Answer:
Direction
Explanation:
Answer:
Direction
Explanation:
pls mark brainliest
What are the chemical signals that trigger increased respiration
Answer:
Sources of these signals include mechanoreceptors in the exercising limbs; the arterial chemoreceptors, which can sense breath-by-breath oscillations in the partial pressure of carbon dioxide; and thermal receptors, because body temperature rises as metabolism increases.
Explanation:
What is the runoff pollution, and what causes it?
Answer:
Polluted agricultural runoff is a major source of water pollution globally. Agricultural runoff is primarily caused by melted snow or rainfall. It is, in essence, water that does not stay in the soil but instead flows on the surface and carries a variety of polluting elements.
Explanation:
The lovely people at google
Assume that three loci, each with two alleles (A and a, B and b, C and c), determine the differences in height between two homozygous strains of a plant. These genes are additive and equal in their effects on plant height. One strain (aa bb cc) is 10 cm in height. The other strain (AA BB CC) is 22 cm in height. The two strains are crossed, and the resulting F1 are interbred to produce F2 progeny. Give the phenotypes and the expected proportions of the F2 progeny.
Explanation:
In the given question, the trihybrid cross has been provided for the height trait and it is provided that recessive alleles (aabbcc) contribute 10 cm whereas dominant allele (AABBCC) contribute 22cm.
The height contributed by each dominant allele (A+A+B+B+C+C)= 22cm
The height contributed by each recessive allele (a+a+b+b+c+c)= 10 cm
The dominant genotype is 12 cm taller than recessive genotype which indicates that dominant allele contributes 2 cm.
In trihybrid cross-64 genotype will be formed with these dominant allele based on which the height of the plant will be determined.
The genotype with dominant allele (Height) and F2 progeny are
0 (10cm) - 1/64
1 (12cm)- 6/64
2 (14cm)- 15/64
3 (16 cm)- 20/64
4 (18cm)- 15/64
5 (20 cm)- 6/64
6 (22 cm)- 1/64
Answer:
Given,
aabbcc = 10 cm
AABBCC = 22 cm
The genes are additive which means that each dominant allele will contribute to the overall height. The base minimum height is 10 cm (no dominant allele) and the maximum height is 22 cm (all six dominant alleles). Thus, six dominant alleles contribute 12 cm of height to the base height, which means that each dominant allele adds 2 cm of height.
When, aabbcc X AABBCC :
AaBbCc ( F1 )
When, AaBbCc X AaBbCc :
7 types of phenotype is possible. They are:
6 dominant alleles = 22 cm
5 dominant alleles = 20 cm
4 dominant alleles = 18 cm
3 dominant alleles = 16 cm
2 dominant alleles = 14 cm
1 dominant allele = 12 cm
0 dominant allele = 10 cm
They will be in the ratio = 1 : 6 : 15 : 20 : 15 : 6 : 1 as given by the ratio of additive effect governing three loci. The intermediate phenotype ( 16 cm ) will be maximum in number and the numbers will decrease as we move to the extremes.
Many organisms depend on the land as a food source. Seasons can affect the amount of food that is available to these organisms. How would a long, cold winter most likely affect a population of deer?
The deer population will decrease.
The deer population will increase.
The deer population will remain almost the same.
The deer population will rebound the next year.
The deer population decreasing will most likely affect a population of deer.
What is a Population?This can be defined as the number of organisms in a given area over a period of time.
Winter season is characterized by unavailability of plants for grazing due to the harsh weather condition which will lead to starvation and a decrease in the deer population.
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A long, cold winter is likely to decrease the population of deer due to reduced food availability and increased stress and mortality rates.
Why cold winter affects deer population?A long, cold winter is likely to have a negative effect on the population of deer. This is because during a long, cold winter, the availability of food for deer can become scarce, especially if the winter is severe and there is a lot of snow on the ground. The snow can make it difficult for deer to access their food sources, such as grasses and shrubs. This can lead to malnutrition and starvation in some individuals, which can cause a decline in the population.
Additionally, a long, cold winter can also affect the reproductive success of deer. If the winter is too harsh, it can cause stress and illness in pregnant does, leading to fewer fawns being born in the spring. This can also contribute to a decline in the deer population.
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briefly explain the mode of nutrition
Explanation:
There are 2 forms of nutrition/, autotrophic, and heterotrophic,
autotrophic= makes its food from raw materials,
heterotrophic= consumed nutrition, in mammals..
Which resource is a non-renewable resources? A.fresh water B.Maple trees C.Solar Energy B.Precious metal
Answer:
Precious Metal, bc nature will not renew it and there's just a limited amount on any given planet.
Technically true for the sum of all water on the planet too, but fresh water gets renewed by cyclical processes in nature.
and solar energy (and trees for that matter) are also just renewed from our earthly perspective of space and time. stars do nuclear fusion, and this is a one-way process, single use basically.
so nothing is truly renewable, but we can't use up some things and get new supply for any given time, at least in time spans we can grasp.
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As the amount of water vapor in the air increases,
Answer:
what's the full question
Answer:
it would be, " relative humidity increases"
A graph with a calibration curve, linear regression and extrapolation was drawn up from your lab results. What were the two types of data that were being compared on the graph? (In other words what was on the X and Y axis) What does this graph tell you about the water sample you collected?
Answer:
X is the concentration of the substance being measured and Y is the response from the instrument that is being used to measure
Explanation:
A calibration curve is the plot of known concentration of substances where x is the increasing known concentration and Y is the response, typically "absorption" taken from the instrument that is used for measuring. This curve is then used to find out the concentration of the unknown substance by using it's absorbance and comparing it with the calibration curve. For example:
Concentrations and absorbance readings are as follows
0.5mg/mL=10 nm
1.0mg/mL=15nm
1.5mg/mL=20nm
2.0mg/mL=25nm
This data is plotted on a calibration curve. Next we measure the unknown substance the absorption is 20nm. We can suggest that the concentration is 1.5 mg/mL. If there are readings that fall inbetwen values then the formulat to calculate the right concentration would be y = mx + b, where m is the slope and b is the y-intercept.
Linear regression uses the modification of the slope formula y= a + bx to best see how the data of the water samples would fit on the slope of the calibration curve. X is the independent variable , b is the slope of the line and a is the y-intercept.
Extrapolation would be the action of calculating data that are outside the calibration curve, assuming the trend would continue.
How did Scientist find the human gene that makes insulin
Answer:
Recombinant DNA is a technology scientists developed that made it possible to insert a human gene into the genetic material of a common bacterium. This “recombinant” micro-organism could now produce the protein encoded by the human gene. Scientists build the human insulin gene in the laboratory.
Explanation:
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The apple tree receives 1000kJ of light from the Sun, but only uses 500kJ. Of this, only 250kJ are stored in the tree to be transferred through the food chain.
a)Calculate the efficiency of the tree (2)
b)State the ways in which the remaining energy has been transferred out the of the food chain (3)
a) [tex]\frac{250}{1000}[/tex] × [tex]100[/tex] [tex]= 25[/tex]%
b) Respiration, decomposition
i need help in biology both questions!!
Answer:
4. a) Monoculture
5. c) Fossil fuels
Explanation:
4. a) Mono culture is the practice of cultivating one crop on a given land. Completely opposite to multiple cropping.
5. c) Fossil fuels provide energy to industries as industries get energy from mining. Therefore fossil fuels is an logical answer.
There are two species of freshwater shrimp that are introduced to a pond. The first species, Caridina cantonensis, is brightly colored with red and white stripes. The second species, Caridina multidentata, is more mottled drab in coloration. Fish have an easier time finding and eating Caridina cantonensis due to their bright colors. When each of these species reproduce they produce about 100 offspring, but only 30% Caridina cantonensis offspring survive to reproductive age, while 75% Caridina multidentata offspring survive to reproductive age.
A. In this situation what is natural selection selecting for?
B. In this situation what is natural selection selecting against?
C. How do you predict this population will evolve?
D. Identify how each of the listed conditions from the above scenario that influence natural selection. Population must have variation. Some variations are favorable More offspring are produced than survive Those that survive have favorable traits Differential reproductive success
Answer:
A. Colour of the freshwater shrimp
B. Predator fish problem
C. Based on the number of offsprings that has survived
D. Differential reproductive success
Explanation:
A. The freshwater shrimp species C. cantonensis is brightly coloured which is easy to find by fish whereas C. multidentata is mottled drab in colour which can hide in the environment. Therefore the natural selection will select for the mottled drab of the shrimp.
B. The mottled drab colour of the shrimp will be selected against the predator species which feeds on the shrimp population as the predator species can find the brightly coloured species easily but the mottled drab colour will not be found.
C. The population is evolving can be identified based on the number of population found in that area as 75% of C. multidentata species reach reproductive stage while only 30% of C. cantonensis reach the reproductive rate.
D. The condition will be known as Differential reproductive success.
The image shows the femur bone of the leg and part of skull . Identify the various bone markings in the image
Answer: A fossa is a shadow depression in the bones of the skull. A firearm is a hole in a bone. In the image of the skull, the hole at the base is the opening through which the spinal cord passes. A tubercle is a small nodualr projection, which is visible in the image of the femur bone of the leg.
Explanation: Edmentum
which of the following is an example of mechanical weathering
Answer:
Examples of mechanical weathering include frost and salt wedging, unloading and exfoliation, water and wind abrasion, impacts and collisions, and biological actions. All of these processes break rocks into smaller pieces without changing the physical composition of the rock.
Explanation:
Mechanical weathering involves mechanical processes that break up a rock: for example, ice freezing and expanding in cracks in the rock; tree roots growing in similar cracks; expansion and contraction of rock in areas with high daytime and low nighttime temperatures; cracking of rocks in forest fires, and so forth.
Draw a starch structure
Explanation:
I miss not sure if it's right
Which is the largest group of mollusksWhich is the largest group of mollusks?
Answer:
gastropods
Explanation:
The largest group is the gastropods
Answer:
gastropods
Explanation:
Choose the true statements about amyloid fibrils. 3 options are correct:a) An amyloid fibril typically forms from aggregates of misfolded peptides resulting from frameshift mutations. b) An amyloid fibril is stabilized by hydrophobic interactions between aromatic residues. c) Soluble proteins that misfold and form amyloid fibrils become insoluble. d) Because most newly synthesized proteins fold correctly, the accumulation of misfolded proteins (or fragments) tends to occur slowly, thus explaining the slow onset of disease. e) Proteins that convert to an amyloid fibril structure tend to have low solubility in their native form.
Answer:
The correct answers are: b) "An amyloid fibril is stabilized by hydrophobic interactions between aromatic residues", c) "Soluble proteins that misfold and form amyloid fibrils become insoluble", and d) "Because most newly synthesized proteins fold correctly, the accumulation of misfolded proteins (or fragments) tends to occur slowly, thus explaining the slow onset of disease".
Explanation:
Amyloid fibrils are protein aggregates that can cause pathological conditions, for instance, they are found in brain tissue in people with Alzheimer disease. This disease, and other relates diseases, have a slow onset because most newly synthesized proteins fold correctly and the protein aggregates are made up misfolded proteins. This newly synthesized proteins are soluble, but once the proteins are misfolded, they form amyloid fibrils that are insoluble. The amyloid fibrils are stabilized by hydrophobic interactions between aromatic residues, which are formed within the complex of insoluble misfolded proteins.
Two boats are operating near each other. One of these boats must take early and substantial action to keep well away from the other boat. Which is the boat that must take action?
Answer:
The boat is referred as the give way boat
Explanation:
The give way boat is the one who is meant to take any action and must take early and substantial action to keep well away from the other boat.while the other boat is meant to sail on the sea normally. This is used in the prevention of accidents on the sea as a result
Of the two boats trying to maneuver their way at the same time.
Which of the following are examples of an inherited trait for plants? (Check ALL correct answer.)
a) The type of fruit it makes
b) How tall it grows
c) If it receives enough rain
d) The color of its flowers
Answer:
A,b,d
Explanation: These are traits
Which phrases accurately describe this rock? Check all that apply.
1.formed underground
2.randomly arranged grains
3.formed through sedimentation
4.formed by extreme heat and pressure
5.layers that tend to split apart along bands
Explanation:
4. formed by extreme heat and pressure
1. formed underground
Answer: Formed underground
Formed by extreme heat and pressure
Explanation:
the following are the size of shoes 7,3,8,4,6,7
find the
1 mean
2 mode
Answer:
Mean is 28.3
Mode is 7
Explanation:
What is the process responsible for gamete formation?
Answer: Formation of Gametes
Both the male and female gametes are formed during a process of cellular reproduction called meiosis. During meiosis, the DNA is only replicated or copied one time. However, the cells are divided into four separate cells.
Explanation:
2. Name the vessels that arise from the aortic arch
Answer:
Three vessels come out of the aortic arch: the brachiocephalic artery, the left common carotid artery, and the left subclavian artery.
Explanation:
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The ______________ system consists of the hypothalamus, pituitary, amygdala and hippocampus. They are located in the brain just under the cerebrum.
A) endocrine
B) limbic
C) nervous
D) skeletal
Answer:
The answer is B or limbic.
Explanation:
"The amygdala is the emotion center of the brain, while the hippocampus plays an essential role in the formation of new memories about past experiences."
Answer: LIMBIC
Explanation: I JUST DID IT.
state what scientists might do to successfully combat bacteria that are resistant to vancomycin
Answer:
Probably make a new medicine.
which statement best explains the difference the difference in growth among the plants
Answer:
Where are the statements
Yersinia pestis, the organism that causes the bubonic plague, led to the deaths of approximately 75 million people is the 1300's. This was known as the Black Death. Which type of organism caused the bubonic plague?
Answer:
Yersinia pests
Explanation:
it is a bacterium. its vectors is infected flea from an animal. The plague can also results from contact with contaminated fluid from dead infected animal from bubonic plague.
when the flea bites, the bacterium enters the blood stream and through the lymphatic systems it finds it way into the lymph nodes of the armpit and pubic region.
it localized in the nodes leading to swelling, enlarged nodes-buboe, with painful sensation.
chills, high fever, seizures, are some of the symptoms.
proper hygiene is the best preventive methods.
Please help me I’m so confused
Answer:
I think wave A might have a lower pitch
Explanation:
Maybe since it has a lower frequency it has a lower pitch.
Answer:
Wave A has a lower pitch.
Incineration is a way to control pollution. which is an example of an incinerator
Answer: For example, hospitals and research facilities generally use incinerators to dispose of biological tissues, blood-contaminated materials, and other medical wastes such as disposable hypodermic needles and tubing.
Explanation:
Answer:
afterbuner
Explanation:
Calculate pH a decrease of one unit on the pH scale means a solution is ten times more acidic. a decrease of two units means the solution is 100 times more acidic. how much more acidic is acid precipitation( pH = 4.0) than pure water (PH= 7.0 )
Answer:
Each unit of decrease has an exponential increase. So if you are looking at an item that has a Ph of 4 and water has a Ph of 7 —-that means it is 10 to the 3rd power more acidic or 1000 times more acidic than water.
Explanation:
A decrease of one unit on the pH scale means a solution is ten times more acidic; a decrease of two units means the solution is 100 times more acidic; so pH 4 means the solution is thousands of times more acidic than normal water.
What is the effect of pH on the cell?The pH scale shows the pH from 1 to 14, where pH 7 is taken as neutral, below which the solution is more acidic, and above which the solution is more basic. The pH has an important role in the organism as it regulates the blood and maintains enzymatic function.
Hence, a decrease of one unit on the pH scale means a solution is ten times more acidic; a decrease of two units means the solution is 100 times more acidic; so pH 4 means the solution is thousands of times more acidic than normal water.
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