3 types Natural selection on polygenic traits can have three effects on phenotypic distributions are Directional selection, Stabilizing selection, Disruptive selection.
What is Directional selection?Directional selection occurs when individuals in a population with traits on one side of the mean outlive or reproduce more than those on the other.Stabilizing selection:When natural selection favors an average phenotype and selects against extreme variations, stabilizing selection reduces a population's genetic variance.When a population is exposed to environmental changes, its genetic variance shifts toward a new phenotype.Hence, 3 types of selection for a polygenic trait are Directional selection, Stabilizing selection, Disruptive selection.
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what is one difference between ion channels and ion pumps
Answer:
Ion pumps can be distinguished from ion channels on the basis that ion pumps actively transport ions against a concentration gradient, while ion channels allow ions to passively flow down a concentration gradient.
Explanation:
As a glacier moves across the land, it pushes soil and rocks in front of it and to the sides of it. What are the hills resulting from this soil called?
Answer: They are called Moraines
Explanation: A glacier is a large body of ice originating from land that constantly moves slowly over land. It occurs in almost all parts of the world and makes up about 3/4 of fresh water all over the world.
Glaciers constantly move on land and they do this under their own weight.
As a glacier moves across land, it pushes soil and rocks in front of it and to the sides of it.
The resulting hill formed as a result of this soil movement is called a Moraine.
A moraine is sometimes referred to as a glacial till. It is an accumulation of materials (usually soil and rock) left behind by a moving glacier.
What process is happening to this population of rabbits? (The answer is NOT natural selection. What is natural selection causing to happen?)
How would life on earth change if there was no clean water or air?
Answer:
With no water supply, all vegetation would soon die out and the world would resemble a brownish dot, rather than a green and blue one. Clouds would cease to formulate and precipitation would stop as a necessary consequence, meaning that the weather would be dictated almost entirely by wind patterns.
are food will die then the animals will die then we would die and the earth wouldn't be green no more it will be brown and bry there will be no clouds ether or grass
Which body system produces movement by contracting and relaxing?
Integumentary system
Muscular system
Skeletal system
Synovial joint system
What is the molecule called that all living things use for immediate
useable energy?
ATP, Sugar,fat, All of these
Hello there!
I think ATP would be the answer in this instance. See, ATP is the pure form of energy that cells prefer to use. Sugars and fats are good for energy, too - but sugars and fats must be converted into energy before use. So ATP is the only energy source listed that doesn't need to be metabolized before the cell can use the energy.
I hope this helps!!
How do the sun and moon affect the tides?
Answer:
The Sun causes tides just like the Moon does, although they are somewhat smaller. When the earth, Moon, and Sun line up—which happens at times of full Moon or new Moon—the lunar and solar tides reinforce each other, leading to more extreme tides, called spring tides.
Biology 1
Food web
Food chain
Hurry up pls
Using information from the cladogram and the data table shown below, which of the following best describes the evolutionary history of gorillas?
They are more closely related to salamanders than they are to lizards.
They evolved into a separate species as a result of bipedal motion.
They have jaws, lungs, hair, an amniotic membrane, and a tail but lack bipedal motion.
They share a more recent common evolutionary ancestor with leopards than they do with lizards.
Answer:
Several differences allow the human to walk erect on two legs with a striding gait rather than move in a knuckle-walking fashion like the gorilla. In the pelvis these differences include ...
A student created a table to compare animal adaptations. Based on the table, which
animal has a behavioral adaptation, and how does it give the animal an advantage?
Animal Adaptation
Duck Webbed feet
Squirrel Collects and stores food
The duck, because the behavioral adaptation allows it to catch prey.
The duck, because the behavioral adaptation helps it survive the environment.
The squirrel, because the behavioral adaptation provides food during winter.
The squirrel, because the behavioral adaptation to have more offspring.
Answer:
B
Explanation:
Ducks have the webbed feet so, they could swim in the water so they don't drown. That is animal adaptation to the environment.
Based on the given table, the animal with a behavioral adaptation is the squirrel, which collects and stores food. This adaptation gives the squirrel an advantage by helping it survive during times when food is scarce, such as during the winter months, which is in the third option.
What is behavioral adaptation?The behavioral adaptation of collecting and storing food is an important survival strategy for many animals, including squirrels. During times of abundance, such as the fall months, squirrels will collect and store food, such as nuts and seeds, in order to have a food source during times of scarcity, such as the winter months. This allows the squirrel to survive and avoid starvation during times when food is less readily available.
Hence, Based on the given table, the animal with a behavioral adaptation is the squirrel, which collects and stores food. This adaptation gives the squirrel an advantage by helping it survive during times when food is scarce, such as during the winter months, which is in the third option.
Learn more about the behavioral adaptation here.
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Why didn’t Henrietta get compensated for her cells
How would you describe symmetry in invertebrates?
Answer:
Invertebrates can have bilateral or radial symmetry, or they can be asymmetrical. Bilateral symmetry means that the animal is arranged in the same way on both sides. Radial symmetry means the body parts are arranged in a circle around a central point.
Please read careful and answer it and I will mark you
Answer:
The answer is a
Explanation:
the answer is a because as u add more ice to the icewater the water gradually increases in cold temputere and decrease in hot temperature.
A plant can be made resistant to weed killers through genetic engineering. how can genetic engineering create a plant resistant to the weed killer?
A. By exposing the plant to different weed killers
B. By modifying the plant’s cells to make new proteins
C. By harvesting the plant in a different season
D. By exposing the plant’s cells to ultraviolet radiation
What is metabolism?
the process of cell specialization
the process of turning glucose into energy
the process of cell division
the source of energy for the body
Answer:
metabolism is the process by which your body converts what you eat and drink into energy.
OR
Metabolism is the chemical reaction in body cells that change food into energy.
specific proteins in the body control the chemical reactions of Metabolism.
how are biodiversity and the cycling of matter related to maintaining ecosystem services
Many key ecosystem services provided by biodiversity, such as nutrient cycling, carbon sequestration, pest regulation and pollination, sustain agricultural productivity. Promoting the healthy functioning of ecosystems ensures the resilience of agriculture as it intensifies to meet growing demands for food production.
How do sensory nerves differ in function from motor nerves?
A. The CNS controls sensory nerves and the PNS controls motor nerves.
B. Sensory nerves carry information to the CNS, and the motor nerves carry information away from the CNS.
C. Sensory nerves carry information away from CNS, and motor nerves carry information to the CNS.
D. The PNS controls the sensory nerves and the CNS controls motor nerves.
please help!!!
Answer:
B.
Explanation:
When you touch something the sensory nerves carry it to the brain while your motor nerves tell you to touch it. So being carried to and from. I also got it right on the quiz.
Sensory nerves carry information to the CNS, and the motor nerves carry information away from the CNS. Therefore, the correct statement is option B.
What is central nervous system?The central nervous system (CNS) includes the brain and the spinal cord responsible for processing information received from peripheral nervous system (PNS) to generate appropriate responses. The brain is the most complex organ of the CNS, carries various functions, including sensation, perception, movement, etc.
Sensory nerves transmit information from sensory receptors, such as those in the skin, muscles, etc. to central nervous system (CNS) and sensory nerves are activated by various types of stimuli.
Motor nerves transmit signals from the CNS to muscles, and other effectors throughout the body. These signals are responsible for activation of muscle contractions, produce movements, and other responses.
Therefore, sensory and motor nerves both work together to perform physiological functions where sensory nerves carry information to the CNS, and the motor nerves carry information away from the CNS.
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What magnification will you generally start out using when scanning for parasites? A. 4X. B. 10X. C. 40X. D. Both A and B.
Answer:
Explanation:
D. Both A and B
The word “contract” in this paragraph tell you:
A. The muscles are involuntary
B. The muscles are aching
C. The muscles become larger
D. The muscle tighten inward
.
Greenhouse gases
are only produced naturally
trap ozone at Earth’s surface
keep Earth cool
absorb heat from the sun
Answer:
absorb heat from the sun
Explanation:
Greenhouse gases are specific type of gases that possess the ability to trap and emit heat/thermal energy in the atmosphere. They are able to do this because of their structure. Examples of greenhouse gases are carbon dioxide (CO2), methane (CH4), chlorofluorocarbon (CFC) etc and are mostly produced via anthropogenic activities.
Greenhouse gases are therefore, produced both artificially (by burning fossil fuels) and naturally and functions to absorb heat from the atmospheric surroundings.
Answer:
absorb heat from the sun
Explanation:
Greenhouse gases absorb heat from the sun.
Match the following vocabulary words. 1.ciliary musclesA transparent liquid which is located between the cornea and iris. 2.optic nerveMuscles attached to the lens to change its shape 3.coneA photoreceptor cell which functions best in bright light. It detects color. 4.vitreous humorThe transparent portion of the sclera at the front of the eye 5.retinaA special part of the choroid layer composed of colorful tissue 6.rodThe nerve connecting the eye to the brain 7.aqueous humorSpecialized cells located in the retina that receive light images 8.scleraA delicate light-sensitive membrane covering the inside of the eyeball 9.irisA photoreceptor cell which is sensitive to dim light, but detects no color10.corneaA fibrous material surrounding the eye to give it shape11.photoreceptorA transparent jellylike substance filling the eyeball
Answer:
1. Aqueous humor.
2. Ciliary muscles.
3. Cone.
4. Cornea.
5. Iris.
6. Optic nerve.
7. Photoreceptor.
8. Retina.
9. Rod.
10. Sclera.
11. Vitreous humor.
Explanation:
A sensory system can be defined as components of the central nervous system (CNS) which comprises of the brain, neural tissues or pathways and sensory neurons responsible for sensory functions, perception and processing sensory informations such as sound, light, heat, etc.
Basically, the central nervous system (CNS) interprete the neural signals that are generated from stimuli that are detected by the sensory system. The five (5) main sense organs in the sensory system are: skin, tongue, ears, nose and the eyes.
An eye can be defined as a specialized organ of sight with the capability to receive visual images that are subsequently transduced into neural signals and relayed to the brain for processing and interpretation. Some of the components of the human eye matched with their description are;
1. Aqueous humor: a transparent liquid which is located between the cornea and iris.
2. Ciliary muscles: muscles attached to the lens to change its shape.
3. Cone: a photoreceptor cell which functions best in bright light. It detects color.
4. Cornea: the transparent portion of the sclera at the front of the eye.
5. Iris: a special part of the choroid layer composed of colorful tissue.
6. Optic nerve: the nerve connecting the eye to the brain.
7. Photoreceptor: specialized cells located in the retina that receive light images.
8. Retina: a delicate light-sensitive membrane covering the inside of the eyeball.
9. Rod: a photoreceptor cell which is sensitive to dim light, but detects no color.
10. Sclera: a fibrous material surrounding the eye to give it shape.
11. Vitreous humor: a transparent jellylike substance filling the eyeball.
Answer:
1. A transparent liquid which is located between the cornea and iris - aqueous humor
2. Muscles attached to the lens to change its shape - ciliary muscles
3. A photoreceptor cell which functions best in bright light, it detects color - cone
4. The transparent portion of the sclera at the front of the eye - cornea
5. A special part of the choroid layer composed of colorful tissue - iris
6. The nerve connecting the eye to the brain - optic nerve
7. Specialized cells located in the retina that receive light images - photoreceptor
8. A delicate light-sensitive membrane covering the inside of the eyeball - retina
9. A photoreceptor cell which is sensitive to dim light, but detects no color - rod
10. A fibrous material surrounding the eye to give it shape - sclera
11. A transparent jellylike substance filling the eyeball - vitreous humor
Fitness is defined as the probability of an organism ............ and ............ in the environmen
in which it is found.
Which words correctly complete gaps 1 and 2?
A. photosynthesising and respiring
B. reproducing and respiring
C. surviving and reproducing
D. surviving and photosynthesising
Answer:
C
Explanation:
The sugar that is made during photosynthesis is ribose.
True
False
Answer:
True! :) Also, reminder drink some water and relax. <3
Explanation:
which heats up faster
Water or air
Answer:
Air
Explanation:
Air.
Why? Because air has a much lower specific heat capacity (Heat capacity - Wikipedia) per unit mass than water. Also, air is dispersed as a gas so that in any given volume the mass of air that would fill it is only a fraction of the mass of water that would fill the same volume. Take these two factors into consideration and you see that the amount of energy it takes to raise the temperature of a volume of air by one degree is minuscule compared to the amount of energy it takes to heat the same volume of water by one degree.
The one thing that is more challenging about air is actually getting the energy into it. Water is densely packed, whereas air molecules are much more widely separated, so that presents a heat conductivity challenge. However, if we’re talking about equipment specialized for heating air (i.e. a fan forcing air over heated coils) versus equipment specialized for heating water (flat plate, coils, pumps or no pumps, whatever), energy added at the same rate to each will heat an equivalent volume of air to a greater extent (i.e. raising temperature more quickly) that it will water.
4. This photograph was taken in 2004, 24 years after Mount Saint Helens erupted. Compare and contrast this photo with the previous three. What changes do you see in the biotic and abiotic factors? Does anything surprise you about this series of photographs?
Answer:
In this picture the ground is now completely covered in vegetation and trees are growing back all along the road and sides of the picture. Then there’s little flowers and grass and bushed all over the place. In the other pictures the ground was bare, with the second and third pictures having bushes and other little vegetation starting to grow. Changes in the Biotic Factors: There are now larger trees, there is grass, flowers, small bushes, and other small vegetation growing. Changes in Abiotic Factors: The ground is no longer dust and ash, The dead trunks and branches are covered in vegetation for the most part and are decomposing.
Explanation:
Brainliest Please?!
Select the statement that describes the major site where antiviral action is blocked by the protease inhibitors. Select one: a. The protease inhibitors block the ability of the human immunodeficiency virus from attaching and entering the cell membrane. b. The protease inhibitors block the uncoating process of the human immunodeficiency virus by binding to protease. c. The protease inhibitors block the nucleic acid synthesis of the human immunodeficiency virus. d. The protease inhibitors inhibit the late protein synthesis and processing of the human immunodeficiency virus.
Answer:
d. The protease inhibitors inhibit the late protein synthesis and processing of the human immunodeficiency virus.
Explanation:
Protease inhibitors are antiviral agents used to fight against pathogenic viruses such as retroviruses (e.g., human immunodeficiency virus, HIV) and RNA viruses (e.g., hepatitis C virus). Protease inhibitors can drastically reduce the viral load. Protease inhibitors may target 1-virus-encoded proteases which are responsible to produce functional proteins from polyprotein precursors and 2-processing structural proteins that are required for virus assembly. Some examples of protease inhibitors include, among others, ritonavir and indinavir, which are used in patients with HIV infection.
Where does The energy come from to heat the oceans
Answer:
the sun
Explanation:
Pepsin, trypsin and chymotrypsin are substances that affect reaction rates, those can be defined as
Answer: Enzymes
Explanation:
Enzymes are those proteins which participate in a chemical reaction without being consumed in the reaction. These enzymes work as a catalyst which speed up the rate of the chemical reaction. The enzyme is responsible for converting the substrate into a product. Pepsin is an enzyme present in the stomach it is activated by hydrochloric acid it is a peptic enzyme which converts proteins into peptones, trypsin and chymotrypsin are the enzymes secreted by the pancreas and it is responsible for digestion of proteins.
What is the phenotype of the sons in generation III? How do you know? amobia sisters
Please help!
10 points, it’s quick!
I will appreciate it
Question is:
Does friction affect the motion of an object and why?