Answer:
all cells are surrounded by a cell membrane
The higher the __________ content of a DNA, the ________ the melting temperature, and the ________ the ionic strength, the ________ the melting temperature. A:T; higher; higher; lower G:C; lower; higher; lower G:C; higher; lower; lower A:T; lower; lower; higher G:C; higher; higher; lower
Answer:
G:C, higher, higher,
Explanation:
G:C have 3 Hydrogen Bonds, A:T only 2. So, G:C bind stronger to each other, so higer ionic strengh and higher melting temperature.
*the last gap and the first gap seem to be the same question
explain the mechanism that results in a shoot bending towards light
Answer: Auxin is a plant growth hormone that aids in the regulation of shoot development. However, when the amount of sunshine fluctuates, auxin is broken down on the stem's sunny side. Because the dark side has a larger concentration of auxin, the plant cells on that side develop faster and bend toward the light.
Explanation:
54:56
The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea plant
that has green pods. Green pods are the dominant trait. The flowchart is missing the labels that describe the traits.
A
D
C
E
In which squares should the phrase "Green pods" appear?
O A and D only
OB and E only
O A, C, and D only
O A, B, C, D, and E
The inheritance pattern of pods color in pea plants is complete dominance. H0m0zyg0us dominant and heter0zyg0us plants have green pods. Option C) A, C, and D.
What is complete dominance?When the dominant allele completely masks the recessive allele, we talk about complete dominance.
This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.
When you cross an individual who is h0m0zyg0us dominant with an individual who is h0m0zyg0us recessive, the whole progeny among the first generation -F1- will express the dominant phenotype since they are heter0zyg0us for this trait.
However, if you let individuals from the F1 cross with each other, the second generation -F2- will be composed of individuals expressing the dominant and the recessive phenotypes. This is because some individuals are h0m0zyg0us recessive and can express the recessive trait.
According to this information, and based on the attached flowchart, we can assume that,
Parentals ⇒ A (gray square) and B (white square)F1 ⇒ C (gray square)F2 ⇒ D (gray square) and E (white square)Since the F1 is completely gray, we can assume this color identifies the dominant phenotype (green pods).
The cross was performed between plants with yellow and green pods, so they must be h0m0zyg0us individuals (dominant and recessive) and the whole F1 must be heter0zyg0us for the trait. So,
A ⇒ h0m0zyg0us dominant because it is gray ⇒ green pods
B ⇒ h0m0zyg0us recessive because it is white ⇒ yellow pods
C ⇒ heter0zyg0us because it is gray and the product of A x B ⇒ green pods
Now, the F2 is composed of D and E which represent plants with yellow and green pods. This means that there are h0m0zyg0us recessive individuals, and the recessive trait -yellow pods- can be expressed again among the second generation.
D ⇒ h0m0zyg0us dominant and heter0zyg0us ⇒ green pods (gray square)
E ⇒ h0m0zyg0us recessive ⇒ yellow pods (white square)
Now, the phrase "Green pods" should appear i all gray squares. These are A, C, and D.
Option C is correct. A, C, and D only.
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Answer:
C) A, C, and D.
Explanation:
which part of the cell membrane does not mix with water
Answer:
FATTY ACIDS
Explanation:
plase help my and thanks . ammm
From the illustration, it can be said that the age of the rock layer is the same in the four locations of index fossil 1.
Age of fossilIt is a measure of how long a material has been fossilized.
Thus, if a rock layer contains a fossil and another similar rock layer does not have the fossil, one can conclude that the ages of the rock layers are different.
Only index fossil 1 is found in all the four locations as shown in the image. Hence, one can as well infer that the rock layers in all these four locations are of the same age.
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When a person sees a doctor about a respiratory illness, the doctor will want to determine if the sickness is in the upper respiratory tract or the lower respiratory tract. The starting point for the lower respiratory system is the trachea.
Which structures are part of the upper respiratory system? Select three options.
the larynx
the bronchus
the alveoli
the lungs
the pharynx
The structures which are part of the upper respiratory system include the following:
The pharynxThe larynxThe bronchus.What is Respiratory system?This is the system which is involved in the gaseous exchange of organisms and consists of organs such as lungs etc.
The parts mentioned above are found in the upper respiratory tract of most animals.
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How does the body obtain more glucose, if it is needed for cell respiration?
Through the process of cellular respiration, the energy in food is changed into energy that can be used by the body's cells. Initially, the sugars in the food you eat are digested into the simple sugar glucose, a . The varying glucose concentration affects the rate of cellular respiration as all living cells require both glucose and oxygen for their proper functioning. If the cell has a low level of glucose, then it cannot produce the energy -ATP molecules.
monosaccharide means any of the class of sugars (e.g., glucose) that cannot be hydrolyzed to give a simpler sugar.
When a glacier retreats, it leaves barren rock, no soil or plants. What is this an example of?
Primary succession
Secondary succession
Both
re-introduction
Answer:
a primary succession because it helps to retreats glacier water ..
Participating in cardiovascular exercise in the target heart rate zone will result in:.
Participating in cardiovascular exercise in the target heart rate zone will result in the reduction of the risk of heart disease, stroke, and diabetes.
What is the target heart rate zone?The target heart rate is typically represented as a percentage of your maximum safe heart rate, typically between 50 and 85 percent.
The highest rate is determined by deducting your age from 220. Therefore, the maximum heart rate for a 50-year-old is 220 minus 50, or 170 beats per minute.
Your ability to complete daily tasks more easily can be increased by increasing your cardiovascular endurance. Additionally, it can lower your risk of developing conditions including diabetes, heart disease, and stroke.
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Which statements describe how traits are inherited
Answer: Traits are inherited when the genes from parents are passed off to their offspring.
Explanation:
The genetic combination for the trait is the __________ and the physical characteristic that you see is the _________.
Answer:
1. Genotype 2. Phenotype
Explanation:
Which of these best matches an object in space with its characteristic?
ganymede → orbits the sun
inner planet → gaseous in
composition
outer planet → many moons
Meteorite → comet which hits earths surface
HELP ME IM ALMOST DONE
Answer:
option B
should be right answer for the question
Answer: B
Explanation:
When a protein denatures, which type of bonding is effected?
Answer:
When a protein is denatured, secondary and tertiary structures are altered but the peptide bonds of the primary structure between the amino acids are left intact. Since all structural levels of the protein determine its function, the protein can no longer perform its function once it has been denatured.A protein becomes denatured when its normal shape gets deformed because some of the hydrogen bonds are broken. Weak hydrogen bonds break when too much heat is applied or when they are exposed to an acid (like citric acid from lemon juice).
The energy required for organisms to respond to the environment comes from.
The energy required for organisms to respond to the environment comes from sun.
How do producer organisms obtain energy?The Sun is our star and it represents the most important source of energy for all organisms in a given ecosystem (both consumers and producers).
Producers are organisms at the bottom of the food pyramid that can synthesize biomass by using light energy from the Sun.
In conclusion, the energy required for organisms to respond to the environment primarily comes from the sun.
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in this phase of mitosis the cells DNA is replicated so that both daughter cells will have
Answer:
the same.
Explanation:
It is because mitosis is a cell of DNA and if the both daughter mitosis's DNA will have the same.
Which of these is most likely to result in evolution?
Question 1 options:
A large population of fish loses a few individuals
A plant has two alleles for yellow flower color
One phenotype of moths has better camouflage than the others
A stable, unchanging environment
One phenotype of moths has better camouflage than the others
How is an
anatomical
adaptation
defined?
A. a system present within the
organism that allows it to perform a
biochemical reaction
B. a feature of the organism's body
that helps it survive and reproduce
C. a response from the organism that
changes it's behavior to help it survive
and reproduce
Anatomical adaptations involve every change in the organism's external structure. Option B. A feature of the organism's body that helps it survive and reproduce.
What is an anatomical adaptation?Anatomical adaptations are changes in the external structure of the organisms that help them survive and reproduce in a certain environment.
These adaptations allow the organisms
to camouflage if necessary (to scape from a predator or to hunt their prey, for instance), to protect themselves by imitating dangerous species' colors and shapes, to develop special structures needed to feed and move in that specific environment.
There are other two types of adaptations apart from anatomical ones. These are physiological and behavioral adaptations.
Options
A. a system present within the organism that allows it to perform a biochemical reaction ⇒ This is a physiological adaptation
B. a feature of the organism's body that helps it survive and reproduce ⇒ This is an anatomical adaptation
C. a response from the organism that changes it's behavior to help it survive and reproduce ⇒ This is a behavioral adaptation
The correct option is B. a feature of the organism's body that helps it survive and reproduce
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Which structure controls what enters and leaves the cell?
A) cell membrane
B mitochondria
c) cell wall
D nucleus
The "Cell Membrane" controls what enters and exits the cell and thus protects the cell.
Answer: A: The cell membrane
Explanation: Hope this helps!
HELPPPP SCIENCEEE!!!!!!!
Answer:
The biodiversity garden are rich in variety of flora which can include native Plant species that provode food and habitat to native pollinator.
Coal is a fossil fuel that is used to produce electricity. Which of these statements best describes a cost of coal mining on the region around the mines? (4 points)
It gets less electricity.
It becomes depleted of essential minerals.
Its groundwater is contaminated.
Its rivers and streams become dry.
The statement that best describes a cost of coal mining on the region around the mines is that Its groundwater is contaminated.
What is coal mining?A coal mine is a mine from which coal ore or coal minerals are mined.
Mining is activity of removing solid valuables from the earth or the activity that extracts or undermines.
Mining is a process that releases pollutants into the environment, therefore, the statement that best describes a cost of coal mining on the region around the mines is that Its groundwater is contaminated.
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When did the high tide enter the nisqually estuary for the first time in over 100 years?
During the fall of 2009, the high tide entered the nisqually estuary for the first time in over 100 years.
What is Nisqually estuary?
This is formed when the freshwater of the Nisqually River meets the salt water of Puget Sound.
In the fall of 2009, the high tide entered it for the first time in nearly a century.
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How can water from a small stream on a mountain north carolina affect an estuary that is hundreds of miles away ?
Water from a small stream on a mountain in North Carolina can affect an estuary that is hundreds of miles away so that pollution can accumulate and damage the estuary from the small stream.
What is an estuary and why is it important?The importance of estuaries is very relevant. Estuaries provide food and habitat to a very wide range of living beings with a decisive role in the marine food chain, where we can highlight several species of fish with commercial value.
With this information, we can conclude that water from a small stream on a mountain in North Carolina can affect an estuary that is hundreds of miles away so that pollution can accumulate and damage the estuary from the small stream.
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If you use pyrotechnic visual distress signals, how many unexpired vdss must you carry on board your vessel?.
If you use visual pyrotechnic distress signals, 6 pairs of unexpired vdss must be taken on board your vessel.
How many visual pyrotechnic distress signals to carry on the vessels?In coastal areas, up to 20 miles from the coast, the mandatory set of six flares must consist of two red star manual flares, two red star rockets with parachutes and two floating orange smoke (smoke) flares.
With this information, we can conclude that If you use visual pyrotechnic distress signals, 6 pairs of unexpired vdss must be taken on board your vessel.
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Select the correct answer.
Which is the correct definition of a large animal?
O A.
an animal that lives outdoors
OB.
an animal used for food, farming, or agriculture
OC. an animal of a large size that needs daily care
OD. an animal that needs large farms
Answer:
OC is the correct answer
The extracellular material of a tissue is called the:.
Answer:
The extracellular material of a tissue is called the Matrix
You select seeds from the largest, tastiest watermelons from your garden every year and use them to grow the next year's fruit. over many years, how would this affect the variability of the watermelon genes?
a.
there would be less variability in the genes of the watermelon plants.
b.
there would only be genes for seedless watermelons.
c.
it would increase variability in the genes of the watermelon plants.
d.
the genes for smaller watermelons would increase.
reset next
There would be less variability in the genes of the watermelon plants and is denoted as option A.
What is Variability?
This is defined as the difference between organisms which is caused by genetic or environmental factors.
Using the seeds from the largest, tastiest watermelons will reduce variability over time because these characteristics will become dominant.
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13.04 building muscles explain muscles
Answer:
Muscle is a soft tissue found in both animals and humans. The cells of the muscles comprise protein filaments of actin and myosin that slide past one another, which produces contraction and changes both the length and the shape of the cell.
Muscles function by producing force and motion and are primarily responsible for:
1. Locomotion.
2. Maintaining and changing body posture.
3. Circulation of blood cells throughout the body.
4.Movement of internal organs, such as the contraction of the heart and the movement of food through the digestive system via peristalsis.
There are three types of muscles
•Skeletal or striated muscles
•Cardiac muscles
•Smooth muscles
Based on the muscle action, muscles are further classified into:
•Voluntary muscles
•Involuntary muscles
If an organism were to die in an environment that had no saprotrophs or detritivores, what would you expect to see if you observed the area 2 weeks later?
A. There would be nothing left, it will have completely decomposed.
B. The body would remain, and be just as it was when it died except for weathering.
C. There will be no difference as compared to an area that has saprotrophs and detritivores.
D. The body would be decomposing at about half the normal speed.
The body would remain, and be just as it was when it died except for weathering expect to see if you observed the area 2 weeks later. Thus, the correct option is B.
What is detritivores?Detritivores is defined as an organism that feeds on dead and deteriorating organic stuff (such as an earthworm or a fungus).
Decomposers that live on or in dead organic matter secrete enzymes and release nutrients into the ecosystem are known as saprotrophs. Fungi are an example.
The deceased organisms will remain the same without detrivores and saprotrophs, with the exception of weathering, which is taken out by air, water, or other agents.
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Which of these most likely explains why the bacterial population stopped growing?
Bacterial population needs an optimum environment to survive. The bacterial population stopped growing because bacteria competed for the nutrients and when the nutrients were consumed, they died.
What are the optimum conditions required for bacterial growth?Bacteria require optimum conditions and full of nutrients to survive. It can include the following:
Oxygen.pH.Temperature.Light.Nutrients.Osmotic pressure.Atmospheric pressure.Moisture, etc.Thus, the bacterial population stopped growing as they did not get optimum condition as the nutrients got consumed.
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