In cats, long-hair (H) is dominant to short-hair (h). One cat is heterozygous for its long-hair and its mate has short-hair. First, use a Punnett square to determine the genotypes, phenotypes and probability of their possible offspring.
What is the probability of having a short-haired cat?
A) 0%
B) 25%
C) 50%
D) 75%
E) 100%
Answers
Answer:
C) 50%
Explanation:
When crossed, a heter ozygous long-haired cat (Hh) and a hom ozygous short-haired cat (hh) produces 50% heter ozygous long-haired (Hh) and 50% hom ozygous short-haired (hh)
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Related Questions
How are molecules moved across the cell membrane during active transport?
Answers
Answer: They move against the concentration gradient
Explanation: This is because, with active transport, the molecules go from a low concentration to a high concentration.
Answer:
protein
Explanation:
EDGE 2022
In which situation would all of the larger elephants in a herd most likely stand shoulder-to-shoulder around a young calf?
to protect the calf from predators
to play a game with the calf
to keep the calf shaded if it is sunny out
to keep the calf dry if it is raining
Answers
Answer:
To protect the calf from predators?
Explanation:
Answer:
A This is the answer see
Explanation:
T/F : the feeding and growth portion of a protozoan's life cycle is known as the cyst stage.
Answers
The feeding and growth portion of a protozoan's life cycle is not known as the cyst stage. The cyst stage is a dormant and protective stage in the life cycle of certain protozoans. The statement is False.
It is characterized by the formation of a tough outer covering called a cyst, which allows the protozoan to survive harsh environmental conditions such as extreme temperatures, lack of moisture, or the presence of toxins.During the cyst stage, the protozoan is in a resting state and does not actively feed or grow. Instead, it remains in a dormant state until conditions become favorable for its reactivation.The cyst stage helps the protozoan to withstand unfavorable conditions and serves as a means of dispersal to new environments.
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A bacterial cell can counteract the drop in temperature by changing its membrane lipid compisition.a. Trueb. False
Answers
True. Bacterial cells have the ability to adapt to different environmental conditions, including changes in temperature. One way they can do this is by altering the composition of their membrane lipids.
Specifically, they can increase the proportion of unsaturated fatty acids in their membranes, which helps maintain membrane fluidity at lower temperatures. This is known as the "homeoviscous adaptation" response.
By changing their membrane lipid composition, bacterial cells can counteract the effects of a drop in temperature and continue to function properly. This is an important adaptation for bacteria living in environments with fluctuating temperatures, such as soil or water.
The answer to your question is: a. True. A Bacterial cell can counteract the drop in temperature by changing its membrane lipid composition. This process is called homeoviscous adaptation. When the temperature drops, the membrane lipids can become more rigid, which may affect the functionality of the cell.
To counteract this, bacteria can modify their membrane lipid composition by increasing the proportion of unsaturated fatty acids, which helps maintain membrane fluidity at lower temperatures. This adaptation enables the bacterial cell to function properly even under changing environmental conditions.
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blank makes up cell membranes
Answers
Phospholipids : This makes up the bi-layer which is the membrane's basic structure and has great control over what can enter and exit the cell, due to their hydrophobic tails and hydrophilic heads.
Cholesterol : This also controls entry and exit of substances as it also exhibits hydrophilic heads and hydrophobic tails. It also stabilises the membrane and affects its fluidity (the more there is, the more fluid is the membrane.)
Glycolipids : Those can act as receptor molecules (essential for cell-signalling), antigens and in cell-adhesion
Answer:
glycerophospholipids
Explanation:
With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains.
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Why can the rough endoplasmic reticulum produce proteins and the smooth endoplasmic reticulum cannot?
Answers
Answer:
Because there are ribosomes attached on the surface of rER which is the site of protein synthesis whereas sER do not possess of any ribosomes.
the wet bulb temperature is 10 C the Dry bulb temperature is 14 C what is the relative humidity?
Answers
The relative humidity is approximately 22.9% based on the given wet bulb temperature of 10°C and dry bulb temperature of 14°C.
Relative humidityWet bulb temperature: 10°C = 50°F
Dry bulb temperature: 14°C = 57.2°F
SVP at wet bulb temperature: 0.284 * \(e^(17.27 * 10 / (10 + 237.3))\)= 0.284 * \(e^(-7.09)\) = 0.284 * 0.000828 = 0.0002356 psi
SVP at dry bulb temperature: 0.284 *\(e^(17.27 * 14 / (14 + 237.3))\) = 0.284 * e^(-5.97) = 0.284 * 0.002562 = 0.0007296 psi
AVP = 0.0002356 - (0.00066 * (57.2 - 50) * 14.7) = 0.0002356 - (0.00066 * 7.2 * 14.7) = 0.0002356 - 0.0686 = 0.000167 psi
RH = (AVP / SVP at dry bulb temperature) * 100
RH = (0.000167 / 0.0007296) * 100 = 0.229 * 100 = 22.9%
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Identify the biotic factors in the environment shown. Check all that apply.
1) people
2) grass
3) rocks in the mountains
4) nylon tent
5) wooden kayak
Answers
Answer:
1, 2, 5
Explanation:
Just did the assignment
People and grass are the biotic factors in the environment shown.
What are biotic factors?
"Biotic factors are the living organisms in an ecosystem. Examples include people, plants, animals etc."
What is an environment?
"Environment can be defined as a sum total of all the living and non-living elements and their effects that influence human life."
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The graphic below shows an unlabeled animal cell. In which location would genetic material most likely be found?
Answers
Answer:
Nuclues.
Explanation:
The nucleus holds the genetic information.
A researcher studying rats uses a tone to signal that food is available in the hopper. After a number of tone-food pairings, the researcher pairs an illuminated light with just the tone. The rat paws, licks, and chews on the illuminated light when the tone is sounded, even though no food is provided in this training stage. This conditioning procedure illustrates the phenomenon of:______.
a. Sensory preconditioning.
b. Conditioned emotional responding.
c. Stimulus generalization.
d. Higher order conditioning
Answers
The conditioning procedure described, where the rat responds to an illuminated light when the tone is sounded, even though no food is provided, illustrates the phenomenon of higher order conditioning.
The correct option is d. Higher order conditioning
Higher order conditioning, also known as second-order conditioning, occurs when a conditioned stimulus (CS) that is already associated with an unconditioned stimulus (US) is paired with a new neutral stimulus. In this scenario, the tone-food pairing is the initial conditioning stage, where the tone becomes a conditioned stimulus (CS) that elicits a response because it is associated with the food (unconditioned stimulus, US). In the subsequent stage, the illuminated light is paired with the conditioned stimulus (CS), the tone.
As a result, the rat exhibits the conditioned response (pawing, licking, chewing) to the illuminated light alone, even though it does not directly predict the food. This phenomenon demonstrates higher order conditioning because the response to the illuminated light is acquired through its association with the already established conditioned stimulus (CS), the tone. The rat has learned to generalize the response to the new stimulus based on its association with the original conditioned stimulus.
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write one report in 300 words explaining any of the following topics listed below. Please no plagiarism. Please helppp
Answers
Viruses and bacteria are two types of microorganisms that can cause disease in humans and other animals. While they share some similarities, they also have many differences in terms of their structure, replication, and the ways in which they cause disease.
Bacteria are single-celled organisms that come in many different shapes and sizes. They can be either beneficial or harmful to humans, depending on the species and the circumstances. Some bacteria live in the human gut and help to digest food, while others can cause infections such as strep throat, pneumonia, and meningitis. Bacteria have a cell wall that provides structural support and protection, and they reproduce through a process called binary fission, in which one cell divides into two identical cells.
Viruses, on the other hand, are not technically alive, as they cannot replicate or carry out metabolic processes on their own. Instead, they rely on host cells to reproduce and spread. Viruses are made up of a core of genetic material (either DNA or RNA) surrounded by a protein coat called a capsid. Some viruses also have an outer envelope made up of lipids. Viruses attach themselves to host cells and inject their genetic material into the cell, which then takes over the host's machinery to produce more virus particles.
While bacteria can cause disease by invading and damaging host tissues, viruses typically cause disease by hijacking host cells and using them to produce more virus particles. Some common viral infections in humans include the common cold, flu, and HIV.
Both bacteria and viruses can be treated with antibiotics or antiviral medications, but these treatments can be less effective or even ineffective if the microorganism has developed resistance to the medication. Prevention measures such as vaccinations and good hygiene practices are often the best way to control the spread of these microorganisms.
In summary, bacteria and viruses are two distinct types of microorganisms that can cause disease in humans and animals. Bacteria are single-celled organisms with a cell wall that can reproduce through binary fission, while viruses are not technically alive and rely on host cells to replicate. Understanding the differences between these microorganisms is essential for preventing and treating infectious diseases.
to what temperature do scientists need to raise a strand of mouse dna for it completely separate?
Answers
Denaturation is done at a very high temperature of 95 degree Celsius for complete separation of mouse DNA.
What is PCR?The polymerase chain reaction, or PCR, is one of the most important uses of molecular biology. To amplify the target DNA molecule, PCR is utilised. In a thermal cycler, PCR is performed.
The three main stages to do PCR are as follows:
1. Denaturation 95 degrees Celsius is a very high temperature at which it is performed. This high temperature causes a process known as denaturation, which causes the DNA strands to split from one another.
2. The temperature is lowered to 55 degrees centigrade for renaturation in order to allow the denaturized DNA strands to anneal with one another.
3. DNA synthesis Deoxyribonucleotides, a thermostable DNA polymerase, and an RNA primer are added to the 3" ends of both strands to carry out the synthesis of new DNA strands relative to the template strands.
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what is unisexual flower
Answers
On her first open-ocean dive in the Santa Barbara Channel, Widder says she dove down to 880 feet and turned off her lights. Explain why she did this and how she described what she saw?
Answers
Answer:
She dove down to 880 feet and turned off her lights to observe bioluminescent animals in their natural habitat without visual obstruction from overhead lights. She saw many different animals of all shapes and sizes releasing bioluminescent light in different forms and variations.
Widder turned off her lights when she dove down to 880 feet in order to visualize the presence of bioluminescent organisms in their natural habitat.
What are bioluminescent organisms?Bioluminescent organisms may be defined as the types of organisms that significantly produce light by a chemical reaction within their entire body. Bioluminescence is the synthesis and emission of light by living organisms.
According to the context of this question, when Widder dove down to 880 feet in her first open-ocean dive in the Santa Barbara Channel, she want to observe the existence of bioluminescent organisms in their natural habitat along with their mechanisms of liberating light source through a chemical reaction. Due to this, she turned off her all lights which can distracted this visualization.
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Many cancers are caused by mutations in a tyrosine kinase receptor (RTK). Which mutation from the following would most likely cause cell proliferation that is characteristic of a tumor?
- A mutation that decreases the ability of the receptor to phosphorylate tyrosine residues.
- A mutation that inactivates a protein tyrosine phosphatase.
- A mutation that causes the receptor dimer to rapidly dissociate into monomers.
- A mutation that prevents the binding of the signal molecule to the receptor.
Answers
Many cancers are caused by mutations in a tyrosine kinase receptor (RTK). A mutation that would most likely cause cell proliferation that is characteristic of a tumor would be the mutation that causes the receptor dimer to rapidly dissociate into monomers.
RTKs (receptor tyrosine kinases) are important transmembrane proteins that transmit extracellular signals through the cell membrane and activate intracellular signaling pathways.
As such, they play a key role in various cellular processes like growth, division, and differentiation.
However, when RTKs are altered by mutations, they can lead to the development of cancers. Mutations in RTKs can increase their activity and/or expression, leading to overstimulation of cellular growth signals.
Tyrosine kinase is an enzyme that phosphorylates tyrosine residues.
RTKs are transmembrane proteins that phosphorylate tyrosine residues in response to the binding of growth factor ligands to the extracellular domain. This phosphorylation activates downstream signaling pathways that control a range of cellular processes, including proliferation, differentiation, and survival.
Therefore, a mutation that decreases the ability of the receptor to phosphorylate tyrosine residues would most likely reduce cellular proliferation and tumor growth. Similarly, a mutation that prevents the binding of the signal molecule to the receptor would also reduce receptor activation and cellular growth.
On the other hand, a mutation that causes the receptor dimer to rapidly dissociate into monomers would likely increase receptor activity and promote cellular growth and proliferation.
Thus, this mutation would most likely cause cell proliferation that is characteristic of a tumor.
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Calcium chloride is used as a de-icer on roads in winter. It has a density of 2.50 g/cm3
What is the volume of a 9.91 g sample of this substance?
Answers
The volume of the sample is 3.96cm³
Calcium chloride is an anhydrous salt that has the ability to form moisture faster than most compounds.
Therefore, it is used as de-icer on roads in winter.
To calculate the volume of the sample of calcium chloride used, the formula for density is used.
Which is,
Density = mass / volume
But, Density = 2.50g/cm³
mass = 9.91 g
∴ volume = mass / density ( here, volume is made the subject of formula)
= 9.91 / 2.50
= 3.96cm³
Therefore, the volume of the mass of sample given is 3.96cm³
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Environmentalists agree we must stop using coal powered plants. Which of the following causes the most concern about the impact of coal on the environment?
A. Leaks during mining can cause spills that pollute the ocean.
B. Mining for coal requires digging deep into the earth’s crust, which may cause fracking.
C. Many coal plants have had accidents that released radiation into the air.
D. Coal mining and usage causes much water, land, and air pollution.
Answers
How much water would you need to add 225. 0 ml of 1. 500 m sugar solution to make a 1. 000 m solution
Answers
You would need to add 337.5 mL of water to the initial 225.0 mL of the 1.500 M sugar solution to obtain a final solution with a concentration of 1.000 M.
To calculate the amount of water needed to dilute the sugar solution, we can use the formula for dilution:
C1V1 = C2V2,
where C1 and V1 are the initial concentration and volume, and C2 and V2 are the final concentration and volume, respectively.
In this case, we have C1 = 1.500 M (initial concentration), V1 = 225.0 mL (initial volume), and C2 = 1.000 M (final concentration).
To find V2 (volume of the final solution, which includes water), we rearrange the formula:
V2 = (C1V1) / C2.
Substituting the values, we get:
V2 = (1.500 M * 225.0 mL) / 1.000 M = 337.5 mL.
Therefore, you would need to add 337.5 mL of water to the initial 225.0 mL of the 1.500 M sugar solution to obtain a final solution with a concentration of 1.000 M.
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10
01:57:37
In the study of cancer, researchers have used different types of cells, different environmental conditions, and different
experimental designs. But, all researchers have arrived at the same conclusion. What does this say about the
conclusion?
Answers
Answer: In study of cancer, researchers have used different types of cells, different environmental conditions, and different experimental designs. But, all researchers have arrived at the same conclusion that the study is well supported to cancer studies.
Explanation: This is because each cell behaves differently in different environmental conditions and each type of cell has its peculiar behaviour in different conditions.
So by this pattern varied studies can be done.
Answer:
A
Explanation:
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A square jaw is recessive to a round jaw (dominant). Is it possible for two parents with a square jaw to have a child with a round jaw? Why or why not?
Answers
Answer:
No
Explanation:
If both parents have at least one dominant allele, they cannot pass two recessive alleles to their child. 6. Therefore, it is not possible for two parents with a round jaw to have a child with a square jaw unless there is a mutation or a new genetic variation that causes the square jaw trait to appear.
During __ cell become specialized to peform certain functions
Answers
Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression.
Some carnivores hunt together in groups. What are the benefits of cooperative hunting?
division of labor and protection
reproduction and foraging
foraging and division of labor
protection and reproduction
Answers
Answer:
c
Explanation:
Some carnivores hunt together in groups. The benefits of cooperative hunting is protection and the reproduction of species. Thus, the correct option is D.
What is Cooperative hunting?Cooperative hunting is the result of coordination of group behaviors in such a way that increases the chances of a successful hunt.
Carnivorous organisms tend to move together in what is called as cooperative hunting which is specifically for the reason of protection and reproduction of the species.
Reproduction is the process of procreation or breeding of a species. It is defined as the biological process whereby new offspring are produced from parents. Reproduction is known to be one of the fundamental feature of all the existing life forms.
Therefore, the correct option is D.
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Which of the following discoveries were the result of Erwin Chargaff's experiments?
Answers
Answer:
A
Explanation:
The four bases found in DNA are adenine, thymine, cytosine and guanine.
answer the questions above
Answers
Answer:
Hey there!
3) Well injection is usually done through the vein because they need the substance to go into the blood.
4) Some people believe that the heart is on the left side because its the left ventricle and atrium responsible and when people hear left they think the heart is on the left.
5) People living in high altitudes don't get as much oxygen so their bodies evolved into carrying ,more RBC so more oxygen is carried into their bodies.
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which statement about plant and animal cells are true?
Answers
Answer:
what is the question?
Explanation:
Answer:both use mitochondria to release energy
Explanation:i think
Which animal class has no tissue? A.Sponges B.Cnidarians C.Roundworms D. Flatworms
Answers
Although the step test is an easy and common measure of cardiovascular fitness, not everyone can do it. How do we evaluate fitness in someone who is unable to step up and down? Decide on a condition in which someone would not be able to step up and down, and research how you could assess their cardiovascular fitness. a) briefly describe the condition you chose (1 sentence) b) briefly describe how you could assess their cardiovascular fitness (4 sentences max) c) Include one reference (formatted in either APA or MLA) and attach a pdf of the article
Answers
These tests provide objective measures of cardiovascular fitness and can be adapted to the specific needs and abilities of individuals with paraplegia.
What is the condition chosen, assessment of cardiovascular fitness and reference?a) The condition chosen: Paraplegia - Paraplegia is a condition characterized by the loss of sensation and voluntary movement in the lower half of the body, typically due to spinal cord injury or disease.
b) Assessment of cardiovascular fitness: In individuals with paraplegia who are unable to perform the step test, alternative methods can be used to assess cardiovascular fitness. One such method is the wheelchair ergometer test, where the individual performs upper body exercise using a wheelchair ergometer while their heart rate, blood pressure, and oxygen consumption are monitored. Another method is the arm crank ergometer test, where the individual uses an arm crank ergometer to perform upper body exercise while their cardiovascular responses are measured. These tests provide objective measures of cardiovascular fitness and can be adapted to the specific needs and abilities of individuals with paraplegia.
c) Reference:
Lepers, R., & Maffiuletti, N. A. (2013). Assessment of upper body strength in paraplegics using force-velocity and power-velocity relationships. Spinal Cord, 51(9), 705–710. doi: 10.1038/sc.2013.75
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what is the main function of the muscular diaphragm?
Answers
The main function of the muscular diaphragm is to separate the thoracic cavity, which contains the heart and lungs, from the abdominal cavity, which contains the digestive organs.
When the diaphragm contracts, it moves downward and creates negative pressure in the chest, which allows air to flow into the lungs and facilitates breathing. When the diaphragm relaxes, it moves back up to its resting position and helps to expel air from the lungs. Additionally, the diaphragm plays an important role in controlling intra-abdominal pressure during activities such as coughing, vomiting, and defecation. The diaphragm is a vital muscle for respiration and proper functioning of the body's organs.
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. You are an ecologist collecting data about the declining growth rate of thecritically endangered Philippine eagle. The eagles’ only known population isestimated to have about 350 – 650 individuals. Which of the following can youassume is zero?A. natalityB. mortalityC. immigration
Answers
According to the given data, the population of the critically endangered Philippine eagle is about 350-650 individuals. This means that there is no immigration of the eagle species taking place.
Immigration takes place when a species sets up a home in a habitat because that habitat is suitable for it. In this situation, no immigration is taking place whi the population of species is very low.
Therefore, the correct answer is option c. immigration.
is formed when one or more than one atom bonds to another atom
Answers
Answer:
Compounds
Explanation:
Atoms that are chemically bonded are compounds(2 or more)