· In an open system matter and energy can be transferred
· In a closed system only energy can be exchanged
· In an isolated system neither matter nor energy can be exchanged
· The cell has to be an open system because it needs to exchange matter and energy and the only way to do so is through an open system
· As an open system the cell allows nutrients to enter the cell and waste products to exit the cell
· The cell does this through the use of a semi-permeable membrane
· It needs nutrients in the forms of glucose, ions and many other molecules.
· The nutrients can come into the cell through either passive or active transport
· In passive transport the nutrients naturally move from a higher concentration gradient to a concentration gradient.
· During active transport the particle need to move against the concentration gradient. To do this the cell needs energy to transport the materials. The energy comes in the form of ATP.
2. Why are humans considered animals?
A. Their zygotes undergo changes to turn into a blastula.
B. Human cells have cell walls and are unable to move.
C. Humans can reproduce asexually when under stress,
D. Animals and humans are both uni-cellular organisms.
Answer:
It's A
Explanation:
Had it on a test
Humans are considered animals because as in animals zygotes after cell division turns into a blastula, hence option a is correct.
What are animals?More than any other species, humans are capable of learning new things. Indeed, the majority, but not fully, of what distinguishes us from other animals is anchored in language.
In addition, because we have a backbone, humans are considered to be members of the chordate animal phylum.
The zygote is split into the blastula after fertilization, three germ layers develop in the blastula, which in some species is a hollow ball of cells, during a process known as gastrulation.
Therefore, humans are classified as members of the primate order within the animal group and having the blastula stage, hence option a is correct.
Learn more about animals, here:
https://brainly.com/question/12486476
#SPJ2
Sometimes individuals at one extreme of a phenotypic distribution are favored in a particular environment, for example, selection will strongly favor insects that have very high resistance to an insecticide. In such cases, the type of selection that operates is
Answer:
directional
Explanation:
We define directional selection as a type of natural selection whereby a phenotype is favored in preference to other phenotypes hence, the entire allele in the population will tend to shift in that particular direction .
This is clearly demonstrated in a scenario whereby insects that have very high resistance to an insecticide tend to survive better in an environment compared to other insects that do not exhibit this phenotype.
what is the name given to the male cell in the flower
Answer:
The name given to the male cell in the flower is called stamens and usually surrounds the pistil.
Explanation:
Hope this helps.
THREE USES THAT CELLS MAKE OF THE ENERGY RELEASED BY ATP
Answer:
ATP provides the energy needed for many essential processes in organisms and cells. These include intracellular signaling, DNA and RNA synthesis, Purinergic signaling, synaptic signaling, active transport, and muscle contraction.
Explanation:
What are two ways in which white blood cells fight pathogens that have entered the body?
Answer:
They release anti-toxins, which neutralise effect of toxins produced by bacteria
They destroy pathogens is by engulfing/ingesting them.
If constructive interference occurs when two waves are cresting, it will decrease the height of the crest.
True
False
Answer:
True is the answer for your question. Mark me as the brainliest first please.
Explanation:
Answer:
False
Explanation:
I said true because of the other person and it was wrong. Trust me it’s False
In your own words, what is the definition for the word Cytokinesis?
Answer: division of a cell at the end of mitosis or meiosis
Explanation: cuz im smart
Answer:
PLZ MARK ME BRIANLIEST..
Explanation:
Cytokinesis: During cell division, the process that partitions the cellular contents including the chromosomes, cytoplasm, and organelles into the two daughter cells. Cytokinesis occurs just after the segregation of the duplicated genome.
When two aqueous solutions that differ in solute concentration are placed on either side of a semipermeable membrane and osmosis is allowed to take place, the water will Group of answer choices exhibit a net movement to the side with lower solute concentration. exhibit a net movement to the side with lower free water concentration. exhibit an equal movement in both directions across the membrane. exhibit a net movement to the side with higher free water concentration
Answer:
exhibit a net movement to the side with lower free water concentration
Explanation:
The correct answer would be that the water will exhibit a net movement to the side with lower free water concentration.
Osmosis is generally defined as the movement of water molecules through semi-permeable membranes from the region of higher water potential or lower solute concentration to the region of lower water potential or higher solute concentration.
From the definition, it becomes obvious that there would be a net movement of water between the two solutions to the side with higher solute concentration or lower free water concentration.
What is the plural of drive-in? Use a dictionary if necessary.
O drives-in
O drive-ins
O both
choose the correct option :-
Q: Who is known as father of Zoology
A) Darwin
B) Aristotle
C) Lamark
D) Theophrastus
Q: The corner of the cells of collenchyma tissue in plant are thickened due to deposition of _____
A) Lignin and suberin
B) Suberin and cutin
C) Cellulose and pectin
D) Chitin and lignin
Answer:
Q1.
B) Aristotle
Q2.
C) Cellulose and pectin
Answer:
Q:
Aristotle
Q:
cellulose and pectin
Define Peripheral Nervous System.
Answer:
The peripheral nervous system is one of two components that make up the nervous system of bilateral animals, with the other part being the central nervous system.
Explanation:
ANATOMY
the nervous system outside the brain and spinal cord.
explain why films maker must make sure the light intensity is right for filming
Explanation:
because the scene should be realistic to watch, that's all
A cloned mammal is made by removing the DNA from the unfertilized egg of an egg donor, replacing it with DNA from a cell of a mature animal, and then implanting that cell into the uterus of a surrogate mother. The cell then divides and behaves as if it were a regular embryo. Answer the following question(s) regarding a clone.Of whom is the baby a clone?
Answer:
The mature animal
Explanation:
The baby would be a clone of the mature animal whose DNA was placed in the unfertilized egg before being implanted into the uterus of a surrogate mother.
The DNA of the egg donor has been removed and replaced with the DNA of the mature animal. The surrogate mother is just a mere carrier and has no biological relationship with the clone. The only organism with biological relationship with the clone would be the one that donates its DNA, which in this case is the mature animal.
The water cycle is a closed system, meaning no water enters from beyond the system nor leaves the
system. What does that say about the importance of keeping water on Earth free from pollution?
Answer:
there are no possible changes adaptations
Explanation:
what i mean by that is if a substantial amount of pollution enters the water cycle its going to be nearly impossible for it to get out
If water present on earth is polluted anywhere in the cycle, it starts affecting the system of water and percolation as well as plants become limited that what they will do in order to clean the water. It is possible that if ground is polluted than water will also get polluted. It means that the water present on earth is same the water present from the beginning and will continue to be the same water that is available.
What is groundwater?Groundwater has been defined as water present in the underground water below the soil as well as in the cracks of the earth. The percentage of freshwater in the world would be 30%. There are mainly three types of groundwater and these are hand-dug wells, as well assprings, and drilled boreholes.
The water stored under the ground has obtained from the rain and stored in the ground so that it can be used later. Ground water has very clean and fit for drinking and the reason could be the soil present on top and work as filter and the groundwater is free from all microorganisms.
Therefore, If water present on earth is polluted anywhere in the cycle, it starts affecting the system of water and percolation as well as plants become limited that what they will do in order to clean the water. It is possible that if ground is polluted than water will also get polluted. It means that the water present on earth is same the water present from the beginning and will continue to be the same water that is available.
Learn more about groundwater here:
https://brainly.com/question/13160768
#SPJ2
which type of data is qualitative data
a)height in meters
b) volumes in milliliters
c) calculations of density
d) descriptions of behavior
Answer:
d
Explanation:
qualitative data is typically descriptive data
can someone help me complete the unfinished DNA strands please?
Answer:
it is T G C A T
Explanation:
as in DNA adenine pairs with thymine and cytosine with guanine. You can also remember it as Apple Tree and Car Garage
Cattle ranchers would rely on which forecast to best care for their livestock?
Wet Bulb Globe Temperature Forecast
Heat Stress Forecast
Heat Index Forecast
Precipitation Forecast
Answer:
Heat Index Forecast
Explanation:
Weather forecasts help the farmers to lower plant productive and pests. Applying disease control and controlling the crops pest and unwanted guests. The heat index forecast is an index that combines the use of temperatures and humidity. It is condition that is expressed in outdoor activity. Livestock ranchers have to find places to keep their cattle can freely graze hence forecast method is important for taking care of their livestock.Answer: heat stress forecast
Explanation:
First of all go vegetarian, don’t eat precious cows. Second of all it’s heat stress forecast that’s what comes up when you search it ( meat industry- ew)
What factors differentiate Earth's atmospheric layers?
A. Pressure and Rate of condensation
B. Radiation deflection and Rate of condensation
C. Temperature and Pressure
D. Temperature and Radiation deflection
Plz help
Answer:
What factors differentiate Earth's atmospheric layers?
A. Pressure and Rate of condensation
B. Radiation deflection and Rate of condensation
C. Temperature and Pressure
D. Temperature and Radiation deflectionThe condition of muscle fatigue is best explained by: Question 1 options: insufficient intracellular quantities of ATP due to excessive consumption the inability to generate sufficient quantities of ATP due to feedback regulation of synthesis the all or none law lack of intracellular calcium
Answer:
The correct answer is ''insufficient intracellular quantities of ATP due to excessive consumption''
Explanation:
The energy source for the muscle to contract efficiently is adenosine triphosphate (ATP). When ATP is metabolized, energy is obtained. Under normal conditions, the muscle has a sufficient energy reserve to support a limited time of maximum activity. When this reserve is depleted, the body activates other metabolic pathways to achieve more ATP. Glucose is activated first, then carbohydrates, and last - only if the exercise is prolonged - lipids (fats). The muscle, therefore, ends up transforming this ATP into the necessary energy.Whether our body uses more fat or more glucose / glycogen as fuel will depend, above all, on the intensity and duration of physical exercise. The body uses more fat the more gentle and prolonged the exercise; while, the more intense the sport, the more important the need for glycogen will be.Muscle fatigue is the inability or lack of strength to continue doing a certain activity. It happens when the muscles are not strong enough to continue. Specifically, when carrying out a physical activity, the active muscle requires oxygen and energy reserves of glycogen; When the intensity of the activity is increased, this need for oxygen increases, exceeding the levels that the transport system is capable of providing.This situation leads to the active muscle looking for another source of energy, increasing lactic acid which, in turn, it develops a metabolic acidosis that can lead to the breakdown of muscle fiber. ATP is obtained from the oxidative degradation of metabolic substrates such as muscle glycogen, serum glucose, free fatty acids originating from muscles or adipose tissue, being characteristic of muscle fiber, the consumption of ATP, and the production of ADP and Pi, much faster than it regenerates.
A climate zone is an area that is defined by two main factors. What are they?
Temperature and weather
Precipitation and climate
Weather and climate
Temperature and precipitation
Answer:
Temperature and precipitation.
Explanation:
Climate is defined as long-term climate patterns in a location. Looking at average temperature and precipitation through time is the simplest way to characterize the climate.
Temperature and precipitation are the two most significant factors in the climate of a place. Obviously, the annual average area temperature is significant, but the annual temperature range is important as well. Some locations range from the highest to the lowest temperature significantly wider than others. Average precipitation is very essential, but the annual change in precipitation is equally important. Some regions experience approximately the same precipitation year-round. For half of the year, other locations have very low precipitation while the other portion of the year has lots of precipitation.
Answer:
d
Explanation:
:D hope it helps!
Manpower is the most important resource of an organization. Explain.
Answer:
Manpower planning is counted as the most important function of the human resource management of the organization. It helps in managing the maintenance of the business goodwill by providing value to the man, material, machine and money.
Which of the following is NOT true of
autotrophic protists?
A. these organisms can start food chains as producers
B. examples are like phytoplankton, dinoflagellates, and euglena
C. they feed off of other organisms
Answer:
C. they feed off of other organisms
Explanation:
Autographs, as the word auto suggests (auto : self) , produce their own food. So they wont feed on other organisms for their survival.
Therefore, option C is incorrect and since we have to find the incorrect option that is the answer.
Answer: C. they feed off of other organisms
Explanation:
Describe your environment
Answer:
Answer to the following question is as follows
Explanation:
The term "environment" refers to everything that surrounds us. It might be living creatures (biotic) or non-living objects (abiotic). Mechanical, biochemical, and other forces of nature are all part of it. ... Animals, vegetation, soil, water, and other moving and non-living objects interact in various ways in the surroundings.
why animal-like organisms did not appear on Earth until after the first
organisms that could photosynthesise had appeared.
Answer:
800 million years ago , these clusters of specialized, cooperating cells eventually became the first animals, which DNA evidence suggests evolved around that time. Sponges were among the earliest animals.
a. A breakdown of U.S. household garbage reveals the largest amount percentage-wise is paper and paperboard. b. In U.S. households most of the water usage is in the bathroom. c. The founder of the modern environmental movement and author of Silent Spring is Rachel Carson d. Deciduous trees such as most pines do not lose their leaves/foliage in winter.
Answer:
c. The founder of the modern environmental movement and author of Silent Spring is Rachel Carson
d. Deciduous trees such as most pines do not lose their leaves/foliage in winter.
Explanation:
Yes, Rachel Carson is the founder of the modern environmental movement as well as author of Silent Spring. She was an American marine biologist, author, and conservationist which started the modern environmental movement in order to save the environment form pollution. Yes, the Deciduous trees such as most pines do not lose their leaves/foliage in winter, they only lose those leaves that are too old. They are considered as evergreen plants.
Which hypothetical antibiotic would treat bacterial infections by interfering with bacterial reproduction
Answer:
bacteriostatic
Explanation:
Bacteriostatic is a type of antibiotic that can treat bacterial infections because the this chemical attack on the reproductive system of bacteria so that they can't multiply or increase in number. This Bacteriostatic is a biological or chemical agent that prevent bacteria from reproducing by not directly killing them. Depending on their application, bacteriostatic is considered as antibiotics and disinfectants.
Bjr pouvez vous m'aider
Answer:
no entiendo este idioma soy nuevo y hablo español
Explain how the structures in the gas exchange system cause inspiration.
Inspiration is a process in which the lungs receives air from the extrinsic environment.
The process of gas exchanges involves a number of organs and tissues in the body of certain organisms. However, respiratory muscles as part of the body, are used in gas exchange and chiefly used in inspiration.
Inspiration occurs as a result of muscles contraction (for instance, diaphragm and the external inter-coastal muscles) and thus, increasing the volume of the thoracic cavity, which leads to the decrease in the atmospheric pressure in the lungs to supply air (oxygen) into the body.
In other way round, the relaxation of the these muscles brings about expiration i.e., release of gas out of the body.
check below link for more information on gas exchange system:
https://brainly.com/question/19126049
The last common ancestor of all animals was probably a(n) The last common ancestor of all animals was probably a(n) algae. chytrid. yeast. protist. fungus.
Answer:
The correct answer is - protist.
Explanation:
Protist is a single-celled eukaryote that contains organelles. It is the last common ancestor of all animals as is consider as most primitive animal cells as it has no cell wall but contains the nucleus and other double-membrane organelles. The protists are the cell that distinguishes fungus, plant cells, and animal cells into these three different kingdoms.
Thus, the correct answer is - protist.
true or false each human somatic cell contains two copies of each chromosomes for a total of 23 chromosomes
Answer:
I'm pretty sure it might be false
