Answer:
The cytoskeleton is similar to the skeletal and muscular system . They both provide structure and allows for movement within the cell . The cell membrane is similar to the integumentary system . They both separate and protects the internal structures from the external environment and it regulates water loss . The mitochondria is similar to the digestive system
Explanation:
:D
Within a toad population, brown spots (B) are dominant to green spots (b).
The table below shows the phenotype distribution of 250 toads in a
population over several generations. Using the data and Hardy-Weinberg
equations (p2 + 2pq +92; p + q =1) determine the allele frequency for band
explain what is happening in the population.
Answer:
The answer is B: been reduced three fold and the population is experiencing genetic drift
Explanation:
I took the exam.
Answer:
C: The frequency of b has been reduced three-fold. The population is experiencing genetic drift.
Explanation:
I just took the test
How can an organism's environment affect its traits?
First, I read that so incorrectly. Awkward.
An organism's environment affects its physical and self traits by making them adapt. Charles Darwin had discovered this theory with the finches. Places that were harder to get food would make these finches physical change over evolution to help them survive. It changes the animals habits depending on their resources. If a bird eats berries but there is no berries then the bird will have to change its diet or it will die.
True or false: the tail portion of phospholipid molecule is hydrophobic
Answer:
true
Explanation:
The fatty acid chains are the uncharged, nonpolar tails, which are hydrophobic. Since the tails are hydrophobic, they face the inside, away from the water and meet in the inner region of the membrane.
The statement "the tail portion of the phospholipid molecule is hydrophobic" is definitely true.
What is Phospholipid?Phospholipid may be defined as an amphipathic molecule that is constructed from four components. They are fatty acid, a platform to which fatty acids are attached, a phosphate, and an alcohol attached to the phosphate.
The molecule of phospholipid has a polar head and a non-polar tail. The polar head is known as hydrophilic and a non-polar tail is known as hydrophobic.
Such types of tails move away with water, hence they are significantly found at the inner side of the membrane and form a type of barrier.
These tails of phospholipids are typically uncharged which expel water and separates the internal contents of the cell from its outer environment.
Therefore, the statement "the tail portion of the phospholipid molecule is hydrophobic" is definitely true.
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10. A cat that has never known human companionship is called:
a) domesticated b) adapted c) feral___
Answer:
A cat that has never known human companionship is called (C) feral
what is Refrigeration in food preservation
Answer:
Refrigeration in Food Preservation and Processing ... The aim of all food preservation methods is to slow down processes that cause deterioration of quality and wholesomeness. Refrigeration applications are equipment that transfers heat from the product or enclosure (refrigerated cabinet or room) to the colder refrigerant.
Answer:
The aim of all food preservation methods is to slow down processes that cause deterioration of quality and wholesomeness. Refrigeration applications are equipment that transfers heat from the product or enclosure (refrigerated cabinet or room) to the colder refrigerant
Explanation:
which is an example of a secondary energy source
Answer:
Explanation:
Secondary energy resources are those which do not occur naturally but which are obtained from one or more of the primary energy resources. Example: Petrol or gasoline, electrical energy from coal burning, hydrogen obtained by electrolysis of water etc. Non-commercial source of energy: Firewood, cow dung , and vegetable wastes.
what is one thing that the fossil record DOES NOT show?
A)clues to how organisms lived in the past
B)a step by step progression for evolution
C)the color of ancient organisms
D)clues about the past climate of Earth
Answer:
D)clues about the past climate of Earth
Explanation:
The fossil record certainly has gaps, mostly because the conditions required to create fossils have been rare ever since life began on Earth. A very small percentage of animals that have lived and died ever became fossils. Thus, many pieces of the puzzle are missing; some will never be found.
"Noseblindness" is a form of habituation. It could also be considered to be sensory adaptation.
True or false
Answer:
True
Explanation:
what is a safe method to heat alcohol/methylated spirits?
Answer:
Explanation:
Boil a pot of water that has been tested with a stainless steel dish that sits adequately on top of the pot, without falling in. When the water boils, turn off the stove, which eliminates the ignition source, then pour your ethanol into the bowl, and place it on top of the hot water pot
Answer:
Boil a pot of water that has been tested with a stainless steel dish that sits adequately on top of the pot, without falling in. When the water boils, turn off the stove, which eliminates the ignition source, then pour your ethanol into the bowl, and place it on top of the hot water pot.
Explanation:
Cars A, B, and C are traveling counterclockwise at the same constant speed around the track shown below. Interpret the diagram and answer the question below. What
car will change velocity first?
A. A
B. B
C. C
D. There would be change in velocity is the speed is constant
Answer:
Its B
Explanation:
because the car would have to SLOW down and change velocity while it turns
Answer:
B
Explanation:
Car B will have to slow down when turning the corner.
I took the quiz! I hope this helps! :D
What kinds of diseases can vaccinations prevent?
genetic diseases only
bacterial diseases only
viral diseases only
any infectious disease
Any infectious disease (genetic, bacterial, and viral) can be prevented by vaccinations. Therefore, option D is correct.
Vaccinations are primarily designed to stimulate the immune system and provide protection against specific pathogens that cause diseases. They work by introducing harmless components of the pathogen, such as inactivated or weakened viruses or bacteria, or their components (antigens), into the body.
This exposure allows the immune system to recognize and mount an immune response against the pathogen without causing the actual disease.
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Under which of these conditions would scientists use the polymerase chain reaction (PCR) before they analyze a DNA sample?
A
The DNA sample comes from a bacterium or virus,
B. The DNA sample has been cut into fragments by restriction enzymes.
COnly a small amount of the DNA sample is available,
D.
The DNA sample includes regions that are transcribed into mRNA,
Answer: C
Explanation:
A specific DNA segment is amplified via PCR from a complicated combination of starting material, commonly referred to as template DNA, hence option C is correct.
What is the polymerase chain reaction (PCR)?The reaction's simplicity and the relative case of the practical manipulation procedures are what's behind it. The reaction needs some knowledge of the flanking DNA fragment's sequence in order to be amplified.
Taq polymerase is the name of the heat-tolerant bacterium from which the DNA polymerase normally used in PCR was derived (Thermus aquaticus). T. aquaticus resides in hydrothermal vents and hot springs.
The primers are used in accordance with the sample or target DNA. The procedure, which entails numerous cycles in which copies are created, likewise uses DNA and Taq polymerase.
Therefore, the three fundamental phases are "denaturation," "annealing," and "extension."
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During sexual reproduction, the offspring inherit their traits from __________. both parents themselves the father the mother
Answer:
Both parents
Explanation:
Punnett squares will show that for each trait (eye color, hair color, hair type, etc.) there are at least 3 different options (for a 2x2 Punnett square). I've also seen 4x4 Punnett squares where two traits are used.
What is a source of variation in insect color
The sensory receptors in the nose and tongue are stimulated by......
chemicals
temperature
light
sound waves
Answer and I will give you brainiliest
Answer:
chemicals
Explanation:
The nose and the tongue are two of the five sensory organs (others being skin, eyes, ears). These organs contain certain cellular structures called SENSORY RECEPTORS, which respond to different stimulus in the environment.
Nose and tongue are two organs that possess a type of sensory receptor called CHEMORECEPTORS. Chemoreceptors are receptors that respond to chemical stimuli. In other words, the receptors in the nose and tongue are stimulated by chemical substances e.g. food chemicals for TONGUE, chemicals in air for NOSE.
Type of compound for enzyme
Does a mom or dad ever give more DNA to a baby than the other parent? Why?
The mother actually gives more DNA to a baby more than the father because of the little organelles, aka the mitochondria that live inside your cells are only to be received from your mother.
But in DNA, it can vary who's side you can get more of, and in some rare cases, equally. This is because dominant genes carry out around 75% of the time and genes that are recessive can carry out 25% of the time, depending on the genetics of both the mother and the father. Example, brown eyes are a dominant gene over blue eyes, so there is a 75% chance that the baby will have brown eyes and a 25% chance that the baby has blue eyes if one parent has the brown eye gene and one has the blue eye gene.
I hope this helped!! :D
What are the main factors that affect an ocean current?
geographical features
Wind caused by unequal heating of the earth
none of the choices
Coriolis effect
Answer:
wind causes by unequal heating of the earth
Explanation:
Because,ocean currents are driven by wind, water density differences and tides.Oceanic currents discribe the movement of water from one location to another.
Hope it helps...
stelar system in Lycopodium
Answer:
I didn't understand the question..but here is the definition
Explanation:
Definition of Stelar System:
According to the older botanists, the vascular bundle is the fundamental unit in the vascular system of pteridophytes and higher plants. ... Thus the stele is defined as a central vascular cylinder, with or without pith and delimited the cortex by endodermis.
Which of the following events is caused by magnetic force?
Answer:
A magnetic storm is a period of rapid magnetic field variation. It can last from ... When these events occur, we can experience a truly large magnetic storm
Explanation:
The event that should be resulted by the magnetic force is the needle of a compass points toward Earth's North Pole.
What is a magnetic force?It is treated like the attraction or the repulsion that should occur between the particles that are electrically charged due to its motion.
It is termed as the basic force that should be held responsible for the impacts like action related to the electric motors and the iron magnets for the attraction purpose.
Therefore, the above should be the answer.
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PLEASE HELP
WILL MARK BRAINLIEST
Explanation ProjectSupreme:
It is the food chain going down to envole.
Answer:
what is a food chain?
Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism
seaweeds -----> crabs ------>herons
step-1: A food chain always starts with a producer This is an organism that makes its own food Most food chains start with a green plant because plants can make their food by photosynthesis
step-2: Second step of a food chain always starts with a omnivore or herbivore
herbivores
A herbivore is an animal that gets its energy from eating plants and only plants. Omnivores can also eat parts of plants but generally only the fruits and vegetables produced by fruit bearing plants
omnivores
An omnivore is an animal that has the ability to eat and survive on both plant and animal
step-3: Third step of food chain carnivores or omnivores
carnivore
carnivore meaning "meat eater is an animal whose food and energy requirements derive solely from animal tissue or meat
omnivores
An omnivore is an animal that has the ability to eat and survive on both plant and animal
Explanation:
What is responsible for movement within a cell
Answer:
Explanation:
In addition to playing this structural role, the cytoskeleton is responsible for cell movements. These include not only the movements of entire cells, but also the internal transport of organelles and other structures (such as mitotic chromosomes) through the cytoplasm
Facilitated diffusion is......
A. The opposite of passive transport
B. The same as passive transport
C. Does not require energy to happen
which organ found in plant cell
Answer:
Chloroplasts?
Explanation:
search it up
Answer:
Vacuole <Mitochondria
Explanation:
A forensics expert has obtained a sample of human blood from a crime scene. How can DNA fingerprinting be useful for identifying the person who left
the blood at the crime scene?
A by identifying the sequence of nucleotides in the DNA of blood cells
B. by comparing DNA from the blood cells with DNA from suspects
C. by identifying certain genetically controlled traits of suspects, such as eye shape and blood type
D. by comparing karyotypes made from blood cells at the crime scene and blood cells from suspects
Answer:
B - by comparing DNA from the blood cells with DNA from suspects!
Explanation:
DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation.
A DNA sample taken from a crime scene is compared with a DNA sample from a suspect.
If the two DNA profiles are a match, then the evidence came from that suspect. (from www.genome.gov )
Hope this helps! :]
A forensics expert has obtained a sample of human blood from a crime scene, DNA fingerprinting may be useful by comparing DNA from the blood cells with DNA from suspects, which is option B.
What is DNA fingerprinting?DNA fingerprinting is a technique used to identify individuals based on their unique DNA profiles, and by analyzing the sequence of nucleotides in an individual's DNA, forensic scientists can create a DNA profile that is unique to that individual. So to identify the person who left the blood at the crime scene, forensic scientists would analyze the DNA in the blood sample and create a DNA profile, and then find out the criminal based on the DNA fingerprinting.
Hence, DNA fingerprinting may be useful by comparing DNA from the blood cells with DNA from suspects, which is option B.
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name the four major groups in the plant kingdom and discuss the major evolutionary trends across the groups
Answer:
The kingdom Plantae consists of four major plant groups on land: bryophytes (mosses), pteridophytes (ferns), gymnosperms (cone-bearing plants), and angiosperms (flowering plants). Plants may be categorized as vascular or nonvascular. A vascular plant has tissues for transporting water or sap. Nonvascular plants do not.
Need as soon as possible
Answer:
100% will be black
Explanation:
black is a dominant trait
which scenario would most likely result in genetic drift?
Answer:
a population of moose living at the base of a vilcano is nearly wiped out when the volcano eruptes
Explanation:
Answer:
a decrease in genetic diversity
Explanation:
Based on the absolute dating of the rock layers in this photograph, what
could a scientist conclude about a fossil found in area A?
1.4 million
years
2.1 million
years
D
A. It is between 1.4 million and 2.1 million years old.
B. It is less than 1.4 million years old.
0 ООО
C. It is more than 2.1 million years old.
D. It is exactly 1.4 million years old.
Answer:
B
Explanation:
It is less than 1.4 million years old
Based on the absolute dating of the rock layers in this photograph, a scientist could conclude about a fossil found in area A is that it is less than 1.4 million years old.
What do you mean by Fossils?Fossils may be defined as the dead and organic remains of the past organisms which are preserved deep in the soil over a long period ago.
The fossil found in area A is very recent from the evolution point of view. The deeper the layer, the oldest is the fossil.
Area A of the fossil is synthesized after the time period of 1.4 million years ago, hence the fossil present in that area would be less than 1.4 million years old.
Therefore, based on the absolute dating of the rock layers in this photograph, a scientist could conclude about a fossil found in area A is that it is less than 1.4 million years old.
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With what force will a car hit a tree if the car has a mass of 4,000 kg and an acceleration of 4m/s2?
Explanation:
F = ma
= 4000 × 4
= 16000Joules
or 16KJ