Answer: B
Explanation:
A model is easier to see, rather than having a real plant cell that you have to see with a telescope. So B is the answer. Hope this helps!
what is the scientific study of living things.
Answer:
Biology is the scientific study of living things.
Explanation:
hope this will help :)
Explanation:
biology is natural science concern with study of life and living organisms .Modern biology is vast and eclectic field composed of many specialized disciplines that study the structure , function , growth, distribution , evolution ,or other features of living organisims...the cell is the basic unit of life.
Bile:_______
A. digests proteins in the small intestine.
B. emulsifies fats in the small intestine.
C. is made by the gallbladder and stored by the liver.
D. activates trypsin in the small intestine.
E. activates the pancreas.
⚘ Emulsified fats in the small Intestine (B)
Explanation:-Bile is not an enzyme which is made in the liver which helps in the emulsification of fats. Here, Emulsification means the break down of larger molecules of fat into small molecule. The bile is temporarily stored in the Gall Bladder.
The bile juice is then released into the duodenum(the first part of small intestine) through hepato pancreatic duct. The duct carries both enzymes of pancreas and bile. They digest the food in the small intestine[tex].[/tex]
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In a step-by-step manner, explain how the voltage-regulated channels produce an Action Potential?
Answer:
The following are the steps illustrating the production of an action potential via the voltage-regulated channels:
1. First, the hypo-polarization of the stimulus takes place.
2. The opening of sodium cation gates takes place, resulting in the diffusion of sodium ions within the cell.
3. The threshold is attained at -55 mV, positive feedback takes place, that is, more opening of Na+ gates takes place, and thus, more diffusion of Na+ ions takes place within the cell resulting in depolarization.
4. The closing of Na+ ions gates occurs and the opening of K+ ions takes place.
5. Repolarization occurs resulting in hyperpolarization.
6. With the closing of K+ gates, the returning of resting membrane potential takes place.
The average lifespan a tortoise is 200years. How many scores is this?
*i don’t know what it means by scores but that’s the question i received*
Answer:
A score is 20.
So 200÷20=10.
You can find 10 scores in 200.
Answer:
Explanjtyj6isnhgoi eut
Which species is most likely to exhibit clumped dispersion?
Corporations measure their wealth in revenue. True False
Answer:
false
Explanation:
The first genomic libraries were cloned in:__________.
a) plasmid
b) bacteria
c) human
d) plants
Answer:
A. Plasmid
Explanation:
The first genomic libraries were cloned in plasmid. Thus option A is correct.
What is genomic library ?
A library is constructed by using a collection of the total genomic DNA from a single organism.
Genomic library construction involves the isolation of genomic DNA from a target organism, purification of the genomic DNA followed by fragmentation by using restriction enzyme into desired size,
The cloning of the fragmented DNA using a desired vector. The vector are different depend on the insert size of DNA.
The most common vectors are Escherichia coli or yeast and using these vectors easy amplification and retrieval of specific clones can be done which can further be used for analysis.
Genomic libraries are majorly used in for whole genome sequencing applications including the human genome and several model organisms.
Thus option A is correct.
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"How are the peppered moths of 19th century England, during the Industrial Revolution, proof of evolution?"
Why are male cats unable to express both orange and non-orange colors simultaneously in the same way as female cats?
O male cats only have one X chromosome
O only female cats inherit non-orange genes
O male cats have a dominant Y chromosome
only female cats inherit orange genes
The gene that codes for orange/non-orange color is X-linked. Female cats can express orange and non-orange simultaneously. Males, who only have one X chromosome, can express either orange or non-orange.
-----------------------------------------------
Male cats can only express one or two coat colors, but not three as females do. The combination of three simultaneous colors seems to be exclusive for females.
In cats, hair color is coded by different genes. In the particular case of orange color, we are referring to a codominant, diallelic, X-linked gene. Chromosome Y does not have an associated gene for the orange color.
The orange gene is diallelic, being
O the dominant allele ⇒ codes for orange ⇒ inhibits the expression of blacko the recessive allele ⇒ codes for not-orange ⇒ allows the expression of blackMales, who carry only one X chromosome, can be either
orange ⇒ X⁺Y (Where + symbol represents the dominant allele O)non-orange ⇒ X⁻Y (Where - symbol represents the recessive allele o)But, since females carry two X chromosomes, they can express either
orange ⇒ H0m0zyg0us dominant ⇒ X⁺X⁺ non-orange ⇒ H0m0zyg0us recessive ⇒ X⁻X⁻ combination of black and orange ⇒ Heter0zyg0us ⇒ X⁺X⁻----------------------------------------
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A student completed a lab report. Which correctly describes the difference between the "Question" and "Hypothesis"
sections of her report?
Answer:
A question is what your looking to solve in the experiment, and a hypothesis is a possible explanation to that question.
Explanation:
The question is usually one of the first steps you do when setting up an experiment, as it is what you are looking to solve. The hypothesis can change throughout the experiment as more details come up, but in the beginning of the experiment it is a proposed explanation based on limited proof.
I hope this helps!
-The Business Man
Many chemotherapy drugs used to treat cancer work by modifying the mitotic spindle. Paclitaxel works by interfering with normal microtubule breakdown during cell division and Vinblastine works by binding tubulin, thereby inhibiting the assembly of microtubules. How and where specifically do you think these drugs would stop a cancer cell
Answer:
by inhibiting the mitotic spindle plasticity
Explanation:
In eukaryotic cells, the mitotic spindle is the cytoskeletal structure by which sister chromatids are separated during cell division. Spindle microtubules are known to drive chromosome segregation, while tubulins are Microtubule-Associated Proteins (MAPs) that attach to microtubules in order to modulate their dynamics. Antimitotic drugs are nowadays widely used in chemotherapy to disrupt microtubule assembly and chromosome segregation, thereby producing mitotic arrest and cell death (apoptosis).
Amphibians moved to a terrestrial environment; however, they did not evolve the ability to live their entire lives on land. Explain the reason that they are still dependent on an aquatic environment. g
Answer:
See the answer below
Explanation:
Amphibians are not totally adapted to live on land because the aquatic environment is needed for several life processes such as reproduction, respiration, and sometimes, feeding.
The eggs of amphibians are without any protective shells and will suffer desiccation in the terrestrial environment. Hence, water is needed in order to protect the eggs. In addition, the male amphibians shed their sperm in the water close to the female eggs.
The young ones of amphibians are essentially aquatic and may not survive out of water for a long time because they only breathe gills - the lung is yet to develop or poorly developed at this stage. They have to grow and develop to a certain stage in water before they can start surviving on land.
Due to their reliance on an aquatic habitat for reproduction, amphibians relocated to a terrestrial environment but did not evolve the capacity to spend their entire lives on land.
Amphibians often lay their eggs in water or other damp places since these conditions are essential for a proper embryonic development.
Since the eggs don't have a shell to protect them, they need a moist environment to prevent desiccation and promote gas exchange.
The frog is an illustration of an amphibian that is still reliant on an aquatic habitat. In water, frogs lay their eggs, which develop into aquatic tadpoles.
Thus, even though they can live and thrive on land for a substantial portion of their life cycle, amphibians are dependent on an aquatic environment due to their reproductive and metabolic traits.
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Your question seems incomplete, the probable complete question is:
Amphibians moved to a terrestrial environment; however, they did not evolve the ability to live their entire lives on land. Explain the reason that they are still dependent on an aquatic environment. give example.
Which of the following best describes what happens to an enzyme after it catalyzes a chemical reaction? (5 points)
Do all cells in the population express insulin receptor on their surface? Is this expression dependent on the presence of insulin? Explain.
The purpose of an experiment is to compare results with a(n)
answer
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theory
hypothesis
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variable
Which domain(s) is/are made up of organisms without nuclei?
Answer:
Archaea
Explanation:
All of life can be divided into three domains, based on the type of cell of the organism: Bacteria: cells do not contain a nucleus. Archaea: cells do not contain a nucleus; they have a different cell wall from bacteria. Eukarya: cells do contain a nucleus.
Answer:
ARCHAEA is yr ANSWER..
The diagram below represents an energy pyramid.
Consumer 3
Consumer 2
Consumer 1
Producer
Which statement concerning the energy in this
pyramid is correct?
A. Consumer 3 contains the greatest amount of
stored energy.
B. Stored energy decreases from Consumer 2 to
Consumer 3.
C. Stored energy increases from Producer to
Consumer 1.
D. Producer organisms contain the least amount of
stored energy
Answer:
B)stored energy decreases from consumer 2 to consumer 3
stored energy decreases from consumer 2 to consumer 3, concerning the energy in this pyramid is correct. thus option B is correct.
what are consumers in food chain ?In a food chain there are two types of organism present producer which are mainly green photosynthetic plants, consumers which are depend on producers.
the primary difference between the position of producers and position primary consumers in the food chain are Primary consumers consist of the second level of the food chain, while producers make up the third level of the food chain.
The producer can autotropic organism as they make their own food whereas consumers are heterotrophic organism as they depend on producers for their nutrition.
consumers are classified into primary, secondary, quaternary and tertiary consumers which are herbivore, carnivore and omnivore respectively in nature based on their nutrition.
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Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2. If the force of friction resisting the student's push is 4 N, what is the net force acting on the board? A) 4N B) GN C) 10 N D) 14 N
Answer:
Net force acting on the board = 6 N
Explanation:
Given:
Force acting by student 1 = 10 N
Force acting by student 2 = 4 N
Find:
Net force acting on the board
Computation:
Net force acting on the board = Force acting by student 1 - Force acting by student 2
Net force acting on the board = 10 N - 2 N
Net force acting on the board = 6 N
Answer: 6N
Explanation:
What would be the long-term effect of the lymphatic vessels associated with a capillary bed were to become blocked?
a) More fluid would enter the venous capillaries.
b) Blood pressure in the capillary bed would increase.
c) Fluid would accumulate in interstitial areas.
d) Fewer proteins would leak into the interstitial fluid from the blood.
e) Nothing would happen.
Answer:
The accumulation of more fluid in the interstitial areas (C).
Explanation:
I'm currently in this class, this was correct.
The cell bodies of motor neurons to skeletal muscles are located in the A. Posterior/dorsal gray horns B. Limbic system C. Anterior/ventral gray horns D. Gray commissure
The cell bodies of motor neurons to skeletal muscles are located in the anterior/ventral gray horns.
Neurons are cells characterized by a body (called soma), and different kinds of prolongations that will have the task to carry the information to other neurons or tissues - these prolongations are axons (which are usually very long) and dendrites (much shorter than axons).
The motor neurons are the ones that conduct the electric impulse from the motor cortex in the brain to the skeletal muscles in our bodies, making muscle contraction and movement possible.
There are two types of motor neurons:
Upper motor neurons: Their cell bodies are located in the motor cortex in the precentral gyrus of the brain. Their axons synapse onto interneurons in the spinal cord.Lower motor neurons: These neurons have their cell soma located in the anterior gray horns of the spinal cord - from that place, their axons will exit the spine to reach the skeletal muscles that we want to contract to perform specific tasks such as running or grabbing a glass of water.Thus, we can conclude that the somas of lower motor neurons that transmit its impulse to skeletal muscle are located in the anterior gray horns of the spinal cord.
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Would you use an observational, experimental, or modeling approach to study a rare, endangered bird species
Answer:
The correct answer would be - observational approach.
Explanation:
Observation approach is the research technique that involves the observation of the subject or participates behavior in their natural habitat or state. This will be one of best approach to study.
Similarly when characterizing new findings various aspect of experimental, Observational details or modelling approaches will help in identification , classification and nomenclature. However, in comparison to experimental and modeling approach is more appropriate method for the rare endangered species.
Thus, the correct answer would be - observational approach.
a weight loss client is currently exercising 5+ hours a week and hits a plateau what adjustments should a trainer suggest?
A. increase k/cal by 250, decrease k/cal by 100, C. increase k/cal by 100 OR D. Decrease k/cal by 250
Answer: D. Decrease k/cal by 250
Explanation: An individual can be said to habe hit a plateau, if such person fails to get or feel any noticeable changes or experiences stagnation in the quest to achieve a certain level. In the context of exercising and shedding body fat using the scenario above, the client was currently exercising at 5+ hours per week, when she started, there was visible changes, however, after some time, she discovered that the changes had become stagnated and it was just all the same, such person could be said to have hit a plateau, to curb this, since the client is aiming to lose weight, such person should decrease daily intake of calories per day by 250. These remains a reduction in the daily fat intake and then the client reassess if there is a noticeable change.
Bree Wakefield is a 19-year-old college student, living in a dormitory on the campus of her university. She started to feel poorly and began to miss classes. She went to the student health center and was immediately referred to the hospital. She was diagnosed with a disease of the CNS - these are her symptoms:
● Fever
● Stiff neck
● Drowsiness
● Vomiting
● Severe headache
● Rash
● Light sensitivity
● Beginning stages of kidney failure
Answer:
Explanation:
After seeing her symptoms at the student health center, she was immediately referred to a hospital. In the hospital she was diagnosed with a disease of CNS (central nervous system). The primary cause of a CNS infection is a result of the communication of an infectious disease. In these diseases, some are contagious and spread easily among the people and other types are also infectious and spread by pathogen organisms.
Step 2
Based on the symptoms of stiff neck, fever, vomiting, and light sensitivity, she was suffered by the meningococcal meningitis. The reason behind this diagnosis is that these symptoms are majorly impacted this diagnosis. Meningococcal meningitis is a bacterial form of meningitis. It is an infectious disease caused by Neisseria meningitidis bacteria. It is a serious infection of the thin lining that surrounds the brain and the spinal cord.
Step 3
Initial diagnosis of the meningococcal meningitis disease can be made by the clinical examination followed by a lumbar puncture (spinal tap) showing a purulent spinal fluid. The bacteria can be seen in the microscopic examination of the spinal fluid. Lumbar puncture is a medical procedure (test) in which a needle is inserted in the spinal canal ...
How do the HIV/Aids pandemic statistics vary around the world?
Answer:
HIV (human immunodeficiency virus) causes AIDS (Autoimmune deficiency syndrome) and reduces the ability of body to fight infection.
HIV was first found in 1959 in a man from Democratic Republic of the Congo and then announced as a world pandemic by WHO.
Approximately 37.9 million people were infected with HIV globally in 2018 but the pandemic statistics vary around the world. Sub-Saharan Africa was most infected region from HIV in 2018 where 61% population was infected from HIV/AIDS. In South & South-East Asia, about 12% of all people infected with HIV in 2010.
Now WHO announced HIV as 'global epidemic".
Plants use photosynthesis to make
A. sugar
B. carbon
C. carbon dioxide
D. water
Answer:
A. sugar
Explanation:
Photosynthesis is the process where plants convert light into sugar, which allows them to eat and survive!
Answer:
A. sugar
Explanation:
Plants take in oxygen from the surrounding air and convert it into simpler form of sugar like glucose
A main goal of most environmental scientists is to
achieve
a. cost-benefit balance
B. supply and demand
C. sustainability
D. biodiversity
The main goal of most environmental scientists is to achieve sustainability. Thus, the correct option is C.
What is the primary work of environmental scientists?The primary work of environmental scientists is to identify and remove numerous types of pollution and their consequences that eventually harms the whole environment to a larger extent.
In environmental aspects, Sustainability is something that deals with the problems, resources, impacts, etc. of global measures with respect to the present and future need of the community.
It is the major goal of most environmental scientists in order to deliver the most prominent, valid, and accurate solution to all the major problems that make the life of living organisms a better one.
Therefore, the main goal of most environmental scientists is to achieve sustainability. Thus, the correct option is C.
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If you have a density of 100kg /L and a mass of 1000 units , tell me the following : First what are the mass units
Answer:
Mass units are equal to Kg
Explanation:
As per the requirement of the question, the data provided to compute the mass units is
Density = 100 Kg/L
Mass = 1000 units
According to the given situation, the mass units is presented below:-
As we know that the
Mass units are equal to Kg
Therefore, for determining the mass units we simply equal the Kg.
observable features of giant land snail
Answer: The shell of the giant African snail reaches up to 7.8 inches in length and 2.7-3.9 inches in height. An adult weighs about 32 grams. The body has two short tentacles and two long ones that have the eyes. The shell has an appearance conical and narrow, with 7 to 9 spirals visible on its surface.
Explanation:
Please state two similarities between Plasmolysis and haemolysis
Answer:
they both occur in living cells
both processes can lead to the death of the cells concerned
Which characteristics do all living things share?
A.
having the ability to communicate
B.
being composed to one or more cells
C.
being able to breathe air
D.
the tendency to live in groups
Answer:
being composed of one or more cells