Answer:
Promotes and maintains under which nature and humans can co-exist indefinitely
Explanation:
The ability to sustain something is known as sustainability.
ecology defines it as a means of configuring civilization and human activity so that society, its members and its economies are able to meet their needs and express their greatest potential in the present, while preserving biodiversity and natural ecosystems, planning and acting for the ability to maintain these necessary resources for future generations.
What is gravity’s role in plate tectonics?
Answer:
Gravity causes them to slide downwards
gravity causes
1. everything to be pulled to the center
2. earth's tectonic plates to move
3. one plate to go under another plate
4. the plate that went under to go into the mantle
realonomicsnet
msnucleusorg
tutor2unet
Drag each label to the correct location on the diagram.
Identify the structures of skeletal muscle.
fascicle
muscle
myofilament
muscle fiber
myofibril
The skeletal muscle, responsible for voluntary contraction is composed of 1) Myofilaments 2) Myofibrilles 3) Muscle fibers 4) Muscle (from the left to the right in the image)
What is the composition of the skeletal muscle?
The elements composing the skeletal muscle are,
Myofilaments ⇒ Actine and miosineSarcomere ⇒ It is the functional unit with the contractile apparatus. Composed of the Z band, A and I bands, and H zone.Myofibrilles ⇒ They have the Functional unitsMuscle fibers ⇒ Surrounded by endomysiumFascicle ⇒ Group of fibers surrounded by perimysium.Muscle ⇒ Group of fascicles surrounded by epimysium.The sarcomere is the contractile unit in a skeletal muscle. The thick myosin myofilaments are located in the central region of the sarcomere, which corresponds to the A band.
Thin filaments united to the Z lines, extends to the interior of the A band until they reach the border of the H band.
The I band is formed solely of thin actin filaments, belonging to two sarcomeres adjacent to a Z line.
When the muscle contracts, the muscular fiber gets shorter and thicker due to the reduction in length of the sarcomere.
The H line and the I band get shorter. The Z lines get closer to the A band, meaning that they get closer to each other. The A band keeps constant in length.This change is produced by movement mechanisms that involve a change in the relative position of actin and myosin filaments.For a better understanding about muscle contraction, look at the attached files.
From the left to the right,
1) Myofilaments
2) Myofibrilles
3) Muscle fibers
4) Muscle
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Fill in the blank with the correct abbreviation or symbol for the definition provided
Every day
The correct abbreviation for the term Every Day is Daily.
What is an abbreviation?An abbreviation is a term to refer to an orthographic convention that shortens the writing of a certain term or expression, and consists of the written representation of a word or group of words with only one or more of its letters.
According to the above, Daily is a correct abbreviation for the term Every Day since it expresses the same meaning with fewer letters. Additionally, this abbreviation is used in the medical field to tell patients when to take their medicine.
Doctors usually put Daily when their patient must take a medicine once a day.
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Choose any one of these properties of blood homeostasis to describe how and why substances in the blood and filtrate are secreted or reabsorbed.
Description:
The nephron uses the process of urine formation to maintain blood homeostases, such as pH balance, blood pressure, and osmotic pressure. Figure 1 shows the transport of substances between the filtrate in parts of the nephron and the blood in capillaries.
The substances in the blood are reabsorbed due to its usage in our body whereas the filtrate are secreted due to its harmful nature.
Describe how and why substances in the blood and filtrate are secreted or reabsorbed?The filtrate absorbed in the glomerulus and flows through the renal tubule, where nutrients and water are reabsorbed into capillaries that are used by the body in different processes. During this process, the waste and hydrogen ions pass from the capillaries into the renal tubule which is called secretion. Kidney is the organ where the absorption of nutrients and removal of waste from the blood occur.
So we can conclude that substances in the blood are reabsorbed due to its usage in our body whereas the filtrate are secreted due to its harmful nature.
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Which of the following organisms reproduces asexually?
OA. Human
OB. Bacteria
C. Spider
D. Lobster
Answer:
OB. Bacteria
Explanation:
Bacteria reproduce through a process known as Binary Fission, which is an asexual reproduction by a separation of the bacteria into two new bodies.
50 POINTS! HELP :D!!!
Carbohydrates are associated with several organelles in eukaryotic cells, particularly the Cell Wall, Cell Membrane, Chloroplast, Vacuole, and Smooth ER. Explain the relationship between each of the organelles listed above and carbohydrates.
The cell wall is composed of cellulose and pectin, cell membrane glycolipids and glycoproteins, chloroplast synthesize glucose, vacuole starch, and Smooth ER glycolipids.
What is the cell wall?The cell wall is a structure in plant cells that contain different carbohydrates such as cellulose and pectin, while the cell membrane contains glycolipids and glycoproteins.
Moreover, the chloroplasts synthesize a simple carbohydrate called glucose via photosynthesis, while vacuole stores starch and smooth ER is the processing center of glycolipids.
In conclusion, the cell wall is composed of cellulose and pectin, cell membrane glycolipids and glycoproteins, chloroplast synthesize glucose, vacuole starch, and Smooth ER glycolipids.
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Transpiration is
A. the process of water rolling down
hill.
B. when plants evaporate water into
the atmosphere from their leaves.
C. when oceans move water to
different climates.
Answer:
Should be B
Explanation:
prove me wrong
Answer:
b
Explanation:
for sure..
..........
If all of the carbon dioxide were
removed from the atmosphere,
what effect would this have on
plants?
A. They would no longer be able to
photosynthesize because carbon dioxide is a
reactant in the process.
B. They would adapt and change the
photosynthesis reaction to not need carbon
dioxide.
C. This would not affect the plants.
Answer: A.
Explanation:
Im learning about this too!
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Which of the following describes the correct order of energy conversions necessary to form electricity from a hydroelectric dam?
Flowing water → Electricity
Flowing water → Heat → Electricity
Flowing water → Kinetic → Electricity
Flowing water→ Heat → Kinetic → Electricity
Flowing water kinetic energy electricity - describes the correct order of energy conversions necessary to form electricity from a hydroelectric dam
One of the main parts of a hydroelectric facility is a hydroelectric dam that produces electricity. A hydroelectric dam is a substantial, artificial structure created to hold back a body of water. In addition to being built to generate hydroelectric electricity, hydroelectric dams are also built to manage flooding and river flow.
The water intake is located quite close to the base of the hydroelectric dam wall. It drops through the penstock inside the hydroelectric dam because to gravity. A turbine propellor, which is rotated by the flowing water, is located at the end of the penstock. The turbine's shaft ascends into the generator, which generates the energy.
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Option C: Flowing water → Kinetic → Electricity
look at the picture
where is food stored in non endosperm seed?
Explanation:
A lithosphere is the rigid, outermost rocky shell of a terrestrial planet or natural satellite. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of up to thousands of years or more
Which of the following are NOT criteria for the definition of a species? A. Produce fertile offspring B. Can Interbreed C. Share physiological characteristics D. Has the same DNA sequence
Answer:
C) Physical characteristics.
identify the phase in the life cycle lf small and big stars
Answer:
small: giant, white dwarf, neutron star
big: supernova, planetary nebula
Explanation:
Answer:
Explanation:
got it right
What is the function of estrogen in the menstrual cycle?
A. Causes ovulation.
B. Maintains the uterus lining.
OC. Causes the uterus to thicken.
D. Causes the egg to develop.
Reset Selection
Estrogen play two main functions such as prepare maturation of an egg to release during ovulation and thicken the lining of uterus. Thus all options are correct.
What is Estrogen Hormone?
It is a sex hormone released in the adrenal glands, ovaries and fatty tissue,
It is mainly involve in development of breasts in puberty and the growth of uterus lining during the menstrual cycle.
Regulation of menstrual cycle, growth of pubic and underarm hair, bone strength can be regulated.
There are three types of estrogen released from our body such as Estradiol (E2), Estriol (E3), Estrone (E1).
Estradiol is observed in women of childbearing age, estriol is produced during pregnancy where as estrone is released after menopause.
Thus all options are correct.
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Which of the following is the most permeable?
gravel
nonporous rock
clay
shale
Answer:
I think the correct answer of this question is first option. Gravel is the most permeable
Why is photosynthesis considered a light-dependent reaction?
Answer: Light reactions of photosynthesis are light dependent reactions. They are light dependent because for the process to start, a light ray should impinge on the chlorophyll and only then the reactions of photosynthesis begin.
Explanation:
Describe and explain how blood flows from the foot to the lungs.
Answer:
lungs:
The blood first enters the right atrium.
The blood then flows through the tricuspid valve into the right ventricle.
When the heart beats, the ventricle pushes blood through the pulmonic valve into the pulmonary artery.
The pulmonary artery carries blood to the lungs where it “picks up” oxygen.
It then leaves the lungs to return to the heart through the pulmonary vein.
The blood enters the left atrium.
It drops through the mitral valve into the left ventricle.
The left ventricle then pumps blood through the aortic valve and into the aorta. The aorta is the artery that feeds the rest of the body through a system of blood vessels.
Blood returns to the heart from the body via two large blood vessels called the superior vena cava and the inferior vena cava. This blood carries little oxygen, as it is returning from the body where oxygen was used.
The vena cavas pump blood into the right atrium and the cycle begins all over again.
Examine the Role of Lipids in Your Body Fat around organs phospholipids
Lipids are organic compound that are insoluble in water.
Lipids are derive from and give eg of lipids?
Lipids are derivative of fatty acids the example of lipids are oils, wax and steroids.
Role of lipids are:
1)They fuctions as store house of energy.
2) They are important signalling molecules
3) They serve as structural components of cell membranes.
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Phospholipids are essential structural components of brain and nervous tissue, of membranes throughout body tissues, and of lipoproteins—the runners of cholesterol and fats in the blood.
What is the role of fat and lipids in the body?
Within the body, lipids serve as an energy reserve, control hormones, transmit nerve impulses, cushion vital organs, and transport fat-soluble nutrients. Fat in food serves as an power source with high caloric thickness, adds texture and taste, and donates to satiety.
What are 4 functions of lipids in the body?The Roles of Lipids in the Body
Storing Energy. The extra energy from the food we eat is digested and incorporated into adipose tissue, or fatty tissue.Handling and Signaling. Insulating and Protective.Helping Digestion and Increasing Bioavailability.To learn more about Lipids , refer
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why is abortion important?
A mixture of 2 substances can be separated by BOTH the methods given below.
Method 1 - by sieving the mixture through a mesh
Method 2 - by adding water to the mixture and then filtering it through a filter paper.
What can the mixture be?
Answer:
one solid insoluble substance
one solid insoluble substance other different size.
According to the fluid-mosaic model of a cell membrane, the main component of a membrane is:______
Answer:
phospholipids
Explanation:
phospholipids are a type of lipid that make up the cell membrane they are amphipathic meaning they have both hydrophobic parts which do not readily mix with water and hydrophilic parts which mix with water
What has compounded the tremendous increase in human population in the last few decades?
houses
technology
tools
agriculture
The tremendous increase in human population in the last few decades is as a result of agriculture. That is option D.
What is the causes of over population?The population of a particular area can increase over a period of time due to the following reasons:
increased birth rates, decreased death rates,increased immigration, and decreases emigration.But if a population is given unlimited amounts of food, moisture, and oxygen, and other environmental factors, it will show exponential growth.
Therefore, the tremendous increase in human population in the last few decades is as a result of agriculture.
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The image below shows the process of DNA replication. Identify the components of the process
Answer:
See below.
Explanation:
The biological process of creating two identical copies of DNA from a single original DNA molecule is known as DNA replication.
A double helix of two complementary strands makes up DNA. These strands are split apart in the replication process. The method of semi-conservative replication uses each strand of the original DNA molecule as a template to create its counterpart.
This process is carried out by several enzymes which are listed below along with their activity
__
DNA Dependent DNA POLYMERASE is a class of enzymes that is responsible for all organisms' DNA replication processes. It accelerates DNA replication in the 5′ to 3′ range.The enzyme known as TOPOISOMERASE is involved in the over- or under-winding of DNA.HELICASE—Using the energy from ATP hydrolysis, which is characterized by the breakdown of hydrogen bonds between annealed nucleotide bases, helicases are frequently employed to separate the strands of a DNA double helix or a self-annealed RNA molecule.DNA GYRASE, a particular kind of topoisomerase, relieves strain caused by DNA helicase's unwinding action.DNA LIGASE- Joins the OKAZAKI FRAGMENT of the lagging strand and re-anneals the semi-conservative strands.PRIMASE - Primase catalyzes the production of a short primer, which is a ssDNA template-specific piece of RNA (or DNA in other species).REPLICATION FORK -
INITIATION: The beginning of DNA replication takes place at certain locations in DNA known as ori-sites or regions. Enzymes often recognize these locations and initiate the process. As opposed to C-G base pairs, which produce three hydrogen bonds, A-T base pairs only form two hydrogen bonds, making them easier to strand split. As a result, these sites are typically "AT-rich" (rich in adenine and thymine bases). Following the discovery of the origin, enzymes create a pre-replication complex that unzips the double-stranded DNA. The enzyme topoisomerase is involved in this process. ELONGATION: The 5'-3' activity of the DNA polymerase enzyme. Now, a new strand was created by DNA polymerase enzymes in the direction of 5′ to 3′ (note: the DNA template is read in 3' to 5' direction). RNA primers were simultaneously created by the primase enzyme and utilised by the polymerase to create new strands of RNA.Due to the 5′ - 3′ orientation of the DNA polymerase enzyme, two types of strands are formed.
LEADING STRAND - A DNA polymerase with high processivity that has the direction 5′ - 3′ (template strand 3′-5′) extends the continuous strand from the primer in the same direction as the replication fork that is expanding. One RNA primer is applied to the leading strand. LAGGING STRAND - It is the discontinuous strand whose synthesis is going in the opposite direction of the replication fork that is developing. Each primer extends the lagging strand intermittently to create Okazaki fragments. A low processivity DNA polymerase that is different from the replicative polymerase enters to fill the gaps after RNase eliminates the priming RNA pieces. Multiple primers are applied to the lagging strand, and then the Okazaki fragments are joined by the ligase enzyme, filling in the gaps.TERMINATION - Replication forks meet and end at several locations throughout the chromosome because eukaryotes start DNA replication at various locations; it is unknown how these are controlled. Termination necessitates the halting or blocking of the DNA replication fork's forward motion. When termination occurs at a particular locus, it includes the interaction of two elements: (1) a DNA sequence known as a termination site sequence, and (2) a protein that binds to this region to actually cease DNA replication.- Thank you.
The following two genotypes were crossed: AaBbCcddEe x AabbCcDdEe. What will be the proportion of the following genotypes among the progeny of this cross?
AaBbCcddEe × AabbCcDdEe
AA ---> 1/4
Aa ---> 1/2
aa ---> 1/4
Bb ---> 1/2
bb ---> 1/2
CC ---> 1/4
Cc ---> 1/2
cc ---> 1/4
Dd ---> 1/2
dd ---> 1/2
EE ---> 1/4
Ee ---> 1/2
ee ---> 1/4
For example
AABbCCDdEe = 1/4.1/2.1/4.1/2.1/2 = 1/128
The proportions of each genotype among the progeny of this cross are approximately as follows:
AaAa: 13.33%Aabb: 13.33%AaBb: 26.67%AaCc: 13.33%Add: 6.67%AaDd: 13.33%AEe: 6.67%AaEe: 13.33%aEE: 6.67%aaEe: 13.33%Punnett square analysis is needed to identify the genotype distribution among the progeny of the cross between AaBbCcddEe and AabbCcDdEe. This will make it easier for us to see the possible allele combinations of both the parents and their respective frequencies in the offspring.
The alleles for each basic genotype will be listed initially:
Parent 1 (AaBbCcddEe):
Alleles: Aa Bb Cc dd EeParent 2 (AabbCcDdEe):
Alleles: Aa bb Cc Dd EeWhen we construct Punnett square, we get:
| Aa | Aa |
| Bb | bb |
| Cc | Cc |
| dd | Dd |
| Ee | Ee |
------------------
Aa| AaAa | AaAa |
| Aabb | Aabb |
------------------
Bb| AaBb | AaBb |
| Aabb | Aabb |
------------------
Cc| AaCc | AaCc |
| Aabb | Aabb |
------------------
dd| Add | Add |
| add | add |
------------------
Ee| AEE | AEe |
| aEE | aEe |
------------------
The number of each genotype in the offspring:
AaAa: 4 (AaBbCcddEe)
Aabb: 4 (AaBbCcDdEe)
AaBb: 8 (AaBbCcddEe, AaBbCcDdEe)
AaCc: 4 (AaBbCcddEe, AaBbCcDdEe)
Add: 2 (AaBbccddEe)
AaDd: 4 (AaBbccDdEe)
AEe: 2 (AaBbCcddEE, AaBbCcDdEE)
AaEe: 4 (AaBbCcddEe, AaBbCcDdEe)
aEE: 2 (aabbCcddEE, aabbCcDdEE)
aaEe: 4 (aabbCcddEe, aabbCcDdEe)
Now, we find the proportion of each genotype:
Proportion of AaAa: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of Aabb: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of AaBb: 8 / 30 = 4/15 ≈ 0.2667 or 26.67%
Proportion of AaCc: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of Add: 2 / 30 = 1/15 ≈ 0.0667 or 6.67%
Proportion of AaDd: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of AEe: 2 / 30 = 1/15 ≈ 0.0667 or 6.67%
Proportion of AaEe: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Proportion of aEE: 2 / 30 = 1/15 ≈ 0.0667 or 6.67%
Proportion of aaEe: 4 / 30 = 2/15 ≈ 0.1333 or 13.33%
Therefore, the proportions of each genotype among the progeny of this cross are approximately as follows:
AaAa: 13.33%Aabb: 13.33%AaBb: 26.67%AaCc: 13.33%Add: 6.67%AaDd: 13.33%AEe: 6.67%AaEe: 13.33%aEE: 6.67%aaEe: 13.33%Learn more about Punnett square, here:
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Scientists set two main goals for the Human Genome Project. Which is NOT one of those goals?
A. identify ALL human genes
B. sequence ALL base pairs of the human DNA C. develop new fields of science to study DNA
To "develop new fields of science to study DNA"was never one of the aims of the human genome project.
What is the Human Genome project?The Human Genome project was an initiative that was set up around 1 Oct 1990 – 14 Apr 2003 with laboratory locations across United States, Canada, New Zealand, Great Britain whose major aim was to discover and thoroughly sequence all the genes in the human body.
This would help scientists to understand the human body body and help them to be able to study certain diseases that could arise from changes in any of the gene sequences in the human body.
Thus, to "develop new fields of science to study DNA"was never one of the aims of the human genome project.
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The Y chromosome is much smaller than the X chromosome. What does this mean?
A. The Y chromosome takes up much more space than the X chromosome.
B. The X chromosome has more genes than the Y chromosome.
Answer:
A. The Y chromosome takes up much more space than the X chromosome
Which goals are more effective since they depend on factors that you can control?
Answer:
Explanation:
Endurance. Effective goals are demanding but achievable, is a description of what goalsetting principale. Set challenging and realistic goals. To restore energy levelss within the muscles and recover from fatique is a function of what principle. Rest.
What features do
cardiac muscle cells
have when looking
under a microscope?
A. long and thin with striations and many nuclei
B. small, striated, and only 1-2 nuclei per cell
C. smooth, 1 nuclei, and connected by gap junctions
Explanation:
B. small, striated, and only 1-2 nuclei per cell
Answer:
B. small, striated, and only 1-2 nuclei per cell
Emily has been asked to find out how
Temperature affects photosynthesis in water
weed. She has been given the equation:
light energy
glucose + oxygen
Carbon
dioxide
+ water
What should she investigate?
She should investigate how temperature affects the rate of oxygen production.
PhotosynthesisDuring photosynthesis, green plants make use of inorganic products in the form of water and carbon dioxide to synthesize carbohydrates. The reaction only happens in the presence of solar radiation and oxygen is evolved as a by-product.
The process involves a series of chemical reactions. However, the summary of the whole reactions is represented by the following equation:
carbon dioxide + water ----> glucose + oxygen
Thus, if Emily is to find out how temperature affects photosynthesis. She will need to use a plant as a case study. One factor that can easily be used to measure the rate of photosynthesis is oxygen production by plants.
In other words, Emily will have to set up an experiment where a plant species will be subjected to the same environmental conditions, except temperature. Then, a suitable method will be used to measure the amount of oxygen produced. Any difference in the volume of oxygen produced can then be attributed to the effects of temperature.
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An external or internal cue or combo of cues that produces a response is called? A) motive B) observation C) reaction D) stimulus
[tex]\huge\underline{\underline{\boxed{\bm {Answer:}}}}[/tex]
○ [tex]\large\tt{A.)}[/tex] motive
○ [tex]\large\tt{B.)}[/tex] observation
○ [tex]\large\tt{C.)}[/tex] reaction
◉ [tex]\large\tt{D.)}[/tex] stimulus
[tex]\huge\underline{\underline{\boxed{\bm{Explanation:}}}}[/tex]
The cue or combo of cues that produces a response is called a [tex]\large \sf{stimulus}[/tex], which is a thing or event that causes a specific reaction in an organ or tissue.
A live organism's behavior that arises in reaction to an internal or external stimuli is known as a response. Anything that makes you react, like the smell of food making your mouth moisten, is a stimulus. Responses include bodily activities like muscle contractions, gland secretions, or mental processes. Thus option D is correct.
What combo of cues that produces a response is called?A stimulus is a thing or an event that prompts a particular response in an organ or tissue. It might be a single cue or a combination of cues.
The sensory input from the outside world consists of touch, pain, vision, smell, taste, sound, and balance (equilibrium). These sensory impulses become active in response to external changes. Touch and pain: The stimulus that can have a significant impact on the body is pain.
Therefore, An external or internal cue or combo of cues that produces a response is called a stimulus.
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