An energy pyramid shows the amount of
available at each feeding level in an ecosystem
Answer:
TRUEExplanation:
Q1:
A male child with wavy hair is born to a mother with curly hair and a father with straight hair.
Which type of inheritance best explains the child’s hair type?
A
codominance because the child’s hair type is a blend of the parental hair types
B
codominance because both the male and the female carry the gene for hair type
C
incomplete dominance because the child’s hair type is a blend of the parental hair types
D
incomplete dominance because both the male and the female carry the gene for hair type
Odpowiedź:
A) codominance because the child’s hair type is a blend of the parental hair types.
Wyjaśnienie:
AA - curly hair
aa - straight hair
Aa - qualities AA + qualities aa = Wavy hair
The type of inheritance that best explains the child’s hair type is codominance because the child’s hair type is a blend of the parental hair types. The correct option is A.
What is inheritance?Inheritance is the transfer of genes and characteristics from the parent generation to the offspring. It is done in sexual reproduction. The traits of the mother and the father are transferred into the child.
Codominance is a type of inheritance in which the traits of the father and the mother get blended and a third different type of trait is shown in the offspring.
Here, the father has straight hair, and the mother has wavy hair, but the male child shows the hair is wavy hair. This shows the process of codominance in the child.
AA - curly hair
aa - straight hair
Aa - qualities AA + qualities aa = Wavy hair.
Thus, the correct option is A. codominance because the child’s hair type is a blend of the parental hair types.
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What is the lowest starting height from which the skater can start to successfully complete the ramp? Use the data from your chosen ramp design from the “Testing” section of the lab. Be sure to include if your results support your hypothesis.
Answer:
The lowest starting height the skater can be so that he complete the loop is 6 meters.
Explanation:
Answer:
mine was 8 but it might be 6
Explanation:
When fewer visual pigment molecules are available to absorb light (for example, when a person has a color weakness), which of the following nervous system responses occurs? A.Fewer signals of the weakly perceived color are sent to the brain. B.A normal number of signals of the weakly perceived color is sent to the brain, but each signal is less intense. C.The signals for the weakly perceived color are sent to the brain via other, more plentiful, pigments. D.Light molecules stimulate the cells to make additional pigment.
Answer:
A.Fewer signals of the weakly perceived color are sent to the brain.
Explanation: the brain is the seat of nervous coordination where nerve cells sends signals for processing. An individual with a weak color means a fewer signal for color production is sent to the brain this is due to low pigment it had hence fewer pigment molecule are available to absorb light. If the pigment is high the signal sent will also be high.
What is a lenticular galaxy? A. It is a type of galaxy that is an intermediate between a spiral galaxy and elliptical galaxy. B. It is an intermediate stage of evolution between an elliptical galaxy and spiral galaxy. C. It is a type of irregular galaxy that resembles a malformed ellipse. D. It is a galaxy stripped of gas and dust that contains young, bright stars.
Answer:
A. It is a type of galaxy that is an intermediate between a spiral galaxy and elliptical galaxy
Explanation:
22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Citrullus lanatus). The explosive rind is recessive and causes watermelons to burst when cut. Non-bitter watermelons are a result of the recessive genotype (susu). The geneticist wishes to determine if the genes assort independently. She performs a testcross between a bitter/nonexplosive hybrid and a plant homozygous recessive for both traits. The following offspring are produced:
Bitter/nonexplosive 88
Bitter/explosive 62
Non-bitter/non-explosive 62
Non-bitter/explosive 81
Calculate the chi-square value and also the chi-square of independence for the null hypothesis that the two genes assort independently. Calculate using a chi-square test and the chi-square test of independence. Give your answer to the nearest tenth.
Answer:
See the answer below
Explanation:
Using the formula for calculating Chi square ([tex]X^2[/tex]):
[tex]X^2[/tex] = [tex]\frac{(O - E)^2}{E}[/tex] where O = observed frequency and E = expected frequency.
The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.
For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.
Hence, expected frequencies are calculated as:
phenotype (1) = 9/16 x 293 = 164.81
phenotype (2) = 3/16 x 293 = 54.94
phenotype (3) = 3/16 x 293 = 54.94
phenotype (4) = 1/16 x 293 = 18.31
The [tex]X^2[/tex] is calculated thus:
Phenotype O E [tex]X^2[/tex]
1 88 164.81 [tex]\frac{(88 - 164.81)^2}{164.81}[/tex] = 35.80
2 62 54.94 [tex]\frac{(62 - 54.94)^2}{54.94}[/tex] = 0.91
3 62 54.94 [tex]\frac{(62 - 54.94)^2}{54.94}[/tex] = 0.91
4 81 18.31 [tex]\frac{(81 - 18.31)^2}{18.31}[/tex] = 214.64
Total [tex]X^2[/tex] = 35.80 + 0.91 + 0.91 + 214.64 = 252.26
To the nearest tenth = 252
Degree of freedom = n - 1 = 4- 1 = 3
[tex]X^2[/tex] tabulated = 7.815
The calculated [tex]X^2[/tex] exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently.
Scientists who study evolution at or below the species level are most likely___.
Microevolutionalists
Convolutionalists
Macroevolutionalists
Ans. Microevolutionalists
Scientists who study evolution at or below the species level are most likely micro evolutionists.
What is the definition of microevolution?Microevolution is defined as changes in the frequency of a gene in a population. These are subtle changes that can occur in very short periods of time, and may not be visible to a casual observer.
What is microevolution for example?Pesticide resistance, herbicide resistance, and antibiotic resistance are all examples of microevolution by natural selection. The enterococci bacteria, shown here, have evolved a resistance to several kinds of antibiotics.
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A DNA molecule is made up of building blocks known as nucleotides. Each nucleotide consists of deoxyribose, a phosphate group, and one of the chemical bases. The nucleotides join together to form a
, which form the backbone of a DNA strand.
Answer:
polynucleotide
Explanation:
according to edmentum notes, "The nucleotides join together to form a polynucleotide. Polynucleotides form the backbone of a DNA strand.'
Nucleotides are the building units of the DNA or RNA molecule. DNA is composed of deoxyribose, a phosphate group, and one of the chemical bases that make up each nucleotide.
What is a nucleotide?It is a monomer of DNA or RNA. It is composed of a sugar (deoxyribose in DNA ribose in RNA), a phosphate group, and one of the chemical bases that make up each nucleotide.
The backbone of DNA is formed by which components?It is formed of sugar and phosphate only.
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how does blood volume affect blood pressure
Answer:
Changes in blood volume affect arterial pressure by changing cardiac output. An increase in blood volume increases central venous pressure. This increases right atrial pressure, right ventricular end-diastolic pressure and volume.
Explanation:
is the fungus more closely related to a plant or animal?
plant
animal
Answer:
animal is the correct answer.
Explanation:
The fungus is more closely related to animals than to plants because of the following reasons:
fungus are heterotrophs that mean they are not able to make their food like animals.The fungus is closely related to animals that have signified defined by molecular phylogenetic analyses.Fungi have chitin in their cell wall like animals.Explain how changes in Earth's systems affect the growth of life on earth
Answer:
hope it is help for you please mark brinlist
Answer:
The topic we were given is to explain how changes in Earth’s systems affect the growth of life on Earth. We will talk about three main things that are a part of this statement which will be; how life affects the climate system, how species can survive, and how do we know about this.
In our introduction we talked about how life affects the climate system. In very short terms, we can conclude that life affects the composition of the atmosphere. We can also conclude that it affects the climate as well because if we apply what we learned in the labs about how different materials absorb heat at different rates then we will see that when you have different life forms that are taking in and releasing gases such as carbon dioxide, methane and oxygen, that they too even have different rates at which they do it. Which backs up the point that it changes the composition of things. So when we have climate changes, not only are the species, but also our ecosystems are. They respond to these scenarios by adapting, migrating or even reducing their own population. Some examples in our own lives would be droughts, heat increasing, and even insect outbreaks. Which all link to climate changes, and even wildfires that occur. Some concerns are that we could have declining water supplies, health impacts in cities due to heat, reduced agricultural yields, and finally erosion and flooding in coastal areas are also very big concerns for us.
How can our species even survive? You may ask,well I will tell you how. Three simple things: move, die, adapt. It's sad to think of what we could be doing to our own ecosystems and animals. The thing is that as time goes on and the more climate changes there may not even be much left. Most animals will either adapt to the climate or move higher trying to escape the hotter weather. Scientists have been making assumptions that maybe it's changing too fast for them to do anything. Because the truth is that why would you want to die voluntarily. I can see why with older animals, but why with younger ones? They could want to run, but the thing is that they don't have a choice. Extinction of living things is one common fear. One day we could all go poof with any word being said, and that should be frightening to people. Adaptation could be the only way we brave through it.
The other part of this is how do we even know about climate change exactly? Over the years we have had many physical and biological changes that are confirming our theory about climate change. The retreat of glaciers, the melting of them and the ice is one big give away as well. Also the intensification of rainfall events, changing in the timing of the plants that are leafing out, range of some species that are shifting, and finally the arrival of migrant birds in springs. We also can see that human activity is also a reason for it changing as well as other things. There is evidence that we can not deny or ignore.
In conclusion, how life affects the climate system, how species can survive, and how we know about this, all play apart in the big story called climate change. It bears the truth that one day will not be pretty or just a concept, it will be utter reality. Until then there is another tomorrow, another week, another month and another year. See you on the flip side of things! Pure truth will one day be exposed, so will the mind of people and things.
Explanation:
I gathered facts from well known articles! Its a short writing as well i hope.
what is the relationship between peripheral resistance and blood pressure ? between blood viscosity and blood pressure
Answer:
Peripheral vascular resistance (systemic vascular resistance, SVR) is the resistance in the circulatory system that is used to create blood pressure, the flow of blood and is also a component of cardiac function. When blood vessels constrict (vasoconstriction) this leads to an increase in SVR.
The relationship between BP and viscosity is such that, given a constant systolic BP, if blood viscosity increases, then the total peripheral resistance (TPR) will necessarily increase, thereby reducing blood flow. Conversely, when viscosity decreases, blood flow and perfusion will increase.
Natural selection acts on ___________which may result in the evolution of _____________
Answer:
Natural selection acts on individuals which may result in the evolution of populations.
Explanation:
Hope this helps!! please give brainiest!!!!!!!!!!
Wolves live and hunt together in a group called a pack. Typically, there is a leader called an alpha male or alpha female, but each member of the pack plays a special role.
This is an example of .
Answer:
is there multiple choices? i would say social hierarchy or society.
Explanation:
Answer:
D. Social Hierarchy
Explanation:
In which environment would primary succession take place? Select 2 options.
an abandoned field
a cooling lava flow
a valley under a glacier
an unused farm
a deserted mine
Answer:the answer is B and C since there is no soil or life
Explanation: explanation is up there
Answer:
B and C
Explanation: I got the answer right on my test
Orchids are flowering plants that depend on bees for pollination. A population of orchids in a rainforest has reached its carrying capacity. The size of the rainforest's bee population is a limiting factor of the orchid population. What will happen to the orchids' carrying capacity if the rainforest's bee population decreases?
A.
The carrying capacity will not change because it is a constant property of an ecosystem.
B.
The carrying capacity will decrease because the level of the limiting factor decreases.
C.
The carrying capacity will not change because it is a constant property of a species.
D.
The carrying capacity will increase because the level of the limiting factor decreases.
Answer:
b. The carrying capacity will decrease because the level of the limiting factor decreases.
Explanation:
i got it right on edmentum
Which of the following best describes the process of hydration?
Answer:
D that is, water bonds with elements in the minerals that make up rock, forming new substances.
Explanation:
hope its right!
Answer:
Water bonds with elements in the minerals that make up a rock, forming new substances.
Explanation:
you welcome
What are the ways to regulate blood pressure ?!
Answer:
Lose extra pounds and watch your waistline. Blood pressure often increases as weight increases
Exercise regularly
Eat a healthy diet
Reduce sodium in your diet
Limit the amount of alcohol you drink
Quit smoking
Cut back on caffeine
Reduce your stress
Explanation:
What is a stem cell?
Explanation:
A stem cell is a cell with the unique ability to develop into specialised cell types in the body. In the future they may be used to replace cells and tissues that have been damaged or lost due to disease.
The adult stage occurs for plants when they:
Answer:
gea
Explanation:
A summary of what grade 10 learn in biology
Answer:
cells, energy and transport, reproduction and cell division, classical genetics, molecular genetics, evolution, human body systems, ecology.
Explanation:
I looked this up and i have a older sister in grade 10, so i'm 100% sure this is right.
What are the parts is a seed
Answer:
embryo, seed coat, and cotyledon / endosperm
Explanation:
the embryo is the tiny plant, the seed coat is the outer coating, and the cotyledon / endosperm stores food for the embryo. hope this helps u!!
Answer: my answer too thus question is embryo , stored food and protective coat
Explanation: hope this helps :)
True or False. A cyclone, typhoon and hurricane are all the same type of storm.
*
Answer:
True!
Explanation:
They are the same meaning, but said in different locations.
Answer:
true
Explanation:
they are all the same thing just different names depending on where or how powerful it is
Drag each label to the correct location on the map.
Identify the types of precipitation on the map. The color scale gives the rainfall amounts in inches.
The given question is incomplete as it lacks the map which is important, however the correct answer is attached:
Answer:
The correct answer is -
Top box (green area) - moderate rain,
Middle box (sky blue area) - light rain, and
Bottom box (red area) - heavy rain.
Explanation:
As per the map and the scale presented on the map that indicates the rainfall in inches. The green area indicates that the rain fall in this area is one inch which is moderate as the the sky blue rainfall measurement is .5 inches which is half. However, the red area is the highest rainfall area in comparison to both of these which is about four inches.
On the basis of these it we can label all three boxes as per their rainfall amount that is,
Top box (green area) - moderate rain,
Middle box (sky blue area) - light rain, and
Bottom box (red area) - heavy rain.
Answer:
The person above is correct
Explanation:
i took the test and got it right. btw tysm for the help i really appreciate it!
The immunity rate is the ____________ variable. The number of people affected by the disease is the ___________ variable.
Answer: 1. independent , 2 . dependent
The immunity rate is an independent variable. The number of people affected by the disease is the dependent variable.
What is immune system?
The immune system protects our body from foreign invaders like bacteria, viruses, and fungi, and other toxins.
In general 2 types of the immune system observed in human body.
The innate immune system rapid inheritable response system consist major organs like skin, the eye's cornea, and the mucous membrane that lines the respiratory, gastrointestinal, and genitourinary tracts.
Secondly, the acquired immune system work with the innate system to make a special proteins named antibodies to protect our body from a specific invader.
Human immune system show variation in their production of immune components like cytokines play critical roles and it vary from person to person.
Hence, The immunity rate is an independent variable. The number of people affected by the disease is the dependent variable.
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Much of the Florida landscape is built upon limestone. Frequent rains seep down and erode the limestone as the rainwater travels to underground caverns or aquifers. Which of the following landforms could be created as a result of this process?
Answer:
potholes/ sinkholes. most likely sink holes. i dont have options
Explanation:
Some coral polyps within a coral reef obtain energy by
consuming plankton and small fish. Others rely on a
relationship with tiny algae. These algae live within
coral polyps. They use sunlight to make sugar for
energy. That energy is transferred to the coral polyp
Coral polyps are
Answer:
consumers
Explanation:
that's the answer
Answer:
consumer
Explanation:
I just did this test and this is definetly the answer.
Which of the following two statements describe benefits of bio technology in medicine
1. using stem cells to treat disease
2. using antibiotics to treat infection
3. diagnosing genetic diseases
4. producing antibodies such as antitoxins
5. curing diseases such as smallpox
The correct answers are 1. Using stem cells to treat disease, and 3. Diagnosing genetic diseases.
Explanation
Biotechnology is a science that covers different areas such as chemistry, biology, and technology, to improve or facilitate procedures related to living organisms by manipulating living or parts of these in areas such as agriculture, medicine, and pharmacy. In the area of medicine, biotechnology is in charge of working with DNA to improve people's health. Also, it is in charge of investigating the cells to know in depth the problems that trigger diseases or genetic problems. Another use of biotechnology in medicine is through the use of stem cells in treatments for self-renewal or regeneration of damaged tissues. So, the correct answers are 1. Using stem cells to treat disease, and 3. Diagnosing genetic diseases.
Here's the Answers, Hope this Helps
Which statement is correct about how lights travel
Answer:
1. Answer: Light can travel in a vacuum, and its speed is constant if the source is moving or stationary.
Light travels at constant speed in vacuum even if the source is moving or stationary. If the source is moving, the apparent frequency/ wavelength changes.
Which the following is not and intertidal area? A. Marsh B. Coral reef C. Rocky Shore D. Estuary
Answer:
B. Coral reef
