1. (1 pt) Movement of molecules from an area of higher concentration to one of lower concentration is called ___________________. A. osmosis B. mitosis C. diffusion D. active transport 2. (1 pt) Movement of molecules from an area of lower concentration to one of higher concentration with energy is called ___________________. A. osmosis B. mitosis C. diffusion D. active transport 3. (1 pt) Movement of water across a membrane is called ___________________. A. osmosis B. mitosis C. diffusion D. active transport 4. (1 pt) Plant cells change the sun’s energy to chemical energy during ____________. A. meiosis B. mitosis C. photosynthesis D. active transport 5. (1 pt) One way to speed up a chemical reaction is to add a _______________, which is unaffected by the reaction. A. catalyst B. surface area C. concentration D. heat 6. (1 pt) Increasing the _________________ of a reactant exposes more of it to the reaction taking place. A. catalyst B. surface area C. concentration D. heat 7. (1 pt) What is the circulatory system’s function? A. It removes cellular waste from the blood and converts it to urine. B. It exchanges carbon dioxide and oxygen in the lungs. C. It transports oxygen and nutrients to cells while removing carbon dioxide and other wastes. D. It breaks down food into usable nutrients. 8. (4 pt) Which organism belongs to the Kingdom Archaebacteria? A. halophile bacteria B. virus C. sea star D. worm 9. (4 pt) Which organism belongs to the Kingdom Eubacteria? A. thermophile bacteria B. paramecium C. cyanobacteria D. algae 10. (4 pt) Which organisms belong to the Kingdom Protista? Choose all answers that are correct. A. amoeba B. sea anemone C. beetle D. seaweed 11. (4 pt) Which organisms belong to the Kingdom Fungi? Choose all answers that are correct. A. pine tree B. mushroom C. moss D. mold 12. (4 pt) Which organisms belong to the Kingdom Planta? Choose all answers that are correct. A. moss B. lichens C. fern D. virus 13. (4 pt) Kingdom Animalia A. frog B. mushroom C. worm D. thermophile bacteria 14. (1 pt) Chemicals packed together tightly react more slowly. A. True B. False 15. (1 pt) Chemical reactions usually take place more quickly at high temperatures. A. True B. False

QUESTION POSTED AT 26/03/2020 - 01:06 PM

Answered by admin AT 26/03/2020 - 01:06 PM

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B and D
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Related questions

You develop active immunity to a pathogen by

Active immunity can be natural or artificially developed. Naturally acquired - a person is exposed to a live pathogen, develops an immune response - and then creates memory T and B cells. Artificially acquired - a person is given a vaccine (which contains the antigen). This stimulates the same response, without the symptoms of the disease.





ANSWERED AT 01/04/2020 - 01:49 PM


QUESTION POSTED AT 01/04/2020 - 01:49 PM

When foreign material enters the body, one way the immune system responds is by

Pathogens may enter you but there is a layer (almost like a wall) that they will have to get through first (in the skin) bacteria can also kill pathogens. The immune system will produce antibodies that will also kill off pathogens.

ANSWERED AT 01/04/2020 - 01:46 PM


QUESTION POSTED AT 01/04/2020 - 01:46 PM

1. Do you think the density of the ice affected the melting rate of the ice, or do you think adding the objects affected the melting rates? Be sure to include data to support your answer.

Answer:

The density of an object refers to an extensive property, which signifies that it does not rely upon the concentration of the substance. Each and every substance in this world exhibits its characteristic density. Therefore, it would not influence the rate of melting as it does not fluctuate. However, adding the objects could accelerate the procedure as each object exhibits energy in the form of heat, which could provoke the mediating force for the melting process.  

ANSWERED AT 01/04/2020 - 01:42 PM


QUESTION POSTED AT 01/04/2020 - 01:42 PM

Select all of the answers that apply. Air pollution can _____. improve health create acid rain make respiratory or heart conditions worse destroy vegetation reduce the hole in the ozone layer

Answer:

Air Pollution can be defined as the pressence of any unwanted substances in air.

This is very harmful to the environment, animals and human beings. It can adversely effect the vegetation and health of human beings.

It can create acid rain, make the respiratory or health condition even worse.

It can destroy several types of vegetation that is susceptible to pollution.

ANSWERED AT 01/04/2020 - 01:41 PM


QUESTION POSTED AT 01/04/2020 - 01:41 PM

Algal blooms occur due to the presence of an excess amount of nutrients, like phosphorus, in fresh water. How does excess phosphorus get into fresh water? A) The nutrients are added to the water by fishermen to feed the fish. B) The nutrients leak into fresh water from oil refineries in the vicinity. C) The nutrients are a part of the fertilizers that are often washed away into ponds. D) The nutrients are formed by the decomposition of organic wastes dumped into fresh water.

The algal blooms can be defined as the rapid growth of the algae in the water bodies. These algal blooms are a result of the excess amounts of nutrients, such as phosphorus, in the water. These excess nutrients are released in the fresh water bodies as a result of the fertilizers that are washed away from the agricultural fields nearby. The fertilizers are rich in nutrients such as phosphorus to help the plant to grow. When they get washed into the water bodies, they promote the growth of the algae leading to algal bloom.

Hence, the correct answer is 'Option C - The nutrients are a part of the fertilizers that are often washed away into ponds'.

ANSWERED AT 01/04/2020 - 01:35 PM


QUESTION POSTED AT 01/04/2020 - 01:35 PM

Zebra mussels are native to Poland and the Soviet Union. They were probably transported to the United States via trans-oceanic vessels. With no natural predators in the United States, zebra mussels A) will eventually die out due to lack of food supplies. B) caused a huge decline in native clam and mussel populations. C) compete unsuccessfully with native mussels and quickly die. D) successfully share the niche with native mussels and clams.

Correct answer: B). Caused a huge decline in native clam and mussel populations.  

The Zebra mussels are the water animals that are D- shell, which is made up of hinged valves that are joined together by a ligament. The main problem with them is that they filter water in order to eat the plankton. As they eat the plankton, it creates a competition between them and fish for food.

They are known to kill mussels population by attaching to their shells, they also out compete for food native mussels.

Hence, the correct answer would be option B.


ANSWERED AT 01/04/2020 - 01:32 PM


QUESTION POSTED AT 01/04/2020 - 01:32 PM

What are examples of the plant life and animal life that can be found in each type of terrarium? Be specific and include many types of life that could be found.

Desert
plants- shrubs get moisture from morning dew

cacti holds a lot of water

elephants tree uses huge trunk to save water
animals coyote has fur to keep cool

tortuous uses back legs to help dig

Jackrabbit uses ears to help cool down

Arctic Tundra-
animal's- polar bear, reindeer, Arctic fox
plants- Arctic Willow, bearberry, Arctic moss

The Savanna
animals- lion, elephant, zebra
plants- Jarrah tree, Jackuberry Tree, Elephant grass

I'm sorry I could not tell u all the information for the biomes. this is all I had time to right

ANSWERED AT 01/04/2020 - 01:32 PM


QUESTION POSTED AT 01/04/2020 - 01:32 PM

Algal blooms occur due to the presence of an excess amount of nutrients, like phosphorus, in fresh water. How does excess phosphorus get into fresh water? A) The nutrients are added to the water by fishermen to feed the fish. Eliminate B) The nutrients leak into fresh water from oil refineries in the vicinity. C) The nutrients are a part of the fertilizers that are often washed away into ponds. D) The nutrients are formed by the decomposition of organic wastes dumped into fresh water.

Answer: Option C

Explanation:

The nutrients that is carried away by the water from the agricultural wastes are part of the fertilizer that is put on to increase the growth of the plants.

The nutrients from the fertilizer is carried away by the water that passed from the field to the nearby freshwater source.

The water carries phosphorus which increases the growth of the algal bloom in water. The algae uses all the oxygen from the water and makes the water deficient of oxygen.

Hence, the correct answer is option C

ANSWERED AT 01/04/2020 - 01:30 PM


QUESTION POSTED AT 01/04/2020 - 01:30 PM

Describe the function of each organelle. 1- Cytoplasm 2- Chloroplasts 3- Cell wall 4- Centrioles

Answer and Explanation:

Cytoplasm: the cytoplasm is in the space between the nucleus and the plasma membrane. It supports diferent kinds of structures as the organelles.Cytoplasm is as the interior environment of cell. The cytoskeleton in the cytoplasm provedes support and movement.

Centrioles,: they help to move and organize chromosome during cell reproduction.

Cell wall: is the boundary of the cell and encloses the cytoplasm. It leads the movement of certain substances and bars the passage of other substances.

It's a comunication device because some pf its proteins serve as receptors.

CHLOROPLAST: It converts light energy into chemical energy. It produces energy through photosynthesis.

ANSWERED AT 01/04/2020 - 01:29 PM


QUESTION POSTED AT 01/04/2020 - 01:29 PM

Discuss the process of the chloride shift in both the respiratory and the digestive systems.

  Carbon dioxide is generated in tissues as a byproduct of normal metabolism. It dissolves in blood plasma to form carbonic acid (H2CO3); red blood cell (RBC) carbonic anhydrase catalyzes this reaction. Carbonic acid then spontaneously dissociates to form bicarbonate (HCO3−) and a hydrogen ion (H+). In response to the decrease in intracellular pCO2, more CO2 passively diffuses into the cell.

Cell membranes are generally impermeable to charged ions (i.e. H+, HCO3− ) but RBCs are able to exchange bicarbonate for chloride using the anion exchanger protein Band 3. Thus, the rise in intracellular bicarbonate leads to bicarbonate export and chloride intake. The term "chloride shift" refers to this exchange. Consequently, chloride concentration is lower in systemic venous blood than in systemic arterial blood: high venous pCO2 leads to bicarbonate production in RBCs, which then leaves the RBC in exchange for chloride coming in.[2]

ANSWERED AT 01/04/2020 - 01:27 PM


QUESTION POSTED AT 01/04/2020 - 01:27 PM

Describe how community residents and authorities can prepare for an earthquake and its aftermath review earthquake advise from the USGS the American Red Cross and other agencies if you live in an area that is susceptible to earthquakes include suggestions specific to your area

Answer:

In an area that is prone to earthquakes, we could store household items in a way that will minimize chances of injury and make sure that the bigger items or furniture such as shelves are fastened to walls. We can also try not to sleep under a window, and should always have an emergency kit assembled. You can also have plans with your family as to where to go if caught in an Earthquake.( also might want to change the wording because this was my answer. Just change they wording into your own to show that you understand it and am not just copying me! :)  )

Hope this helps!

ANSWERED AT 01/04/2020 - 01:27 PM


QUESTION POSTED AT 01/04/2020 - 01:27 PM

(2006-27) Bivalves, such as clams, are found in salt water. The clam captures food particles from water that flows over its gills. Which of these is the best classification of the clam? a. A chunk feeder b. A decomposer c. A filter feeder d. A grazer

Answer:

c. A filter feeder

Explanation:

  • Filter feeders are those organisms that feed on the food particles by straining them from water and then taking them in.
  • The straining of water takes place through specialized structures which acts as filters.
  • Since in the given case, the bivalves are capturing the food particles that are flowing over their gills, they are performing filer feeding.

ANSWERED AT 01/04/2020 - 01:27 PM


QUESTION POSTED AT 01/04/2020 - 01:27 PM

Moves substances to and form all cells of the body ? What is the human organ system

I believe it's the Circulatory system

ANSWERED AT 01/04/2020 - 01:26 PM


QUESTION POSTED AT 01/04/2020 - 01:26 PM

Describe the function of each organelle. 1- Vacuoles 2- Lysosomes 3- Mitochondrion 4- Cell membrane

Answer:

vacuoles -

Vacuoles are membrane-bound sacs within the cytoplasm of a cell that function in several different ways. In mature plant cells, vacuoles tend to be very large and are extremely important in providing structural support, as well as serving functions such as storage, waste disposal, protection, and growth.

Lysosomes

One of the key organelles involved in digestion and waste removal is the lysosome. Lysosomes are organelles that contain digestive enzymes. They digest excess or worn out organelles, food particles, and engulfed viruses or bacteria. Lysosomes are like the stomach of the cell.

Mitochondrion

Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell. The biochemical processes of the cell are known as cellular respiration.Cell membrane

ANSWERED AT 01/04/2020 - 01:22 PM


QUESTION POSTED AT 01/04/2020 - 01:22 PM

Explain the purpose of a quick body response like pulling a hand a way from a hot stove.

The amygdala would recognize the danger and immediately do something about it, it typically puts us in a fight or flight mode, in this case it is flight as we are moving our hand away from a burning stove that could cause serious damage. Your brain knows that a burning stove is bad to touch because many a person has told you that in your life, ex. "Don't leave the stove running when you are not in the room." So naturally you would'nt.

ANSWERED AT 01/04/2020 - 01:21 PM


QUESTION POSTED AT 01/04/2020 - 01:21 PM

There are 1000 pine trees per square kilometer in a North Carolina forest. This information tells us

You need to be way more specific

ANSWERED AT 01/04/2020 - 01:21 PM


QUESTION POSTED AT 01/04/2020 - 01:21 PM

What four things are necessary for evolution to take place?


Reproduction, heredity, difference in fitness of organisms and difference in character among population.

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


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

Describe the function of each organelle. 1- Nucleus 2- Ribosome 3- Endoplasmic reticulum 4- Golgi apparatus

Answer and explanation;

Nucleus, Ribosome, Endoplasmic reticulum, and Golgi apparatus are among the cellular organelles that are tasked to different activities in a cell.

Nucleus;

  • It is the control center of the cell. It controls all the activities and functions of a cell, such as cell metabolism and reproduction.
  • Additionally; the nucleus contains the genetic material, that is, the DNA, which carries the information that is used to make proteins through the messenger RNA.

Ribosomes;

  • Ribosomes are organelles that are either found suspended in the cytoplasm or attached to the rough enedoplasmic reticulum.
  • They are sites for protein synthesis and carry out this fuction by assembling the amino acids in the apropriate sequences as instructed by the mRNA.

Endoplasmic reticulum;

  • This is a network of membranous canals filled with fluid. They carry material through out the cells,
  • They are two types; the rough endoplasmic reticulum and the smooth endoplamic reticulum.
  • Rough ER is lined with the ribosomes, and helps in the transportation of proteins to the golgi apparatus.
  • Smooth ER has no ribosomes, and functions in the making and transportation of lipids.

Golgi apparatus.

  • They are also called golgi bodies. They are stacks of flattened membranous stacks.
  • Their function is to process and package proteins. Golgi apparatus also synthesis lysosomes.

ANSWERED AT 01/04/2020 - 01:17 PM


QUESTION POSTED AT 01/04/2020 - 01:17 PM

How do viruses reproduce?

Idk how did you get produced? ((It's a joke I'm sorry )) all I know is they can only be changed or obtained but not lost.

ANSWERED AT 01/04/2020 - 01:16 PM


QUESTION POSTED AT 01/04/2020 - 01:16 PM

A student has noticed that she can't see objects clearly when they are far away. An eye doctor diagnoses her as being nearsighted. What type of lens could help the student correct her vision problem? A.) Convex lens B.) Flat lens C.) Diverging lens D.) Converging lens

✦ Explanation

The best lens for nearsightedness would be diverging lens. It helps equip the eye to see things clearly when they're far away. 

Answer: Letter C

Hope that helps! ★ If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia

ANSWERED AT 01/04/2020 - 01:16 PM


QUESTION POSTED AT 01/04/2020 - 01:16 PM

Which group of plants is MOST adapted to live in regions where the layer of soil beneath the surface stays frozen all the time?

Im pretty sure its Xerophyte.

ANSWERED AT 01/04/2020 - 01:15 PM


QUESTION POSTED AT 01/04/2020 - 01:15 PM

Who is at the biggest risk of developing type 1 diabetes A. A 10 yo boy B. A 35 yo woman C. A 50 yo man or D. A 75 yo woman

I believe it is D because as you get older your  risk for developing type 1 diabetes is greater than at a younger age. Type 1 typically affects older individuals whereas type 2 usually affects younger individuals. 

ANSWERED AT 01/04/2020 - 01:10 PM


QUESTION POSTED AT 01/04/2020 - 01:10 PM

The demand on the Earth's lithosphere is dramatically increasing. Why should we look for alternative sources of energy other than just relying on fossil fuels? A) Fossil fuels are non-renewable and exhaustible and their combustion causes air pollution. B) Fossil fuels are renewable and plentiful, but their combustion causes air pollution. C) Fossil fuels are plentiful, so alternative sources are not needed. D) Fossil fuels are not profitable for energy companies.

A. the reason they are called non-renewable resource is that it takes a long time to for them to regenerate-basically longer then our lifespan. Also they do cause air pollution-which is causing the green house affect that is putting the demand on Earth's Lithosphere.

ANSWERED AT 31/03/2020 - 10:48 AM


QUESTION POSTED AT 31/03/2020 - 10:48 AM