Answer:
1. The first statement is true because water movement takes place until it reaches an equilibrium.
2. The second statement is false because the concentration inside the cell will be greater until water moves inside the cell.
3. The third statement is true because solute concentration is high outside.
4. The fourth statement is true because it loses water in a hypertonic solution.
When do enzymes stop reacting to the substrates?
Answer:
If the reaction is divalent metal ion-dependent, you can stop the reaction by adding an excess of EDTA to bind the metal.
You can kill the protein by adding perchloric acid, then precipitate the perchlorate with an equivalent amount of potassium carbonate, leaving nothing but carbonic acid in the supernatant, which bubbles off as carbon dioxide. Centrifuge the sample and take the supernatant to analyze for the product.
A rather slow method is ultrafiltration, using a micro-centrifugal ultrafilter (e.g. Microcon) with a molecular weigh cutoff smaller than the molecular weight of the enzyme. This can be done at 4oC to slow down the reaction during the separation.
Explanation:
I need help please !
Answer:
14. f. diffusion
15. a. excreting waste
16. b. exocytosis
17. a, endocytosis
Explanation:
14. The movement of molecules from a high concentration to a low concentration is diffusion. Active transport uses energy to move molecules against their concentration gradient (from low to high). Osmosis specifically refers to water molecules. Endocytosis is the movement of molecules inside the cells via the cell membrane engulfing it.
15. The membrane controls the substances that enter and exit the cell, therefore it is involved in excreting waste products from inside the cell.
16/17 Endocytosis is engulfing substances to bring them inside the cell. Exocytosis is the reverse process, where substances exit the cell by fusing with the cell membrane. The movement of molecules from a high concentration to a low concentration is diffusion. Osmosis specifically refers to water molecules.
As the human population grows, what happens to our natural-resource requirements?
They increase.
They decrease.
They do not change.
They go in cycles.
Answer:
A: They increase
Explanation:
Edge2021
As the human population grows, our natural-resource also increases which is denoted as option A.
What are Resources?This is referred to as a substance which enables an individual make profits or benefits.
When human population grows, wants also increases which will lead to an increase in the natural-resource requirements.
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Are ecosystems at the edge of forests more likely to stay healthy, or ecosystems in the interior of forests? Explain your choice.
Answer:
Interior because it is harder for humans to get machinery inside to chop down trees or harvest natural resources. They must start destroying from the edge inwards.
Explanation:
Answer:
The ecosystem in the interior of forests stay healthy.
Explanation:
Ecosystem at the edge of the forests are exposed to many things that can affect it and ecosystem in the forests are untouchable and are exposed to things that naturally occurring.
Which of the following is an example of a non contact force
Answer:
Gravity, Electrostatic force, Magnetic force
Explanation:
A non-contact force is a force that is applied to an object by another object without contact. Gravity, electrostatic force, and magnetic force all don't need two objects to be touching in order for them to work.
On the other hand, an example of a contact force is friction, because it can only occur if two objects are touching. If you want to tell the difference between a contact and non-contact force, just ask yourself if it can occur if the two objects are not touching. If it can occur while two objects aren't touching, it is non-contact, and if it can't, it is contact.
All the options given describe a force that involves contact except for the force exerted by magnets. Thus, the correct option is C.
Magnetic force is the force exerted by magnets. It can be described as the effect exerted on a charged particle due to the magnetic field of the other particle.
It is a consequence of the electromagnetic force, which is caused due to the movement of electrically charged particles.
Two objects that are oppositely charged will have a magnetic force of attraction, whereas two objects that have the same charge will have a magnetic force of repulsion.
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Your question is incomplete. The full question probably might be:
Which of the following is an example of a non-contact force?
(a) The force exerted by us to lift a bucket
(b) push a stationary car
(c) The force exerted by magnets
(d) Force due to friction
Cells use ATP to…
A) move molecules, ions and other substances across membranes
B) make new cells
C) decompose old cells
D) make cell membranes stronger so molecules can not pass through
1. What is a predator and what is a prey? 2. How do they impact each other both positively and negatively, use clear details/examples to explain
Answer:
A predator is usually an animal who mostly eats and it's not eaten by other organisms. A prey is are organisms who are eaten by other animals.
Explanation:
Which two of the three elements have SIMILAR CHEMICAL PROPERTIES (valence electrons)?
1. Li - Na - Mg
2. F - Br - O
3. P - As - Se
4. Ra - Ba - Cs
Answer:
1. Li - Na
2. F - Br
3. P - As
4. Ra - Ba
if a star is moving towards earth it is
Answer:
a shooting star even thou its just a burning rock with a flame tail shooting across the sky XD
Explanation:
Answer:
A shooting star
Explanation:
During which stage of the life cycle is a star a ball of gas and dust?
Answer:
The sixth stage in a low mass stars life, the remains of the red giant is a glowing ball of gas about the size of earth. Nuclear fusion has stopped and the gas begins to cool.
Which of the following statements is true for a molecule that is phosphorylated?
A) It has been reduced as a result of a redox reaction involving the loss of an inorganic phosphate.
B) It has a decreased chemical energy and is less likely to provide energy for cellular work.
C) It has been oxidized as a result of a redox reaction involving the gain of an inorganic phosphate .
D) It has increased chemical potential energy that may be used to do cellular work.
Answer:
The correct appropriate is Option D.
Explanation:
The phosphorylation mechanism of both a chemical compound, either through inorganic phosphate conversion other than by phosphate conversion from yet another biological phosphate. Those have improved chemical energy capacity which could be used to do cellular function.Some other possible alternatives are not connected to the situation described. So, the solution above is the right one.
The statement 'it has increased chemical potential energy that may be used to do cellular work.' is TRUE about a molecule that is phosphorylated (Option D).
Phosphorylation is a posttranslational protein modification that plays a fundamental role in many cellular processes.Phosphorylation increases the potential energy of a molecule by adding a phosphate group that contains a high-energy phosphate bond.The energy released by this phosphate bond can be used to drive many cellular processes.In conclusion, the statement 'it has increased chemical potential energy that may be used to do cellular work.' is TRUE about a molecule that is phosphorylated (Option D).
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please help (5 stars nocap)3
Answer:
C) Chloroplasts
Explanation:
Chloroplasts are the organelle of photosynthesis. They capture light energy from the sun and use it with water and carbon dioxide to make food (sugar) for the plant.
Hope this helps :)
Answer:
c
Explanation:
There are various types of plant cells which include: parenchyma cells, sclerenchyma cells, collenchyma cells, xylem cells, and phloem cells. Parenchyma cells are the major cells of plants.
hope it helps
Which of the following are supported by many
observations?
hypotheses
laws
theories
Answer:
laws.
Explanation:
hypothesis is an educated guess
therous are ideas
and laws are supported by observations. like newton's law.
Answer:
laws and theories
Explanation:
bc i just answered it
which will most likely result in a negative growth rate in the human population of a country
Answer:
The death rate is higher than the birth rate. The birth rate is higher than the death rate.
Explanation:
Fun facts about the endocrine system? Any ideas
Answer:
... does this help ?....
Explanation:
The body's hormones, and the glands that produce them, make up the endocrine system. There are eight major glands, and their job is to regulate the body's metabolism, reproduction, growth and sleep. Like the nervous system, the endocrine system is an information signal system.
Answer:
The endocrine system. ... Traditional Chinese healers practiced endocrinology more than 2,000 years ago. ... The endocrine system is sometimes at fault for osteoporosis. ... The term "hormone" is only about a century old. ... Not all hormones come from the endocrine system. ... Diabetes was once diagnosed by tasting urine.3. How do you make new cells?
Answer:
New cells are created from a process called cell division. The new cells are produced when a cell, called the mother cell, divides into new cells called daughter cells. When two daughter cells have the same number of chromosomes as the original cell, the process is called mitosis
Explanation:
9. List the steps of cellular respiration in order
Answer:
glycoliysis, citric acid cycle, electron transfer chain
In a certain plant, yellow leaves are dominant (Y) and red leaves are recessive yA plant with genotype Yy and a plant with YY are crossed. If they have four offspring, how many would you predict would have red leaves? (Hint. Draw a Punnett square to help you determine the answer) OA. 0 OB. 3 Oc. 1 OD. 2
Answer:
Its 1 I just took the test and answered 0 and got it wrong
Explanation:
If two plants with yellow leaves with YY and Yy genotypes are crossed then all the offspring will have yellow leaves. Thus, the correct option is A.
What is a Monohybrid cross?A monohybrid cross is the hybrid of the two individuals with homozygous genotypes or heterozygous genotypes which result in the formation of opposite phenotype for a certain genetic trait. The cross between the two monohybrid traits such as flower color or plant height is called a Monohybrid Cross.
When two plants, one with homozygous yellow leaves (YY) and one with heterozygous yellow leaves (Yy) are crossed, then the offspring will have yellow leaves and none of the offspring will have red colored leaves as this is a recessive trait and it requires to be present in homozygous condition to show its effect.
Therefore, the correct option is A.
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Which of these best describes a climax community?*
Answer:
A very stable community
Explanation:
A.P.E.X
what happens to energy during cellular respiration
Answer:
During cellular respiration glucose and oxygen are converted into carbon dioxide and water and the energy is transferred to ATP.
Explanation:
How many types of bones are there?
1.) 1
2.) 2
3.) 3
4.) 4
5.) 5
Answer:
Hello!!! Princess Sakura here ^^
Explanation:
There are 5 types of bones and they would be flat, long, short, irregular, and sesamoid.
How are plant and animal cells different in size and shape
Answer:
plant cells are rectangular while animal cells are spherical
Explanation:
plant cells are mostly rectangular due to the cell walls morphing them into that shape while animal cells are more sphere like in order to save space
Hope this helped
the half life of carbon-14 is 5730 years. a corpse is pulled from a bog and tested for C-14 beta radiation. the amount of radiation is 75% of the normal amount coming from living things. how long has the corpse been in the bog?
Answer:
%67
Explanation:
Thoughts on Pokémon?
Answer: i like pokemon ;)
Explanation:
Answer:
Pokémon is a thing that you enjoy more if you grow up with it
Explanation:
A _____ is a substance that speeds up a chemical reaction without being used up in the reaction
Answer:
An enzyme is a substance that speeds up a chemical reaction without being used up in the reaction.
Answer:
Catalyst
Explanation:
One example of a catalyst is yeast, it helps speed up the process of bread becoming fluffy, for example
Name 3 some sources of C02.
Answer:
I am not 100% sure i can't remember but i believe it coal, oil, and natural gas. but I might be wrong.
Answer:
liquid gas and solid
Explanation:
because you can freeze water you can turn water into gas and you can have it regular
Besides poaching, what other major factor is causing a decline in elephant populations?
Answer:Habitat Loss and conflict with communities
Explanation: Habitat loss and conflict with communities
Most elephant habitat still extends outside protected areas, and the rapid growth of human populations and the extension of agriculture into rangelands and forests formerly considered unsuitable for farming mean that elephant habitat is continuing to be lost.
Increasing conflict with people
As human populations expand, more land is being converted to agriculture. So elephant habitat is shrinking and becoming more fragmented, and people and elephants are increasingly coming into contact - and conflict - with each other.
Elephants sometimes raid farmers’ fields and damage their crops – affecting the farmers’ livelihoods – and may even kill people. Elephants are sometimes killed in retaliation.
With human populations continuing to grow across their range, habitat loss and degradation - and conflict with communities - will remain major threats to elephants' survival.
Besides poaching other major factor is causing a decline in elephant populations is habitat Loss and conflict with communities.
What are the reason behind the decline of the population of elephants?The reason behind the decline of the population of elephants are poaching, besides poaching other major factor is causing a decline in elephant populations is habitat Loss and conflict with communities.The logistics growth curve has been defined as the population per capita growth rate is decreases and get smaller and the size of population increases maximum applied by resources which are limited in the environment which is known as the K that has been carrying capacity.
The logistics population growth has been represented by the logistic growth curve on a line graph and the shape of the curve has S - shaped that represents the slow increase, and rapid growth in the population and after that there has been reduction in the growth.
The best example of the logistics growth has observed in the wild population that includes the sheep as well as harbor seals. In both of the cases the number of the population has been increases and carrying capacity for small period of time.
Therefore, Besides poaching other major factor is causing a decline in elephant populations is habitat Loss and conflict with communities.
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Rocks, temperature and water are what part of the environment?
Answer:Biotic factors include animals, plants, fungi, bacteria, and protists. Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.
Explanation:
Cells reproduce by splitting in half, a process called cell division. What do cells need to do between divisions to make sure that they don’t just get smaller and smaller?
Answer:
Grow
Explanation:
Before every cell division, cells replicate their DNA to pass on to the daughter cells. They also grow in size and replicate their organelles to ensure that each daughter cell has sufficient resources to carry out all the activities necessary for its function. They also ensure there are sufficient nutrients to perform their tasts.
Cells only need to grow in size and contents before each cell division so as to avoid getting smaller in size with successive divisions.
Each of the daughter cells produced during mitotic cell division goes through an interphase period. The interphase period is divided into 3:
G1 phase: a period characterized by cell growth. An increase in size and volume of content is achieved in this stage.S phase: a period characterized by the synthesis of DNA. The amount of genetic materials (DNA) doubles up in this stage, whereas, the chromosome number remains constant.G2 phase: a phase in which protein is synthesized. After this stage, the cell is ready to pass through a period of division.Without going through the stages above, a cell will simply go into a dormant phase which is essentially a resting phase.
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Which factors best determine the variety of climate zones on earth?