Answer:
Homologous chromosomes carry the same genes and have the same shape and length, so all the choices are correct.
Explanation:
The homologous chromosomes are so called because each of them has the same DNA molecule, giving rise to the same genes, distributed in the same location within the chromosome.
Somatic cells are diploid, which means that the genetic information that determines specific characteristics is distributed in pairs. Each of the chromosomes that form a pair comes from the father and mother, and the members of a pair are known as homologous chromosomes.
The homologous chromosomes are characterized by having the same shape and size, and contain the same genes, although the information contained in them —the alleles— may be different. Hence the possibility that one allele is dominant and another recessive on two chromosomes of a pair.
Explain the contribution of antigenic determinant in false negative and false positive test
Answer:
The contribution of the antigenic determinant is given below:
Explanation:
Antigenic determinant or epitope is the part of the antigen that is recognized by the immune cells or antibodies such as the B- cells by binding to these cells and evokes the response in the host. The antibodies bind to the epitope segments only not to the entire antigen protein.
A false-positive test is a test where the result suggests that an individual has a specific condition but in reality not having such condition. opposite in the false-negative So, the antigenic determinant binds to the specific antibodies and shows wide significance to reduce the false-negative or false-positive.
Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to increase milk production?
A.By increasing the age of the cows that are bred
B.By choosing cows that are high milk producers
C.By limiting the number of offspring per cow
D.By choosing cows that can produce milk after eating the most food
Answer:
I would say B.By choosing cows that are high milk producers
this is just my guess tho
So, the answer is B. Your welcome.
PLS ANSWER FAST! Which of these descriptions best contrasts safety knowledge for cows and horses? Horses have a definite flight zone, whereas cows do not Cows will startle at sudden movement or noise. but horses do not. Cows have 360-degree vision, but horses do not Cows have a definite flight zone, whereas horses do not.
Answer:
the descriptions best contrasts safety knowledge for cows and horses is the description that says "Cows have 360-degree vision, but horses do not Cows have a definite flight zone, whereas horses do not"
Explanation:
For horses, the size of the flight zone depends primarily on the tameness or familiarity of the horse with the handler. With frequent handling, the flight zone decreases in size and may even disappear. A horse that is approached head-on has a larger flight zone than if it is approached from the side.
When moving groups of cattle in open spaces. The flight zone is the animal's personal space, and the size of the flight zone is determined by the wildness or tameness of the animal. Completely tame animals have no flight zone and people can touch them.
Answer:
It's A
Explanation:
Which of these are NOT found in plant cells?
a)cell membranes
b)centrioles
c)mitochondria
d)cell walls
Answer:
B. centrioles
Explanation:
Plant cells have cell walls, cell membranes and also contain mitochondria along the chloroplasts.
There are three semicircular canals per ear.
True
O False
Qui
difference between a molecule and a cell.
Answer:A cell is made of molecules and a molecule is made of atoms. That's the simplest way of putting it. More complicated is that a cell is made up of macromolecules, such as proteins, lipids , etc. A molecule is a particular configuration of atoms.
Explanation:
it called google
Who is considered to have discovered the electron?
Answer:
J.J. Thompson
Explanation:
Electron was discovered by J. J. Thomson in 1897 when he was studying the properties of cathode ray.
Answer:
J.J Thomson
Explanation:
Phosphatidate (phosphatidic acid) is a precursor in the synthesis of some lipids. Phosphatidate (phosphatidic acid) is a branched molecule. The core of the molecule is a three carbon chain. Carbon one is single bonded to two hydrogens, and a side chain. The side chain is oxygen single bonded to carbon. The carbon is double bonded to oxygen and an R 1 side chain. Carbon two of the core chain is single bonded 1 hydrogen and to oxygen which is single bonded to carbon. The carbon is double bonded to oxygen and single bonded to an R 2 side chain. Carbon three is single bonded to two hydrogens and a phosphate group. P O 4 2 minus. Phosphatidate (phosphatidic acid) Identify the lipids that have phosphatidate as a precursor.
Answer:
1. Phosphatidylethanolamide: The substituent head-group is ethanolamine
2. Phosphatidylcholine: The substituent head-group is choline.
3. Phosphatidylserine: The substituent head-group is serine
4. Phosphatidylglycerol: The substituent head-group is glycerol
5. Phosphatidylinositol-4,5-bisphosphate: The substituent head-group is myo-inositol-4,5-bisphosphate
6. Cardiolipin: The substituent head-group is phosphatidylglycerol
The attachment below shows the structures of the glycerospholipids
Explanation:
Phosphatidic acid is the parent compound in glycerophospholipids.
The core of phosphatidic acid is glycerol to which two fatty acids are attached by means of ester linkages to the first ad second carbon atoms. The third carbon atom is attached to a phosphate group. The alcohol group of the phosphate group serves as a point of attachment for the polar head group of other lipids derived from phosphatidic acid. These lipids include:
1. Phosphatidylethanolamide: The substituent head-group is ethanolamine
2. Phosphatidylcholine: The substituent head-group is choline.
3. Phosphatidylserine: The substituent head-group is serine
4. Phosphatidylglycerol: The substituent head-group is glycerol
5. Phosphatidylinositol-4,5-bisphosphate: The substituent head-group is myo-inositol-4,5-bisphosphate
6. Cardiolipin: The substituent head-group is phosphatidylglycerol
Dating the fossil at the site it was found, without benefit of laboratory equipment, would BEST be described as
A) carbon dating.
B) imprint dating.
C) relative dating.
D) half-life dating.
Answer:
Answer c) Relative Dating.
The total volume of plant cells is often significantly greater than the total volume in animal cells. The most reasonable explanation for this observation is that
A) animal cells are spherical, whereas plant cells are elongated.
B) plant cells are capable of having a much higher surface-to-volume ratio than animal cells.
C) plant cells have a much more highly convoluted (folded) plasma membrane than animal cells.
D) plant cells contain a large vacuole that occupies much of the volume of the cell.
Answer:
D
Explanation:
In plant cells, the vacuoles are much larger than in animal cells. When a plant cell has stopped growing, there is usually one very large vacuole. Sometimes that vacuole can take up more than half of the cell's volume. The vacuole holds large amounts of water or food.
Define coefficient to show its scientific meaning
Answer:
In science, a coefficient is a constant term related to the properties of a product. In chemistry, when you see a number in front of a chemical like 2H2o, you're looking at the coefficient.
Identify the cellular structures where photosynthesis occurs.
Answer:
Chloroplasts
Explanation:
Plzz help!
Which best describes the relationship between two species and a niche?
If two species have the same niche, one species will always become extinct.
Two species are able to occupy the same niche in the same habitat.
Two species cannot occupy the same niche in the same habitat.
If two species have the same niche, one species will always move.
Answer:
C. Two species cannot occupy the same niche in the same habitat.
Explanation:
just took the quiz
Answer:
C
Explanation:
I did it on edge 2020
A substance from food that the body uses for growth, repair and energy. PLZ HELP
1. Fiber
2. saturated fat
3. amino acid
4. unsaturated fat
What light is this red leaf NOT absorbing?
Answer:
Can you post the picture please?
Explanation:
If you move farther away from Earth, does it have the same amount of
gravitational force acting on you or does it change?
Answer:
The strength of the force is inversely proportional to the distance squared. The farther away an object is, the weaker the force; the closer, the stronger.
NEXT QUESTION.
when the moon is between the earth and the sun, what moon phase will this be??
a. full moon.
b. new moon.
c. first quarter.
d. last quarter.
Answer:
New Moon
Explanation:
The new moon phase occurs when the moon is between the Sun and the Earth.
please help thermal energy transfer Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network folder. Upload each file separately. Your work will not be submitted to your teacher until you click Submit.
Answer:
these are instructions
In the negative feedback mechanism for hypotension, decreased urine volume would:
Question 33 options:
increase blood pressure
decrease blood pressure
have no effect on blood pressure
In the negative feedback mechanism for hypertension, increased urine volume would:
Question 39 options:
have no effect on blood pressure
increase blood pressure
decrease blood pressure
- Making more cells is needed for growth, development, and _______
repair.
Answer:
cell
Explanation:
50 points: write 3 paragraphs on the difference of asexual and sexual reproduction and why is asexual better
Answer:
When an organism makes more of itself without the exchang of genetic information with another organism through sex, the reproduction is asexual.while
In sexual reproduction, the exchange of dna and other genetic material is required as it involves two separate organisms.Finally
Asexual is better in terms of time, less energy and only one organism (the parent cell) is needed for the process.Niagara Falls is a big waterfall on the border of Canada and the United States. Each year the edge of the waterfall moves back a couple of centimeters because the water is breaking apart the rocks on the edge. What is this an example of? Why?
There are many reasons why all humans do not perceive sounds similarly in our environment, including adaptation, hearing loss and/or deafness.
For 2A-2D, first determine whether the scenario is an example of sensory adaptation, conduction deafness, sensorineural deafness, and/or central deafness.
Second, for the scenarios that are examples of deafness, explain briefly how the scenario leads to deafness (i.e., how does the scenario alter normal auditory processing). If you have selected sensory adaptation as an answer, explain briefly why the scenario does not fall under the categorization of deafness. Use your own words to briefly explain - simply listing definitions is not sufficient. (2.5 points each for matching, 5 points each for correct justification)
2A. Listening to excessive loud noises everyday over years that causes loss of stereocilia
2B. Hearing construction outside when it first begins, but no longer noticing the sound minutes later
2C. Difficulty understanding speech, but no damage to ears or ability to understand nonverbal sounds
2D. A hole in the tympanic membrane caused by an ear infection
Answer:
2A. central deafness
2B. sensory adaptation
2C. sensorineural deafness
2D. conduction deafness
Explanation:
2A. Listening to excessively loud noises every day over the years that causes loss of stereocilia is an example of central deafness.
Central deafness could lead to deafness either partially or completely of one or both ears due to persistent exposure of the eardrum to loud noise every day for years. when it happens in years that is gradual damage which is usually common compared to sudden deafness. Stereocilia can be damaged with a persistent loud noise.
2B. Hearing construction outside when it first begins but no longer noticing the sound minutes later is an example of sensory adaptation.
In sensory adaptation, the sensory system tends to get adapted to a change in the sound that comes from the environment usually with that sound remaining constant over time. The sensory system get used to the constant stimuli, in this case, the construction outside and with time the system tends to make the stimuli less sensitive.
Sensory adaptation does not fall under the categorization of deafness because, though prolonged exposure of the hears to loud noise could lead to deafness, Sensory adaptation is just an adaptive feature of the hearing system and it could be a loud or low sound or noises.
2C. Difficulty understanding speech, but no damage to ears or ability to understand nonverbal sounds are an example of sensorineural deafness.
Sensorineural deafness involves the ability to hear sound but not to understand speech. Sounds may not be clear but the sufferer could hear a loud noise and it is usually caused if the part of the hearing that collects impulses and sends them to the brain become damaged.
2D. A hole in the tympanic membrane caused by an ear infection is an example of conduction deafness.
The tympanic membrane is also known as the Eardrum, the vibration of this membrane after being hit by stimuli from sounds is part of the fore process to allow the interpretation of sound by the brain. So when there is a hole in the eardrum conduction deafness would occur as the sound wave from the environment is blocked failing to be conducted through the eardrum.
9C. The diagram below shows an enzyme-catalyzed reaction. How do
enzymes speed up biochemical reactions? *
Carbon dioxide
Water
Enzyme
Substrates
(carbonic
bind to
anhydrose
enzyme
-Active site
Carbonic
acid
Enzyme-
substrate
complex
Products
are released
Substrates
are converted
into products
They lower the activation energy of the reaction
They increase the number of available reactant particles
They absorb energy from the products
They provide energy to the reactants
Answer:
They lower the activation energy of the reaction
Explanation:
Enzymes are proteinous biochemical molecules that serve as catalyst in living systems. They speed up the rate of biochemical reactions by lowering the activation energy of the reaction they are involved in.
As this question describes, enzymes possess an active site, which the substrate binds to yield products. The enzymes make the reaction faster by reducing the activation energy of the reaction, which is the energy needed to start a reaction.
Which of the following is the most obvious sign of cluster distribution in termites? a. They are insects. b. They are detritivores. c. They are social insects. d. Many species of termites are considered pests.
Answer:
C
Explanation:
The most obvious sign of cluster distribution in termites is they are social insects. The correct option is c.
What is cluster distribution?In cluster sampling, a population is divided into clusters, which are smaller groups. They then choose a sample at random from these clusters. Often employed to investigate huge populations, particularly those that are extensively geographically distributed, cluster sampling is a probability sampling technique.
Termite colonies can contain anywhere between 100 and 1,000 individuals, with the larger species typically having a larger colony size. However, some termite colonies, including those with a large population, can reach millions of members.
Therefore, the correct option is c. They are social insects.
To learn more about cluster distribution, refer to the link:
https://brainly.com/question/12624750
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How does the storage of energy in ATP molecules benefit a cell?
Answer:
ATP. Specifically, during cellular respiration, the energy stored in glucose is transferred to ATP (Figure below). ATP, or adenosine triphosphate, is chemical energy the cell can use. It is the molecule that provides energy for your cells to perform work, such as moving your muscles as you walk down the street.
Explanation:
Write any 2 control measures of Virus.
Answer:
Personal hygiene, environmental hygiene
Explanation:
Always take care of the body to be clean often to avoid the rate of virus sticking on and in the body through diffusion, and often clean the environment to reduce the spread of virus
Explain how fossil fuels found in the Earth's crust are ultimately the result of biological processes.
Answer:
Fossil fuels are formed when organic matter such as the remains of animals and plants are buried and sequestered deep underground. The energy stored in these once-living things, as well as the process of being buried, causes the organic material to undergo a series of chemical transformations.
Answer:
Fossil fuels are formed when organic matter such as the remains of animals and plants are buried and sequestered deep underground. The energy stored in these once-living things, as well as the process of being buried, causes the organic material to undergo a series of chemical transformations.
Explanation:
What does the Big Bang Theory explain about the current size of the universe?
Answer:
b
Explanation:
Answer:
The formation of the Universe.
Explanation:
A P E X
Earths magnetic fields does not affect
Answer: a: another planet
Explanation: