Answer:
Physical activity is defined as any bodily movement produced by skeletal muscles that results in energy expenditure. The energy expenditure can be measured in kilocalories.
I hope this helps
somebody help me plzzz
Answer:the correct answer is D:) can i have brainly?
Explanation:
Answer:
D. a hypothesis
Explanation:
The statement starts with an if, thus meaning that it is yet to be known and that an experiment has to be carried out first.
Someone please help ill give you brainliest!!!
Answer:
Work is the transfer of energy , Energy is the capacity for doing work , and Power is work being done in a unit of time.
There are 2 types of energy
Kinetic Energy : Energy of Motion
Potential Energy : Stored Energy
When calculating work energy and power you use WORK = W=Fd
Because energy is the capacity to do work , we measure energy and work in the same units. Power's SI unit of measurement is the Watt, representing the generation or absorption of energy at the rate of 1 Joule/sec. Power's unit of measurement in the English system is the horsepower, which is equivalent to 735.7 Watts.
A toy car accelerates 1.25 m/s2 when a child pushes it with a force of 0.1 newtons. What is the mass of
the car?
Answer:
0.089
Explanation:
The formula to solve for mass is:
m=F/a
So, The force is 0.1, and the acceleration is 1.25^2.
First you must square 1.25, which will give you 1.12 ( I rounded).
Now, we have 0.1/1.12, which equals 0.089, or 0.09.
I really hope this helps.
explain what natural selection is and how it occurs
Answer:
Natural selection is when an animal adapts to their environment to survive and produces more offspring. It occurs when the animal isn’t thriving in their environment and they make adaptions to where they can survive.
Explanation:
An example of natural selection is, a bird used to have a really thick and short beak. But to have more access to food they adapted to their environment and now have a long and skinny beak.
Hope this helps :)
enzymes are important because they contain what?
Answer:
Enzymes are proteins that serve as catalysts for certain chemical reactions. They help the human body properly digest food and break down molecules into smaller units so that the intestines can absorb all its nutrients. Enzymes occur naturally in several foods and eating them raw gives the body an ample supply to help properly digest food, maintain optimum condition of the internal organs, as well as fight cancer cells
Explanation:
Enzymes is on
Sprouts
Nuts and Seeds
Fruits and Vegetables
Papaya and Pineapple
Which letter in the image above represents the activation energy of a reaction
WITHOUT an enzyme present?
C
B
A & B
A
Answer: B
Explanation: Because the Red shows activity
Activation energy is defined as the minimum amount of energy required for activating the atoms or molecules to undergo chemical transportation or transfer.
The correct answer is:
Option D. The letter A.
In the graph, activation energy can be explained as:
1. The activation energy is the minimal amount of energy necessary for the compounds to participate in the chemical reaction.
2. In the graph, the activation energy without the enzyme is represented by A, the activation of energy with enzyme is represented by B, and the change in the free energy is represented by C.
Thus, the correct answer is Option D.
To know more about activation energy, refer to the following link:
https://brainly.com/question/11334504
Chad drew a diagram to compare animal cells and bacterial cells.
Which label belongs in the area marked X?
nucleus
DNA
cell wall
ribosomes
Answer:
It’s nucleus
Explanation:
have a good day;)
Answer:
1, nucleus.
Explanation:
Which one of the following components is responsible for the clotting of blood? Select one: O a plasma O b. leukocytes O c. hemoglobin O d. thrombocytes
Answer:
D. thrombocytes
Explanation:
The main function of thrombocytes is to stop the bleeding of injured blood vessels. In mammals, thrombocytes are anucleated cell fragments called platelets.
Thrombocytes is responsible for the clotting of blood.
What are thrombocytes?
The microscopic blood cells known as platelets, or thrombocytes, aid in blood coagulation. Your body naturally stops bleeding with platelets.
Plasma, red, white, and platelet-containing blood cells make up whole blood. Platelets, the lightest component of whole blood, are pushed to the walls of your blood vessels because they are the heaviest part of the blood.
This allows plasma and blood cells to flow through the center, allowing platelets to reach injury rapidly to stop bleeding.
Therefore, Thrombocytes is responsible for the clotting of blood.
To learn more bout thrombocytes, refer to the link:
https://brainly.com/question/14095336
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Describe the structure and function of the cell membrane.
Answer:
The cell membrane, therefore, has two functions: first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
Explanation:
12. An atom with an atomic number of 34, and a mass number of 79 has:
protons
neutrons
electrons
b. 45 Protons, 45 Neutrons, 34 Electrons
a. 34 Protons, 45 Neutrons, 34 Electrons
c. 45 Protons, 34 Neutrons, 34 Electrons
Answer:
Answer is A.
Explanation:
atomic number is number of protons.
atomic mass is protons + neutrons
and electrons = number of protons
What’s the answer? Fastest gets brainliest if it works!
Answer:
b) Water
Explanation:
Cellular respiration or aerobic respiration is a series of chemical reactions which begin with the reactants of sugar in the presence of oxygen to produce carbon dioxide and water as waste products.
What is never found inside the lipid bilateral of a cell membrane
Answer:
Cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids.
Explanation:
Cell membranes serve as barriers and gatekeepers. They are semi-permeable, which means that some molecules can diffuse across the lipid bilayer but others cannot. Small hydrophobic molecules and gases like oxygen and carbon dioxide cross membranes rapidly. Small polar molecules, such as water and ethanol, can also pass through membranes, but they do so more slowly. On the other hand, cell membranes restrict diffusion of highly charged molecules, such as ions, and large molecules, such as sugars and amino acids. The passage of these molecules relies on specific transport proteins embedded in the membrane.
Study the image.
What do the arrows at point 3 indicate?
A) Warm air is cooling quickly.
B) Cool air is above water.
C) Cool air is warming quickly.
D) Warm air is above land.
Answer:
The answer is C
Explanation:
Answer:
A
Explanation:
The warm air is sinking meaning that it's cooling down. Cooler air is denser that's why they sink while warmer air is less denser, it rises.
How does the nervous system work together with the digestive system?
Explanation:
The autonomic nervous system controls the tone of the digestive tract. The brain controls drinking and feeding behavior. The brain controls muscles for eating and elimination. The digestive system sends sensory information to the brain.
Anne was observing a cell under a microscope which was undergoing binary fission. Which type of cell was Anne observing?
A.
Eukaryotic animal cell
B.
Eukaryotic plant cell
C.
Prokaryotic cell
NEED ANSWERS FOR ALL 3 PLEASE
I NEED THIS ASAP PLZ / I WILL NAME YOU BRAINLIEST PLEASEEE!! What might happen to the Burmese python population over time as it reaches or surpasses its carrying capacity in South Florida? How might other organisms in the ecosystem be affected? What might happen to the population sizes of various types of organisms in the Everglades?
Answer:
As the Burmese python surpasses its carrying capacity in South Florida, the overpopulation of it leaves less resources for each python, and other organisms. Predators may have way too many pythons, and not be able to keep the balance, and prey might be over hunted or eaten. The population sizes may decrease due to the over-population of the pythons.
Explanation:
If there are ever too many of any ORGANISM in a ecosystem, the balance is sure to be ruined.
Hope this helps!
which of the following is NOT a component of a virus
Answer:
what are the options
Explanation:
What process brings energy and matter into living systems
Answer:
Photosynthesis
Explanation:
This is a role in the cycling of matter and flow of energy into and out of organisms. The flow of energy and cycling of matter can be traced.
What is the theory of natural selection, and why does it occur in an organism?
Answer:
Natural Selection is survival of the fittest aka Darwinism. It basically states that the strongest survive and the weakest don't. Maybe it's through food shortages, bad weather, or predators. It occurs in an organism for population control. If there is too big of a population, then there will be a recourse drought and natural selection will do its thing again.
what is a defining characteristic in eukaryotic cells? What type of organisms have eukaryotic cells
Answer:
The defining feature of a eukaryotic cell is the presence of a nucleus. Most animals and plants have eukaryotic cells.
Explanation:
Eukaryotic cells have a nucleus, and membrane-bound organelles All multicellular organisms are made up of eukaryote cells
Eukaryotic cells are one of the two types of cell types prokaryotic and eukaryotic. There are various structural and functional differences found in them.
Eukaryotic cells are defined by:
the presence of a nucleus enclosed by a complex nuclear membranepresence of membrane-bound organellescell wall may or may not be presentcell division is mitosis or meiosisEukaryotic organisms have various range of organisms including mostly all multicellular such as animals, plants, fungi, and protists, as well as most algae. Eukaryotes can be single-celled as well.
Thus, the eukaryotic cells have a nucleus, All multicellular organisms are made up of eukaryote cells
Learn more about prokaryotic cells:
https://brainly.com/question/7153285
hi pls help if u can,, will mark brainliest
1. How many food chains make up the food web?
2. Which organism is an herbivore?
3. Which organism is an autotroph?
4. Which organism is a third-order heterotroph? To what trophic level does that organism belong?
5. Which organism is an omnivore?
6. Which organisms belong to more than one food chain?
7. Which organism belongs to more than one trophic level?
8. What are decomposers? From which trophic levels are the organisms that decomposers feed on?
9. What does a pyramid of energy show about the amount of energy available at different trophic levels of a food chain?
10. Why do different trophic levels have different amounts of energy?
Answer:
1. 3
2. insects
3. plants
4. snakes the 4th
5. birds
6.plant, bird, insect, snake
7. birds
8. Decomposers are organisms (bacteria and fungi) that break down dead organisms. They could be at all trophic levels
9. pyramid of energy shows how much energy is retained in the form of new biomass at each trophic level, while a pyramid of biomass shows how much biomass (the amount of living or organic matter present in an organism) is present in the organisms.
10. energy is lost at each level. Most of the energy lost is lost as heat. Food webs and food chains both involve multiple trophic levels.
please help asap i will mark brainliest
Answer:
the last one
it has one side that is positively charged and one side that is negatively charged
Answer:
D
Explanation:
A water molecule, because of its shape, is a polar molecule. That is, it has one side that is positively charged and one side that is negatively charged. The molecule is made up of two hydrogen atoms and one oxygen atom. The bonds between the atoms are called covalent bonds, because the atoms share electrons.
Describe how an enzyme’s structure affects its function:
Answer:
Most enzymes are proteins and therefore their function is specific to their structure. Enzymes function as a catalyst to increase the rate of virtually all the chemical reactions that take place in a living system
Explanation:
How is oceanic crust formed?
Answer:
it is constantly formed at mid-ocean ridges, where tectonic plates are ripping apart from each other.
What would happen inside a cell if it's lysosomes had leaky membranes
Answer:
Explanation:The membrane "sacks" would have to be broken open in order for the enzymes to reach the interior of the cell.
Answer:
If the lysosomes had a leakage, then it could cause plasma membrane disruption.
Cytoskeleton has 3 functions?
Genetic information, color, movement
Gives cells their specific shape, severs as tracks, enables movement
It has NO function
Energy, shape and color
Answer:
I believe the answer is gives cells their specific shape, severs as tracks, enables movement
I need help with this
Answer:
So...
Explanation:
As well as carbohydrates, lipids also contain carbon, hydrogen and oxygen (since they have a hydrocarbon chain and glycerol backbone)
Proteins can also contain nitrogen atoms (amino acids); proteins also have an 'R' group; proteins also are folded structures
The nitrogen, phosphate groups, carbon rings are component phospho(lipids)
Lipids also have fatty acid chains and glycerol
Hope that helps! x
Are most environmental issues local problems or global problems?
How can or will this affect the way we try to solve these issues?
How are environmental issues becoming more complex?
What about the history of environmental studies can inform us about our current environmental issues? Why is it important to understand the past to help solve current and future environmental problems?
Answer:
Most environmental issues are problems on a global scale, these include but are not limited to, global warming, ozone pollution, greenhouse gases and many more issues.
This affects the way we try to solve these issues because if we dont all play a part to help change the way things are going, then they will only get worse. We have to come together as a whole.
Unlike individual efforts, different countries can cooperate and implement legislation which limitates all the countries in the globe,solving environmental issue more efficiently.
pls help will mark brainliest.
Answer Q1-7 using the food web pictured below.
1. How many food chains make up the food web?
2. Which organism is an herbivore?
3. Which organism is an autotroph?
4. Which organism is a third-order heterotroph? To what trophic level does that organism belong?
5. Which organism is an omnivore?
6. Which organisms belong to more than one food chain?
7. Which organism belongs to more than one trophic level?
Answer:
1) 3
2) Insect
3) Plant
4) Snake; 3rd
5) bird
6) All of them
7) bird
Explanation: