Answer:
"Sun is the ultimate energy source for all living organisms."
✴This is because plants need sunlight to make food through photosynthesis. This food is consumed by the animals and human-beings. Carnivores indirectly depend on plants for their food. So, if Sun is not there there will be no life on earth.
✴Secondly, sunlight is a good source of Vitamin-D.
Vitamin D is essential for strong bones, because it helps the body use calcium from the diet. Traditionally, vitamin D deficiency has been associated with rickets, a disease in which the bone tissue doesn't properly mineralize, leading to soft bones and skeletal deformities. So if sunlight is not there it can result in loss of Vitamin-D which can cause deficiency diseases.
✴If sunlight is not there there will be no day on Earth. Light will not reach our Earth. Every time there will be only darkness.
Answer From Gauth Math
mention 6 substances secreted by the body
Answer:
Saliva
Lipase
Amylase
Trysin
Pepsin
Erepsin
Explanation:
Substances? Just any substances?
Which effects are factors in long-term climate change? Check all that apply.
Answer:
Earth's orbit around the Sun . Right
ice forming on a lake . Wrong
solar energy . Right
volcanic eruptions. Right
thunderstorms. Wrong
Explanation:
Which statement explains how a DNA mutation causes sickle-cell anemia?(1 point)
Answer:
DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape
Explanation:
Sickle cell mutation is a mutation that affect the production of red blood cell that is needed for the transport of oxygen in the bloods stream.
sickle cell mutation is a result of change in the amino acid which are building blocks of the protein hemoglobin.
The protein is what gives red cells their color, it has two subunits. The alpha
and beta subunit. There is a change in the arrangements of amino acid sequence and that is the basis for the sickle cell shape, beta subunit has valine an amino acid at position 6 instead of the glutamic acid. This alteration results in sickle cell problems that occur in people.
Answer:
Explanation:
From the options:
The DNA mutation increases the number of amino acids in hemoglobin, which causes a change in the shape of red blood cells.
The DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape of red blood cells.
The DNA mutation decreases the number of amino acids in hemoglobin, which causes a change in the shape of red blood cells.
O The DNA mutation prevents formation of hemoglobin, the absence of wirich causes a change in the shape of red blood cells.
The correct answer would be that "The DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape of red blood cells. "
The sickle-cell anemia is caused by a change in the amino acid sequence of the hemoglobin - specifically, as a result of the substitution of the sixth amino acid, glutamic acid, by valine in the beta subunit of the proteins that make up the hemoglobin. A single base substitution causes glutamic acid to be changed to valine.
The normal hemoglobin is disc-shaped and is able to effectively carry oxygen in the blood, unlike the sickle-cell hemoglobin which has the sickle shape and is not able to effectively carry oxygen in the blood.
who discovered micro organisms
Robert Hooke is the person that discovered Micro organism
Answer:
An English architect, "Robert Hooke" discovered micro organisms in 1665.
Hope this helped!
Have a nice day:)
BRAINLIEST would really help me:)
Need help write some for me to put in my book
Answer:
Users encounter the error message ‘The Third-party INF doesn’t contain Digital Signature Information’ when they are trying to install third-party drivers on their computer. There are usually two types of drivers present i.e. third-party (these are not developed by manufacturers) and official drivers
Eye color is an example of 1. Transcriptional control 2. gene expression 3. translational control 4. gene regulation
Eye color is an example of Gene expression
Most fresh water fish are hypertonic, meaning their body cells contain more salt than the surrounding water. Since osmosis should push water into their cells, why don't they explode? They don'Ât drink any water because they get so much from osmosis. They have adapted to live with high osmotic pressure. They urinate a lot, so the water does not build up. Their cells have adapted to absorb salt. All of the above
Answer:
They urinate a lot, so the water does not build up.
Explanation:
Freshwater fishes are fishes that live in freshwater habitat i.e. little or no salt. This means that the fishes are hypertonic (have more salt) to their external environment. Due to their hypertonicity, freshwater fishes tend to take in more water via osmosis.
Freshwater fishes, however, do not explode despite this phenomenon because they pass out the excess water via urine waste. Freshwater fishes urinate a lot, hence, the absorbed water does not build up in their bodies.
The plasma membranes of the __________ bear enzymes referred to as brush border enzymes, which complete the digestion of carbohydrates and proteins in the small intestine."
Answer:
Microvilli
Explanation:
The microvilli are microscopic in nature, they form projections on cell membranes which helps to increase the surface area of the membrane, which further enables diffusion. Microvilli are mostly found in the small intestine and they work together with villi to increase the absorption of nutrients in the small intestine.
In addition, they also involved in the secretion of enzymes called brush border enzymes that aids the easy and complete digestion of carbohydrates and Protein. One of such enzymes are the glycosidases which digest carbohydrates.
Can someone please help me!!???
Explanation:
plant cell only
nucleuscell wallchloroplastgolgi apparatus cell membraneribosomeboth plant and animal cells
nucleuscell membraneribosomegolgi apparatus(c) State two differences between this mesophyll cell and a root hair cell. (2 marks)
Answer:
Root hairs are where most water absorption happens. ... The function of root hairs is to collect water and mineral nutrients that are present in the soil and take this solution up through the roots to the rest of the plant. As root hair cells do not carry out photosynthesis they do not contain chloroplasts.
Explanation:
What is most similar about the alkaline earth metals?
Answer:
They are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). The elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure
Please help! Show work please!
Answer:
7. 18m = 1800 cm = 18×10² cm
8. 23 dm = 0.23 hm
9. 5 cm = 50 mm
10. 5.3 hL = 530000 mL
11. 167 mm = 0.167 m
12. 1.589 daL = 158.9 dL
13. 35.45 mg = 0.0003545 hg
14. 43 dam = 4300 dm
15. 500 kg = 500000 g
16. 700mL = 0.0007 KL
17. 130 dag = 1.3 kg
18. 59.932 mm = 59.932 × 10 –⁵ km = 59.932 × 10^–5 km
* Note; 1 m —> 100 cm1 dm —> 0.001 hm1 cm —> 10 mm1 hL —> 100000 mL = 10⁵ mL1mm —> 0.001 m1 dal —> 100 dL1 mg —> 0.00001 hg = 10^–5 hg1 dam—> 100 dm1 kg —> 1000 g1 mL —> 0.000001 kL = 10^–61 dag —> 0.01 kg1 mm —> 0.00001 km = 10^–5 kmI hope I helped you^_^
When does puberty occur? What causes the changes that occur during puberty?
Answer:
When does puberty start? Puberty starts when changes in your child's brain cause sex hormones to start being released from the gonads, which are the ovaries and testes. This typically happens around 10-11 years for girls and around 11-12 years for boys.Skip
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What is puberty?
Puberty is the time when your child moves through a series of significant, natural and healthy changes. These physical, psychological and emotional changes are a sign that your child is moving from childhood towards adulthood.
Changes in puberty include:
physical growth and development inside and outside children’s bodies
changes to children’s sexual organs
brain changes
social and emotional changes.
When does puberty start?
Puberty starts when changes in your child’s brain cause sex hormones to start being released from the gonads, which are the ovaries and testes.
This typically happens around 10-11 years for girls and around 11-12 years for boys.
But it’s normal for the start of puberty to range from 8-13 years in girls and 9-14 years in boys.
There’s no way of knowing exactly when your child will start puberty. Early changes in your child’s brain and hormone levels can’t be seen from the outside, so it’s easy to think that puberty hasn’t started.
Puberty can be completed in about 18 months, or it can take up to 5 years. This range is also completely normal.
Girls: key physical changes in puberty
In girls, these are the main external physical changes in puberty that you can expect.
Around 10-11 years
Breasts will start developing. This is the first visible sign that puberty is starting. It’s normal for the left and right breasts to grow at different speeds. It’s also common for the breasts to be a bit tender as they develop. If your child wants a bra, a soft crop top or sports bra can be a good first choice.
A growth spurt occurs. Some parts of the body – like the head, face and hands – might grow faster than limbs and torso. This might result in your child looking out of proportion for a while. On average, girls grow 5-20 cm. They usually stop growing at around 16-17 years.
The body shape will change. For example, a girl’s hips will widen.
The external genitals (vulva) and pubic hair will start to grow. Pubic hair will get darker and thicker over time.
Around 12-14 years (about two years after breast development starts)
Hair will start growing under the arms.
A clear or white discharge from the vagina starts several months before periods start. If the discharge bothers your child, you could suggest your child uses a panty liner. If your child says it’s itchy, painful or smelly, consult your GP.
Periods will usually start within 2 years of breast growth starting, but can take up to 4 years.
Boys: key physical changes in puberty
In boys, these are the main external physical changes in puberty that you can expect.
Around 11-12 years
The external genitals (penis, testes and scrotum) will start to grow. It’s normal for one testis to grow faster than the other. You can reassure your child that men’s testes usually aren’t the same size.
Pubic hair will start to grow. It will get darker and thicker over time.
Around 12-14 years
Your child will have a growth spurt. Your child will get taller and their chest and shoulders will get broader. Some parts of your child’s body – like their head, face and hands – might grow faster than their limbs and torso. This might result in your child looking out of proportion for a while. On average, boys grow 10-30 cm. They usually stop growing at around 18-20 years.
It’s common for boys to have minor breast development. If your child is worried by this, it might help your child to know it’s normal and usually goes away by itself. If it doesn’t go away or if the breasts seem to be growing a lot, consult your GP.
Around 13-15 years
Hair will start growing on other parts of your child’s body – under the arms, on the face and on the rest of the body. Leg and arm hair will thicken. Some young men will grow more body hair into their early 20s.
The hormone testosterone is produced, which stimulates the testes to produce sperm.
Your child might start having erections and ejaculating (releasing sperm). During this period, erections often happen for no reason at all. Just let your child know that this is normal and that people don’t usually notice. Ejaculation during sleep is often called a ‘wet dream’.
Around 14-15 years
The larynx (‘Adam’s apple’ or voice box) will become more obvious. Your child’s larynx will get larger and their voice will ‘break’, eventually becoming deeper. Some boys’ voices move from high to low and back again, even in one sentence.
Answer:
For girls, puberty typically occurs between the ages of nine and thirteen
For boys, puberty typically occurs between the ages of ten and fifteen.
An increase in hormones – estrogen and progesterone in girls and testosterone in boys – causes the changes that happen during puberty.
Explanation:
(05.05 MC) Exposing human subjects to experimental manipulations such as high levels of toxins is unethical. We often use model organisms for this reason. What attributes would you look for in selecting a good model organism for investigating the impact of toxins in humans? A good model organism should be able to be easily maintain in the laboratory, be fast growing, with a fast generation time and be as closely related to humans as possible. Cost is the only consideration in selecting a model organism, since all living things are made of cells anything found will apply to humans. The best choice will must be the very closely related to humans, such as chimps, since anything found in other species will not apply to humans. The most important consideration in selecting a model organism is how the public will feel about doing experiments on that species, so the best choice would generally be a very simple organism like bacteria that people don't care very much about.
Answer:
A good model organism should be able to be easily maintain in the laboratory, be fast growing, with a fast generation time and be as closely related to humans as possible.
Explanation:
The attributes that should be looked for in the selection of good model organism for investigating the impact of toxins in humans include:
Easy maintenance: The easier the maintenance of the organism, the better for both the research and the researcher. More can be achieved with less effort as opposed to high maintenance animals.Fast generation time: They should be able to grow and reproduce quickly so as not to prolong the experiment for too long. The lower the regeneration time, the shorter the time required to obtain adequate data for the research.Genetical similarity to humans: A good model organism for humans related study must share some similarities with humans at the genetic level. The more the genetic similarity, the more applicable the outcome of the research on humans.Hence, a good model organism should be able to be easily maintained in the laboratory, be fast-growing with a fast generation time, and be as closely related to humans as possible.
what action is a reflex action
Answer:
A reflex action is an involuntary , quick response to a stimulus, which minimises any damage to the body from potentially harmful conditions, such as touching something hot.
Explanation:
Which observation led Mendel to the idea that traits were controlled by more than a single factor? Crossing two purple-flowered pea plants always resulted in a purple-flowered pea plant. Crossing two white-flowered pea plants always resulted in a white-flowered pea plant. A trait that was not seen in the first generation may later reappear in the second generation. A trait that was not seen in the first generation was completely gone and never reappeared.
Answer:
The answer is option C.
Explanation:
Genetic traits are expressed by dominant and recessive genes, which show up in the phenotype according to their presence on the chromosomes.
Observing a trait that was not present in the previous generations suggests that this trait is recessive and did not have the chance to appear in the other generations before. This idea has led Mendel to the idea that traits were not controlled by only a single factor. So the answer is C.
I hope this answer helps.
Answer:
A trait that was not seen in the first generation may later reappear in the second generation.
Explanation:
do foxes hunt alone yes or no.
yes. but occasionally they meet up with their packs during the night
Answer:
yes they hardley ever travel in packs
How much time is required for a P-wave to travel 6,000 kilometers?
Answer:
294.1 minutes
Explanation:
5,882 seconds (98 minutes) to travel 2,000 km.
2,000 x 3 = 6,000
5,882 seconds x 3 = 17,646
(294.1 minutes) to travel 6,000 km
What is the Dependent Variable?
Answer:
pitcher with the same velocity
4. What happens when an enzyme is denatured? I
Answer:
in the air
Explanation:
poop
what is the main reason for using a data table to collect data?
Answer:
the correct awnser is a to understand better
Answer:
the correct answer is a because tables make data easier to understand
The proximal convoluted tubule is A. lined with epithelial cells that lack microvilli. B. the site of glucose and amino acid reabsorption. C. permeable to water if ADH is present. D. impermeable to water. E. the site of water secretion.
Answer:
The correct answer is - option B.
Explanation:
The proximal convoluted tubule or PCT is the the part of nephron that lies in between of loop of Henle and bowman's capsule. The PCT is responsible for the most amount reabsorption of sodium, glucose, amino acids, water, potassium and chloride and reabsorbs around 65% to 100% of filtered substance.
Epithelial cells in the PCT reabsorb substances that have nutritional importance by the numerous microvilli on their surface.
Thus, the correct answer is - option B.
Afferent neurones connect?
A the brain and spinal cord to muscles
B sense organs to muscles.
C one sense organ to another sense organ
D sense organs to brain and spinal cord
Can someone explain to me the answer because I'm confused.
Answer:
These neurons are located in the central nervous system (the brain and spinal cord). Afferent and efferent neurons have to work together in order to sense and respond to stimulus, but they don't directly connect. Association neurons bridge the gap to relay information between sensory and motor neurons.
The hard outer covering of an animal is a(n) blank
Answer:
exoskeleton
Explanation: answering spree
Answer:
The hard outer covering of an animal is a(n) exoskeleton.
Explanation:
The definition of exoskeleton is "a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection."
If Earth’s average surface temperature continues to change over the next 30 years at the same rate it changed between 1980 and 2010, the average temperature will most likely be around
Answer:
Its B....
Explanation:
Get that 100.
what is homostatis in biology
Answer:
Homeostasis, from the Greek words for "same" and "steady," refers to any process that living things use to actively maintain fairly stable conditions necessary for survival. The term was coined in 1930 by the physician Walter Cannon.
Explanation:
Which zone of the reef is closest to the shore?
The reef____is a zone closest to the shore or the lagoon where the surrounding water is relatively calmer.
Answer:
https://www.usclassifiedinfo.com/forum/biology/which-zone-of-the-reef-is-closest-to-the-shore
Explanation:
This is where the answer is for the question
back reef
Explanation:
The back reef is the part of the reef closest to shore, while the fore reef is farther out to sea.
Beyond changes in relationships described above, explain what other characteristics of man changed after the Fall.
Answer:
The consequences of the fall was man and woman will die man turned to mortal and will turn back into dust. woman would bring children in pain. relationships between husband and wife would be difficult. The ground was cursed labor would be very hard. human was banned from the paradise and the garden. no longer would they enjoy the holiness and justice they had in paradise.
Explanation:
Based on your knowledge of our solar
system, how do you think it originally
formed?
Answer:
Our sun oriented framework shaped almost 4.5 billion a long time back from a thick cloud of interstellar gas and tidy. The cloud collapsed, conceivably due to the shockwave of a adjacent detonating star, called a supernova. When this tidy cloud collapsed, it shaped a sun oriented nebula—a turning, twirling disk of fabric.
Here is a easy question summary the Interphase, prophase metaphase, anaphase and telophase step by step for each of the phase
Answer:
Interphase:
The DNA is present as uncondensed chromatin, which is not visible under a microscope. The DNA is contained within a clearly defined nucleus . Centrosomes and other organelles have been duplicated , and the cell is enlarged in preparation for division .
Prophase:
The DNA supercoils and chromosomes condense, becoming visible under a microscope). The chromosomes are comprised of genetically identical sister chromatids, which are joined at a centromere). Paired centrosomes then move to the opposite poles of the cell and form microtubule spindle fibers , the nuclear membrane breaks down, and the nucleus dissolves .
Metaphase:
The microtubule spindle fibers from both centrosomes connect to the centromere of each chromosome , microtubule depolymerisation causes spindle fibers to shorten in length and contract , causing chromosomes to align along the center of the cell.
Anaphase:
The continued contraction of the spindle fibers cause genetically identical sister chromatids to separate . Once the chromatids separate, they are individual chromosomes. The genetically identical chromosomes move to the opposite poles of the cell .
Telophase:
Once the two chromosome sets arrive at the poles, spindle fibers dissolve and chromosomes decondense, becoming invisible under light microscopes. Nuclear membranes reform around each chromosome set , and cytokinesis occurs concurrently, splitting the cell into two separate cells.