Answer:
B
D
C
A
Explanation:
Digestion begins in the mouth with the process of chewing also known as mastication. Saliva in the mouth mixes with the food. saliva contains amylose. This breaks down sugar into smaller units of dextrins and maltose.
In the small intestine, the pancreas releases pancreatic juice which breaks down dextrins into smaller units.
the cells in the small intestine helps to transport the digested nutrients to the blood stream
Undigested food goes to the large intestine and eliminated in the stool
The difference in the chromosome arrangement during meiosis in the metaphase plate can lead to greater genetic diversity in a population. Explain your answer
Answer:
independent assortment
Explanation:
The independent assortment of chromosomes refers to the process by which pairs of homologous chromosomes are randomly separated during meiosis. In metaphase I, pairs of homologous chromosomes line up along the center of the cell at the metaphase plate, and subsequently segregate at anaphase I. For example, in humans, there are 8,324,608 different gametic combinations that can result from meiosis (i.e., 23 chromosome pairs >> 2²³ = 8,324, 608 gametic combinations). In consequence, it is almost impossible that two gametes have the same combination of chromosomes after meiosis, thereby this process increases the genetic variation in the population.
Which statement best compares pioneer species with climax communities?
A. Both are involved with stages of succession, but climax communities are the beginning and pioneer species are the end result.
B. Both are involved with stages of succession, but pioneer species are the beginning and climax communities are the end result.
C. The appearance of each indicates that the number of species in the area is increasing.
D. The appearance of each indicates that the number of species in the area is decreasing.
Answer:
B. Both are involved with stages of succession, but pioneer species are the beginning and climax communities are the end result.
Explanation:
I Just took the quiz
Hope this helps! <333
༼ つ ◕_◕ ༽つ
"Enzymes are like scissors , cutting up food to get absorbed into the body"
The test tube that contained cream+ lipase+ bile contains all components necessary for optimum fat digestion.
What are fats?Fats are lipid molecules of animal origin which usually are on solid form.
Fats are hydrophobic and serve as large energy stores in the body of animals.
The enzymes involved in fat digestion are known as lipases.
During fat digestion, They are first emulisified by bile before action by lipases.
Cream contains fats and are first emulsified before action by lipases.
Therefore, the test tube that contained all components necessary for optimum fat digestion is the one that contains cream+ lipase+ bile.
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Answer:
The test tube that contained cream+ lipase+ bile contains all components necessary for optimum fat digestion.
Explanation:
I am pretty sure i am sorry if i am wrong
Which of the following events would decrease competition for resources in an ecosystem?
A- a fire has killed off a portion of the vegetation
B- a drought reduces the amount of water available to an ecosystem
C- a disease reduces the population of rabbits in a grassland area
D- many offspring are produced in a single year
Answer:
C. A disease reduces the population of rabbits in a grassland area
Explanation:
If a disease reduces the size of a rabbit population, there will be a decreased amount of competition for resources.
Less rabbits means that there will be less competition, since there will be more food available.
For example, there would be less competition in a rabbit population of 10 rabbits compared to one of 20 rabbits. This is because there are less rabbits competing for food.
So, the correct answer is C. A disease reduces the population of rabbits in a grassland area
The events that would bring decrease competition for resources in an ecosystem is C. A disease reduces the population of rabbits in a grassland area.
What is an an ecosystem?An ecosystem can be regarded as geographic area, consisting of organism as well as weather.
There is usually competition in an eco system for food and other resources however, disease can reduces the population which in turn reduces completion.
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Ms. King's class is planning an experiment to find out the average number of sunny days per week this October for their city.
Which of the following is a homeostatic response when the human body is fighting an infection?
Select one:
Negative feedback producing more antibodies in the blood.
Positive feedback releasing more enzymes into the blood.
Negative feedback increasing body temperature.
Positive feedback increasing heart rate.
Explanation:
The immune response contributes to homeostasis by helping to fight off infection and heal after infection or trauma. During an infection, molecules called pyrogens are released, which alert the brain to increase the temperature of the body, causing a fever
The homeostatic response when the human body is fighting an infection is negative feedback, increasing body temperature; that is the third option, as increasing body temperature helps to inhibit the growth and replication of pathogens and also enhances the immune response.
What is homeostasis in a fever?When the body is fighting an infection, it triggers a complex set of responses to try to restore homeostasis and overcome the infection. One of these responses is the activation of the immune system, which produces various cells and molecules to fight off the invading pathogens.
One of the most important homeostatic responses during an infection is the increase in body temperature, which is known as fever. The body's thermostat, which is located in the hypothalamus of the brain, is set to a normal temperature of around 37°C (98 °F). However, during an infection, the body may raise its temperature to 38°C (100.4°F) or higher.
Hence, the homeostatic response when the human body is fighting an infection is negative feedback, increasing body temperature; that is the third option.
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What reproduces by binary fission?
A. mammals
B. reptiles
C. fish
D. bacteria
which of the following structures in a plant cell is responsible for the production of food
Answer:
chloroplastExplanation:
Chloroplasts are specialized organelles found only in plants and some types of algae. These organelles carry out the process of photosynthesis, which turns water, carbon dioxide, and light energy into nutrients from which the plant can obtain energy. There can be over one hundred chloroplasts in certain plant cells.
Chloroplasts are disk-shaped organelles that are surrounded by a double membrane. The outer membrane forms the external surface of the chloroplast and is relatively permeable to small molecules, allowing substances entry into the organelle. The inner membrane lies just beneath the outer membrane and is less permeable to external substances.
Between the outer and inner membrane is a thin intermembrane space that is about 10-20 nanometers wide. The center of the chloroplast that is enclosed by the double membrane is a fluid matrix called the stroma (you can think of this like the cytoplasm of the chloroplast).
Within the stroma, there are many structures called thylakoids, which look like flattened disks. Thylakoids are stacked on top of one another in vascular plants in stacks called grand. Thylakoids have a high concentration of chlorophyll and carotenoids, which are pigments that capture light energy from the sun. The molecule chlorophyll is also what gives plants their green color.
Are individuals with a variation of this trait more successful at reproducing than others?
Answer:
There is no picture shown, however, if the variation benefits the organism and helps them strive then the answer would be yes.
[0.01]Ethan began making a model to show the processes which resulted in the formation of oceans.
Sea floor
spreading
Earth's
plates meet
?
Which of the following would be the next step in the process?
Crust is broken down
Earth's crust moves
O Earth's plates meet
O sea floor spreading
20 Points plz help
Researchers determine the population of phytoplankton in an area of the ocean is significantly decreased compared
to the previous year. What can they conclude from this observation? (1 point)
The plankton as a carbon sink will be less than expected, but the plankton as a carbon source will
be greater than expected.
The plankton as a carbon sink and as a carbon source in the area will be less than expected.
The plankton as a carbon sink will be greater than expected, but the plankton as a carbon source
will be less than expected.
O The plankton as a carbon sink and as a carbon source in the area will be greater than expected.
This information might be used to draw the conclusion that there will be fewer plankton in the region than is typical both as a carbon source and sink, hence B is the appropriate response to this question.
What is phytoplankton?The kind of organisms that live in watery habitats are known as phytoplankton.
These species are autotrophic in nature and are the producers of this ecosystem. These creatures share a characteristic with terrestrial plants in that they both contain chlorophyll.
Therefore, if the phytoplankton population falls in the coming year, it means that the region's carbon supply and sink will be less than anticipated.
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Ozone layer removed how would it effect temp
Answer:
lower temperatures
Explanation:
Ozone generates heat in the stratosphere, both by absorbing the sun's ultraviolet radiation and by absorbing upwelling infrared radiation from the lower atmosphere (troposphere). Consequently, decreased ozone in the stratosphere results in lower temperatures.
Hope this helps!
Does anyone know this question!?
Answer:
B. Analogous structure
Explanation:
The wings of a bat and a butterfly perform similar function. They are believe to have evolved differently from different ancestors, however, they perform the same function.
Such structures are referred to as Analogous structures.
Analogous structure like the wing of butterfly and bat appear similar and perform similar function. They have evolved separately to become adapted to perform similar function.
What is the most important part of the cell after the Nucleus?
I think its the cell membrane.
The technology in the picture produces which energy conversion?
Quo
27
O A. Chemical energy to kinetic energy
O B. Kinetic energy to electrical energy
C. Thermal energy to kinetic energy
D. Light energy to electrical energy
Answer: B. Kinetic energy to electrical energy
Explanation:
The picture above depicts a hydro-electric power station where flowing water is used to generate electricity. It works by directing water to push against turbines which then turn and generate electricity through a generator connected to the turbines.
It is therefore converting the kinetic (motion) energy of the water to electrical energy that is generated by the generator.
Among dogs, short hair is dominant to long hair and dark coat color is dominant to white (albino) coat color. Assume that these two coat traits are caused by independently segregating gene pairs. For each of the crosses given below, write the most probable genotype (or genotypes if more than one answer is possible) for the parents. It is important that you select a realistic symbol set and define each symbol below.
Parental Phenotypes Phenotypes of Offspring
Short Long Short Long
Dark Dark Albino Albino
(a) dark, short × dark, long 26 24 0 0
(b) albino, short × albino, short 0 0 102 33
(c) dark, short × albino, short 16 0 16 0
(d) dark, short × dark, short 175 67 61 21
Assume that for cross (d), you were interested in determining whether fur color follows a 3:1 ratio. Set up (but do not complete the calculations) a Chi-square test for these data [fur color in cross (d)].
Complete question:
Among dogs, short hair is dominant to long hair and dark coat color is dominant to white (albino) coat color. Assume that these two coat traits are caused by independently segregating gene pairs. For each of the crosses given below, write the most probable genotype (or genotypes if more than one answer is possible) for the parents. It is important that you select a realistic symbol set and define each symbol below.
Parental Phenotypes Phenotypes of Offspring
Short Long Short Long
Dark Dark Albino Albino
(a) dark, short × dark, long 26 24 0 0
(b) albino, short × albino, short 0 0 102 33
(c) dark, short × albino, short 16 0 16 0
(d) dark, short × dark, short 175 67 61 21
Assume that for cross (d), you were interested in determining whether fur color follows a 3:1 ratio. Set up (but do not complete the calculations) a Chi-square test for these data [fur color in cross (d)].
Answer:
(a) DDSs x DDss
DDSs x Ddss
(b) ddSs x ddSs
(c) ddSS x DdSS
ddSs x DdSS
ddSS x DdSs
(d) DdSs x DdSs
-------------------------------------------
Chi square = X² = ∑ ((O-E)²/E) = ((242 - 243)² / 243) + ((82 - 81)² /81) = 0.0164
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
What do you think happens to a wave’s energy below the surface?
Answer:
wave power is greater
Explanation:
deep water waves meaning that the depth of the water is greater the wave length
What does the area beneath a velocity-time graph represent?
The average speed
The average velocity
The distance travelled
What causes mutation in gene?
Answer: . A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses
Explanation:
Based on the discussion in your text, which of the following strategies would effectively
reduce prejudice between groups?
Do the patterns of interactions between organisms, such as competition and predation, change when they occur in different ecosystems
Yes, there is change when they occur in different ecosystems because each ecosystem contains a different set of abiotic and biotic features that interact with each other.
What is competition?Competition is defined as the struggle for survival that exists between two similar organisms in an ecosystem where one who gains survives and the one that loses dies.
Predation is defined as the feeding interaction that exist between organisms whereby the one organism, the predator, kills and eats another organism, its prey.
The patterns of interaction between organisms such as competition and predation would change because each ecosystem contains a different set of abiotic and biotic features that interact with each other.
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I dont understand what it means. Please help, and if you can give some examples on what im supposed to do that will be great :)
According to the information, we have to draw two branches from Cephalopoda to classificate new orders. Also, we have to draw one branch from each order to mention their common names.
How to organizate the information?
To organizate the information in a good way, we have to identify the brach of Mollusks and then, we have to understand how is the organization of each classification.
We have to follow the instructions, so we have to draw three branches from Mollusks to classificate Cephalopoda, Gastropoda and Bivalve. Once we did that, we must to draw two branches from Cephalopoda to classificate new orders (Octopoda and Teuthida). Finally, we have to draw one branch from each one to mention their common names.
Note: This question is incomplete because there is some information missing. Here is the complete information.
Graph attached
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What makes the phenomenon of moon phases difficult to see or imagine?
Answer:
Lunar Phases.
Explanation:
Lunar phases are created by changing angles of the earth, the moon, and the sun, as the moon orbits the earth.
Describe the process of spermatogensis
1. Which image shows a virus that can infect
the human body?
Answer: c
Explanation:
a is mitochondria which is part of the cell
b is the cell itself
c is the virus
d is a nerve
ATP is used by the
a.muscles
b.entire body
c.organs
Answer:
a.muscles
Explanation:
ATP is used in the muscles
What is species evenness?
a. The distribution of species throughout a habitat
b. The number of different populations in a community
c. The relative abundance of species in a community
The relative abundance of species in a community is known as species evenness. Therefore, option C is correct.
What is species evenness?Species evenness refers to the measure of the relative abundance of different species within a community or ecosystem. It describes the balance of the distribution of individuals among the different species present in a particular area.
For example, a community with high species evenness would have similar numbers of individuals in each species, while a community with low species evenness would have a few dominant species with many individuals and many less abundant species with fewer individuals.
Species evenness is often used in conjunction with species richness, which refers to the total number of different species present in a community, to provide a more complete picture of the biodiversity of an area. Thus, option C is correct.
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Bunnies: Black fur is dominant to white fur. Use the letter “B” and “b” to answer the following questions.
6. Complete the punnet square to show the possible offspring of a true-breeding black rabbit and a true-breeding white rabbit. (true breeding parents are homozygous, know this for the test!)
7. What ratio would you see in the F1 genotypes?
8. What ratio would you see in the F1 phenotypes?
9. If you crossed two of these offspring, what would this generation be called?
10. Cross two offspring from the F1 generation. (Complete your Punnett square on scratch paper)
a. genotypes:
b. phenotypes:
Answer:
they are all 100% heterogenous ,,their genotype is Bb,, their prototype is black fur
Explanation:
look at my demonstration
Regarding living organisms, what is the most distinctive characteristic of a habitat?
Answer:
They refer to one species or individual.
Reproduction of same specie is the most distinctive characteristic of a habitat
Reproduction is the ability of an organism to produce offsprings of its same kind of which when that offspring grows and mature produces newer offspring in turn. Other characteristics such as Movement , Respiration, Nutrition, irritability, Growth,Excretion,Death can be experienced by all living things in thier spoecific ways. The only distinctive characteristic is Reproduction because every habitat will contain specific type of organism that will have features to adapt to that habitat.
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Experts and above ONLY
To answer this u have to be expert, ace or genius level
25 PTS PLEASE HELP QUICK
(not related to the question but please add thx i want friends)
OK THX THE QUESTION IS BELOW
Answer:
Honestly I know this is unrelated to the images but I'd like to share with you.
Explanation:
Just have an open mind. (also the first image you put in the question is unable to open)