Answer: D
Explanation: Because new dog breeds are made when people mix two different breeds together to make another breed
Neuromodulation is the release of chemicals (other than ____________ ) from cells that locally regulate or alter the response of neurons to neurotransmitters. The substances released are called ____________ . Neuromodulation generally results in either facilitation or inhibition. When there is greater response from a postsynaptic neuron because of the release of neuromodulators it is ____________ . This may result from either ____________ amount of neurotransmitter in the synaptic cleft or ____________ number of receptors on postsynaptic neurons. When there is less response from a postsynaptic neuron because of the release of neuromodulators, it is called ____________ . This results from either ____________ amount of neurotransmitter in the synaptic cleft or ____________ number of receptors on postsynaptic neurons.
Answer:
Neurotransmitters; neuromodulators; facilitation; an increased; an increased; inhibition; a decreased; a decreased.
Explanation:
In Biology, stimulus can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ.
Neuromodulation is the release of chemicals (other than neurotransmitters ) from cells that locally regulate or alter the response of neurons to neurotransmitters. The substances released are called neuromodulators. Neuromodulation generally results in either facilitation or inhibition. When there is greater response from a postsynaptic neuron because of the release of neuromodulators it is facilitation. This may result from either an increased amount of neurotransmitter in the synaptic cleft or an increased number of receptors on postsynaptic neurons. When there is less response from a postsynaptic neuron because of the release of neuromodulators, it is called inhibition. This results from either a decreased amount of neurotransmitter in the synaptic cleft or a decreased number of receptors on postsynaptic neurons.
You leave a cracker in your mouth for 7 minutes without chewing. Hormones signal amylase to be released in your mouth and the cracker begins to dissolve. Which to systems ane being used in this scenario?
A.Endocrine & Immune
B.Digestive and Skeletal
C.Endocrine & Digestive
D.Digestive and Excretory
How can you call something "alive"? All living things share certain characteristics.
Part A: List the 9 characteristics of life. (1 point)
Part B: Choose 3 of the characteristics of life above. Give an example of each that describes how that characteristic contributes to the organism's survival. (3 points)
Explanation:
A - response to stimuli, reproduction, respiration (breathing), growth and development, regulation, homeostasis, energy processing, evolution,excretion.there's more but, I've only mentioned 9.
B -response to stimuli - by responding to stimuli the organism indicates the presence of nervous system and response to maintain survival.reproduction - by reproducing the organism is promoting the species' survival by maintaining it's presence for generations. respiration / breathing - this characteristic indicates gas exchange in an organism which, suggests metabolic reactions in the organism that provides it with necessary energy.hope this helps. :)
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Which of the following characteristics is shared by viruses and living cells? Both viruses and living cells –
A. have a nucleus, as well as a cell wall.
B. contain nucleic acids such as DNA or RNA.
C. can replicate independently of a host cell.
D. use organelles to perform life functions.
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If i do you will be reported
Answer:
B
Explanation:
How might change in one population affect other populations?
Which best describes how to classify water?
A It is an element because it is made
from a pure substance.
В
It is a compound because it is made
of a single kind of molecule.
© It is a mixture because it is composed
of more than one molecule.
D It is a solution because it is a
homogenous mixture of different
compounds.
Answer:
D
Explanation:
Water is a compound and scientifically known as H[tex]_{2}[/tex]0 (2 hydrogen atoms and 1 oxygen). Therefore, the answer is...
Not A because water is not an element of one pure substance; rather, it is a compound and can be broken down into two pure substances.Not B because the statement contradicts itself: a compound is made of different atoms and, thus, different molecules.Not C because a mixture contains different substances that are physically -- not chemically -- combined. And as we know, water is a compound, which means that its atoms are chemically bonded to one another. Or else it would just be 2 free hydrogen atoms and 1 oxygen.D (yay!) because it is not the *most* accurate, but simply the best description of those provided. Water can be described as a homogenous (uniform in appearance) mixture because, minus the "mixture" part, that's what it is, essentially: a substance that looks pure but is really made of up different molecules.Ngl this was tricky, but I hope this helps :)
Provide two reasons why it is important to isolate undigested plant cells.
I need this asap
Answer:
It helps to support growth and helps producing energy to do vital functions.
Hope this helps!
A reliable DNA analysis is based on the DNA conditions. The importance of using undigested cells is that DNA is well-preserved, not affected by external factors, and can be used to compare it to database sequences.
------------------------------------------
Dr. Pringle studies niche partitioning and competition reduction among coexistent species in Africa.
He is interested in knowing the exact source of food of different herbivorous species. To do so, he is using the technique of DNA metabarcoding.
He collects fresh animals' dung and gets the indigested plant cells.
DNA is isolated, sequenced, and compared with the DNI of known species, which are a potential source of food for these animals.
Once he matches the cells' DNA with the corresponding plant species from the database, he can use this information to detail the animal's source of food.
The importance of getting fresh, undigested cells from the dung, is that
The animal's digestive enzymes have not broken the cell walls and digested the cell content. The dung environmental conditions such as pH, temperature, or microbiota have not affected the cell's DNA. Undigested cells' DNA is well-preserved and can be used to compare it with the plant species database.------------------------------------------------------
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How does the movement, diet, and cellular structure of an organism play a role in classification?
Centrosomes and lysosomes are found in animal cells, but do not exist within plant cells.
The lysosomes are the animal cell’s “garbage disposal”, while in plant cells the same function takes place in vacuoles.
Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells.
The cell wall is a rigid covering that protects the cell, provides structural support, and gives shape to the cell.
The chloroplasts, found in plant cells, contain a green pigment called chlorophyll, which captures the light energy that drives the reactions of plant photosynthesis.
The central vacuole plays a key role in regulating a plant cell’s concentration of water in changing environmental conditions. follow me
Answer:
Describe the differences among meteoroids, meteors, and meteorites.
Explanation:
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Which of the following is the broadest taxonomic category?
A
phylum
B
class
C
genus
D
domain
Answer:
I think it's A- phylum, hope this helps
Which kingdom includes multicellular, heterotrophic organisms that absorb nutrients from other dead organisms?
Protista
Animalia
Plantae
Fungi
Answer: Fungi
Explanation:
An organism with a mutated cell
Answer:.
An organism with a mutated cell is mutant
Hope this helps!
What do organisms use most of this energy for?
a) so they can continue to digest food
b) so they can continue to move around
c) so they can continue to breathe
d) so they can grow repair and reproduce
e) all of the above
Answer:
E
Explanation:
They need energy to do all these necessary feats.
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Population after
natural selection
Original
population
21.
The transition of light colored moths in an original population into dark colored moths after
natural selection occurs is a classic example of
A.Normal selection.
B.Directional selection.
C.Sexual selection.
D.Disruptive selection.
plzz help mark brainiest 10 points
Answer:
B
Explanation:
Sunrise you will see a full moon
A population of 250 birds inhabit the canopy of tropical rainforest that has a caring capacity of 400 birds. What is the maximum population growth if a population grows 283 in one year
Answer:
Explanation:
0.35
The maximum population growth if the population grows 283 in one year is : 13.2%
Maximum population growth is the percentage change in the size of the population of a habitat in a given year.
Caring capacity = 400 birds
Initial population at the start of the year = 250 birds
Number of birds added = 283 birds
population growth rate = ( 283 - 250 ) / 250 * 100
= 0.132 * 100 = 13.2 %
Hence the maximum population growth rate if the population grows 283 in one year is 13.2%
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Which of these organic molecules function to help speed up biological reactions?
Answer:
c
Explanation:
Which of the following is defined as the ability to be changed or change according to circumstance
Answer:
flexibility
Explanation:
7. Based on what you know about Carbon Dioxide (look at the definitions section) and the Description of the Landscapes, how did the amount of Carbon Dioxide in the atmosphere increase over time? 8. Carbon Dioxide and Water vapor are greenhouse gases. How do greenhouse gases act like the glass in greenhouses?
Answer: Carbon dioxide levels today are higher than at any point in at least the past 800,000 years. Global atmospheric carbon dioxide concentrations (CO2) in parts per million (ppm) for the past 800,000 years. ... Carbon dioxide concentrations are rising mostly because of the fossil fuels that people are burning for energy. The large numbers of land animals raised to feed the Earth's growing population results in increased carbon dioxide levels in the atmosphere due to farming practices and respiration and methane production. This is another example of how human activity indirectly affects biogeochemical cycles in a significant way. 8. Gases in the atmosphere, such as carbon dioxide, trap heat similar to the glass roof of a greenhouse. These heat-trapping gases are called greenhouse gases. During the day, the Sun shines through the atmosphere. Earth's surface warms up in the sunlight. Greenhouse gases let the sun's light shine onto the Earth's surface, but they trap the heat that reflects back up into the atmosphere. In this way, they act like the insulating glass walls of a greenhouse.
Explanation:
Which of the following is NOT one of the Nervous System Functions?. Single choice.
(1 Point)
1.To detect changes and feel sensations
2. To initiate appropriate responses to changes
3. To organize information for immediate use and store it for future use
4. Absorb extra fluid between the cells
Answer:
4. Absorb extra fluid between the cells
Explanation:
The nervous system (SN) is a complex system that acts to receive sensory information through nerves, transmit this information via the spinal cord and finally process it in the brain. The SN has three main roles: sensory input, processing and motor output. The SN can be divided into the central nervous system (composed of the brain and spinal cord), and the peripheral nervous system (composed of those nerves located outside the brain and spinal cord). Moreover, the extracellular fluid between the cells comprises four types of fluids: 1-intravascular fluid (blood), 2-interstitial fluid, 3--transcellular fluid and 4-cerebrospinal fluid. The excess of these fluids is absorbed by the capillaries of the lymphatic system.
Which of the following is the greatest source of salt in the Earth's ocean water?
Α.
chemicals eroded from the Earth's crust
В.
water falling from the Earth's atmosphere
C.
ice from the Earth's glaciers
D.
carbon dioxide released by the Earth's sea animals
Answer:
A. chemicals eroded from earth's crust
Which direction does Xylem flow? Phloem?
Answer:
The movement of Xylem is unidirectional and phloem is bidirectional
Explanation:
The tension created by transpiration “pulls” water in the plant xylem, drawing the water upward in much the same way that you draw water upward when you suck on a straw.
Phloem transport is bidirectional because sucrose gets accumulated in the phloem tissue and absorbs water creating a high turgor pressure. ... Hence the water flows from regions of high turgor pressure to low turgor pressure and the direction can be upwards or downwards from the leaves based on the gradient.
Which is NOT an example of a natural environmental change?
A. a beaver dam
B. a hurricane
C. a volcanic eruption
D. a housing development
(Plz answer quick)
The image represents the mitosis process and it is important because:
A. produces gametes with half genetic information than parent cell.
B. allows processes as growing and repair tissues in the body.
C. does not produce cells with the same genetic information than parent cell.
D. always produce somatic cells with the same characteristics, it does not matter the organ in the body.
Answer:
B. allows processes as growing and repair tissues in the body.
Explanation:
Mitosis is a process where a single cell divides into two identical daughter cells. During mitosis one cell divides once to form two identical cells and the dividing cell's chromosomes are copied and then distributed equally between the two new nuclei of the daughter cells.
The major purpose of mitosis is for growth and to replace worn out cells. It also plays an important part in the development of embryos.
Mitosis is divided into five stages:
1. Interphase- during interphase, the DNA in the cell is copied resulting in two identical sets of chromosomes. Microtubules also extend from the centrosomes outside the nucleus
2. Prophase- during this phase, the sister chromatids in each chromosome pair up, the nuclear membrane dissolves and the mitotic spindle consisting of microtubules and other proteins extend across the cell between the centrioles which move to opposite ends of the cell.
3. Metaphase- the chromosomes line up at the centre of the cell and the mitotix spindle attaches to eachmof the sister c hromatids.
4. Anaphase- the sister chtomatids are pulled apart to each end of the cell by the mitotic spindle.
5. Telophase- at each pole, a full set of chromosomes gather together, a membrane encloses each chromosome, the cell pinches at the middle and then divides into two. This is known as cytokinesis.
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An ___________ is a trait or characteristic that helps a living thing, or organism, survive. These characteristics can be passed on from parent to offspring. They are passed on until most of the animals in the species have the helpful trait. Animals can also develop adaptations based on how they interact with the environment.
Answer:
Adaptation
Explanation:
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WHAT is direct counting
Answer:
Direct counting methods include microscopic counts using a hemocytometer or a counting chamber. The hemocytometer works by creating a volumetric grid divided into differently sized cubes for accurately counting the number of particles in a cube and calculating the concentration of the entire sample.
Explanation:
hope this help
A complex multicellular organism has different levels of organization. What is the order of the levels from least complex to most complex?
1organ system, organ, tissue, cell
2cell, tissue, organ, organ system
3cell, organ system, organ, tissue
4organ, tissue, cell, organ system
Answer:
A. tissue, cell, organ, organ system, organism
Explanation:
The order of the levels from least complex to most complex are 3cell, organ system, organ, tissue.
What is complex multicellular?The term multicellular organism is known to be a type of an organism that is made up of multiple cell.
These organisms are known to be complex due to the fact that they have different kinds of differentiated cells such as 3cell, organ system, organ, tissue.
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During a field trip, an instructor touched a moth resting on a tree trunk. The moth raised its forewings to reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory receptors had fired and triggered a neuronal reflex culminating in the contraction of certain muscles. A second student responded that the behavior might frighten predators. Which statement best describes these explanations?
Answer:
The first explanation refers to proximate causation, whereas the second refers to ultimate causation.
Explanation:
The first example refers to proximate causation, whereas the second example to ultimate causation.
What is ultimate causation?The ability of one variable to impact another is known as causality, also known as causality. The first variable might create the second or might change the incidence of the second variable.
Correlation, which shows how much two variables tend to rise or fall together, and causation are frequently misconstrued. Correlation does not, however, automatically imply causality. The variations in both variables could be caused by a third component, for instance.
A statistically significant association has been shown between yellow cars and a reduced accident frequency. Just because there are fewer accidents involving yellow cars does not mean that they are any safer. A third element, such as the person's personality type.
Therefore, The first example refers to proximate causation, whereas the second example to ultimate causation.
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What is used to protect your eyes in a laboratory?
A. Goggles
B. Gloves
C. An apron
D. A sink
Answer:
A. Goggles
Goggles are used to protect your eyes
Which of the following statements is true about niches?
I. New species can outcompete native species to fill a niche.
II. Extinction or emigration of a species can leave a niche vacant.
III. Some species occupy niches that no other species can fill.
Answer:
0
Explanation:
What option would be a good adaptation for an animal in a dense RAINFOREST? *
A. heavy body
B. ability to sprint
C. ability to blend with multiple colors and patterns
Answer:
c because they need to live instead of dying. bc from other bigger animals they can see it and eventually die so.