Answer: Molecule: Some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to cross its hydrophobic core. In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers.
Glucose:Glucose cannot move across a cell membrane via simple diffusion because it is simple large and is directly rejected by the hydrophobic tails. Instead it passes across via facilitated diffusion which involves molecules moving through the membrane by passing through channel proteins.
Starch: Starch does not pass through the synthetic selectively permeable membrane because starch molecules are too large to fit through the pores of the dialysis tubing. ... Diffusion results from the random motion of molecules. Diffusion moves substances from regions of higher concentration to regions of lower concentration.
Protein: Can all membrane proteins diffuse freely around the membrane? Many, but not all membrane proteins can diffuse laterally through the lipid bilayer. Some proteins cannot do this because of their attachment, either to other proteins or to the underlying cytoskeletal filaments.
Iodine: The Dialysis tubing provides a semi-permeable membrane. Only allowing smaller molecules to pass through it. Iodine molecules are small enough to pass freely through the membrane, however starch molecules are complex and too large to pass through the membrane. ... Thus iodine diffused into the tube with the starch.
Water: Water also diffuses away from areas of high free water concentration into areas of more solute concentration. ... Thus, only water can diffuse. This diffusion of water across a semi-permeable membrane is called osmosis.
Salt: In turns out when salts are exposed to water, they dissolve into charge atoms (called ions). These atoms are very tiny and mobile and can easily diffuse from the surface past the meat molecules, given enough time.
Hope this helps.... Stay safe and have a great day/night!!! :D
Help please I do not understand
Answer:
Atoms in reactants are equal to atoms in products. so it represents law of conservation of energy
PLS ANSWER I GIVE 15 POINTS
If the new growth is matter, where do you think that matter comes from? Restate this question and answer with 3-5 sentences.
Answer: The reframe question is Does new growth is caused by a matter, from where this matter comes from?
Explanation:
The growth can be defined as the increase in the physical size of a body form. The matter here are the number of cells which divide and differentiated at a faster rate. The cells developed into specialized cell types to perform specialized functions some cells are associated for growth. Thus, the matter for the growth comes from dividing and differentiated cells.
Which organelle controls when and what proteins are made? *
A chloroplasts
B nucleus
C ribosomes
D Golgi apparatus
Answer: B. Nucleus
Explanation:
Fill in the blank
Relate the law of conservation of mass to photosynthesis
The Law of Conservation of Mass holds true in photosynthesis
because the number of ______________
Answer:
moles of reactants is the same as the number of moles of products
Explanation:
Photosynthesis is the process whereby green plants manufacture their food in the presence of sunlight and water using energy from the sun. It is chemically symbolized as;
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
In the reaction above, the number of moles are balanced so as to comply with law of conservation of mass.
The law of conservation of mass states that "matter is neither created nor destroyed in the course of a chemical reaction but are simply transformed from one form to another".
True or False Water moves from an area of low water concentration to an area of high water concentration.
Answer:
False
Explanation:
It is true that water moves from an area of higher water concentration to an area of lower concentration.
Based on osmotic pressure, water always moves from an area of higher concentration to that of lower concentration.
Osmosis of water and liquids is made possible across a concentration gradient. Water is driven from one place to another via concentration gradient.Why do saturated fatty acids have straight structures, while unsaturated fatty acids have bent structures?
Answer:
Saturated fatty acids exhibit a linear structure while unsaturated fatty acids bend, or kink, due to double bonds within the chemical foundation.
Please mark for brainliest.
Answer:
Saturated fatty acids have a straight structure because "the bend" comes when there is a double bond on one of the bonds. This causes the fatty acids to have slight polarity and be bent.Explanation:
Chromosomes are made of tightly packed molecules
Answer:
true
Explanation:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
What process synthesizes mRNA from DNA?
Answer:
transcription
Explanation:
what is the mRNA copy of the DNA strand: TAC AAA GTT AGA GAG TAG ATC
Answer:
AUG UUU CAA UCU CUC AUC UAG
Explanation:
calculate the mass of 0.35 mole of copper (||) sulfate (CuSO4).
The mass of 0.35 mole of copper (||) sulfate (CuSO4) is found to be 55.86 g.
What is the mass of any substance?The mass of any substance may be defined as a measure of the amount of matter in that particular substance. It is usually measured in grams (g) or kilograms (kg). Mass measures the quantity of matter regardless of both its location in the universe and the gravitational force applied to it.
According to the question,
The mole of copper (||) sulfate (CuSO4) = 0.35 mole.
The molar mass of copper (||) sulfate (CuSO4) = 159.60.
∴ The mass of any substance is calculated by the given formula:
Molar mass × No. of moles.159.60 × 0.35 = 55.86 g.
Therefore, the mass of 0.35 mole of copper (||) sulfate (CuSO4) is found to be 55.86 g.
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#SPJ2
1. A mutation is made once in every nucleotide copied.
Answer: False
Explanation:
Answer:
false
Explanation:
Which of the following statements best explains how roots aggregate soil?
The hairs and tendrils of roots grasp the soil and bind the particles together.
The nutrients flow from roots into the ground to bind the particles together.
The roots attract water and help the soil bind the particles together.
The plants release acid through the root into the soil to bind the particles together.
Answer:
the hair and tendrils of roots grasp the soil and bind the particles together
Explanation:
just did it on edge :D
Answer:
the hair and tendrils of roots grasp the soil and bind the particles together
Explanation:
Scientists have developed genetically engineered plants that are pest-resistant. By adding genes to the plant's DNA, they become toxic to insects (but not to plants or animals). This means that these plants may not need to be sprayed with pesticides to ward off the insects.
Answer:
Genetically modified organisms (GMOs) have altered their genomes in different ways in order to be resistant to both biotic (e.g., insect pests) and abiotic (e.g., drought) stress conditions
Explanation:
A genetically modified organism (GMO) is any organism, i.e., plant, animal, bacterium, etc., whose DNA has been altered by genetic engineering. The GMO crops can exhibit resistance to insect pests in order to increase their agronomic yields (as well as resistance to other biotic and abiotic stresses). It is for that reason that GMO crops are widely used in many countries. A commercially available GMO crop is Bt corn, which is a genetically engineered maize that expresses proteins from the bacterium Bacillus thuringiensis (Bt), which are poisonous to several insect pest species.
The results of an experiment are considered to be reliable if the experiment: A. creates ideas for new experiments. B. can be repeated with the same results. C. obtains results that support the hypothesis. D. can be conducted with a very simple procedure.
Answer:
B
Explanation:
Can be repeated with the same results.
where would you find fungi where would it stay?
Answer:
Everywhere. Soil, air, lakes, rivers, seas
In plants, food and animals.
Clothing and the human body.
Explanation:
The transcription of the information in DNA involves the pairing of the nitrogen bases of DNA with RNA nucleotides to form a molecule of messenger RNA. Choose the RNA nitrogen bases that pair with the DNA nitrogen bases listed. Be sure to use the capital letters that represent the nitrogen bases. A pairs with . C pairs with G . T pairs with A .
Answer: ASAP The transcription of the information in DNA involves the pairing of the nitrogen bases of DNA with RNA nucleotides to form a molecule of messenger RNA.
Answer:
:)))))))
Explanation:
A=U
C=G
T=A
The main plants in a
ecosystem are trees.
desert
forest
grassland
water
Why must you avoid breathing or coughing on an agar plate?
Answer:
Explanation:
An agar plate is simply a Petri dish and it contains agar as a solid growth medium. It also contains nutrients for the culturing of microorganisms. Because of this reason, we must avoid breathing and coughing on these agar plates to avoid contaminating them. If they get contaminated we won't only see microorganism growth that we want to see for the experiment or test but also all the organisms from our body.
Please help will give brainist! (multiple choice question , one answer.)
Answer:
D i belive, if i'm worng, please don't be mean about it
Explanation:
This river is surrounded by both trees and farm fields. When snow melt and precipitation are high, this river can flood its banks and the water will run back into the
back into the: either he trees or farm land.... or the ground itself
Make a rap about evolution using these five things
population had variation
some variations are favorable
more offspring are produced than survive
the ones that survive have favorable trait
population will change over time
will give brainliest to best awnser
rap should be at least a minute long
Answer:
what is rap?
Explanation:
What role does cellular respiration play in the carbon cycle?
A. It removes CO2 from the atmosphere during glycolysis.
B. It removes CO2 from the atmosphere during the citric acid cycle.
C. It releases CO2 to the atmosphere during acetyl CoA formation.
D. It releases CO2 to the atmosphere during electron transport.
Answer:
c
Explanation:
Help
Which describes pressure during a volcanic eruption? Pressure increases as magma rises. Pressure traps dissolved gases in magma. Pressure increases until the volcano explodes. Pressure from rocks above causes new rocks to form.
Answer:
A
Explanation:
Answer:
A
Explanation:
What happens when a light wave hits a translucent object, in terms of energy?
1) some of the energy is transmitted, whilst the rest is absorbed and reflected
2) most of the energy is transmitted
3) all energy is reflected
4) all energy absorbed
Answer:
1) some of the energy is transmitted, whilst the rest is absorbed and reflected
Explanation:
"When light strikes translucent materials, only some of the light passes through them. The light does not pass directly through the materials. ... Opaque objects block light from traveling through them. Most of the light is either reflected by the object or absorbed and converted to thermal energy."
Answer:
d
Explanation:
how are living things catagorized
Answer:
living /non living
Explanation:
your welcome
Potential energy is
A. stored energy C. the difference between stored and moving energy
B. moving energy D. the sum of all energy in the system
What is the powerhouse that is responsible to pump the oxygenated blood throughout the entire body?
Answer:
heart
Explanation:
because the heart is the answer
A student wishes to test whether adding a substance
(called an anti-freeze) to water lowers the freezing point
of the water. Measuring which of these variables will help
her arrive at a conclusion?
A
Amount of water put into
the container B
Amount of anti-freeze
added to the water
C
Temperature at which the
mixture freezes D
Type of thermometer
used to make the
measurement
Answer:
C Temperature at which the mixture freezes
Explanation:
Measuring the temperature at which the mixture freezes provides a good way for the student to arrive at her conclusion.
The variable being tested for in this experiment is the freezing point of the water anti-freeze mixture. The dependent variable which is the freezing point is of prime concern. Amount of the antifreeze added is the independent variable. It is the cause of the phenomenon desired to be observed in the experiment.There are different kinds of measurements. Measuring which of these variables will help her arrive at a conclusion is Temperature at which the mixture freezes.
The act of Measuring the temperature at which the mixture freezes helps one to known or arrive at a conclusion. Note that the variable that is tested for in this experiment is the freezing point of the water anti-freeze mixture.The temperature at which a substance freezes is referred to as its freezing point. Freezing point is also known to be the physical property of matter.
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Please help serious inquiries only
Answer:
it matches with a specific antigen
Please select the word from the list that best fits the definition
Occurs when chlorophyll in a plant traps light energy and produces sugar
A) Respiration
B) Photosynthesis
this is on edge2020
Answer:
Explanation:
its b photosyntesis
Answer:
B
Explanation: