A wide range of molecular compounds dissolve in water. This allows water to act a medium for moving molecules into and out of cells and tissues. All BUT ONE of these compounds dissolve in water. They are A) lipids. B) sugars. C) amino acids. D) carbohydrates.

QUESTION POSTED AT 06/12/2019 - 10:57 AM

Related questions

Which microscope did Robert Hooke use to study tree bark? electron microscope compound light microscope simple microscope scanning microscope

Answer:

B

Explanation:

compound light microscope

ANSWERED AT 18/01/2020 - 01:11 PM


QUESTION POSTED AT 18/01/2020 - 01:11 PM

Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope?

The statement best that explains why cells were observed in more detail using compound microscope than a simple microscope is : compound microscope has greater magnification ability than the simple microscope .

This will allow us to observe the subject with a much smaller size, making it easier for us to observe the detail

hope this helps

ANSWERED AT 18/01/2020 - 01:10 PM


QUESTION POSTED AT 18/01/2020 - 01:10 PM

Describe the three steps in urine formation. include a definition of the molecules involved during each step, as well as the process involved (active or passive transport)/

Urine forms as some of the blood plasma spills out, some of these spilled plasma components are taken back up into the blood, and other material is selectively sent out to be added to the urine. In other words, there are three main things happening to form urine. 
glomerular filtration (blood plasma spills out) bullet tubular reabsorption (some items are selectively reabsorbed into the blood) bullet tubular secretion (some blood plasma items are selectively sent out into the tubules)

ANSWERED AT 18/01/2020 - 01:08 PM


QUESTION POSTED AT 18/01/2020 - 01:08 PM

Sharp, jagged peaks are characteristic of fault-blocked mountains. A. True B. False

true hope this helps! :)

ANSWERED AT 18/01/2020 - 01:08 PM


QUESTION POSTED AT 18/01/2020 - 01:08 PM

Why is a convex mirror used to look under a vehicle during a security check? A- it forms images that are real, inverted,smaller,and closer B-it provides a narrow field of view and the images formed are virtual, upright,front back reversed, of same size, and at same distance C-it provides a wider field of view and the images formed are virtual but smaller and upright D-it provides a diminished view and the images formed are virtual, upright and bigger

Answer: Option 'C' is correct.

Explanation:

convex mirror is used to look under a vehicle during a security check because it provides a wider field of view and the images formed are virtual but smaller and upright.

As the image of convex mirror provides rear view in a small frame.

i.e. the images formed by convex mirror are virtual and as it covers wider range, the image is smaller than real but upright.

Hence, option 'C' is correct.

ANSWERED AT 18/01/2020 - 01:06 PM


QUESTION POSTED AT 18/01/2020 - 01:06 PM

Why is meiosis important for organisms? It allows for genetic variation among organisms. It determines which genes are dominant and which are recessive. It produces genetically identical cells. It provides a means of asexual reproduction.

Genetic variation. Meiosis is the combination of 2 haploid cells so it's not asexual reproduction. Meiosis doesn't produce identical cells-mitosis does. And it doesn't determine which genes are dominant or recessive - there are equal chance of inheriting dominant/recessive genes, but the dominant one is expressed as phenotype

ANSWERED AT 18/01/2020 - 01:06 PM


QUESTION POSTED AT 18/01/2020 - 01:06 PM

A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and water by filtration. What type of mixture is this?

Colloid cloudy and cannot be separated into oil and water by filtration or centrifuge. On the basis of collagen in Gelatin, it could be one type of colloid. Butter is an example of colloid. Colloids have bigger particles than Suspensions, its emulsion basically.

ANSWERED AT 18/01/2020 - 01:04 PM


QUESTION POSTED AT 18/01/2020 - 01:04 PM

Which of the following conversion factors would you use to change 18 meters to kilometers? A. 1000 m/1 km B. 1 km/1000 m C. 100 m/1 km D. 1 km/100 m

In converting a number with the unit of meter into kilometer we must use the conversion factor 1 km per 1000 meters.This is because in 1 kilometer there are 1000 meters and then the unit to be converted is already in meter so we need to divide it for us to convert.

ANSWERED AT 18/01/2020 - 01:04 PM


QUESTION POSTED AT 18/01/2020 - 01:04 PM

When Jacob starts running, his legs move faster and his heart rate increases. Which types of muscles are involved in these changes? A.) Skeletal muscles control his leg movement and smooth muscles control his heart rate. B.) Skeletal muscles control his leg movement and cardiac muscles control his heart rate. C.) Smooth muscles control his leg movement and cardiac muscles control his heart rate. D.) Skeletal muscles control both his leg movement and heart rate.

Answer:

The most appropriate answer would be option B.

The voluntary movements such as leg movements, movement of hands, posture et cetera are controlled with the of skeletal muscles. These are striated muscles which are controlled with the help of the somatic nervous system.

The heart rate is regulated with the help of the autonomic nervous system which controls the cardiac muscles. Cardiac muscles are a special type of striated muscles which constitute the heart tissue.

ANSWERED AT 18/01/2020 - 01:03 PM


QUESTION POSTED AT 18/01/2020 - 01:03 PM

Which is the main reason cells are replaced in the body?The cells are too large.The cells are inactive.The cells are damaged.The cells are cancerous.

The cells are replaced because the cells are old, dead, or damaged.

ANSWERED AT 18/01/2020 - 01:00 PM


QUESTION POSTED AT 18/01/2020 - 01:00 PM

Which is the end result of cytokinesis? one cell that has two identical copies of DNA one cell that has two different copies of DNA two cells that have two identical copies of DNA two cells that have two different copies of DNA

The end result of cytokinesis is TWO CELLS THAT HAVE TWO IDENTICAL COPIES OF DNA.

Cytokinesis refers to the last stage of either the mitosis or the meiosis. It involves the cytoplasmic division, which brings about the separation of the two daughter cells that are formed. It is a physical process, which finally divide the cells into two and at the same time ensuring that each cell has its own nucleus. At the end of cytokiness, two cells are formed that possess identical copies of DNA.

ANSWERED AT 18/01/2020 - 01:00 PM


QUESTION POSTED AT 18/01/2020 - 01:00 PM

Organisms in the same ecosystem are all _______. a. interrogative b. interdependent c. intermediate d. interceptive

The question is asking us to say what organisms in the same ecosystem are. Organisms in one ecosystem are all dependent on each other: they feed on each other or are dependent on the tissues of the other organisms when they die - this is called "interdependence" - dependence from each other , so the answer is b.interdependent

ANSWERED AT 18/01/2020 - 12:58 PM


QUESTION POSTED AT 18/01/2020 - 12:58 PM

Which of the following statements about agricultural societies is true? a. Agricultural societies did not pollute the environment. b. Agricultural societies impacted the environment less than hunter-gatherer societies. c. Agricultural societies had a higher population than hunter-gatherer societies. d. Agricultural societies impacted the environment more than industrial societies.

The correct answer is option C. Agricultural societies had a higher population than hunter-gatherer societies.

The hunting is not a very popular profession now-a-days, but the agriculture is very common and there are many people, who are involved in the profession of the agricultural production. So, the agricultural societies have a much higher population as compared to the that of the hunter-gather societies. Also, the hunting is banned for many animals and cannot produce enough money to support the basic livelihood.

ANSWERED AT 18/01/2020 - 12:58 PM


QUESTION POSTED AT 18/01/2020 - 12:58 PM

Which group of organisms has the derived characteristics of true tissues, bilateral symmetry, and a pseudocoelom?

The group of organisms that has the derived characteristics of true tissues, bilateral symmetry, and a pseudocoelom is the animalia kingdom. They present all of the mentioned characteristics.


An example of a pseudocoelom is the roundworm.


I hope it helps, Regards.

ANSWERED AT 18/01/2020 - 12:57 PM


QUESTION POSTED AT 18/01/2020 - 12:57 PM

Which group of organisms has the derived characteristics of true tissues, bilateral symmetry, and a pseudocoelom?

The correct answer is Nematodes, also known as roundworms. They fit the description that you provided.

ANSWERED AT 18/01/2020 - 12:56 PM


QUESTION POSTED AT 18/01/2020 - 12:56 PM

A protein may consist of as many as _____ amino acid molecules. 500 2,000 5,000 48

Answer;

5,000 amino acids.


Explanations;

Amino acids are the basic building blocks of proteins; contains a carboxyl group (-COOH) and an amino group (-NH2).

Proteins are large, complex organic molecules consisting of a large number of amino acids linked together by peptide bonds.

A protein may consist of as many as 5, 000amino acids.

ANSWERED AT 18/01/2020 - 12:54 PM


QUESTION POSTED AT 18/01/2020 - 12:54 PM

The scientific method could not be used to study which of the following phenomena? the effect of daily exercise on gerbils the authenticity of UFO sightings whether Vitamin C consumption reduces cold symptoms the effects of second-hand smoke on household pets

The correct answer is B. The authenticity of UFO sightings

Explanation:

The Scientific Method refers to a procedure widely used in science that implies observation, measurement and a hypothesis that is formulated based on observations and then tested or proved through different methods. Because of this, phenomena that can be studied by using the scientific method are those that can be somehow controlled and tested and that are objective rather than subjective.

In the case of the phenomena "The authenticity of UFO sightings" this cannot be studied using the scientific methodology because this cannot be constantly observed, controlled or tested and also the "authenticity" is subjective rather than objective which makes almost impossible to observe the phenomena consistently, create a hypothesis and then prove it and therefore the Scientific Method cannot be applied to this phenomena.

ANSWERED AT 18/01/2020 - 12:52 PM


QUESTION POSTED AT 18/01/2020 - 12:52 PM

Which tissue is most likely to transport dissolved sugar?

It is vascular tissue that transport sugar

ANSWERED AT 18/01/2020 - 12:52 PM


QUESTION POSTED AT 18/01/2020 - 12:52 PM

Which of the following would accompany a high-fat meal moving through the digestive system? The release of gastrin, which triggers the liver to release bile The release of gastrin, which triggers the stomach to release pepsin The release of secretin, which triggers the liver to release bile The release of secretin, which triggers the stomach to release pepsin

The answer is The release of secretin, which triggers the liver to release bile.

Secretin is the hormone released from the duodenum. It signals the secretion of bile in the liver. Bile helps digestion of lipids in the stomach.
Through the process of elimination:
- Pepsin is a hormone that breaks down proteins to the smaller peptides. So, pepsin does not breaks down lipids of high-fat meal.
- Gastrin is a hormone that triggers the gastric glands to secrete hydrochloric acid and pepsinogen, inactive form of pepsin.

ANSWERED AT 18/01/2020 - 12:51 PM


QUESTION POSTED AT 18/01/2020 - 12:51 PM

Which carbohydrate can be used by the body as an immediate source of energy?

Glucose

Carbohydrates actually get stored in the form of long polymers of glucose molecules or as glycogen starch. They provide energy to the animals for performing their daily duties. Carbohydrates are generally considered the fuel for all organisms, and without this most animals would become sloth and would be unable to perform the regular jobs. Carbohydrates are actually very easy to metabolise and hence generate quick energy. 

ANSWERED AT 18/01/2020 - 12:51 PM


QUESTION POSTED AT 18/01/2020 - 12:51 PM

Which is not a major similarity or difference between freshwater and marine ecosystems? I believe its b a. both support a large number of plants and animals adapted for aquatic living b. ocean and freshwater system conditions generally remain constant throughout the year c. freshwater ecosystems have a very low salt concentration, and include ponds, lakes, streams, wetlands, and rivers d. saltwater ecosystems have a high salt concentration and include oceans, coral reefs, and estuaries

The correct answer is:

b. ocean and freshwater system conditions generally remain constant throughout the year .

Explanation:

ocean and freshwater system requirements frequently remain constant completely the year. This is not true because they are very inconsistent. For examples, freshwater rivers can completely freeze during the winter while oceans can't freeze entirely, not even a bit. Also, the animals inside have radically changed body structures to fight these changes.

ANSWERED AT 18/01/2020 - 12:46 PM


QUESTION POSTED AT 18/01/2020 - 12:46 PM

What is the end result of meiosis? four identical daughter cells four different daughter cells two identical daughter cells two different daughter cells

Answer;

Four identical daughter cells

Explanation;

-Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction.

-In Meiosis one diploid cell produces 4 haploid daughter cells i.e. having half the chromosome number than the somatic cell of same organism. Therefore, as a human cell has 46 chromosomes, each haploid cell gets 23 chromosomes.

ANSWERED AT 18/01/2020 - 12:46 PM


QUESTION POSTED AT 18/01/2020 - 12:46 PM

Ron is observing an onion cell on a slide under a microscope. He sees chromatids being pulled to opposite ends of the cell. Which phase is he seeing?

The answer is anaphase.


Ron is obviously observing cell division - mitosis. Mitosis consists of four phases - prophase, metaphase, anaphase, telophase and cytokinesis.

1. Prophase: Chromatin in the nucleus condenses and chromosomes pair up

2. Metaphase: Chromosomes line up at the center of the cell. The sister chromatids are joined together.

3. Anaphase: The sister chromatids separate from each other to the opposite sides of the cells.

4. Telophase and Cytokinesis: Membrane forms around each set of chromosomes on two opposite sides of the cells and cell divides into two identical daughter cells.

 

Therefore, sister chromatids being are pulled to the opposite ends of the cell in anaphase.

ANSWERED AT 18/01/2020 - 12:42 PM


QUESTION POSTED AT 18/01/2020 - 12:42 PM

Is diffusion the only way materials can enter the cell? Explain.

Of course not! There's lots of ways materials can enter. It also depends on the cell; whether it has cell wall and cell membrane or only cell membrane.

Besides diffusion, there's also osmosis and active transport.

If the cell has only cell membrane, it means it's partially permeable, which means osmosis can happen.

*hope this helps :)

ANSWERED AT 18/01/2020 - 12:41 PM


QUESTION POSTED AT 18/01/2020 - 12:41 PM

The three stages of cellular respiration are glycolysis Krebs cycle and the electron transport chain when do cells exhibit all these stages

They exhibit all the stages when its the presence of oxygen only.

ANSWERED AT 18/01/2020 - 12:41 PM


QUESTION POSTED AT 18/01/2020 - 12:41 PM

Looking through a microscope, you see a cell forming a cell plate during cytokinesis. Which cell are you looking at?

If a cell plate is seen being formed, then that would mean that a cell wall would be in the process of forming thus you would be looking at a PLANT CELL.

ANSWERED AT 18/01/2020 - 12:41 PM


QUESTION POSTED AT 18/01/2020 - 12:41 PM

Which is an appropriate justification for this the roots of the aquatic plant hydrilla are poorly developed and lack xylem tissue.

The most appropriate justification for the roots of the aquatic plant hydrilla to be poorly developed and lack xylem tissue is to reduce the intake of water to the plant. Therefor the best answer choice is…


C) As hydrilla is aquatic in nature, the roots do not have to search for water, and there is no need for xylem to absorb water because the plant is surrounded by water.


Please see image attached.


I hope it helps, Regards. 

ANSWERED AT 18/01/2020 - 12:40 PM


QUESTION POSTED AT 18/01/2020 - 12:40 PM