Describe how an enzyme speeds up a chemical reaction within a cell. (written answer)
Answer:
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
Why is antibiotic resistance dangerous?
Answer:
Antibiotic resistance is one of the most urgent threats to the public’s health. Antibiotic resistant bacteria can cause illnesses that were once easily treatable with antibiotics to become untreatable, leading to dangerous infections. Antibiotic-resistant bacteria are often more difficult to kill and more expensive to treat.
Explanation:
why would a species go a long time without changing?
answer
nearly all of these species are known as “living fossils” because they have not evolved too far from their original forms.
If we were to find life somewhere out on another planet, perhaps ___________ might be its composition. A.
silica
B.
carbon
C.
oxygen
D.
hydrogen
Answer:
I think it's C. Oxygen, sorry if I'm not right
Describe four ways that protist get food?
Answer:
There are many plant-like protists, such as algae, that get their energy from sunlight through photosynthesis. Some of the fungus-like protists, such as the slime molds (Figure below), decompose decaying matter. The animal-like protists must "eat" or ingest food. Some animal-like protists use their "tails" to eat.
Explanation:
What is the probability that a heterozygous black guinea pig crossed with a white one will produce a white offspring?
what features do root hair cells, epithelial cells, and red blood cells have in common
All of these types of cells have a high surface area-to-volume ratio.
What is the function of RBCs?
Erythrocytes also referred to as red blood cells carry oxygen to your body's tissues. As oxygen is converted to energy, carbon dioxide is released by your tissues. Additionally, your red blood cells carry carbon dioxide to your lungs so you may exhale it.
The process of getting oxygen from your lungs to your body's tissues is carried out by red blood cells. Your tissues use oxygen to make energy and carbon dioxide to expel waste. The carbon dioxide waste is transported to your lungs by your red blood cells, where it is exhaled.
It takes roughly seven days for red blood cells to properly mature and are then released into the bloodstream from the soft bone tissue (bone marrow) of your body. A protein that enables red blood cells to transport oxygen from your lungs and transfer it to other tissues in your body gives them their vivid red color is called hemoglobin.
Therefore, all of these cells have a high surface area-to-volume ratio.
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What is the difference between environmental science and environmentalism?
Answer:Environmental science is the pursuit of knowledge about the workings of the environment and our interactions with it. Environmentalism is a social movement dedicated to protecting the natural world. Nature makes resources at similar speeds.
Explanation:
which planet is blue-green in colour?
Answer:
Uranus
Explanation:
The blue-green color results from the absorption of red light by methane gas in Uranus' deep, cold and remarkably clear atmosphere.
Give the Chemical name of four commercial fertilizers.
Answer:
urea(contains nitrogen),sodium nitrate,Ammonium Sulphate ,Muriate of Potash.
Explanation:
Which type of data is non-numerical?
A. statistical data
B. quantitative data
C. qualitative data
Answer:
qualitative data. ....
The figure shows two water molecules held together by a/an
bond. (arrow tip)
A. covalent
B.hydrogen
C.ionic
D.van der Waals
Answer:
b) Hydrogen
Explanation:
The figure shows the hydrogen bonding of two H2O molecules. The red atom is Oxygen which is δ−, and the white atom is Hydrogen which is δ+, this is determined by their electronegativity. H2O molecules can form hydrogen bonding when the Hydrogen atom bonds through hydrogen bonding to the oxygen atom and vice versa.
This type of bond is an intermolecular bond
why organisms need specialised cells and tissues in order to survive
Multicellular organisms require cells to perform various functions and collaborate to maintain a balance in the system known as homeostasis. As a result, specialized structures become specialized for specific functions.
What is cell specialization?Cell specialization, also recognized as cell differentiation, is the methodology by which formulaic cells transform into specific cells that perform specific functions within the body.
Cell specialization is especially important during embryonic development.
Cell specialization allows multicellular organisms to express fewer genes in individual cells, protecting genes from mutagen damage.
Cell specialization occurs primarily during embryonic development as a result of cell signaling of cytoplasmic determinants.
Adult stem cells become specialized to various types of stem cells primarily due to gene expression regulation.
Cells in multicellular organisms must perform a variety of functions and collaborate to maintain a balance in the system known as homeostasis. As a result, specialized structures evolve to perform specific functions.
Thus, the organisms need specialized cells and tissues in order to survive.
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Describe the function of chloroplasts.
Chloroplasts use light energy to make sugar from carbon dioxide and water.
O Chloroplasts break down sugar to make energy in the form of adenosine triphosphate, or ATP.
Chloroplasts use light energy to make sugar, carbon dioxide, and water.
Chloroplasts break down sugar to make energy in the form of carbon dioxide and water.
Answer:
chloroplasts use light energy to make sugars, water, and carbon dioxide.
Explanation:
What is the resulted molecule at the end of the DNA recolication?
Answer:
dna replication results in a new dna molecule
so that 2 copies of dna before cell division
Which groups contain both primary and secondary consumers?
Answer:
Group B
Explanation:
because it the primary consumers eat fruits and seeds and the secondary consumers eat insects
Which two body systems work closely together to make sure your body remains in a stable condition
The Circulatory system helps in providing impure blood to heart and taking pure blood to cells with hemoglobin.
The respiratory system handles the coming of oxygen to body and out of carbon dioxide from body
Hello,
Can someone re-word this well for 50 points?
"The lab allowed me to model and observe stream and river processes. Using a virtual model, I compared low and high velocity streams or rivers, low and high gradient streams or rivers, and low and high volume streams or rivers. I found that higher velocity streams or rivers can cause more erosion, as do higher gradient and higher volume streams or rivers. Not only did these factors move more small sediment, they also moved larger pieces of sediment."
Answer:
Explanation:
This lab here allowed me to model and notice the stream and river processes. I found that higher celerity streams or rivers can cause more abrasion, as do higher gradient and higher volume streams or rivers. Not only did these factors move more small sediment, they also moved bigger pieces of the sediment rock.
Do not look up!!
What is the planet closes to the sun??? Explain
Answer:
The planet closest to the sun is Mercury, at just 58 million km (36 million miles) or 0.39 Astronomical Unit (AU) out.
1. Which of the following scenarios would not prompt the cell to start dividing? A. a bone elongating during puberty B. tissue healing after an injury C. stretching of a cell to allow for more fat storage
Answer:
I think the answer is C
Explanation:
The scenario that would not prompt the cell to start dividing is the stretching of a cell to allow for more fat storage.
What do you mean by Cell division?Cell division may be defined as the process by which a parent cell divides into two or more daughter cells.
The stretching of a cell to allow for more fat storage is usually done by the process of cell growth, but not by the process of cell division.
Therefore, the scenario that would not prompt the cell to start dividing is the stretching of a cell to allow for more fat storage.
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A student observes a cell under a microscope. She sees a cell wall and a nucleus. What type of cell is she observing?
O eukaryotic animal cell
O eukaryotic plant cell
O prokaryotic cell
O bacterial cell
Answer:
eukaryotic plant cell
hope this helps
Only eukaryotic plant cells have a cell wall and a nucleus. Option 2 is correct.
Eukaryotic cells are cells that have a nucleus and other membrane-bound organelles. Prokaryotic cells do not have a nucleus or other membrane-bound organelles.
Plant cells are eukaryotic cells that have a cell wall. The cell wall is a rigid structure that surrounds the cell membrane. It provides support and protection for the cell. Animal cells do not have a cell wall.
The nucleus is the control center of the cell. It contains the DNA, which is the genetic material of the cell. The nucleus also contains proteins that control the activities of the cell.
So, if a student observes a cell under a microscope and sees a cell wall and a nucleus, she is observing a eukaryotic plant cell.
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Which of the following is NOT a correct description of cnidarian nervous tissues?
Answer:
Three tissue layers I think
Which statement isn't true?
Answer:
I'm pretty sure the answer is b. Cells can absorb food and oxygen
Section Review
1. Construct Make a table to record information about the four main organic
molecules that make life possible. The table column headings should be
"Molecule," "Description," and "How Used by Living Things."
The four major classes of biomolecules are carbohydrates, lipids, proteins and nucleic acids. These biomolecules are fundamental for the functioning of all biological systems.
Molecule: carbohydratesDescription: complex carbohydrates are polymers composed of many subunits called monosaccharides (i.e., simple carbohydrates) linked by glycosidic bonds.How Used by Living Things: structural and energy roles. Complex carbohydrates provide a more lasting energy source in the body than simple carbohydrates.Molecule: lipidsDescription: lipids are a broad category of biomolecules that may be composed of one or more fatty acid chains and a glycerol backbone. How Used by Living Things: lipids provide a source of long-term energy for cells, heat insulation, structural roles in the cell membrane (phospholipids and cholesterol, etc).Molecule: proteinsDescription: proteins are polymers composed of a linear chain of amino acids linked by peptide bonds.How Used by Living Things: proteins have structural (e.g., actin filaments) and enzymatic (e.g., catalase) functions.Molecule: nucleic acidsDescription: nucleic acids (DNA and RNA) are polymers consisting of long chains of nucleotides.How Used by Living Things: DNA contains the hereditary information which is required to synthesize any protein. RNA serves as a transition molecule that helps to regulate the type and amount of proteins in cells.Learn more in:
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If a bee is flying in a circle at a constant speed Is the bee acceleratiy
Answer:
If a bee is flying in a circle at a constant speed, is the bee accelerating? YES, the bee is accelerating. Because acceleration is the change in velocity per unit of time, and the bee is constantly changing direction, the bee is also constantly changing velocity and is therefore accelerating.
Explanation:
Hope it helps
Answer:
Yes it is accelerating
Explanation:
I don't know if you mean accelerating but yes (In mechanics, acceleration is the rate of change of the velocity of an object with respect to time.)
What term is used to describe the state at which a solute moves down its concentration gradient
through the plasma membrane and becomes evenly distributed in the cytosol?
Diffusion is used to describe the condition at which a solute moves down its concentration gradient through the plasma membrane and becomes uniformly distributed in the cytosol.
What is Diffusion?Diffusion is the type of net movement of particles from an area of higher concentration to an area of lower concentration. It is driven by the gradient in Gibbs free energy or chemical potential.
This occurs through the semi-permeable membrane like the plasma membrane. Diffusion of small molecules and macromolecules such as proteins in aqueous solutions plays an important role in microorganisms, plants and animals.
Few examples of Diffusion are:
Perfume is sprayed in one part of the room so that it can spread easily so that we can feel its smell everywhere. A drop of food coloring spread throughout the water in a glass, the whole glass will be colored.Thus, Diffusion is used to describe the condition at which a solute moves down its concentration gradient through the plasma membrane and becomes uniformly distributed in the cytosol.
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How many total carbon abms are there
in the reactants of cellular respiration?
How many total oxygen abms are there
in the reactants of cellular respiration?
How many total atoms of hydrogen are
there in the reactants of cellular
respiration?
How many total carbon atoms are there
in the products of cellular respiration?
How many total oxygen abms are there
in the products of cellular respiration?
How many total atoms of hydrogen are
there in the products of cellular
respiration?
Question 1): Photosynthesis and cellular respiration are often described in two ways: 1) they are chemically opposite; and 2) they have a relationship to each other. Explain what these two statements mean. Be sure to include the specific substances used and released by each process. Question 2) Your skin is constantly producing new cells through cell division. How does this happen? During interphase, how does a cell prepare for division? Describe cell division, including the processes of mitosis and cytokinesis. Be sure to describe the mitotic steps. Question 3) Mitosis and meiosis are similar processes, but they have some very important differences. Explain how mitosis and meiosis are alike and how they are different. Provide at least two similarities and three differences. ( Please Do Not Repost Someone Else's Answer that is on Brainly Or Any Other Websites) Will Mark Brainliest .
Explanation:
Mitosis produces two cells from one parent using one division event. But meiosis produces four new child cells with two divisions, each of which has half the genetic material of its parent. Mitosis takes place all over the body, while meiosis only takes place in the sex organs and produces sex cells.
when a plant sweats or emits water is called
Answer:
Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves is known as transpiration
Explanation:
transpiration
Hope this helped you- have a good day bro cya)
what occurs if resources within a population are limited
Answer:
Explanation:
As resources are depleted, population growth rate slows and eventually stops,This is known as logistic growth.