Answer:
mitocondrial DNA can be traced through genorations
Explanation:
the third one
Antibiotic resistance can vary within a population of bacteria. The diagram below represents the changes in a population of bacteria as a result of exposure to antibiotic over time.
Explain how this is an example of natural selection, and why we can use this as evidence that evolution occurs.
Answer:
The resistance that some bacterial populations develop to an antibiotic is an example of natural selection because the individuals with more resistance are those that survive, being an evidence of evolution since resistance can be inherited to the following generations.
Explanation:
The resistance to antibiotics that bacteria develop is the best example of how natural selection and evolution occurs, especially because of the fast and easy reproduction of these microorganisms.
In the example it can be seen that only the the most resistant bacterial populations to the antibiotic survive over time. Antibiotic resistance is due to mutations developed by bacteria that modify their structure and function so that they are not affected by an antimicrobial. According to natural selection, these mutations make resistance an inherited trait, and future generations will not be sensitive to the effect of the drug.
Why does natural selection occur? Only resistant individuals survive the effect of the antibiotic.
How do you explain evolution? Successive generations of bacteria have evolved, through mutations, to resist the effect of an antibiotic.
Which of the following describes a response controlled by the endocrine system?
A. Dodging a moving car
B. Release of melatonin to regulate sleep cycle
C. Pulling your hand off a hot stove
Answer:
B. Release of melatonin to regulate sleep cycle
Explanation:
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Answer:
Answer is B
Explanation:
I had a project on this
In which organelle is ATP produced in the cell?
Answer: Mitochondrion
Explanation:Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
Answer:
Mitochondrion is the answer to this question
In the following list of infections, two of these are mentioned in the video clip that are caused by bacteria. Place a “B” by the two infections that are caused by bacteria. The other two infections are not mentioned in the video clip as they are not caused by bacteria. Place a “V’ by these as they are viruses and not bacteria.
_____ Common Cold
_____ Tooth Decay (resulting in root canal)
_____ Strep Throat
_____ Influenza (“flu”)
Answer:
Explanation:
V Common Cold
B Tooth Decay (resulting in root canal)
B Strep Throat
V Influenza (“flu”)
Strep throat is caused by streptococcus which is a bacteria. They are present but can grow in numbers due to other problems in the body.
Tooth decay is caused by bacteria and that is why we should avoid feeding them with sweets so they don't grow in numbers.
Influenza is a virus that causes the flu. We have a flu season each year and a vaccine against it.
The common cold is also caused by a virus and there are a few of them that cause the same kinds of symptoms.
7. On Galveston Island, an island 90 minutes away from Houston, ocean waves wash up onto the shore, typically picking up sand and depositing it further down the shoreline. Without human intervention, what would happen to the island?
Explanation:
they deleted the other one we were talking on wanna talk on this one now?!
What is the deletion?
A. An extra-base was added in
B. A base was removed
C. The wrong bases were matched together
Where is the stored chemical energy in a substance?!! URGENT
Answer:
Ionic bonds
Explanation:
Answer:
in the bonds that connect the atoms
Explanation:
Help Asap which point is it
Answer:
1
Explanation:
If you look at the way the earth spins, the wind would head in the opposite direction, meaning the left. You could think of it when like a car drives by. The wind would be created in the opposite direction that the car is moving.
I don't know much on this, because physics isn't my strong suit, but I hope this helps.
Describe the menstrual cycle depending on its variation of length and fertile and infertile phrases
Free points sorry man or woman its a rough world out here
I need help please 10 points
Answer:
Recessive
Explanation:
because, if the first generation is purple flowers that means the purple flower Dominant, Which makes the white flower Recessive.
Which of the following is NOT considered a greenhouse gas?
Select one:
A. Carbon Dioxide
B. Water Vapor
C. Nitrogen
D. Methane
Answer:
Water vapor is not a green house gas
Answer:
c.. nitrogen
Explanation:
What role does yeast play in sourdough?
Answer:
The yeasts cause the dough to rise by creating carbon dioxide bubbles, while the lactic acid bacteria provide the sour flavor (in the form of acetic acid and lactic acid) and preserve the bread by lowering its pH, which prevents the growth of food borne pathogens.
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4. The monk seal is an endangered marine mammal. What variables do you think might have caused it to become endangered?
Answer:
They got eaten more than they can reproduce
Explanation:
Answer:
Changes in, or damage to monk seal habitat are contributing to the danger posed to the species. These habitat threats include coastal development and sea level rise, which are shrinking the critical habitat areas needed by monk seals for rest and pupping activity.
Explanation:
Helpppppppp plssssssssss
Answer:
D
Explanation:
I studies cells last week. Plant cells have chloropasts and cell walls. Animal cells do not. Hope this helped :)
31. Which category of carbon-based molecules includes sugars and starches?
A. unsaturated fatty acids
B. phospholipids
C. proteins
D. carbohydrates
Answer: D. carbohydrates
Explanation:
Carbohydrates are molecules composed of carbon, hydrogen, and oxygen, and they include sugars and starches. Carbohydrates can be broken down to provide a source of usable chemical energy for cells.
what's the difference between aerobic and anaerobic cellular respiration
Answer:
aerobic uses o2 and anaerobic doesn't
Explanation:
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In fruit flies, straight wings are dominant and curly wings are recessive. What will the generations look like? Assume that Mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply.
The P generation has all straight wings.
The P generation has straight wings and curly wings.
The F1 generation has all straight wings.
The F1 generation has all curly wings.
The F1 generation has straight wings and curly wings.
The F2 generation has all straight wings.
The F2 generation has straight wings and curly wings.
Answer:
B,C,G trust
Explanation:
edge 2020
Fruit flies when crossed produce the F1 generation with straight wings, and the F2 generation with straight and curly wings as the P generation had straight wings and curly wings. Thus, options B, C, and G are correct.
What is Mendel's cross?Mendel crossed plants to produce the F1 and F2 (filial) generations that involve the dominant and recessive alleles. The different phenotypic and genotypic ratios were predicted by the cross.
The crosses are attached to the image below.
The parent generation in fruit flies are purebred dominant and recessive = WW and ww
When they are crossed produces, F1 generation with offsprings with straight wings (Ww). Now the gametes of F1 are crossed to produce 16 offsprings with ratios as,
Phenotype ratio = 3 :1
Therefore, options B, C, and G are correct. Straight-winged flies will produce straight wings in F1 and both straight and curly wings in F2.
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- Why does a male bird displays his colorful feathers? (1 point)
O to increase the success rate of asexual reproduction
to increase the gestation period
to release gametes into his surroundings
O to attract a mate
Answer: To attract a Mate
Explanation: In competition, males use feather color to warn potential rivals that they occupy a piece of territory. When it's time to mate, male birds show off their plumage to attract a mate. In experiments, female birds prefer males with more fanciful feathers, or brighter colors.
Which of the following is considered a carbon sink?
the ocean
the Amazon rainforest
Titusville, PA
the desert
which of the following is water habitat??
a ocean
b river
c lake
d pound
Answer:
The answer is a(ocean)
Which statement best explains why this process results in weathering?
Answer:
Water expands when freezes
During the light dependent reaction,_____ is oxidized to form oxygen. During the light independent reaction, _____
Is reduced to form glucose
Answer:
In the light-dependent reactions, which take place at the thylakoid membrane, chlorophyll absorbs energy from sunlight and then converts it into chemical energy with the use of water. The light-dependent reactions release oxygen as a byproduct as water is broken apart.
Which characteristic of mitochondria supports this theory of development
Answer:
both contain DNA molecules
Explanation:
(50 points) Which structures produce a fluid to protect the body in the first line of defense? Select four options.
A. hair
B. stomach
C. mouth
D. eyes
E. skin
Answer: The correct answer is skin,eyes, mouth, stomach.
Answer:
b,c,d,e
Explanation:
How is carbon recycled through the processes of cellular respiration and photosynthesis?
A. the glucose made by plants is consumed by animals, while the carbon dioxide made by animals is taken in by plants
B. the glucose made by animals is consumed by plants, while the carbon dioxide made by plants is taken in by animals
C. the oxygen made by plants is taken in by animals
D. humans give water to their plants which is needed for photosynthesis to occur.
Answer:
a
Explanation:
The law of conservation of mass states that matter cannot be created nor
Destroyed
Rearranged
Transferred
Changed
Answer: A
Explanation:
diversity increases the chances that individuals will possess favorable traits needed to survive changing environmental conditions
Answer:
True
Explanation:
When we have a narrow gene pool for our offspring that narrows down the favorable traits that the offspring can have. This can lead to the offspring having more traits that are not so good in its family tree and leave it not suited for a given environment. On the other hand, if the diversity is large it will lead to more offspring having more favorable traits and more adaptation to their environment.
Just by looking at the guinea pig you would be able to tell if its genotype
were HH or Hh.
False
True
Answer:
False
Explanation:
I just did it on the Ed puzzle and out false and it was right. Good luck!
The genotype of an organism must therefore be homozygous recessive if it exhibits a recessive characteristic in its phenotype. Examples: If we come across a white guinea, its genotype should be “bb”.
What is the genotype of the guinea?A phenotype with juvenile hairlessness, weak skin, and age-dependent lung emphysema has been identified. The three genotypes may be distinguished, and the characteristic exhibits autosomal co-dominant inheritance.
The dominant allele H in guinea codes for the trait of having hair, whereas the allele H codes for the trait of not having any hair.
The guinea with the black coat is homozygous for the dominant allele if all of his or her progeny have black coats (BB). Heterozygous hybrids occur when guinea with black coats produce offspring that are half black coat color and half white coat color (Bb).
Therefore, it is false that the guinea you would be able to tell if its genotype were HH or Hh.
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Question 3 of 5
Which two particles are found in an atom's nucleus?
Answer:
protons and neutrons.
Explanation:
