Answer:
Enzymes function best at specific pH and temperatures.
Explanation:
An enzyme can be defined as a biological catalyst that typically lowers the activation energy of a biological reaction. When the activation energy of a reaction is low, the rate of the reaction would be faster. Therefore, an enzyme speeds or catalyzes the rate of a reaction by lowering its activation energy.
Also, if the conditions are not optimal for an enzyme, it limits the ability of an enzyme to bind or be joined with its substrates.
Hence, the correct statement about enzymes is that enzymes function best at specific pH and temperatures. An increase in temperature increases or speeds up the rate of a reaction while low temperature limits or reduces the rate of a reaction. The optimal temperature for enzymes in the human body is around 37 degrees celsius.
2. Which organisms should be the least common?
Answer: The illustration is missing the type of organisms known as decomposers. They break down dead animals and plants and have the vital role in returning the nutrients back into the system, where they can be used once more by the primary producers.
Explanation:
Biotic and abiotic factors can be limiting factors to a population. True False
Answer:
True
Explanation:
Answer:
true
Explanation: A limiting factor is any biotic or abiotic factor that PROMOTES the existence, numbers, ... True. Factors that limit one population in a community many also have AN ... True. Different species may have different ranges of tolerance.
Which of the following is a function of lipids?
A.They act as genetic material.
B.They increase the rate of reactions .
C.They form chains of amino acids .
D.They store energy for the cell.
Answer:
Explanation:
A.actúan como material genético.
B.Aumentan la tasa de reacciones.
C.Forman cadenas de aminoácidos.
Almacenan energía para la célula.
The innate (non-specific immunity) immune system Select one:
A. is based on phagocytes and antimicrobials contained therein
B. kills bacteria according to the same principle as immunoglobulins
C. requires recognition of a surface epitope by immunoglobulins
D. None
Answer: A. is based on phagocytes and antimicrobials contained therein
Explanation:
The innate immune system a person has is the one that they were born with to help them counter all foreign organisms as it views them as threats to the immune system.
It is based on phagocytes as well as natural antimicrobials that will immediately go into action once foreign organisms are detected in the body to eliminate any threats these organisms might pose.
above.1. ________________________________ is what happens when depolarization of the atria cause the atria to go into atrial systole. Atrial pressure increases and more blood is forced into the ventricles via the AV valves.2. ________________________________ is the continued contraction of the ventricles that leads to the pressure inside the ventricles to build up and will thusforce open the semilunar valves and blood will be ejected out of the heart to the pulmonary and systemic circuits.3. _______________________________is the process that begins when both the atria and the ventricles are in diastole. Blood from the veins are returning to the heart and the pressure within the atria is higher than the ventricular pressure. Causing the AV valves to open and blood will passively fill into the ventricles. It is important to know that the semilunar valves are closed shut because they have higher pressure than both the left and right ventricle.
Answer:
1. Passive ventricular fillings.
2. Ventricular ejection.
3. Atrial contraction
Explanation:
In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
The following terms describe the physical or mechanical events with the correct phases of the cardiac cycle in mammals (human beings).
1. Passive ventricular fillings: is what happens when depolarization of the atria cause the atria to go into atrial systole. Atrial pressure increases and more blood is forced into the ventricles via the AV valves.
2. Ventricular ejection: is the continued contraction of the ventricles that leads to the pressure inside the ventricles to build up and will thus force open the semilunar valves and blood will be ejected out of the heart to the pulmonary and systemic circuits.
3. Atrial contraction: the process that begins when both the atria and the ventricles are in diastole. Blood from the veins are returning to the heart and the pressure within the atria is higher than the ventricular pressure. Causing the AV valves to open and blood will passively fill into the ventricles. It is important to know that the semilunar valves are closed shut because they have higher pressure than both the left and right ventricle.
What holds the DNA in your cells? PLEASE HELP!!!!!!!!!
Answer:
The nucleus
Explanation:
Answer:
nucleus
Explanation:
The nucleus contains most of the DNA in a cell and this DNA is called the chromosomal DNA it is separated from the rest of the cell (cytoplasm) by a double layer of membrane.
Which statement is FALSE about Redi & Pasteur’s experiments?
Question 1 options:
Redi’s independent variable was jar coverings.
Pasteur’s independent variable was boiled broth.
Pasteur’s dependent variable was the growth of microbes (bacteria).
Both experiments were conducted gather evidence to disprove spontaneous generation.
Answer: i think c
Explanation:.
grade 5 science MYA answers 1-10 =
Mr. Powell is demonstrating the water cycle. He shapes mountains out of clay on one end of a glass aquarium to represent land. He then pours some water into the aquarium and places a glass lid on it. Next, he turns on a lamp above the aquarium and, finally, he places a container filled with ice on the glass lid. In this model, which choice correctly identifies evidence of condensation?
a - water droplets falling on the clay
b - less water in the bottom of the aquarium
c - water running from the clay into the water
d - water forming on the lid under the container
PLEASE HELP!!!!!! this is due in 5 mins and this is my only question left o_o
Answer: d - water forming on the lid under the container
Explanation:
Condensation is the process that describes the change of state of water from gas to liquid. It happens in the water cycle when water vapor gets to the atmosphere and due to the lower temperatures turns into liquid water that then forms clouds.
In the demonstration, the container is meant to be the clouds so when water forms under the container, that is condensation happening because the water vapor has not turned back to liquid after leaving the aquarium water as water vapor.
Which one of the following is an example of intrinsic motivation?
Studying for a test because you want to feel proud of your performance
Going to work to get a paycheck
Buying new clothes to impress your significant other
Being nice to your boss in the hopes that she will give you a promotion
(HELP ASAP I'LL GIVE YOU BRAINLIEST)
What company began as an online bookstore in someone’s garage and has grown to a multi-billion dollar business that is innovating drone delivery, cashier-less and checkout-less grocery stores?
A.
Amazon
B.
Wal-Mart
C.
Etsy
D.
Spotify
Answer:
A. Amazon
Jeff Bezos' parents invested 250,000$ in his business.
How does the skin protect the body against illness? Select two options.
The skin produces sweat and oil.
The skin acts as a barrier.
The skin identifies and coordinates an immune response.
The skin produces mucus.
The skin causes the body to produce antibodies.
Answer:
the first and second sentence
Explanation:
Answer:
1 and 2
Explanation:
A polypeptide only becomes a functioning protein after it has folded into its exact 3D shape.
True
False
is 11/12 greater then 2/3 explain
Answer:
11/12 is greater than 2/3!
Which of the following is not true of mosses, liverworts, and hornworts?
Question 11 options:
They are non-vascular plants.
They have true roots, stems, and leaves.
They grow in moist places.
They are small and low-growin
Answer: do not have true roots, stems, leaves
Explanation: they are non-vascular and have no structures of a vascular plant
Answer:
they have not roots, stems, or leaves
Explanation:
hope i helped
Look at the following diagram of the carbon cycle.An image of carbon cycle is shown. The sun, a cloud, two trees, one on the left and the other on the right, an animal, lake, and a factory are shown in the image. An arrow is shown from the sun towards the left tree marked A. The sun is marked B. There is an arrow from the air above the clouds, marked C, towards the left tree. An arrow from a location close to the ground marked D points towards Dead Organisms, which is a label under the animal. An arrow marked E points from the right tree straight up to the clouds. An arrow marked F points from the animal straight up to the clouds. An arrow marked G points from the factory towards the air above the clouds, C. There is an arrow pointing from the air to the lake labeled Carbonates in Water, an arrow pointing down from dead organisms to Fossils and Fossil Fuels, and an arrow from Fossils to the factory.Which of the following facts is best represented by the arrow pointing from G to C? The chemical energy present in fossil fuels is used to create new forms of energy used for photosynthesis. Energy is conserved because the chemical energy present in fossil fuels is used up completely during burning. The mechanical energy produced on burning fossil fuels is transformed into chemical energy stored in carbon dioxide. Energy is conserved because the mechanical energy produced on burning fossil fuels is less than the chemical energy formed.
Answer:
wat is the proper question say pls
what is the difference between fern life cycle and moss life cycle??
Answer:
Both mosses and ferns undergo alterations of generations. ... The gametophyte is prominent is mosses, but the sporophyte is prominent in ferns. The sporophyte of ferns is differentiated into true leaves, stem, and roots. In contrast, mosses lack true leaves, stem or roots.
Explanation:
Why do all animals share the same kingdom ?
Answer:
They share the same kingdom because they are all identified by a one-word "animal" which makes them all fall under the same kingdom which in that one kingdom they are in diffrent groups like bird and mammal.
Explanation:
Which of the following statements best exemplifies the importance of mentoring? A mechanism to transmit values and standards of professional conduct. A narrowing of the circle of influence and learning. The primary way for senior researchers to recruit a trainee to complete projects for them. A mechanism to get additional grant support
Answer:
A mechanism to transmit ........ professional conduct
Explanation:
Hope it helps you
Tq
Mentoring is considered as a mechanism, which assists in transmitting the standards and values of professional conduct.
• A mentor is an individual who advise, support, and guide the person.
• Mentoring is a process or an act of guiding and helping another person to support their personal development.
• The main objective of mentoring is to assist one to grow as a person and become the best version of oneself.
• This helps one in attaining the personal or career goals, presenting one to novel ways of thinking, sharing valuable life lessons, challenging one limiting assumptions, and much more. In short, mentoring helps an individual to attain the values and standards of professional conduct.
Thus, mentoring helps one to attain the values and standards of professional conduct.
To know more about:
https://brainly.com/question/14006383
Where do lizards get their tail length
Explanation: long-tailed helps a lizard with balance. It provides a fat reserve for the lizard in times of starvation. A lizard uses its tail to communicate its feelings and its social status. Lizards detach their tails as a defense mechanism.
What is NOT a function of the nucleus?
Answer:
The nuclues cannot help modify proteins.
Explanation:
describe temperature in your own words
Answer:
it is a degree of intensity of heat in a subject or thing expressed usually by touch
Explanation:
The balance between the discharge and recharge for a groundwater supply is called the
A) restoration
B) cation exchange capacity
C) ecological footprint
D) water budget
E) Fujita scale
Answer:
Water budget? I thought Water Table would have been one of the answers because I’m taking the test right now
Explanation:
In hydrology, a water balance equation can be used to describe the flow of water in and out of a system. A system can be one of several hydrological domains, such as a column of soil or a drainage basin. Water balance can also refer to the ways in which an organism maintains water in dry or hot conditions.
Giving everything!!!!!!!!! Plzzzz help!!!!!!!!!!! ASAP!!
The diagram below shows parts of the human brain.
Which part of the brain is labeled 4 in the diagram?
A. medulla oblongata
B. occipital lobe
C. parietal lobe
D. brain stem
What are the differences between active transport and passive transport
True or False
When two male lions fight over a dead zebra, it is called interspecific competition
True or False
Decomposers are fungi that break down decaying plants and animals
True or False
Bears are known to eat berries as well as fish and meat. Bears are omnivores.
PLEASE HELP IMPORTANT SCIENCE PLEASE -
The diagram below shows a cell placed in a solution.
A cell is shown placed inside a beaker. It is labeled Cell. The solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.
Only water is allowed to move in and out of the cell. What will most likely happen to the cell?
A. It will expand as water moves out of it.
B. It will shrink as water moves out of it.
C. It will expand as water moves into it.
D.It will shrink as water moves into it.
Why is the surface of the organelle so twisty?
Answer: the winding structure of the ER results in a large membrane surface area that supports its function
Explanation:
When constructing an energy pyramid of the swamp ecosystem, which of these would be placed at the top of the pyramid?
Answer:
American alligator
Explanation:
If the Sun were replaced with a star with double its mass, how would that affect the force acting on the planets and their positions?
PLEASE HELP ME!!!!
Prompt: You are a carbon atom and you have just been exhaled out of a deer. Describe
the journey that you have been on or describe your new adventures. You should include
at least 10 things that you have learned in Unit 4 (cellular respiration, photosynthesis,
carbon cycle, etc).
Answer:
Cell--vein--heart--lungs--- environment.
Explanation:
The carbon which is produced by the cells in the form of carbondioxide goes with the blood through the vein which carries deoxygenated blood to the heart. After reaching the heart, the heart pumps this carbonated blood to the lungs through pulmonary artery and there this carbon is removed and releases outside the body and oxygen is loaded in the blood. The product of respiration are the reactants of photosynthesis whereas the products of photosynthesis are the reactants of respiration. Photosynthesis occurs in only plants whereas respiration occurs in all types of organism. Carbon cycle is a type of cycle in which carbon moves from atmosphere to biosphere, lithosphere and then again to the atmosphere.