Answer:
Tonicity is the relative amount of solutes that is dissolved in solution which determine the direction and level of diffusion.
Explanation:
Tonicity is the relative amount of solutes that is dissolved in solution which determine the direction and level of diffusion. There are three types of tonicity i.e. hypertonic, hypotonic and isotonic solution. If a cell is placed in a hypertonic solution, water will leave the cell, and the cell will shrink due to more solute in the external environment. In an isotonic environment, there is no water movement occurs, so there is no change in the size of the cell. When a cell is placed in a hypotonic environment, water will enter the cell, and the cell will swell. due to lower amount of water present inside the cell.
Which of the following is not associated with the parasympathetic division of the autonomic nervous system (ANS)?
a. resting.
b. energy conservation.
c. emergency action.
d. digesting.
Answer:
a
Explanation:
The autonomic nervous system (ANS) is involved in breathing and heartbeat. Emergency action is not associated with the parasympathetic division of ANS. Thus, option c is correct.
What is ANS?ANS is abbreviated for the autonomic nervous system and is a sub-division of the peripheral nervous system. It includes actions that do not require consciousness and can regulate involuntary actions.
The ANS is sub-divided into sympathetic and parasympathetic nervous systems. The latter division is involved with resting, energy conservation, and digestion. It regulates the various body functions.
Parasympathetic nervous systems regulate the breathing rate, digestion, heartbeat, and blood flow, as they all are involuntary physiologic processes. They even show acute stress response but not emergency actions.
Therefore, option c. the emergency responses are not associated with parasympathetic nervous systems.
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The figure describes what kind of evolution method?
A. Natural selection
B. Gene flow
C. Genetic Drift
D. non-random mating
Answer:
gene flow
Explanation:
What is the average for the following set of measurements?
3.1 ml, 2.7 mL, 4.6 mL, 1.9 mL, 8.7 ml?
Answer:
The average is 4.2
Explanation:
AL COMPRAR UN PRODUCTO NOS REBAJAN UN 8% PAGUE 48.000 EUROS . ¿CUÁL ERA EL PRECIO ORIGINAL?
Answer:
V.O = 52.174.
Explanation:
¡Hola!
En este caso, considerando la información dada, es posible para nosotros inferir que al haber una rebaja del 8%, pagamos solamente el 92% del valor original del producto, esto quiere decir que debemos dividir el valor pagado, €48.000, por 0.92 con el fin de conocer dicho precio original:
[tex]V.O=\frac{48.000}{0.92}\\\\V.O=52.174[/tex]
¡Saludos!
State the names of two substances produced by photosynthesis.
Answer:
During photosynthesis, plants produce glucose from simple inorganic molecules - carbon dioxide and water - using light.
Explanation:
Examples of photosynthetic organisms include:
Plants.
Algae (Diatoms, Phytoplankton, Green Algae)
Euglena.
Bacteria (Cyanobacteria and Anoxygenic Photosynthetic Bacteria)
Questions
A macaw is a type of parrot with colorful feathers that flies about in the upper canopy of trees in tropical rainforests. Macaws have a diet which includes
fruits, leaves, nuts, and seeds of plants. Which of the following describes a biotic factor of the macaw's habitat that provides a survival advantage for
these birds?
o
The colorful feathers are lost and regrow each year
0
Some rainforest predators are able to climb trees
o
Trees provide shelter and a macaw
Answer:
Trees provide shelter
Explanation:
Firstly, a biotic factor refers to the living component of an ecosystem including the plants, animals and microbial species of one another. According to this question, a macaw is a type of parrot with colorful feathers that flies about in the upper canopy of trees in tropical rainforests. Macaws have a diet which includes fruits, leaves, nuts, and seeds of plants.
In order to ascertain that this birds species are in survival advantage, trees, which is one of the biotic factors found in the tropical rainforest, provide shelter for these birds.
Proteins have a variety of functions within a living cell. What are the possible function of proteins, and how can proteins be so divers?
Explanation:
hope it helps thank you❤
Question 9 of 30
Which of the following statements most accurately describes how water
moves through Earth and its atmosphere?
A. Liquid water falls to Earth as rain.
B. Gaseous water moves from the atmosphere to Earth's rivers and
oceans.
C. Liquid water enters the atmosphere from Earth's rivers and
oceans.
O D. Gaseous water falls to Earth from the clouds.
SUBMIT
Answer:
option A
Explanation:
liquid water falls to the earth as rain
Genotypes are the genes of an organism with alleles represented by letters of the alphabet. Phenotypes are an organism's observable inherited characteristics.
True or False?
Answer:
True
Explanation:
This is correct for both Genotypes and Phenotypes.
Answer:
True
Explanation:
Genotype is been represented by the letters of a certain gene
and Phenotype is the physical look of an organism
write a story about how warmer weather changes the biome you live in
which body system makes red blood cells?
A. single celled
B. multi celled
C. plant cell
D. animal cell
E. tissue
F. respiratory
G. transport system
H. nervous
I. digestive
J. muscular
K. skeletal
L. circulatory
M. cells
N. specialized
O. nutrients
P. grow
Q. respire
Answer:
In the human adult, the bone marrow produces all of the red blood cells, 60–70 percent of the white cells (i.e., the granulocytes), and all of the platelets. The lymphatic tissues, particularly the thymus, the spleen, and the lymph nodes, produce the lymphocytes (comprising 20–30 percent of the white cells).
Answer:
E
Explanation:
Red blood cells, most white blood cells, and platelets are produced in the bone marrow, the soft fatty tissue inside bone cavities. Two types of white blood cells, T and B cells (lymphocytes), are also produced in the lymph nodes and spleen, and T cells are produced and mature in the thymus gland.
Which kind of rock is most likely to contain a trilobite fossil?
1) sedimentary
2) igneous
3) metamorphic
4) plutonic
Explain how it formed. Thank you.
Answer:
1) sedimentary
Explanation:
Sedimentary rocks are formed by the accumulation and subsequent compression of sediments (i.e., minerals and once-living organisms known as fossils) on the Earth's surface. Almost all fossils are found within sedimentary rocks. Some examples of sedimentary rock that contain fossils include limestone, mudstone and shale. Rock layers are known as strata. The oldest layers containing the once-living organisms (which were fossilized as they formed) are found at the bottom, while the youngest layers are found at the top.
Classify each description of genetic variation in haploid gametes as a result of random assortment or recombination.
a. Homologous chromosomes independently segregate into haploid cells during meiosis.
b. A diploid cell that is heterozygous for two genes (Aa and Bb) located on different chromosomes produces AB, Ab, aB, and ab gametes in equal proportion.
c. Each chromosome in a haploid gamete may contain some genes from that individual's father and some genes from the mother.
d. Homologous chromosomes exchange genetic information with each other.
1. Random assortment
2. Recombination
A map that shows the distribution of white tailed deer in the northeastern US would be a(n)
map.
A. ordnance survey
OB. geologic
OC. environmental
OD. biogeographic
Reset Selection
Answer:
Biogeographic
Explanation:
The analysis of the geographic distribution of species, creatures, and other living things is known as biogeography. It's not only about habitation variations; it's also about the variables that cause differences in distribution.
Distribution of white tailed deer is an example of biogeography or Biogeographic research.
In the human body, is every organ a part of only one organ system? Or are some organs a part of two or more organ systems?
Answer:
I feel like in most cases, every organ in the organ system has only one specific function. But some organs may be a part of one or more organ systems. For example, the liver is a part of the digestive system but also plays an important role in the excretion system.
Hope this helps!
Humans are not the only animals that pollute the air.
Please select the best answer from the choices provided
A. True
B. False
Answer: Its True
Explanation: Cows and othere animals burps acctually have a green house gas called methane that is acctually bad for the envirment.
a) In how many cases in the genetic code would you fail to know the amino acid specified by a codon if you knew only the first two nucleotides of the codon?
b) In how many cases would you fail to know the first two nucleotides of the codon if you knew which amino acid is specified by it?
Answer:
a) 28 cases
b) 3 cases
Explanation:
a) From the table of genetic codes, there are 28 codons that specify more than one amino acid assuming only the first two nucleotides are considered. In these cases, one cannot outrightly specify the amino acid the genetic codes are coding for without knowing the last nucleotide of the codes. For example, UU can be for Phenylalanine or Leucine, CA can be for Histidine or Glutamine, etc.
b) From the table of genetic codes, the first two nucleotides of Arginine can be either of CG or AG, that of Serine can be either of UC or AG while that Leucine can be either of CU or UU. Only in these 3 cases would one fail to know which are the first two nucleotides assuming the name of the amino acids are given.
See the attached image for the genetic code.
What does the strength of friction
depend on?
A. The direction of the forces.
B. The types of surfaces and how hard the
mbjects are being pushed.
C. The color of surfaces and how hard they push.
D. Only how hard the objects are being pushed.
Answer:
the direction of force.
Do you think landowners should be compensated for their loss by the federal government for habitat conservation of endangered species?
Answer:
Yes
Explanation:
Unless they have a permit to inhabit endangered species. They shouldn't be caring for a endangered species, because they could be doing something to hurt it even if they don't mean to. By law they do confiscate them unless you have a permit.
Which of the following are likely to be studied by a biologist? Group of answer choices
A All of these
B What chemicals cause plant stems to lengthen or flowers to bloom?
C Why does the Texas horned lizard squirt blood out of its eyes? D How is a banded pipefish able to hide in its environment of seaweeds?
Answer:
A
Explanation:
About how much energy would be transferred to tertiary
consumers if the producers begin with 25,000 kcal?
Answer:
B. 25 kcal
Explanation:
Describe an example of the scientific method. Include any limitations this method has.
The enzyme choline acetyltransferase catalyzes the reaction between acetyl-CoA and choline resulting in the formation of the neurotransmitter acetylcholine. This enzyme is produced within the cell body of neurons, but the synthesis of acetylcholine occurs within the axon terminals. What best describes the axonal transport mechanism associated with this process?
Answer: Anterograde direction.
Explanation:
Choline acetyltransferase is an enzyme made in the body of a neuron and that needs to be transferred to the axon terminal to perform its function. Its function is to bind acetyl-CoA to choline to form the neurotransmitter acetylcholine.
The movement toward the cell body is called retrograde transport and the movement toward the synapse is called anterograde transport. So, since it is produced in the body of the cell and it has to go to the axon terminals, the choline acetyltransferase is transported in the anterograde direction.
This type of transport is responsible for the movement of organelles such as mitochondria, lipids, synaptic vesicles, proteins from a neuron cell body through the cytoplasm of its axon called the axoplasm. Because axons can sometimes be meters long, neurons cannot rely on diffusion to carry products to the end of their axons. Dynein is a motor protein involved in this retrograde axonal transport. Its light chains bind cargo, and its globular head regions bind the microtubule, "moving forward" along it.
la energía fotovoltaica emite gases de efecto invernadero?
Answer:
La energía solar fotovoltaica no emite gases tóxicos ni contaminantes, no produce residuos ni tampoco contamina el agua, por lo que su utilización para generar electricidad contribuye de forma efectiva para reducir el calentamiento global.
QUESTION 5
Diffusion involves the movement of particles from a region of
А,
low concentration to a region of high concentration through a partially permeable
membrane
B
c.
high concentration to a region of low concentration through a partially permeable
membrane
low concentration to a region of high concentration with or without passing through
partially permeable membrane
high concentration to a region of low concentration with or without passing through
partially permeable membrane
Answer:
High concentration to low concentration with or without a partially permeable membrane
Explanation:
Diffusion is the movement of particles from a region of high concentration (where there is alot of the particle) to a region of low concentration (where there is less of the particle) until it is evenly distributed.
The definition didn't state whether or not a partially permeable membrane was required.
It doesn't have to pass through a membrane. for e.g. spraying perfume at one side of the room and it is smelt on the other side. Meaning it diffused through the room. There was no membrane present.
It can also pass through a membrane for e.g diffusion of oxygen gas into cells (cells have membranes therefore the oxygen diffused through the membrane.)
How is a scientific theory developed?
Answer:
It is developed by a scientific method with observation and research
please help
Which part of the Sun can be seen only during a solar eclipse? O A. Chromosphere B. Convection zone O C. Corona D. Photosphere
Answer:
chromosphere
Explanation:
Its the outmost layer of the sun, the only part that is visible on an eclipse.
Answer:
chromosphere
Explanation:
It is only visible during total solar eclipses or with sophisticated telescopes.
How are data from a scientific experiment used?
A. As proof a hypothesis is true
B. As the answer to a scientific question
C. As evidence for a conclusion
D. As a guiding question for designing an experiment
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canicas y piedras son homogéneas o heterogéneas
por
favor
es
para
oy
ayúdenme
Answer:
Heterogéneas.
Explanation:
Se denomina "heterogénea" a toda aquella cosa que, por sus características particulares, no puede ser asimilada a otras sino que posee una individualidad particular que impide dicha asimilación. Así, por ejemplo, una piedra y una canica son heterogéneas entre sí, en tanto no poseen las mismas características y por lo tanto son claramente diferenciables.
15
MULTIPLE CHOICE QUESTIONS
PART A:
Choose the correct answer to each question from the alternatives A, B, C or D. Write +
of your choice in the box provided.
QUESTION 1
isted below are some characteristics of surface areas for gas exchange. Which one of
ecessary for effective gas exchange?
B.
Soft
Thin
D.
Surrounded by ca
Moist
Answer:
thin
Explanation:
so there is faster diffusion rate and also there will be short diffusion distance which therfore will lead to effective exchange:)