Answer:
Your Answer is True. True
Cross a white feathered chicken with a checkered chicken (checkered chicken, checkered chicken!). Show the genotypic and phenotypic ratios.
Answer:
The correct answer would be -
genotype - 50% WB and 50% WW
phenotype - 50% checkered chicken and 50% white-feathered chicken.
Explanation:
In the chickens, the checkered trait occurs due to the codominance type of inheritance as when two different alleles of color Black feather and White feather allele present together they both show their presence and express as checkered chicken.
White feather chicken: WW
Black feather chicken: BB
Checkered chicken: WB
Cross = WW and WB
gametes: W, W and W, B
Punnett square:
W W
W WW WW
B WB WB
Thus, The correct answer would be -
genotype - 50% WB and 50% WW
phenotype - 50% checkered chicken and 50% white-feathered chicken.
Answer:
The correct answer would be -
genotype - 50% WB and 50% WW
phenotype - 50% checkered chicken and 50% white-feathered chicken.
Explanation:
How would decreasing the amount of water in blood affect blood pressure
Answer:
Blood pressure would decrease.
Explanation:
If you don't drink enough water it's bad for your body since water is a source of living, and if you decrease the amount of water in your blood the blood pressure would decrease.
which is the main chemical substance found in khat?
Answer:
The principal active components in khat are cathinone and cathine (norpseudoephedrine) (see also Drug profile on synthetic cathinones). Chewing khat releases these substances into the saliva; they are rapidly absorbed and eliminated.
Explanation:
Could someone pls help me with this ???????
I don’t understand
Water. Water is responsible for the formation of landforms like rivers, valleys, canyons, and deltas.
What are Landforms?
Landforms are natural features of the Earth's surface, such as valleys, mountains, plains, plateaus, hills, and coasts. They are formed by geological processes, such as erosion, volcanic activity, tectonic movements, and deposition. Landforms can vary in size from tiny ripples in the sand to large mountain ranges.
Wind can carry sediment and erode existing landforms, but it is water that is mainly responsible for the formation of landforms. Plants and animals can influence the formation of landforms, but not to the same extent as water.
Hence, Option B is correct.
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explain the effects of the use of antibodies in the control of a disease
i will give brainly
Answer:
this website make summery about antibodies https://www.mblbio.com/bio/g/support/method/antibody-role.html#:~:text=Antibodies%20have%20three%20main%20functions,holes%20in%20the%20cell%20wall).
If you are tired or just cannot seem to understand the material,
a. Read the chapter again while studying for thee. Take a break and return to the chapter later
test
b. Ask a friend for their notes on the chapter d. All of these
Please select the best answer from the choices provided
Answer:
I think its D
Explanation:
All of the answers are good because you can relax for a second which will help you stress way less and if you ask for notes you then can have another veiw of the question, and if you read the chapter again you might go over something that you missed the first time and understand better
An earthworm breaks down nutrients and fertilizer in the soil, providing plants with nutrients they need to survive. What does the role of the earthworm play in
this scenario?
O A Scavenger
B Producer
OC. Autotroph
OD. Decomposer
HURRY PLZ
Answer:
D. decomposer
Explanation: decomposers break down things
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The length of a DNA double helix increases by 0.34 nm (nanometres) for every pair of nucleotides. The total number of nucleotides in a human body cell is
[tex]1.2 \times {10}^{10} [/tex]
Calculate the total length of a double helix in a human body cell (answer to be given in meters)
Answer:
If you multiple 1.02 × 2 = 2.04 meter, it is the total length of DNA in human diploid cells.
Explanation:
Plz help me well mark brainliest if correct!!....
Answer:
The answer is D (last one)
Explanation:
1. (a) List the 5 conservation related conventions. (b) Which one of these conventions is more embracing? Give reasons for your answer in relation to ecology
The five conservation related conventions are:
1. Convention on Biological Diversity
2. Convention on International Trade in Endangered Species of Wild Fauna and Flora
3. Convention on Migratory Species
4. Ramsar Convention on Wetlands
5. Convention on the Conservation of Antarctic Marine Living Resources
The Convention on Biological Diversity is the most embracing of these conventions, as it provides the most comprehensive coverage of conservation related issues. Its focus is on the conservation of biodiversity, sustainable use of resources, and the fair and equitable sharing of benefits arising from the use of genetic resources. Additionally, it provides strategies and commitments to ensure that exploitation of living resources is done with sustainability and responsibility, bringing it into line with the principles and goals of ecological conservation.
what organism in this food web contains the most energy
Answer: Your answer is Grass
Explanation: The organism in this food web that contains the most energy is the grass. The grass is a producer, and producers get their energy directly from the sun. When the consumers eat the producers or other consumers, more than ten percent of the energy stored is lost each time.
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7. The fossil record contains fossils from
many geologic ages. Fossils enable
scientists to piece together what ancient
organisms looked like. Which of these
answers best describes how fossils in
the fossil recomhare classified?
A by ages and physical similarities
B by whether the fossil contains hard
or soft tissues
C by size and the type of rock in which
they are found
D. by similarities in their DNA and in the
minerals they contain
Answer:
a
Explanation:by ages and physical similarities
Female African elephants are, on average, 7 - 9 feet tall. What is the upper end of this range in centimeters?
Note that 1 in. = 2.54 cm, 100 cm = 1 meter and 12 in. = 1 ft.
The individuals of this population mate randomly and never move (i.e., there is no migration into or out of the population), and mutation also does not occur. Each couple has two children and the parents die after having their second child, so the population size does not change. Answer the questions about this population after the parents have had both children and are dead. Which is true about the next generation of this population?
A. The genotypic frequencies will remain the same as they were in the parent population.
B. The genotypic frequencies will be double of what they were in the parent population.
C. The allele frequencies will be double what they were in the parent population.
D. The allele frequencies will remain the same as they were in the parent population.
E. Both genotypic and allele frequencies will remain the same as they were in the parent population.
Answer:
D. The allele frequencies will remain the same as they were in the parent population.
Explanation:
In population genetics, the Hardy-Weinberg equilibrium predicts that genotype and allele frequencies will remain constant from one generation to the next. The Hardy-Weinberg principle has five major assumptions: random mating, no mutation, no gene flow, infinite population size, and no selection. In a population, genetic change can be measured as a change in genotype frequencies or allele frequencies, but a type of change does not necessarily imply a change in the other. In this case, the frequency of alleles in the pool of male and female gametes (sperm and eggs, respectively) that meet to make the next generation will be the same, but genotype frequencies change from one generation to the next.
Which of these body systems has cells that attach to each other to form a leak-proof barrier?
Select one:
Urinary system.
Reproductive system.
Respiratory system.
Endocrine system.
Answer:
Epithelial cells are tightly packed, and this lets them act as barriers to the movement of fluids and potentially harmful microbes. Often, the cells are joined by specialized junctions that hold them tightly together to reduce leaks.
Explanation:
Plant and animal cells are both eukaryotic cells. However, the functions of the different cells require that they have different
organelles. What are the specialized structures found in plant cells, but NOT animal cells? Select ALL that apply.
A)
cell wall
B)
centrioles
C)
chloroplasts
D)
cell membrane
E)
central vacuole
Answer:
A, C, E
Explanation:
Plant cells have specialized structures which are absent in animal cells. These include cell wall, chloroplasts, and central vacuole. Thus, correct options are A, C, and E.
What is a Plant Cell?Plant cell is the basic unit of all plants. Plant cells have unique organelles which are absent in animal cells. These organelles are responsible for specific functions which are important for the normal functioning of plant cell.
Plant cells have a unique cell wall which is absent in animal cells. Cell wall is made up of cellulose which is responsible for providing strength to the cells. Plant cells also have a chloroplast which contain a special pigment called chlorophyll. This pigment is responsible for photosynthesis. This organelle is absent in animal cells.
A large vacuole is also found in plant cells which is absent in animal cells. The vacuole contains reserved food material in the form of starch which is used in the unfavorable condition.
Therefore, the correct options are A, C, and E.
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Select the correct answer.
Which of the following conditions might prevent a dead body from going through the normal stages of lividity?
O A. muscular state
O B. weather conditions
O C.poisoning
OD.state of rigor mortis
O E.insect activity
Answer:
D. state of rigor mortis
According to cell theory, which are made of cells? Check all that apply.
Answer:
According to cell theory, all living organisms are made of cells. This includes:
Plants
Animals
Fungi
Protists (single-celled eukaryotic organisms)
Bacteria (single-celled prokaryotic organisms)
All of the above should be selected.
A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity. Explain the three levels of biodiversity and the concerns associated with loss of diversity at each level.
B) Species and genetic diversity can be very beneficial to humans. Describe three ecosystem services that nature provides to humans.
Answer:
Biodiversity or Biological diversity is a term that describes the variety of living beings on earth. It is described as degree of variation of life. Biological diversity encompasses microorganism, plants, animals and ecosystems such as coral reefs, forests, rainforests, deserts etc.
-In biodiversity, each species, no matter how big or small has an important role to play in ecosystem. It represents the wealth of biological resources available to us. It’s all about the sustaining the natural area made up of community of plants, animals, and other living things that is begin reduced at a steady rate as we plan human activities that is being reduced by habitat destruction.
Explanation:
A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity.
B) Ecosystem services provided by biodiversity include pollination, pest control, and nutrient cycling.
A) The three levels of biodiversity are genetic diversity, species diversity, and ecosystem diversity. Genetic diversity refers to the variation in genes within a species, which allows populations to adapt and survive in changing environments. Concerns associated with the loss of genetic diversity include reduced adaptability to environmental changes and increased vulnerability to diseases.
Species diversity refers to the variety of different species within an ecosystem. Loss of species diversity can disrupt ecological balance, impact food webs, and lead to the extinction of keystone species. It can also result in the loss of potential sources for medicines, agricultural crops, and other valuable resources.
Ecosystem diversity refers to the variety of different ecosystems in a region. Loss of ecosystem diversity can result in habitat loss, fragmentation, and degradation, leading to the decline or loss of specialized species adapted to specific habitats. It can also impact the provision of ecosystem services, such as water purification, climate regulation, and nutrient cycling.
B) Species and genetic diversity provide several ecosystem services to humans. One example is pollination, where diverse species of pollinators, such as bees, butterflies, and birds, ensure the reproduction of flowering plants and agricultural crops. Another ecosystem service is pest control, where diverse predator species help regulate populations of agricultural pests.
Ecosystems also provide the service of nutrient cycling, where diverse decomposers, such as fungi and bacteria, break down organic matter and recycle nutrients back into the soil. This process is crucial for maintaining soil fertility and supporting plant growth. Lastly, diverse ecosystems contribute to climate regulation by absorbing and storing carbon dioxide, a greenhouse gas that contributes to climate change.
Overall, species and genetic diversity support the functioning and resilience of ecosystems, benefiting human well-being by providing essential services like pollination, pest control, nutrient cycling, and climate regulation. Protecting and conserving biodiversity is essential for maintaining these services and ensuring a sustainable future.
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Match each of the "4Rs" to the statement that best describes it.
Answer:
47
Explanation:
Yes it is 690.00 hoepnthsi hekls
5. Gastrointestinal motility includes -------------------- which causes ------------------ and ------------, which causes ----------------------. A. Segmentation waves; food to move backward and forward; peristalsis; food to move along the tract distally. B. Peristalsis waves; food to move backward and forward; segmentation; food to move along the tract distally. C. Rippling waves; food to move backward and forward; segmentation; food to move along the tract distally. D. Propulsion waves food to move backward and forward; peristalsis; food to move along the tract distally. E. None of the above
Answer: The correct option is A (Segmentation waves; food to move backward and forward; peristalsis; food to move along the tract distally).
Explanation:
Gastrointestinal motility is defined as the different activities carried out by the smooth muscles of the tract which Involves it's contraction and relaxation to bring about the movement of ingested food through the gut for absorbing nutrients, water,electrolytes and eliminating waste products. These movements can be divided into two namely:
--> Mixing Contractions: These contractions are also called the SEGMENTATION WAVES. When a portion of the small intestine becomes distended with chyme, stretching of the intestinal wall elicits localised concentric contraction spaced at interval along the intestine causing segmentation of the small intestine. These contraction causes the movement of chyme BACKWARD and FORWARD which allows greater mixing with the secretions of the intestines.
--> Propulsive Contractions: These contractions are also called peristaltic waves. Bands of muscles in the walls of the gastrointestinal tract contract and relax alternately to push each bolus of food downwards slowly. This process is known as PERISTALSIS. This occurs in all regions of the tract causing the movement of food towards the anus (distal direction).
Therefore, gastrointestinal motility includes Segmentation waves which causes food to move backward and forward, and peristalsis; which causes food to move along the tract distally.
Write a summary paragraph discussing this experiment and the results. Use the following questions to help guide the content of your paragraph.
Submit your recorded observations for each step.
Step 1: Burning Candle - record the mass and write your observations
Step 2: Cooling Candle - record the mass and write your observations
Step 3: Tearing paper - record your observations
Step 4: Wet paper - record your observations
Step 5: Burning pieces of paper - record your observations
Step 6: Salt and water in test tube - record your observations
Step 7: Baking soda and vinegar - record your observations
Answer the following questions.
What is the difference between a physical change and a chemical change?
What kind of change occurred in each test? What evidence do you have to support your decision? Be brief, but be sure to defend your conclusion with data.
Answer and ill give brainly
Here the physical changes are seen in the burning candle, cooling candle, tearing paper, wet paper, salt, and water in the test tube, while the chemical reactions are involved in the burning of the paper and the mixing of the vinegar with soda.
What are the physical and chemical changes?The physical change is the change in form, such as when the candle is burned or cooled down, then the wax that is formed has the same properties as the candle, or the paper pieces after being torn have the same properties. Chemical changes involve the formation of new things, such as when paper is burnt, this produces ash with a different chemical nature, and when the vinegar and soda is mixed, it produces a different product.
Hence, here the physical changes are seen in the burning candle, cooling candle, tearing paper, wet paper, salt, and water in the test tube, while the chemical reactions are involved in the burning of the paper and the mixing of the vinegar with soda.
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Identify two factors that
can trigger mutations
one way it can mutate is if it spreads
2_2 Breathing
Using complete sentences, explain how the muscular, skeletal, respiratory and circulatory systems work together to get oxygen from outside your body into your lungs.
Explanation:
Your digestive system absorbs water and nutrients from the food you eat. Your circulatory system carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin.
how might a sudden rise in CO2 in the blood affect the gas exchange process ?
Answer:
process is faster
Explanation:
when CO2 accumulates in the blood it causes homeostatic imbalance eg it causes a fall in blood pH therefore gaseous exchange takes place faster to rid the body of this gas maintaining balance in the body
Atoms are built around a ------- containing both -------- and-----------------
Answer:
Atoms are built around a nucleus containing both protons and neutrons
electrons are around the nucleus
Answer:
Atoms are built around a nucleus containing both protons and electrons
Explanation:
If you know the structure of an atom, it has a middle part called the nucleus; it consists of protons and neutrons meanwhile, electrons orbit around the outside. :)
The process that shows how the plant grow lives and dies is called
Answer:
morphogenesis
Explanation:
The developmental process is known as morphogenesis. This process that follows a plant throughout its entire life and shows how the plant shapes itself through the development of cells, tissues, and organs throughout its life. These developments are dependent on many factors such as the genetics of the plant as well as the environmental conditions that the plant is exposed to. All of this affects the type of organs that the plant develops such as leaves, flowers, and fruits.
Why will individuals have brown eyes rather than a blue eyes?
Question 6 options:
a)
Brown eyes is a mutation.
b)
Blue eyes is recessive.
c)
Blue eyes is dominant.
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The figure below demonstrates the relationship between photosynthesis and respiration. What products at B are reactants for C?
a. 6H2O + C6H12O6
b. C6H12O6 + 6O2
c. 6CO2 + 6H2O
d. C6H12O6 + 6CO2
[tex]\huge{ \mathfrak{ \underline{ Answer} \: \: ✓ }}[/tex]
Correct option is B.[tex]C_6H_12O_6 + 6O_2[/tex]
Because, the products formed after photosynthesis are Glucose and Oxygen, which again reacts during respiration to release Energy.
_____________________________
[tex]\mathrm{ \#TeeNForeveR}[/tex]
Answer:
b. C6H12O6 + 6O2
Explanation:
That process is called respiration where glucose reacts with oxygen to form water, carbondioxide and ATP ( energy )