What Makes Water So Special? Why? When you hear that NASA's space probes are looking for "evidence of life" on other planets, do you know what that means? They are looking for evidence of liquid water. Water is fundamental for all life; without it every living thing would die. Water covers about 70% of Earth's surface and it makes up 65-75% of our bodies (82% of our blood is water). Even if water might seem boring to you-no color, taste, or smell-it has amazing properties that make it necessary for supporting life.
1) How many hydrogen atoms are in a molecule of water?
2) How many oxygen atoms are in a molecule of water?
3) What holds the hydrogen atoms to the oxygen atom?
4)The shading around the molecule represents the relative density of electrons shared by the atoms. What does this indicate about the density of electrons around the oxygen atom as compared to the density of electrons around the hydrogen atoms?
5) Where is the majority of negative charge on the water molecule?

Answer:

Several Things

Explanation:

Both have a flagella, plasma membrane, cell division, cytoplasm, ribosomes, and chromosomes.

Answer:

D

Explanation:

The following sections of the water cycle are correct: Evaporation, condensation, precipitation, runoff, and collection are in Option D as the water cycle is the continuous movement of water in ecosystems.

The steps of the water cycle consist of evaporation, where water from oceans, lakes, rivers, and even soil is converted into water vapor; condensation, where water vapor rises and cools; and precipitation, where clouds become heavy with water droplets. Then Precipitated waters flow into rivers, and this water can also be collected in man-made structures such as reservoirs and lakes.

Hence, the following sections of the water cycle are correct: Evaporation, condensation, precipitation, runoff, and collection are in Option D as the water cycle is the continuous movement of water in ecosystems.

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Answer:

C) Lower back

Explanation:

The lumbar area is located between the chest, the spine and the sacrum. This area corresponds to the lower back and has five vertebrae: L1-L5. According to this, the  answer is that based on this​ statement, the EMT should expect to find bruising in the lower back.

Answer:

For an instance, an aquatic food web can be connected to a food web that is based on land. Planktons and algae are some of the main producers which are found in the marine ecosystem. These planktons are eaten by a tiny shrimp called krill. Whales, seals, squids and fishes feed on these tiny shrimps.

Explanation:

Answer:

True

Explanation:

I will give an example. Two plants cross breeds. A pink flower and a red flower. The red flower has a gene for red color and the pink has a gene for pink color. Mix the two together and you have an offspring with two different genes, or alleles, that are either going to be mixed or the plant will be one or the other color.

Answer:

energy

Explanation:

Answer:

42

Explanation:

The somatic chromosome of zebras will be 42.

During gamete formation prior to fertilization, reproductive cells divides by meiosis to give rise to haploid cells with half the number of chromosomes of the somatic cells.

During fertilization, two haploid gametes fuse together to give rise to a diploid zygote.

A donkey with 62 somatic chromosome will produce gametes with 31 chromosomes. Zonkey is a diploid organism and has chromosome number of 52, hence, the haploid gamete of zebra would have:

52 - 31 = 21 chromosomes.

Hence, the diploid (somatic) chromosome number of zebras will be:

21 x 2 = 42 chromosomes.

Answer:

try D. Energy was transferred from Mango to the cup.

Explanation:

Answer:

Metaphase

Explanation:

Taxol is an anti-mitotic chemical which is used to treat cancer.

The taxol act by binding the microtubules which act as cytoskeletal structure. The microtubules are involved in the segregation of the chromosomes during the division of the cell.

The microtubules allow the movement of the chromosomes in the dividing cell during anaphase.

If the cells are treated with the taxol then the cells will be observed at the metaphase in which the chromosomes are aligned in the equatorial line. The microtubules will separate the chromosomes after the metaphase or during the anaphase but since the taxol prevents the depolymerization of the microtubules, therefore, cells are found in the metaphase.

Thus, Metaphase is correct.

Answer: Pros: It is abundant, and can be used without interruption, cleaner than fossil fuel. Cons: Can result in air pollution, takes a lot of energy to produce, can be seasonable and competes with food production. Landfill gas, solid waste energy comes from harnessing the decomposition of organic material.

Explanation:

Final answer:

Renewable energy resources have pros, such as sustainability and reduced greenhouse gas emissions, but also cons, including lower efficiency and environmental impacts.

Explanation:

Renewable energy resources have several pros and cons. Some of the pros include:

However, there are also cons to consider:

Answer:

Pb-206

Explanation:

Answer:

primase - unwinded parental double helix DNA, no replication.

DNA ligase - new double helix DNA, one old strand and okazaki fragments

DNA polymerase 1 - original DNA strands, daughter strands with primers still attached.

Explanation:

The primase enzyme is responsible for the synthesis of RNA primer which binds with unwinded DNA strands at the origin of replications and serves as a starting chain for the daughter strands. Hence, their absence during replication will lead to the discontinuation of the replication process after the unwinding of the double helix structure by the helicase enzyme.

DNA ligase functions as to join fragments of DNA synthesized discontinuously (okazaki fragments) during replication. Okazaki fragments are generated after replication of the leading and the lagging strands have been complete. Hence, the absence of the DNA ligase will result in the lagging strands existing as a lone strand along with the okazaki fragments and a newly replicated DNA consisting of one old leading strand and its newly synthesized complimentary strand.

The DNA polymerase 1 is responsible for the removal of RNA primers and replacing them with DNA nucleotides after the elongation process. Hence, the absence of the enzyme will cause incomplete replication process.

Answer:

Explanation:

Answer:

Explanation:

Each lung enclosed in two membranes called the pleurae . The outer membrane is called parietal pleura , and the inner membrane is called visceral pleura , which closely invest the lungs . A very narrow space exist between two pleura i.e., known as pleural cavity that contains pleural fluid secreted by the pleurae .  Pleurae cause the production of pleural fluid and create cavities that seperates organ . Mesothelial cells of  both pleural layer secretes fluid and cause lubrication on the surface . These lubrication mimize the friction between  pleural layer to prevent the difficulty in breathing and creates surface tension that  is responsible for holding the lungs to the thorax wall . Generally , pressure within cavities present between pleural layers is less than atmospheric pressure i.e., negative pressure in the pleural cavity which is also  responsible for holding the lungs to the thorax wall .

Answer:

The ovarian cycle regulates endocrine tissue preparation, and egg release in female body.  

The first half of the ovarian cycle as the follicular process. Slowly growing rates of FSH and LH are causing follicle development on the ovary surface. This cycle makes the egg primed for ovulation. As the follicles develop they start releasing estrogens and low progesterone levels. Progesterone locks the endometrium in order to help ensure pregnancy. It takes about seven days to travel ovum through the Fallopian tube and to get implanted in uterus. There are 30-60 cells at this point of evolution, called the morula. If there is no pregnancy implantation the lining would be sloughed off. estrogen levels increase after around 5 days, and the menstrual cycle enters the proliferative process. The endometrium starts to regrow, replacing the weakening blood vessels and glands at the end of the last cycle.

The sagittal plane, which divides the body into left and right halves, is the only anatomical plane that could not show both structures or regions like the brain and tongue, both eyes, hypogastric and gluteal regions, both kidneys, sternum and vertebral column, or the heart and uterus.

To answer your question, let's first recall what each anatomical plane represents. The sagittal plane divides the body into left and right halves, the frontal (or coronal) plane divides the body into front (anterior) and back (posterior) portions, and the transverse (or horizontal) plane divides the body into upper (superior) and lower (inferior) halves.

Given this understanding, we can deduce that the sagittal plane is the only one that cannot show: (a) both the brain and tongue, (b) both eyes, (c) both the hypogastric and gluteal regions, (d) both kidneys, (e) both the sternum and vertebral column, and (f) both the heart and uterus. This is because these structures or regions are located on opposite sides of the body (left and right) and not vertically or anterior-posteriorly.

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Answer:

D. Using excess water to cook potatoes

Explanation:

Using excess water to cook potatoes can reduce its mineral content.

Answer:

The action that can lead to losses of minerals from the vegetable is D) Using excess water to cook the potatoes.

Explanation:

Due to cooking many losses of minerals for example sodium, potassium, phosphorus, calcium, magnesium, iron, zinc, manganese, copper and various other food materials can be seen.Before and after cooking following changes take place in the mineral content of the vegetables.

(1) The mineral contents of cooked foods in mass cooking were on an average about 60-70 percent of those in raw or uncooked foods.

(2) Cooking losses were particularly high in minerals of vegetables.

(3) Among various cooking methods, loss of mineral was largest in squeezing after boil and in soaking in water after thin slice, followed by parching, frying and stewing.

(4) Cooking losses of minerals in meals cooked in home brought about the similar results as those by the mass cooking procedures.

The measures to prevent cooking loss are

(a) eating the boiled food with the soup

(b) addition of small amount of salt (about 1% NaCl) in boiling

(c) avoidance of too much boiling

(d) selection of a cooking method causing less mineral loss (stewing, frying or parching).

Answer:

Option A, Spermatozoa can generally be found in the vagina of a living female after three days

Explanation:

The average life of  spermatozoa in the female reproductive tract after ejaculation determines the fertility. Sperm survive for a longer period of time after it reaches the cervix. A spermatozoon (motile sperm) survives for nearly 2.5 hours in the vagina and 48 hours in the oviduct.

However, spermatozoa irrespective of its motility or viability can be found after coital ejaculation in the cervix and vagina even after 12 and 9 days respectively.  

Hence, option A is the correct choice of answer

So far weather forecasts are only accurate from three to five days in advance despite all the computing power, communications and data available.

Answer:

Explanation:

ONE WEEK

Final answer:

The mRNA sequence that is complementary to the DNA sequence GATCAC is CUAGUG, corresponding to option 1 in the multiple-choice question provided. This is determined by pairing each DNA base with its RNA complement following the transcription rules.

Explanation:

The student's question asks which mRNA sequence is the complement to the DNA sequence GATCAC. The transcription process in biology involves creating a complementary RNA strand from a DNA sequence. Each DNA base pairs with a specific RNA base: adenine (A) pairs with uracil (U) in RNA, thymine (T) pairs with adenine (A), cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C).

Using these pairing rules, we find the complementary RNA sequence for the DNA sequence GATCAC as follows:

DNA: G

mRNA: C

DNA: A

mRNA: U

DNA: T

mRNA: A

DNA: C

mRNA: G

DNA: A

mRNA: U

DNA: C

mRNA: G

Therefore, the correct mRNA sequence that is complementary to GATCAC is CUAGUG, which corresponds to option 1.

Answer:

357,250,000 -> 35,725,000 -> 3,572,500 -> 357,250 -> 35,725

Explanation:

only 10% of the energy at one level gets passed to the organism in the next level.

hope this helps :)

At every level in the energy pyramid, 10% of the energy reduces from producers to quaternary consumers.

Energy pyramid is the flow of energy.

Reduces mean decreases.

Producers are the plants which can prepare food by themselves.

Quaternary consumers are the top most predators which consumes tertiary consumers.

So there are five energy levels in a pyramid. they are producers in which the energy is 357,250,000 KC, primary consumers (35,725,000 KC), secondary consumers (3,572,500 KC), tertiary consumers (357,250 KC) and quaternary consumers ( 35,725 KC).

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Answer:

The process of Faternal twins start when an ovum or egg split into two, and develop into individual babies which are known as faternal twins. Oogenesis is the formation of egg.

Explanation:

After the formation of ovum, it splits.

Answer:

This means that Earth is at the center of the solar system, with the Sun and other planets orbit around it. Today, the solar system is now thought to be Heliocentric.

Bone marrow is found in the hollow spaces of spongy bone, which is located in the epiphysis of long bones.

Bone marrow can be found in the many hollow spaces of the spongy type of bone. The spongy bone, primarily located in the epiphysis of long bones, consists of tiny plates called trabeculae that add strength to the bone. Within the spaces of these trabeculae lies the red marrow, which is essential for the production of red blood cells, with a fascinating production rate of 2 - 3 million per second, and also produces various types of white blood cells.

Patterns of foodborne illness

Explanation:

Patterns which may indicate a foodborne illness outbreak include various predominant symptoms of the illness, duration of the illness, population affected.

Differential clinical diagnosis of foodborne illness includes acute symptoms like nausea, vomiting, diarrhea, dehydration, abdominal pain, headache, fever etc. Microbial diagnosis needs to be done to identify the pathogen causing the foodborne illness.

Intensive surveillance needs to be done to detect serious outbreak of such foodborne illnesses. Diseases like typhoid, norovirus disease, hepatitis A, E. coli enteric diseases are caused to  infection from contaminated food.

Answer: c

Explanation:Patterns which may indicate a foodborne illness outbreak include various predominant symptoms of the illness, duration of the illness, population affected.

Differential clinical diagnosis of foodborne illness includes acute symptoms like nausea, vomiting, diarrhea, dehydration, abdominal pain, headache, fever etc. Microbial diagnosis needs to be done to identify the pathogen causing the foodborne illness.

Intensive surveillance needs to be done to detect serious outbreak of such foodborne illnesses. Diseases like typhoid, norovirus disease, hepatitis A, E. coli enteric diseases are caused to  infection from contaminated food.

Answer: The correct answer to the question is option B

Closest to the Nose; Closest to the temples.

Sides of the retina are referred to as either as nasal or temporal.

Masai is closest to the NOSE while temporal is closest to the TEMPLES.

Explanation: The retina is the innermost layer of the eye,it is made of nerve fibers that transmit impulses to the visual centre in the brain via the optic nerve and the macula lutea which contains light sensitive cells.

The retina is divided into the Nasal retina and the temporal retina.

The nasal retina is the part of the retina that is nearest to the nose.

It is from this nasal side of the retina that the nerve fibers that are going to the opposite side of the cerebrum are projected after they desiccate in the optic chiasma.( X-shaped structure they is formed as a result of crossing if optic nerves in the brain)(crossing over)

Just like the nasal retina,the temporal retina is the part of the retina that is nearest to the temples and it is from this side of the retina that nerve fibres that are going to the same side if the cerebrum are projected after they pass through the optic chiasma. X-shaped structure they is formed as a result of crossing if optic nerves in the brain)(crossing over)

The nasal side of the retina refers to the part closest to the nose, while the temporal side refers to the part closest to the temples (sides of the head). Thus, the correct answer to the question is option Nasal is closest to the nose; Temporal is closest to the temples'.

The terms 'nasal' and 'temporal' when referring to the retina indicate their relative positions within the eye. The nasal side of the retina is the part closer to the nose, whereas the temporal side is closer to the temples, that is, the sides of the head. This can be remembered because the term 'nasal' is related to the nose and 'temporal' is related to the temples. Therefore, in the provided options, the correct choice would be B. 'Nasal is closest to the nose; Temporal is closest to the temples'.

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Answer:

Their ability to manufacture their own food

Explanation:

There are two main types of plankton. this includes phytoplankton and zooplankton. Phytoplankton are different from zooplankton in that these plankton are plant-like and undergo photosynthesis manufacturing their own food. They are also regarded as being autotrophic. They are important in that other organisms including the zooplanktons depends on them for food, hence they can also be categoriZed as producers.

"Phytoplankton are distinguished from other types of plankton primarily by their ability to photosynthesize. They contain chlorophyll and other pigments, which allow them to convert light energy into chemical energy through the process of photosynthesis.

This sets them apart from zooplankton, which are heterotrophic and must consume other organisms for energy, and bacterioplankton, which are primarily decomposers.

The importance of phytoplankton is multifaceted:

1. Oxygen Production: Phytoplankton contribute significantly to the oxygen in our atmosphere. It is estimated that about 50% of the global oxygen production is due to phytoplankton photosynthesis, making them crucial for the survival of aerobic life on Earth.

2. Basis of Marine Food Webs: As primary producers, phytoplankton form the foundation of the marine food web. They are consumed by zooplankton, which in turn are food for larger organisms, including fish, whales, and birds. Thus, they support the immense biodiversity of marine ecosystems.

3. Carbon Sequestration: Phytoplankton play a key role in the global carbon cycle. Through photosynthesis, they absorb carbon dioxide from the atmosphere. When phytoplankton die, some of their biomass sinks to the ocean floor, effectively sequestering carbon away from the atmosphere and mitigating climate change.

4. Regulation of Climate: Phytoplankton can influence climate patterns by affecting the heat distribution in the ocean. They can also impact cloud formation and albedo through the production of dimethyl sulfide (DMS), which can lead to the formation of clouds that reflect sunlight away from the Earth's surface.

5. Economic Value: Phytoplankton are the starting point for many commercially important fisheries. Their productivity affects the abundance and distribution of fish stocks, which are vital for the economies of coastal communities and the broader seafood industry.

In summary, phytoplankton are a critical component of Earth's ecosystems, influencing atmospheric composition, climate regulation, marine biodiversity, and human economies. Their health and abundance are indicators of the overall health of the world's oceans."

Answer:

label A= radio waves, label C= infrared, Label D= visible Light, Label G= gamma rays.

Explanation:

Electromagnetic radiation consists of electromagnetic waves which has frequency of their oscillations. Here label A is radio waves, label C is infrared, Label D is visible Light, Label G is gamma rays.

Waves are usually transverse and longitudinal,electromagnetic waves are transverse wave. Electromagnetic spectrum is usually divided into 7 regions, i.e.,

All these are in order of decreasing wavelength and increasing frequency.

Thus, here label A is radio waves, label C is infrared, Label D is visible Light, Label G is gamma rays.

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Answer:

C. Each pruning method was used on only one shrub.

Explanation:

Reproducibility is one of the most important factors contributing to the reliability of scientific research. The researcher must be able to achieve the same results two to three times. In biological research, this is usually done in the from of triplicates i.e. one experiment is repeated three times. This is done for two reasons:

Triplicates rule out the possibility that the observed change was caused by another factor or through mere chance. Therefore, in the current scenario, each pruning method should have been applied to multiple (at least 3) samples of a shrub.