Three out of four of their offspring will be white when Two rabbits mate, each with one dominant gene (f) for black and one recessive gene (f) for white. Thus, the correct option is B.
What is law of dominance?A trait is represented by two contrasting factors of a gene in a heterozygous individual, while the homozygous individual has two copies of the identical factors, according to the law of dominance. As a result, the heterozygous rabbit's genotype will be Bb, whereas the homozygous recessive rabbit's genotype will be bb.
FF X ff
║
Ff (F1 generation)
║
Ff X ff (self pollination- F2 generation)
║
Ff, Ff, Ff, ff
3: 1 (black: white)
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Explain how our body systems work together to get oxygen into and around our body.
Photosynthesis is an integral part of what cycle?
Answer:
photosynthesis is a part of the global carbon cycle
What does oxygen poor blood deliver to the
lungs?
A. carbon dioxide
B. glucose
C. water
D. ATP
Answer:
A.carbon dioxide
Explanation:
oxygen poor blood means the blood is rich with Carbon dioxide
The oxygen poor blood delivers to the lungs carbon dioxide out of the body organs and cells. Thus, the correct option is A.
What is oxygen poor blood?The heart is divided into two separate pumping systems, which include the right side and the left side. The right side of the heart receives oxygen-poor blood that is deoxygenated blood from the veins and pumps it to the lungs, where the blood picks up oxygen gas from the alveoli and gets rid of carbon dioxide gas.
Deoxygenated blood has less oxygen or it is oxygen-poor and contains is carbon dioxide rich. The right heart pumps this deoxygenated blood to the lungs where it picks up additional oxygen gas.
As the blood travels through body, oxygen gas is used up, and the blood becomes oxygen poor or carbon dioxide rich. Oxygen-poor blood returns from the body to the heart by the superior vena cava and the inferior vena cava, the two main veins which bring blood back to the heart.
Therefore, the correct option is A.
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i’m stuck please help it’s due and grades are closing
Identify the leaf tissues.
a. _________
b. _________
c. _________
d. _________
Answer:
a. Vascular
b. dermal
c. ground
d. dermal
Explanation:
Vascular is the bundle of phloem and xylem.
Dermal is epidermis, so for "b." it is upper epidermis and for "d." it is lower epidermis.
Ground provide structure.
The correct identification of leaf tissues of A, B, C and D are Vascular tissue, Dermal Tissue, Ground tissue and Dermal tissue respectively.
The specialized tissues that make up plant leaves are known as leaf tissue. Photosynthesis, gas exchange and transpiration in plants are mainly carried out by the leaves. Different types of cells perform different activities in leaf tissues.
The epidermis of the leaf, which covers both the upper and lower surfaces, is the outermost layer of tissue. Through tiny pores called stomata, it regulates water loss and acts as a protective barrier.
Between the upper and lower epidermis of the leaf is a layer of tissue called the mesophyll. It is in charge of most of the photosynthesis.
The movement of water, nutrients and carbohydrates throughout the leaf and throughout the plant is carried out by vascular tissues.
Guard cells: Special cells that surround and control the opening and closing of the stomata are found in the epidermis.
The correct identification of leaf tissues of A, B, C and D are Vascular tissue, Dermal Tissue, Ground tissue and Dermal tissue respectively.
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Please I need help now !!!!!!
The Moving Man Virtual Lab Distance, placement, Spe
The moving man travels a distance of 5 m in 10 s. What was the Moving Man's speed?
Answer:
0.5m/s
The velocity is equal to the distance over time, so we divide 5 by 10
The population in South Africa is more prone to sickle cell anemia (genotype "ss"). People with genotype "ss" survive only up to 14-15 years of age. People with "SS" are prone to malaria because the parasite resides inside their RBCs. People with genotype "Ss" are resistant to malaria because the parasite cannot reside inside their RBCs, and they can live a normal life (without sickle cell anemia).What kind of evolutionary force must be operative in South Africa?
A.
Stabilizing selection
B.
Directional selection
C.
Disruptive selection
Answer:
(a) stabilizing selection
Explanation:
Sickle-cell anaemia is a recessive disorder caused by the presence of two recessive alleles "s", so the genotype is "ss". This disorder is characterized by sickle haemoglobin. In an area with malaria, heterozygous individuals "Ss" (with one dominant allele and one recessive allele) have an advantage. These individuals will have both normal and sickle haemoglobin. But pathogen that causes malaria affects only normal haemoglobin, so heterozygous individuals will have half of the haemoglobin resistant to the pathogen and those individuals are resistant to malaria.
Stabilizing selection favours heterozygotes Ss, disruptive selection favours dominant (SS) and recessive (ss) homozygotes, while directional selection favours dominant (SS) or recessive (ss) homozygotes. Since in this example, people with genotype Ss (heterozygotes) are at an advantage, then this is an example of stabilizing selection.
hope this helps:)
explain mixed cropping
Answer:
Mixed cropping is also known as inter-cropping, polyculture, or co-cultivation. It is a type of agriculture that requires planting two or more plants simultaneously in the same field, interdigitating the plants so that they grow together.
Typically a mix of legumes and cereals or tuber crops is a common practice in marginal agro-ecological environments. The mixtures can be flexibly arranged to conditions such as late or early onset of the rainy season or status of soil fertility in different fields.
Carbon dioxide enters the plant only through the roots.
A. True
B. False
Answer:
False
Explanation:
CO2 enters a plant through the stomata. Tiny pores on the surface of the leaves
Darwin saw populations of various species that seemed well-suited to their environment. What did this suggest?
Answer:
Species adapte to their environment over time.
PLEASE HELP!!!!! 40 pts!!!
Besides water, which of the following compounds are found most in sea water?
sodium bromide
sodium chloride
hydrogen chloride
magnesium chloride
Answer:
Sodium Chloride :>
Explanation:
⠀⠀Beside water Sodium Chloride ( NaCl ) is found most in seawater .
More Information :
Sodium constitutes of 1.94 % of all the constituents ,Followed by the Chloride which constitutes of 1.08% .Minerals like Potassium (K) , Iodine (I) , Magnesium are also found in seawater .Name the cavity between the nose and mouth.
A. pharynx
B. larynx
C. trachea
D. Esophagus
The cavity which separate or in between the nose and the mouth is the nasal cavity.
The nose and the mouth meet at a junction called the pharnx; option A
What is nasal cavity?The nasal cavity refers to a large, air-filled space above and behind the nose in the middle of the face. It is the cavity which divides the nose and mouth.
However, the nasal septum divides the cavity into two cavities .
The larynx is the passageway for air between the pharynx above and the trachea below.The pharynx carries air, food and fluid down from the nose and mouth.So therefore, the cavity which separate or in between the nose and the mouth is the nasal cavity.
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List the cups in order of the most hatched eggs to the least
Acid rain is liquid deposition that occurs when sulfuric and nitric acids get dissolved in rainwater and reach the ground affecting the whole ecosystem.
What is acid rain?
Acid rain refers to the liquid deposition of water drops charged with dissolved pollutive acids, like sulfuric and nitric acids.
Liquid deposition can be caused by rains (acid rain), snow, dew, or fog. During this event pollutive acids are dissolved in atmospheric water drops and are driven to the ground.
Usually, rainwater pH is about 5.6.
However, with high concentrations of acids in the environment, rainwater pH decreases.
When the the rain gets to the ground, they produce a series of chemical changes that alter the natural pH of the soil and water and have a consequent effect on ecosystems.
Day 1
Cup pH
F 8
E 7
D 6
C 5
B 4
A 3
Day 2
Cup pH
D 6
E 7
F 8
C 5
B 4
A 3
Day 3
Cup pH
E 7
D 6
F 8
C 5
B 4
A 3
Day 4
Cup pH
E 7
D 6
F 8
C 5
B 4
A 3
According to this data, we can assume that eggs need a neutral to basic pH to hatch. Acid media notoriously affects egg hatching.
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Organisms that have catalase
what are you looking for in your observations when you are looking for evidence of a reaction?
does the plant tissue that was tested contain catalase?
does the animal tissue that was tested contain catalase?
Higher vascular plants contain catalase to metabolize Hydrogen peroxide (H2O2) in mitochondria and chloroplasts.
What is catalase?Catalase is a key enzyme used by organisms to metabolize Hydrogen peroxide (H2O2), which is a reactive substance.
The animal tissues also contain catalase which they use to generate H2O and thus remove toxic H2O2.
In conclusion, higher vascular plants contain catalase to metabolize Hydrogen peroxide (H2O2) in mitochondria and chloroplasts
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Which statement accurately describes how the understanding of the Doppler effect is applied to the study of galaxies?
Please help ASAP
Write the characteristics in which porifera differ from the characteristics of animal kingdom?
Answer:
see the file attached!!
Along with insulin, amylin is a hormone that a diabetic pancreas fails to produce. It is comprised of a long chain of amino acids. It cannot cross the cell membrane, so it binds to a receptor on the cell surface to elicit an action. Which hormone class is amylin
Options:
A prostaglandin
B protein hormone
C. peptide hormone
D. steroid hormone
Answer:
Amylin is peptidal harmone. Thus, the correct option is C.
What is hormone?Hormones are the chemical messengers of the body. They make their way through your bloodstream to tissues and organs. They have a long-term effect on a variety of processes, including growth and development.
Amylin is a peptide hormone produced in tandem with insulin by the pancreatic -cell and is hence lacking in diabetics. It works as a satiety agent by inhibiting glucagon secretion and delaying stomach emptying. As a result, amylin replacement could potentially improve glycemic control in some diabetics.
Amylin is a 37-amino-acid peptide hormone released by pancreatic beta-cells in response to a food stimulation together with insulin. It is inadequate in Type 1 diabetes patients and increased in Type 2 diabetes patients in the early stages, a disease marked by hyperinsulinemia.
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Answer please quick
Answer:
animal respiration release, fossil fuel burning release, photosynthesis remove
Explanation:
also please don't cheat on an active mapnwea test. I'm going to assume this is a question from after you took the test, and you just want to confirm (so that I can answer it without feeling bad)
(if this is directly during a test I'm fairly certain it's against the rules anyway)
genetic drift simulation:
Why did you have to "restock" your bag between generations? How does this relate to genotypes and inheritance?
Why are fats a better source of energy than carbohydrates on a per carbon basis?.
Fats and carbohydrates are the macromolecules that are energy sources. Fats are a better source of energy than carbohydrates as three fatty acid molecules have energy equivalent to 16 carbons.
What are fats?Fats are the energy-providing macromolecule and are stored in the adipose tissue. They are made of fatty acids that are the source of the energy.
Fats contain the triglyceride molecule that produces fatty acids that produce the equivalent energy as the sixteen carbon molecules and hence are a more efficient source.
Therefore, fats are a better source of energy.
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18. Brayden is trying to figure out how petal shape is determined in two different roses. In the pink rose, the copies of the gene are the same as each other. In the yellow rose, the copies of the gene are different from each other. How does this affect how many types of proteins there are in each petal cell?
The pink rose has a type of protein for the petal shape on the other hand, the yellow rose has two types of protein for the petal shape feature.
What is the relation of protein with plant characteristics?Plant proteins also like other proteins, provide a variety of enzymatic, structural, and functional functions.
They also serve as storage media to suit the nutritional and development requirements of growing seedlings.
These can also responsible for coloration in plants.
Thus, as in the given scenario, the pink rose has a type of protein for the petal shape on the other hand, the yellow rose has two types of protein for the petal shape feature.
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Why is a theory a hypothesis?
Answer:
Because a theory is a speculation on a topic that is in short words, the point of view on a group or individual. A hypothesis is an educated guess on a topic, which is relatable to a theory, since they are both considered, "thinking" or, "speculations" about one thing at a given time.
9. What part of the body covers the windpipe when you swallow?
O tongue
O epiglottis
O bronchi
O diaphragm
Answer:
epiglottis
Hope it helps:)
Answer:
B. epiglottis
Explanation:
this is the part of your body that covers the windpipe when you swallow.
An antibiotic is a type of medication that cures infectious diseases. Why does the word antibiotic suggest that these
medications would be ineffective against viruses?
Explanation:
Antibiotics cannot kill viruses because bacteria and viruses have different mechanisms and machinery to survive and replicate. The antibiotic has no “target” to attack in a virus. However, antiviral medications and vaccines are specific for viruses.
Explain what happens to the level of the sucrose solution in the glass tube
The level of sucrose solution will rise in the glass tube because water molecules will pass through the semipermeable membrane into the tube as water potential is higher outside than inside the tube.
What is osmosis?Osmosis is the movement of water molecules from a region of low solute concentration or high water potential to a region of high solute concentration or low water potential through a semipermeable membrane until equilibrium concentration is attained.
The movement of water molecules is based on a concentration gradient, from a region where there are more water molecules to a region where there are fewer water molecules.
Thus, this could be the answer.
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briefly discuss five economic importance of microorganisms
Answer:
Bacteria are economically important as these microorganisms are used by humans for many purposes. The beneficial uses of bacteria include the production of traditional foods such as fudge, yogurt, cheese, and vinegar. Microbes are also important in agriculture for compost and fertilizer production.
Answer:
The human body has 10 microorganisms for every human cell, and these microbes contribute to digestion, produce vitamin K, promote the development of the immune system, and detoxify harmful chemicals. They are also important in agriculture for compost and fertilizer production.
Explanation:
Many cities are working to reduce waste by finding new uses for garbage.
which action could help a city reduce landfill waste?
a. providing discarded building supplies to residents
b. building new incinerators
c. providing plastic trash bags to residents
d. downsizing recycling facilities
Building new incinerators is an action which could help a city reduce landfill waste and is denoted as option B.
What is Incineration?This is a method used to treat and involves burning the wastes in special structures referred to as incinerators.
Incineration and recycling are the main methods which help reduce landfill waste.
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Which of the following is NOT a feature found
in nematodes?
A. complex nervous system
B. bilateral symmetry
C. fluid-filled body cavity
D. digestive tract with two openings
Complex nervous system is not a feature found in nematodes and is denoted as option A.
What are Nematodes?
They are also referred to as roundworm and have unsegmented thread-like body with a distinct mouth and anus.
They have a simple nervous system which runs along the length and width of the organism.
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How does excess calcium from dissolved bones affect kidney function?
group of answer choices
excess calcium travels around the bloodstream until it reaches the kidneys, where it accumulates and causes kidney failure.
excess calcium travels around the bloodstream until it reaches the kidneys, where it is dissolved and increases kidney function.
excess calcium travels around the bloodstream until it reaches the kidneys, where it is dissolved and narrows kidney blood vessels.
excess calcium travels around the bloodstream until it reaches the kidneys, where it accumulates and can form kidney stones.
Answer:
The last choice
Explanation:
Hypercalcemia is a condition in which the calcium level in your blood is above normal. Too much calcium in your blood can weaken your bones, create kidney stones, and interfere with how your heart and brain work.
Mountain ranges form along ___ plate boundaries via orogenic processes.
Rift valleys formed through the stretching of divergent plates occurs through a/an ___ process.
The formation of mountain ranges occurs as a result of ___.
Scientists observe an extremely long ___ area in a continental plate during an orogenic process.
___ processes cause vertical plate motion along tectonic plates.
1. Mountain ranges form along convergent plate boundaries via orogenic processes.
What is tectonic plates?The formation of mountains is caused by tectonic plates. A mountain is formed when two tectonic plates move towards each other and collide, resulting in altitudes that can take years to reach but that eventually create massive mountains through what are known as convergent plate borders.
2. Rift valleys formed through the stretching of divergent plates occurs through a divergent boundary process.
When tectonic plates separate, they can leave low ground areas like the Rift Valley, which are produced by diverging continental plate borders. They can be found on the surface of the Earth or at the bottom of the ocean, and they are formed by the expansion of the seabed.
3. The formation of mountain ranges occurs as a result of orogeny.
This process occurs when one continental plate dips and the other rises, allowing mountain ranges to form. Orogeny is the name given to this process.
4. Scientists observe an extremely long deformation area in a continental plate during an orogenic process..
Scientists use tectonic plate simulations to study this deformation in order to better predict natural disasters such as earthquakes.
5. Epeirogenic process causes vertical plate motion along tectonic plates.
The vertical movement of a continent that generates soft arcs or rises parts uniformly is known as epeirogeny.
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