosis to repair damaged cells.
B. Organisms use meiosis to grow.
C. Organisms use meiosis to make reproductive cells.
D. Organisms use meiosis to replace blood cells.
Answers
Answer:
C. Organisms use meiosis to make reproductive cells.
The statement 'organisms use meiosis to make reproductive cells' is TRUE of meiosis (Option C).
Meiosis is a type of reductional cell division by which a parental cell produces four (4) daughter cells having half of the genetic material.Organisms of sexual reproduction use this type of cell division to produce germinal (gametes) sex cells.During fertilization, two germinal gametic cells fuse to produce a cell (zygote) with a normal amount of chromosomes.In conclusion, the statement 'organisms use meiosis to make reproductive cells' is TRUE of meiosis (Option C).
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