Base your answers to the next question on the diagram below and on your knowledge of biology. The diagram represents a laboratory setup. A starch solution in a test tube was separated from the water in a beaker by a dialysis membrane. One hour later, it was observed that the liquid had risen in the test tube. The rise of the liquid in the test tube that was observed after one hour can be explained as a result of the *
Answers
Answer:
water moving from the beaker into the test tube
Explanation:
this was just on a quiz i had and it showed me the right answers after i finished
Osmosis can be used to explain the increase in fluid in the test tube that was observed after one hour.
Osmosis is the movement of water molecules through a semipermeable membrane from an area of low solute concentration to an area of high solute concentration. In this arrangement, the pure water in the beaker has a lower concentration of solute than the starch solution in the test tube.
Water molecules can pass through the dialysis membrane, but larger solute molecules such as starch cannot. Since the concentration of solute in the starch solution in the test tube is higher than in the water in the beaker, the water molecules move through the membrane to the beaker. This flow of water in the test tube increases the level of the liquid by increasing its volume. Therefore osmosis can be used to explain the rise of liquid in a test tube.
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Related Questions
Cells must divide in order to carry out
A. all life functions
B . deceased functions
C . respiratory functions
Answers
Answer:
A
cells are what make up every living organism
Which of the following variables have been shown to affect anaerobic respiration?
[Select ALL that apply]
solubility
pH
lactic acid concentration
availability of nutrients
oxygen levels
Answers
Answer:
When the body has plenty of oxygen, pyruvate is shuttled to an aerobic pathway to be further broken down for more energy. But when oxygen is limited, the body temporarily converts pyruvate into a substance called lactate, which allows glucose breakdown—and thus energy production—to continue.
Explanation:
hope it helps
_____________ is the process of cutting DNA into fragments and inserting the fragments with a desired ____________ into another organism of the same or different species.
Answers
Answer:
given below
Explanation:
Genetic engineering is the process of cutting DNA into fragments and inserting the fragments with a desired gene into another organism of the same or different species
Answer:
Genetic Engineering
trait
the next answer to the next question is.....
recombinant dna tehnology
Explanation:
edu 2021
Design an experiment to determine whether lactase persistence in the different global hot spots was caused by one or several mutations
Answers
Answer:
Collect DNA from individuals who are lactase persistent and are from the global hot spot populations. Then look for genetic differences correlated with lactase persistence; the first place to look would be in and around the lactase gene. Compare the genetic differences to see if they are the same or different.
Explanation:
4. Which of the following statements accurately describes a difference between
viruses and bacteria? *
A. Viruses are much smaller than bacteria cells.
B. Viruses have a higher metabolism than bacteria cells.
C. Viruses contain organelles while bacteria cells do not.
D. Viruses reproduce asexually while bacteria cells reproduce sexually.
e
Answers
Answer:
Explanation:
Nor do viruses have cells: they're very small, much smaller than the cells of living things,Bacteria are also much bigger than viruses. The virus or its genetic material enters the cell.
The statements accurately describes a difference between viruses and bacteria is viruses are much smaller than bacteria cells. Thus, option A is correct.
What is virus?A virus is a microscopic organism that serves as infectious agent and replicates only inside the living cells of an organism. Viruses infect all living organisms such as plants, animals, human beings including bacteria and other microscopic organism.
Virology is the branch of science which deals with the study of viruses. When virus infected a host cell rapid production can be observed and by multiplying rapidly thousands of original copy of viruses are produced.
When the virus enters into a infected cell or living cell, viruses exist in the form of independent particles known as virions. In open air viruses are non-living but when they entered into a living cell of an organism they become active and reproductive as well.
Therefore, The statements accurately describes a difference between viruses and bacteria is viruses are much smaller than bacteria cells. Thus, option A is correct.
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Please Help Me I Think I Have The Answer But I Just Need A Second Opinion...
Which of the following represents a dominant trait?
Select one:
a. a
b. A
c. d
d. b
Answers
Answer:
b. A
Explanation:
Answer:
b. A
Explanation:
This form of water pollution causes bacteria to multiply in the water rapidly causing people who come in contact with this water to become ill, many times with diarrhea.
Answers
Answer:
The correct answer is - water contamination.
Explanation:
Water contamination is a form of water pollution in which water is contaminated or polluted with several microorganisms and pathogens by industrial waste, sewage, animal waste.
It is contaminated when rainwater runoffs from agricultural farms, industrial and sewage dump that brings toxins, wastes, and fertilizers to the water body that help bacteria to multiply and infect the people who come in touch with it.
In the synthesis phase of the cell cycle, a body cell copies DNA. This DNA replication occurs in preparation for which of the following processes?
Answers
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA.
In the synthesis phase of the cell cycle, a body cell copies DNA. This DNA replication occurs in S phase of Interphase. The correct option is a.
What is interphase?
Interphase is a phase of cell growth, it happens between mitosis and meiosis. It is one of the phases of the cell cycle. The series of events that occur in a cell leading to its division and DNA duplication to form two daughter cells is known as the cell cycle or cell-division cycle.
The B, C, and D periods make up the cell cycle in bacteria, which do not have cell nuclei. There are four phases in the cell cycle.
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA.
Therefore, the correct option is a, Interphase.
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The question is incomplete. Your most probably complete question is given below:
Interphase.
Metaphase.
Anaphase
Telophase.
Describe the problem with diabetes and why it is important to the public?
Please help this is due today and I really need help.
Answers
Need ASAP
Which of the following puts a person at the greatest risk of contracting an STI? *
A. Giving first aid (CPR) to a person who has a cut on their lip and is bleeding from the cut.
B. Having sexual intercourse with only men while using a condom.
C. Getting a tattoo of a cool looking dragon on your arm with a clean needle.
D. Sharing a can of Pepsi with your sibling.
E. Walking down a dirty alley.
Answers
Answer:
A
Explanation:
How does the specific immune response to viruses related to diabetes?
Please help this is due today and I really need help.
Answers
Answer:Type 1 diabetes is an autoimmune disease, whereby the body's immune system reacts against its own cells, in this case the insulin producing cells in the pancreas, and begins to kill these cells. The causal factors of type 1 diabetes are not yet well understood.
Explanation:
Answer:
how much do you need written?
oop nvm someone else beat me to it
.Write at least two things that you know about cells.
Answers
Answer:
All living things are made up of cells. Red blood cells carry oxygen around the body.
Explanation:
How do you contribute to the mass of a tree?
Answers
The living animals contribute to the mass of the tree because they release the carbon dioxide that is used by the plants for photosynthesis and later used by the cells.
What is the role of photosynthesis?Photosynthesis is the process in which the plant takes the carbon dioxide from the atmosphere and, with the help of sunlight and water, makes glucose and oxygen, which are further used by the living organisms, and releases the carbon dioxide into the atmosphere. More is the carbon dioxide released into the atmosphere by the animals, more is the rate of photosynthesizing, and more is the biomass of the plants. but if the carbon dioxide increases and the number of plants reduces, then the photosynthesis rate also reduces.
Hence, the mass of the tree increases if more carbon dioxide is released from the animals, and that is further used by the plants for photosynthesis and cellular metabolism.
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The water cycle includes living
elements and non-living geological
processes. What type of cycle is the
water cycle?
A-Biogeochemical cycle
B-Inorganic Cycle
Answers
Answer: Hope it helpz
Explanation:
Some of the major biogeochemical cycles are as follows: (1) Water Cycle or Hydrologic Cycle (2) Carbon-Cycle (3) Nitrogen Cycle (4) Oxygen Cycle. The producers of an ecosystem take up several basic inorganic nutrients from their non-living environment. These materials get transformed into the bio mass of the producers.
What two processes keep water moving throughout a plant?
Answers
Answer:
Water potential and transpiration
Explanation:
Im sure its right but if its not im sorry ...
Answer:
phloem and xylem.
Explanation:
Water potential, evapotranspiration, and stomatal regulation influence how water and nutrients are transported in plants.
(50 POINTS ) Which of the following can be used to explain why water is able to dissolve many substances?
A. Water has strong cohesive properties.
B. Water has high heat capacity.
C. Water is a polar molecule.
D. Water has a neutral pH.
Answers
Answer:D. Water has a neutral pH.
Explanation:
Plz help will mark brainliest
Answers
Answer:
1 and 3 (b)
Explanation:
Answer:
I think the answer is 1 and 3, hopefully Im right!
Explanation:
How do enzymes help join two substrate molecules together to form a product?
Answers
Answer:
Enzymes bind with chemical reactants called substrates. ... In others, two substrates may come together to create one larger molecule. Two reactants might also enter a reaction, both become modified, and leave the reaction as two products. The enzyme's active site binds to the substrate.
Strawberry plants produce offspring through asexual reproduction. Which statement is true about strawberry plants?
Question 4 options:
They are identical to the single parent.
They have characteristics of both parents.
Answers
Strawberry plants can reproduce by blastogenesis reproduction as well as syngenesis, so both statements are true.
Option (A) and (B) both are true.
How strawberry plants reproduce?Strawberry plants can reproduce by blastogenesis reproduction by sending out runners that are called stolons. So the daughter plants will be identical to the single parent.
Strawberry plants also reproduce by syngenesis reproduction by producing gametes in flowers. In this case, the daughter plants would have characteristics of both parents.
Thus, option (A)They are identical to the single parent and option (B)They have characteristics of both parents, both are true.
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Which of the following animals will provide the best soil aeration?
1.wolf
2.earthworm
3.fox
4.grasshopper
Answers
Answer:
The correct answer is - option 2. earthworm.
Explanation:
Soil aeration is one of the major factors that help in the productivity of the soil, it is the phenomenon that exchanges the gases between the atmosphere and soil. Microbes and plants leads to change in the oxygen and carbon dioxide in the soil. Volume of the macropores, oxygen, CO2, redox potential helps in the determining the soil aeration.
Earthworms are the natural way of the help in the status of the soil aeration as they help in the increasing the volume of the macropores in the soil asnd help. They help in increasing soil porosity which increases the air and gases in the soil.
What are 3 characteristics of balanced forces?
Answers
Answer:
easy, hope this helps (/ O>O ) /
Explanation:
Hanging objects. The forces on this hanging crate are equal in size but act in opposite directions. ...
Floating in water. Objects float in water when their weight is balanced by the upthrust from the water. ...
Standing on the ground.
I am generally found both inside and outside of the nucleus [in eukaryotic cells].
Answers
What is the best distinction between birds and other animals?
A. Birds can fly.
B. Birds have amniotes eggs.
C. All birds eat seeds
Answers
Answer:
The correct answer is option A. birds can fly.
Explanation:
One characteristic that distinguish birds from all other animals is that birds have feathers. Birds are the only animals that have feathers, actually it is said that if an animal have feathers it must be a bird. Feathers serve many purposes for birds: they allow birds to fly, serve as insulators for their eggs and their young's, and also give them protectrom from water and cold temperatures.
Modeling Mitosis Activity
1. Whatisthediploidnumberofchromosomesinafruitfly?________________
2. Howmanyhomologouspairsofchromosomesdoesafruitflyhave?__________
3. Inthediagram(right),namethestepsthatarepartofmitosis. ____________________________________________________
4. Whichstepsarepartsoftherestofthecellcycle? ____________________________________________________
Modeling mitosis
a. Inlateinterphase(step2onyourboard),theamountofDNAdoubles.Thatmeanseachchromosome now doubles. Select a matching pipe cleaner (same length and color) for each chromosome and slide both through a piece of cereal. You now should have a set of eight doubled chromosomes arranged in homologous pairs.
b. Reviewthemitosisdiagraminyourtextbookandmovethechromosomesthroughtherestofthesteps on your board.
Applying your knowledge
Fill in Table 1 with the correct information.
Step
Number of cells
Number of chromosomes in each nucleus
Number of homologous pairs in each nucleus
Interphase Cytokinesis
Table 1: Cell cycle and mitosis in fruit flies
.. . 0.
11. What is the purpose of mitosis? (3 points) ____________________________________________________________ ____________________________________________________________
A diploid set of human chromosomes contains 23 homologous pairs (46 chromosomes). Fill in Table 2 with the correction information regarding human body cells.
Step
Number of cells
Number of chromosomes in
each nucleus
Number of homologous pairs in each nucleus
Interphase Cytokinesis
Table 2: Cell cycle and mitosis in humans
12. 13. 14. 15. 16. 17.
18. Why is it necessary to double the amount of genetic material before mitosis begins? (3 points) ___________________________________________________________ ___________________________________________________________ ___________________________________________________________
19. The two daughter cells end up with an exact copy of the genetic material from the parent cell. How does your simulation support this statement? (3 points)
Answers
13. Soil begins to form when lichens and weather break down volcanic rock into smaller pieces
during
A. pioneer species
B. primary succession
C. secondary succession
D. climax communities
Answers
Which type of electromagnetic radiation is the primary cause of sunburns?
Radio waves
Ultraviolet rays
Visible waves
Rays
Answers
Answer:
Ultraviolet rays
Explanation:
These waves cause sunburns it's true...
have a good day
The radiometric date of a metamorphic rock most likely represents when the rock was _____.
Answers
Answer:
"Heated during metamorphism" is the appropriate response.
Explanation:
Metamorphism, the mineralogical but rather architectural adaptation of rock formations to biochemical circumstances widely divergent from some of those whereby the rock formations were recently established. Improvements caused by atmospheric circumstances, including such compaction, have been considered separate.If a plant is identified as Alternanthera flava (L.) Mears, the word Alternanthera indicates which of the following?
O species
O genus
O domain
O phylum
Answers
Answer:
The answer is Genus
Explanation:
plant genus - a genus of plants. genus - (biology) taxonomic group containing one or more species. kingdom Plantae, plant kingdom, Plantae - (botany) the taxonomic kingdom comprising all living or extinct plants.
which statement best describes the population at point b?
Answers
Answer:
d.........................
The growth curves show the lag, log, stationary, and death phases. At a point, B is the graph the food and the space are in abundance. Thus, option D is correct.
What is a growth curve?A growth curve is the representation of the change in the number or the population of a species at a particular period. It shows the evolution over time and the effects of the various factors on growth.
Point B is in the logarithmic or exponential phase that characterizes the growth and increase in population. The growth is possible only if resources like food and space are abundant for the species.
Therefore, point B shows an abundance of food and space.
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Only 4 questions Please help
Answers
Answer:
1) natural selection
I can't answer the rest without more information