Answer:
A. Skeletal muscles control involuntary body functions.
Explanation:
Skeletal muscle is also known as voluntary muscle and it can be defined as a type of muscle connected with the skeleton by tendons, so as to form a mechanical system that enables the movement of the limbs and other body parts with respect to another.
Generally, skeletal muscles are only found in vertebrates.
Skeletal muscles doesn't control involuntary body functions, instead it controls voluntary body functions such as the movement of body parts.
In conclusion, an example of a muscle responsible for controlling involuntary body functions is cardiac muscle.
Answer: the answer is a
Explanation:
The top one is correcto
Hi, guys so I'm doing an experiment and need help finding out the types of variables. In my experiment, I am using a narrow straw, a wide straw, and some colored water to find out how different variables affect capillary action. I'm trying to find out what is the controlled variable, independent variable, and dependent variable.
Answer:
Controlled variable=coloured water
Dependant variable=amount of water
Independant variable=narrow and wide straw
Explanation:
Have a nice day
Answer:
The controlled variable is straws. Independent it the water and dependent is the capillary action.
Explanation:
The Independent variable is the water because its not chaninging thorughout the experiment and has no conqueunces on the other varibales. The controlled is the straws because you are controlling the different diameters in which the straws are (narrow/wide). Then as you change your controlled variable your dependent varible will change- which is the affect on capillary action.
Hope this helps.
Which of the following is an input for cellular respiration? a CO2 b. H₂O C. sunlight d O2
Answer:
Cellular respiration inputs are glucose and oxygen. The answer is O2.
Explanation:
Cellular respiration happens inside mitochondria. Meanwhile, the output is carbon dioxide, water, energy, and (ATP) adenosine triphosphate. It is a chemical process to extract nutrients and release waste substances.
What is the end product of glycolysis ?
Answer:
pyruvate
Explanation:
Explanation:
The final product of glycolysis is pyruvate in aerobic settings and lactate in anaerobic conditions. Pyruvate enters the Krebs cycle for further energy production.
what type of transport takes place when a protien allows an ion to enter a cell, but no additional energy is needed to make this happen?
Answer:
The answer is facilitated diffusion. It requires no energy because the ions are traveling down the concentration gradient. Facilitated diffusion is important for the regulation of ions in a cell. It also enables ions to pass across the hydrophobic layer of the cell membrane composed of phospholipids.
Which would make for a weak claim?
• a blog cited as the source
• a large sample size
• clear variables and controls
• multiple trials
Answer:
A
Explanation:
Blogs can have a lot of misinformation
What are the pigments in cyanobacteria used for?
Answer:
Pigments are useful to plants and other autotrophs
Explanation:
Not sure, but hope this helped a bit
After the completion of the polypeptide synthesis, the protein will be in its
structure.
A.primary
B.secondary
C.tertiary
D.quaternary
Answer:
B. secondary
Explanation:
Match the following iron-related terms with their definitions. - Dietary iron derived from hemoglobin and myoglobin in food - Iron from plant sources, supplements, and animal tissues other than that provided by hemoglobin and myoglobin - Iron-containing protein in red blood cells that transports oxygen and carbon dioxide - Percentage of blood made up of red blood cells - Disorder of iron metabolism that leads to abnormally high iron absorption and deposition of iron in the liver and heart A. Hemoglobin B. Heme iron C. Nonheme iron D. Hemochromatosis E. Hematocrit
Answer:
Thats easy!
Explanation:
A zombie apocalypse wipes out almost the entire human species before the zombie threat is eliminated. It appears that only a group of 100 people who were at a family reunion on an uninhabited island survived. They returned to the mainland completely unaware of what had happened to everyone. Answer the following questions regarding the few survivors that now begin to rebuild the human population.
Certain traits will have been lost from the gene pool forever. Some may be obvious, like people with red hair and double jointed thumbs. Others will be less obvious, like the ability to process cholesterol or being allergic to peanuts.
a.) Which of the following best describes the mechanism of microevolution that has altered the human gene pool? Explain.
b.) Despite an abundance of habitat, why will it be difficult for the human species to recover in numbers?
c.) A straggler with green eyes stumbles into the last remaining human outpost. The green eye trait did not exist in the outpost before her arrival, but it does now. What is the name of this mechanism of evolution? Explain.
Answer and Explanation:
A. Hello. You did not enter answer options. However, we can state that mutation, natural selection and genetic drift will be the microevolution mechanisms that will affect the gene pool of these humans. This is because the new environment and the small number of living beings, will make this population completely susceptible to all these evolutionary factors, which will affect, in different ways, the gene frequencies in a population.
B. As the amount of living beings and human beings has become very small, the world will have a low genetic diversity. This will make it difficult for these humans to adapt to the new environment and will make them more susceptible to possible diseases that will arise in this new environment. This will make these humans more fragile and make it harder for them to multiply.
C. The evolution mechanism is the Gene Flow. Gene Flow refers to the exchange of genetic information between individuals in a population, through the donation of gametes that occur in reproductive processes. In this case, we can consider that the individual with green eyes, upon arriving in the community with individuals without green eyes, began to reproduce descendants, who, upon receiving the gametes responsible for green eyes, began to populate this community with this characteristic.
Determine the correct order for the transmission of a signal through the nervous system.
I. Nerve impulse is triggered
II. Neurotransmitters diffuse across synaptic cleft
III. Receptors bind neurotransmitters
IV. Synaptic vesicles release neurotransmitters
A. I, IV, II, III, I
B. II, III, IV, I
C. IV, I, II, III, IV
D. I, III, IV, III, II, III
Answer:
A. I, IV, II, III, I
Explanation:
Living system can be defined as the internal systems of organisms and how materials circulate within organisms.
Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.
Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.
Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, metabolism, digestion, etc.
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.
Generally, the nervous system found in living organisms such as humans, comprises of two (2) major components or systems; a central nervous system (CNS) and a peripheral nervous system (PNS).
The correct sequential order for the transmission of a signal through the nervous system;
1. Nerve impulse is triggered.
2. Synaptic vesicles release neurotransmitters.
3. Neurotransmitters diffuse across synaptic cleft.
4. Receptors bind neurotransmitters.
5. The whole process is started all over again when the nerve impulse is triggered.
Answer:
A. I, IV, II, III, I
Explanation:
Which of the following describes the feedback that controls the blood pressure in the human
body?
O
When blood pressure drops, hormones from the pancreas tell the heart to beat
more strongly and increase the volume of blood flowing.
When blood pressure drops, hormones from the pancreas tell the heart to beat
more slowly and decrease the volume of blood flowing.
When blood pressure drops, receptors in blood vessel walls tell the heart to beat
more slowly to decrease the volume of flowing
ဝod
When blood pressure drops, receptors in blood vessel walls tell the heart to beat
more strongly and increase the volume of blood flowing.
Answer:
I believe D!!
Explanation:
hope this helps :)
The feedback that controls the blood pressure has ben the dropping of blood pressures has been mediated to the slowly decrease the volume of blood flowing. Thus, option C is correct.
What is blood pressure?The pressure of the blood in the circulatory system is often measured for diagnosis since it is closely related to the force and rate of the heartbeat and the diameter and elasticity of the arterial walls.
Heart failure is common in patients with high pressure. The body’s blood pressure is a measure of the pressures within the cardiovascular system during the pumping cycle of the heart.
In this case, the higher the cardiac output, the higher the volume of the blood in the vessels. Therefore, this increases the pressure in the vessels.
So, that when blood pressure drops, receptors in blood vessel walls tell the heart to beat more slowly to decrease the volume of the blood flowing. Thus, option C is correct.
To know more about blood pressure, follow this link-
https://brainly.com/question/4215574
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How does variation contribute to evolution?
A. Variation changes an organism over time, allowing them to evolve slowly as they grow.
B. Variation does not contribute to evolution.
C. Variation causes changes in the DNA, some of which are passed on, changing the species slightly each generation.
D. Variation produces a great variety of advantages for natural selection to select, through the process of Mitosis.
Answer:
I think its A
Explanation:
Variation usually results in changes in the DNA which are passed on the future generation and changing the species slightly each generation. The correct option is C.
What is variation?The disparity in the character traits of organisms in a population is referred to as variation.
Different traits can be introduced into an organism by genetic variations that alter gene activity or protein function.
Thus, the correct option is C.
For more details regarding variation, visit:
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Which substance, maple syrup or vegetable oil, has a higher viscosity? Explain how you know the answer.
Answer:
maple syrup
Explanation:
This is because viscosity is simply the resistance of a fluid to flow. A thicker fluid is more resistant than a lighter one. In this case maple syrup is thicker than vegetable oil thus more viscous than it.
A car burns gasoline as it moves down the road. Which energy transformation
is the car performing?
A. Kinetic energy to chemical energy and light energy
B. Potential energy to sound energy and nuclear energy
C. Chemical energy to kinetic energy and thermal energy
D. Thermal energy to kinetic energy and nuclear energy
Answer:
A
Explanation:
An important species of an Atlantic ocean community is the giant kelp, which helps form a suitable habitat for
fish and marine invertebrates.
Which of the following best describes the role of giant kelp in its ecosystem?
Choose 1 answer:
A dominant species
A pioneer species
A foundation species
An invasive species
Answer:
The giant kelp is a foundation species in its ecosystem.
Explanation:
The kelp acts as a home to the fish and the marine invertebrates, so they can be best described as a foundation species, or species that make an ecosystem suitable for a group of other species.
Answer:
from khan academy :)
In garden peas, the allele for tall plants is dominant over the allele for short plants. Imagine that a true-breeding tall plant is crossed with a short plant. Then one of their offspring is test crossed. Out of 20 offspring resulting from the test cross, about how many should be tall
Answer:
10
Explanation:
The allele for tall plants is dominant over the allele for short plants. A true-breeding tall plant is crossed with a short plant, and one of their offspring is test crossed. Out of 20 offspring resulting from the test cross, about 10 and should be tall.
Which molecules in your body do
not contain carbon atoms?
Genes, which are made of DNA
Proteins
Sugars
Water
I'm pretty sure its water
What energy using-process helps to cool the body
Answer:
Convection
Explanation:
convection is the process of losing heat through the movement of air or water molecules
Which of the following statements about biomolecules is true?
I. Biomolecules are the basis of life.
II. Biomolecules are involved in the metabolic processes of all living organisms.
III. Biomolecules are inorganic molecules.
Name five types of evidence that support the theory of evolution. Write one sentence for each, explaining why it demonstrates evidence. (10 points)
The five evidences that support the theory of evolution are: Fossils, Anatomy, Embryology, Molecular Biology (or Biochemistry), and Biogeography.
Fossils show the physical change in a species over time, suggesting evidence for evolution. For an example, we can trace the origins of dolphins and whales all the way to a four-legged, dog-like hoofed mammal from about 50 mya. These mammals were fish eaters and so decided to spend a lot of time in the water. In fact, they spent so much time in the water, that in a few million years, they evolved a longer body and webbed feet. Then another few million years passed and they swapped their webbed feet for flippers and swapped their tail of a fin. Eventually, we get a fish-like mammal that once walked on land.
For anatomy, or structures, there's three types of structure comparisons: Homologous structures, Vestigial structures, and Analogous structures (or Convergent Evolution). Homologous structures show similarities between the structures between species, but serve different purposes. For an example, all mammals share common features within their arms, such as having 5 fingers. However, they serve different purposes, from whale fins for swimming, to bat wings for flying, to human hands for grabbing and for using tools.
Vestigial structures were structures that once served a purpose and have been reduced in size/power to the point where it's useless. For an example, large theropods such as the T. Rex spent so much time evolving more jaw muscles and biting power, that they sacrificed their arm muscles for such power. This explains why their arms were so short.
Another example would be ratites, flightless birds such as ostriches, emus, and cassowaries (penguins and kakapos are from a different group). They spent so much time evolving powerful legs as well as evolving in size, that there was no need to fly when they could just run with their improved legs. And also the fact that they're too heavy to even fly anyways.
Analogous structures is the similar functions of structures between species, but have separately evolved these functions. For an example, the wings from insects, birds, bats, and pterosaurs are very similar in shape and can be used to fly, but they've evolved separately. For an example, birds use feathers to fly while bats and pterosaurs use/used (pterosaurs are extinct) membrane between their bones to fly. Although they do have strikingly similar evolutionary histories, with their ancestors starting off as tree dwellers, they've evolved their flight abilities separately during different earth periods.
Embryology is evidence for evolution by using embryos from different species to suggest a common ancestor. For an example, we can prove that we're more related to whales than to fish by using embryos. The fish embryo will evolve gills while the embryos of humans and whales will not, since we do not breath by extracting oxygen from water.
Molecular biology is a more recent way of providing evidence for evolution. By taking the DNA from cells from different species, we can get an estimate of how related one species is to another. The more similar amino acid sequences are between species, the more recent their common ancestor is. For an example, by comparing amino acid sequences between humans and chimpanzees, we get an estimated amount that we once shared a common ancestor seven million years ago. Without molecular biology, we would still be digging for fossils to find that number.
Biogeography is the geographic distribution of species on earth that can be explained by evolution. For an example, we can tell that Australia separated first from Pangea rather than Asia or North America since Australia doesn't have bears while the Asia and North America do, with China having pandas and North America having brown and black bears. And also with the fact that Australia is the only continent with monotremes (egg-laying mammals like the platypus).
Similar to biogeography, there's also direct observation, which is evolution that has happened in our own eyes. An example would be the underground London mosquito. Mosquitoes usually target birds like pigeons. But after an underground tunnel was built in London, some mosquitoes managed to get inside and instead of birds, they targeted, mice, rats, and of course, humans. After only a few hundred years, a mosquito from the underground tried to mate with another mosquito from land and they could not, simply because they were different species. This shows that their new choice of feeding on mammalian blood has actually altered their DNA and created a new species, during the existence of humanity!
Which of the following is NOT an argument used against genectically modified food?
(A) It is new technology that unnaturally breaks genetic barriers between species
(B) It might cause allergic reactions
(C) Humans should not be designers of life
(D) All of these arguments are used
Answer:
(D) All of these arguments are used
explain how oxygen is used by the body in cellular respiration and explain how carbon dioxide is a waste product of this process.
Explanation:
During cellular respiration the cell uses oxygen to break down sugar. Breaking down sugar produces the energy your body needs. ... Carbon dioxide is the waste product of cellular respiration that you breathe out each time you breathe. Blood picks up oxygen and releases carbon dioxide in the lungs.
hope it helps you pls mark me as branliest If you're kind enough¿Qué acciones podrían realizar para poder reducir los gases de efecto invernadero como el Co2?
AYUDA POR FAVOR
DOY CORONITA Y 5 ESTRELLAS
Explanation:
Ser conscientes del impacto de las emisiones de CO2. ...
Reducir el uso del coche privado. ...
Practicar una movilidad sostenible. ...
Aumentar nuestra eficiencia energética. ...
Consumir energía renovable. ...
Seguir una dieta con baja huella de carbono. ...
Convertirse en un consumidor sostenible.
Más elementos…
Skin color in a certain species of fish is inherited via a gene with four different alleles. Each allele confers a unit of color darkness such that having allele S1 confers one unit of color, S2 has two units, S3 has three units, and S4 confers four units. A fish of this type has the genotype S1, S3, and its mate has the genotype S2S4. What proportion of their offspring would be expected to have five units of color
Answer:
25% of the progeny with genotype S3S4 is expected to express 5 units of color
Explanation:
Available data:
Skin color in a certain species of fish is inherited via a gene with four different allelesallele S1 confers one unit of color, S2 has two units, S3 has three units, and S4 confers four units.Cross:
Parentals) S1 S3 x S2S4
Gametes) S1 S3 S2 S4
Punnett square) S1 S3
S2 S1S2 S2S3
S4 S1S4 S3S4
F1) 1/4 = 25% of the progeny is expected to be S1S2, expressing 3 units of color ⇒ allele S1 provides one unit, allele S2 provides two units of color
1/4 = 25% of the progeny is expected to be S2S3, expressing 5 units of color ⇒ allele S2 provides two units, allele S3 provides three units of color
1/4 = 25% of the progeny is expected to be S1S4, expressing 5 units of color ⇒ allele S1 provides one unit, allele S4 provides four units of color
1/4 = 25% of the progeny is expected to be S3S4, expressing 7 units of color ⇒ allele S3 provides three units, allele S4 provides four units of color
25% of the progeny with genotype S3S4 is expected to express 5 units of color
ways in which soil organisms such as earth worms improve soil fertility
Answer:
by eating organic matter in the soil and excreting castings that are rich in nitrogen, phosphorus, and potassium which make the soil nourishing.
The fruit of the mistletoe, a parasitic angiosperm, is a one-seeded berry. In members of the genus Viscum, the outside of the seed is viscous (sticky), which permits the seed to adhere to surfaces such as the branches of host plants or the beaks of birds. What should be expected of the fruit if the viscosity of Viscum seeds is primarily an adaptation for dispersal rather than an adaptation for infecting host plant tissues
Answer:
We should expect that the fruits should grow in population and spread more easily.
Explanation:
Like the relationship between bamboo and pandas, the relationship between the seeds and the beaks of birds should allow the seeds to spread to other areas more easily that would otherwise be a very gradual process if the seeds did not evolve its viscous ability.
The molecules of water move farther apart in the water cycle and water changes from the?
Explanation:
I think the ans is evaporation
A researcher is examining a sample of smooth muscle tissue under a microscope. Which of the following would correctly describe what he sees? (2 points)
Short cells with no striations and one nucleus per cell
Long cells with no striations and one nucleus per cell
Long cells with striations and no nuclei
Short cells with striations and no nuclei
Please list answers below
answer please urgent
Answer:
I think option (b) is right answer
