2.A cell in a hypotonic solution
Answers
Answer:
the cell will swell
Explanation:
the cell will swell as the concentration of solute is more in the cell than its solvent thus water will move inside the cell leading the cell to swell.
Related Questions
Grade 8 ( Geology )
1. Choose The Correct Answer:
i) Caves are formed by:
a. solution
b. oxidation
c. carbonation
d. hydration
Answers
help asap
Which one of the following statements about organelles in eukaryotic cells is correct?
Responses
All the organelles have the same function
Organelles perform specific functions in eukaryotic cells
Plant and animal cells share exactly all the same organelles
There are only three types of organelles in eukaryotic cells
Answers
Answer: Although each organelle performs a specific function in the cell, all of the cell's organelles work together in an integrated fashion to meet the overall needs of the cell.
Explanation:
which type of microbe requires cellular machinery of a host cell for reproduction?
Answers
Answer:
I think its virsuses
Explanation:
A driver needs to make a delivery to an office that is 30 km away. The driver has traveled for 45 minutes west down a straight road at 50 km/h.
a. Has the driver traveled far enough to reach the office?
Answers
Answer:
Yes
Explanation:
The speed of the driver = 50 km/h
Time spent = 45 minutes = 0.75 h
From the definition of speed;
Speed = distance/time
Hence,
Distance = speed x time
Distance covered by driver in 45 minutes = 50 x 0.75 = 37.5 km
Distance needed to be covered = 30 km.
Therefore, the driver has traveled far enough to reach the office.
The driver has travelled far enough to reach the office i.e. True
Given data :
The speed of the driver = 50 km/h
Distance from office = 30 km
Time travelled by driver = 0.75 h
Determine the distance travelled so far by the driver
Speed = Distance / time
∴ Distance = Speed * time
= 50 * 0.75 = 37.5 km
Given that the distance travelled by the driver ( 37.5 km ) is greater than the distance from the office ( 30 km ) the driver has travelled far enough to reach the office.
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Select the sequence of RNA that the DNA strand below would encode.
DNA template: 3'-TACGACC-5'
5'-UACGACC-3'
3'-AUGCUGG-5'
5'-AUGCUGG-3'
5'-ATGCTGG-3'
Answers
The RNA sequence that the DNA strand 3'-TACGACC-5' would encode is 5'-AUGCGUC-3'.Explanation:The given DNA template strand is 3'-TACGACC-5'.The RNA transcription process occurs on this DNA template strand and forms the RNA transcript that carries the genetic information from DNA to ribosomes.
During transcription, DNA strands are unwound and separated. RNA polymerase binds to a promoter region on DNA and starts making the RNA strand that is complementary to the DNA strand. RNA synthesis occurs in the 5' to 3' direction.In DNA, thymine is present but in RNA uracil is present instead of thymine. Hence the corresponding RNA sequence is 5'-UACGACC-3'.RNA polymerase builds RNA strands by aligning complementary RNA nucleotides to the template DNA strand.
The RNA sequence that the DNA strand 3'-TACGACC-5' would encode is 5'-AUGCGUC-3'. This sequence is formed by using the RNA complementary base pairing rules to the DNA sequence as mentioned below.DNA strand: 3'-TACGACC-5'RNA strand: 5'-AUGCGUC-3'The sequence of RNA that the DNA strand 3'-TACGACC-5' would encode is 5'-AUGCGUC-3'. Hence, option (c) is the correct answer.
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How is a phylogenetic tree similar to a dichotomous key.
Answers
Answer: Phylogenetic trees are similar to the dichotomous keys because they used for identification and are artificial.
Answer:
Both focus on illustrating taxonomic relationships between organisms.
Explanation:
this is the correct answer
horizontal gene transfer is more prevalent in single-celled organisms than in multicellular organisms
Answers
Horizontal gene transfer is more common in single-celled organisms than in multicellular organisms.
Horizontal gene transfer refers to the transfer of genetic material between organisms that are not direct offspring. In single-celled organisms, such as bacteria and archaea, horizontal gene transfer is prevalent due to their close physical interactions and sharing of genetic material through processes like conjugation, transformation, and transduction.
Single-celled organisms often live in dense communities, allowing for easy exchange of genetic material. In contrast, multicellular organisms have more complex reproductive processes and cellular differentiation, limiting the opportunities for horizontal gene transfer.
While horizontal gene transfer can occur in multicellular organisms, it is generally less frequent and plays a lesser role in their evolution compared to single-celled organisms.
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thymine (found in dna) is identical to uracil (found in rna), except that there is no ch3 group on the pyrimidine ring of uracil. what feature is most different between the chemical structures of uracil and thymine?
Answers
The most significant difference between the chemical structures of uracil and thymine is the presence or absence of a methyl (CH₃) group on the pyrimidine ring of thymine.
Uracil and thymine are both pyrimidine bases that are nearly identical in structure, with the main difference being that thymine has a methyl group attached to the carbon atom at position 5 of the pyrimidine ring, while uracil lacks this methyl group.
This difference in structure is important because it affects the hydrogen bonding patterns between base pairs in DNA and RNA. Thymine base pairs with adenine in DNA, while uracil base pairs with adenine in RNA. The presence or absence of the methyl group helps to distinguish DNA from RNA and plays a key role in the specificity of base pairing between nucleic acids.
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what do u mean by this chromosones contain information of inheritance of character from parent to next genration in the form of dna
Answers
Answer:
Explanation:
DNA are the building blocks of chromosome. Think about a blueprint. Blueprint contain instructions of how to build something, the actual instructions are the drawing and those drawings are housed on the blue paper.
So if you connect that analogy to this, DNA is actually the code that tells your cell how to do, what to do and such, they are actual genetic codes with bases such as Adenine, Guanine, Cytosine, and Thymine arranged in a double helix pattern. The chromosomes are the structures that are a result of arrangement of billions and billions DNA bases, thus they are the structures that house DNA and gene (part of DNA that codes for stuff)
To measure the vast distance in space ,scientists use a unit called a ______, which is how far travels in one year.
The closest star to Earth is ______.
(Look at the picture)
Answers
Answer:
light-year; the sun
Explanation:
A light-year is the distance light travels in one year. This means that a light-year is a measure of distance, and is useful on a larger scale because of its large size (light travels a pretty big distance in a year!), so light-years are used by scientists to measure the vast distance in space.
The closest star to the Earth is the Sun.
Gravity is the natural phenomenon in which all objects with mass are attracted to (or gravitate towards) one another. Since gravity is neither a measure of distance nor a star, it doesn't fit any of the answer blanks.
Light is the portion of the spectrum of electromagnetic radiation that is visible to the human eye (between infrared and ultraviolet wavelengths). Since light is neither a measure of distance nor a star, it doesn't fit any of the answer blanks.
A megameter is an instrument for determining longitude by observation of the stars. Since a megameter is neither a measure of distance nor a star, it doesn't fit any of the answer blanks.
Betelguese is a star that is part of the Orion, notable because of its brightness and size, as well as the fact that it is likely to become a supernova in less than a million years. While Betelguese is a star, it isn't the closest star to the Earth. Therefore, it doesn't fit any of the answer blanks.
Hope this helps! :)
in the reproductive cloning of an animal the genome of the cloned individual comes from
Answers
Suppose that a plant disease kills all the fruit. The change could become a on the birds?
Answers
GIVING BRAINLIEST TO FIRST PERSON TO ANSWER!
IM BEING TIMED SO PLEASE MAKE IT GOOD BUT FAST :)
You have already learned about the formation of metamorphic, sedimentary, and igneous rocks. Use what you know to construct an explanation about how you think melted rock deep within Earth could change over time and one day look like the image on this page.
Answers
The solid Earth (the mantle and crust) is made of rock. You may have noticed that there are many kinds of rocks, from the soft sandy rocks that form the cliffs at Scripps beach to the hard rocks that form the mountains to the East of San Diego. Geologists have developed a way of classifying the various rocks and understand fairly well where they come from and where they go. There are three general types of rocks, those that form from melt (igneous rocks), those that are deposited from air or water (sedimentary rocks), and those that have formed by "cooking" or otherwise altering another rock (metamorphic rocks). Sedimentary rocks form by breaking down other kinds of rocks into small particles and washing or blowing them away; metamorphic rocks form from other rocks and igneous rocks form by melting other rocks. Thus rocks are always changing form and are as part of a giant cycle of renewal. This cycle is called the Rock Cycle.
In galaxies with lots of nebula, those nebula collapse to form new star groups. The stars in those groups are both low and high mass, which means there are red, orange, yellow, white, and blue stars all formed in the group at the same time. However, blue and white stars are much brighter than red and orange stars D | Question 6 1 pts If you were looking at the color of stars in a galaxy, would a group of new stars look bluish or reddish? Bluish O Reddish D Question 7 1 pts t you see blue areas in a galaxy, what does that indicate? D Question 7 1 pts If you see blue areas in a galaxy, what does that indicate? O There are lots of nebula collapsing to form new stars O Very few new stars forming D Question 8 1 pts Can an area where lots of nebula are collapsing to form new stars ever look red? ○Yes O No So why might some galaxies be mostly yellow? Answer these questions to figure it out
Answers
If a galaxy is mostly yellow, it could be because it has already gone through a period of intense star formation where many nebulae collapsed to form new star groups.
During this process, many blue and white stars were formed which shone brightly and heated up the surrounding gas, causing it to emit light in various colors including yellow. Over time, these bright and hot stars will exhaust their fuel and eventually die out, leaving behind mostly low mass and cooler stars such as red and orange stars. As a result, the galaxy will appear mostly yellow due to the presence of these cooler stars. However, it is important to note that there may still be areas within the galaxy where new stars are forming and these areas may appear bluish due to the presence of hot and bright blue and white stars. So, even though a galaxy may appear mostly yellow, it does not necessarily mean that new stars are not forming in some parts of the galaxy.
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When rats had their ________ removed, they no longer experienced their fear memory.
Answers
When rats had their Amygdala removed, they no longer experienced their fear memory.
The greater often a memory is recalled, the stronger its neural community will become. over the years, and through consistent keeping in mind, the reminiscence turns into encoded in both the hippocampus and the cortex. finally, it exists independently within the cortex, in which it is positioned away for lengthy-time period storage.
The amygdala is a common notion to form the core of a neural system for processing anxious and dangerous stimuli (four), consisting of the detection of risk and activation of suitable fear-associated behaviors in reaction to threatening or risky stimuli.
The amygdala helps coordinate responses to matters to your surroundings, specifically people who trigger an emotional reaction. This shape plays a critical position in fear and anger.
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what is the kilocalorie (kcal) value of a meal supplying 100 g of carbohydrate, 25 g of protein, and 10 g of fat?
Answers
The kilocalorie (kcal) value of the meal supplying 100 g of carbohydrate, 25 g of protein, and 10 g of fat is 590 kcal.
To calculate the kilocalorie (kcal) value of a meal, you need to know the energy content of each macronutrient. Here are the energy values per gram for each macronutrient:
- Carbohydrate: 4 kcal/g
- Protein: 4 kcal/g
- Fat: 9 kcal/g
To find the total energy content of the meal, you can multiply the grams of each macronutrient by their respective energy values and then sum them up. Let's calculate it:
Energy from carbohydrates = 100 g * 4 kcal/g = 400 kcal
Energy from protein = 25 g * 4 kcal/g = 100 kcal
Energy from fat = 10 g * 9 kcal/g = 90 kcal
Total energy content of the meal = Energy from carbohydrates + Energy from protein + Energy from fat
= 400 kcal + 100 kcal + 90 kcal
= 590 kcal
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What are 2 ways nitrogen becomes useable to plants,humans,and animals?
Answers
Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use.
Which of these is an example of a population in a desert ecosystem?
A. a saguaro cactus
B. the amount of rainfall
C. a fennec fox and its young
D. hawks and the lizards they feed on
Answers
Answer:A. a saguaro cactus
Explanation:
Its in the desert
Answer:
D
Explanation:
hawks and the lizards they feed on
The concept of parsimony holds that, given the data available, phylogenetic trees should represent the fewest evolutionary changes possible. True False
Answers
True. The concept of parsimony is a fundamental principle in constructing phylogenetic trees, which depict the evolutionary relationships between different species or groups of organisms.
Parsimony is based on the idea that the simplest explanation is usually the best, and in the context of phylogenetics, this means that the most likely tree is the one that requires the fewest evolutionary changes (or character state transitions) to explain the observed data. In other words, the tree that minimizes the number of homoplastic or convergent traits is considered the most parsimonious. The use of parsimony as a criterion for building phylogenetic trees has been widely accepted in evolutionary biology and has been supported by both theoretical and empirical evidence.
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this type of asexual propagation uses very small portions of a plant and placed them on nutrient enriched agar media in sealed containers. this type of asexual propagation uses very small portions of a plant and placed them on nutrient enriched agar media in sealed containers. division. cutting. grafting. separation. micropropagation
Answers
Propagation using very small plant parts and placing them on nutrient-enriched agar media in closed containers is asexual propagation of the type of micropropagation.
What is micropropagation?
Micropropagation is a plant propagation activity using tissue culture techniques. The initial planting material used for micropropagation is micrometers in size for explant cultures and smaller than one millimeter for meristem cultures. The aim of micropropagation is to mass-produce plants that have identical genetic material and uniform physiology with normal development and are free of pathogens. In addition, micropropagation aims to produce plants that can go through the process of acclimatization in a short time at a low cost.
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The section labeled A in the diagram is most likely a
Answers
bones are moved by _____ muscles. these muscles are attached to bones by ________ and they work in ______ pairs. hen one muscles in pair _______ the other _______ and bones are _______ in a particular direction. muscles cell contain many ______ which release energy for movements.
fill in the blanks plz.
these are the word that want to come to those blanks
involuntary , relaxes , mitochondria , contracts , antagonistic , pushed , ligaments , pulled , ribosomes , muscles , tendons , voluntary.
Answers
Answer:
voluntary
tendons
antagonistic
contacts
relaxes
pushed
mitochondria
hope it helps
the words are in order starting from the top to the last one
About 9000 years ago, two parents were surprised to discover their teenage daughters' ability to drink milk and not get sick like everyone else
Answers
Answer:
But around 8,000 years ago in what's now Turkey — just when humans were starting to milk newly domesticated cows, goats and sheep — mutations near the gene that produces the lactase enzyme started becoming more frequent. And around the same time, adult lactose
Explanation:
people started to build lactose tolerance
What is the chemical signal that diffuses across the synapse from a sending neuron to a receiving neuron called?
Answers
Answer:
A neurotransmitter
Common types of NT:
AcetylcholineDopamineGamma-aminobutyric acid (GABA)GlutamateHistamine NorepinephrineSerotoninThis is a genetic question:
The Bionomial is a more complex calculation used when you have multiple events AND multiple outcomes. Use the following P (s of A, t of B) = ( N! ) ps qt
S! T!
BTW= s + t = n and p+q = 1
Answers
The formula for the binomial distribution is:
P(s of A, t of B) = (N! / (S! * T!)) * (p^s) * (q^t)Where:
N is the total number of trialsS is the number of successes in the trialsT is the number of failures in the trialsp is the probability of success in each trialq is the probability of failure in each trialThe binomial distribution is a useful tool for calculating the probability of a specific number of successes in a set of trials. It is commonly used in fields such as genetics, where it can be used to calculate the probability of a specific genetic outcome occurring in a population.
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explain what is meant by epigenetic inheritance and give an example of epigenetic changes discussed in the text or in class
Answers
The transmission of specific epigenetic markings to offspring is referred to as epigenetic inheritance.
Generally speaking, epigenetics refers to changes in a cell's gene expression profile that are not brought on by modifications to the DNA sequence. In some circumstances, the paternal contribution is the primary source of epigenetic inheritance. It is crucial to demonstrate that the inherited phenotype requires passing through the gametes when considering transgenerational epigenetic inheritance (i.e., sperm and eggs). The fact that stressed-out moms generate stressed-out offspring is an instructive illustration.
Only the fourth generation can be deemed "event-free" and unblemished since a pregnant woman's exposure to a given environmental factor may even directly damage the germ cells of the kids. Only his sperm can be altered by an event that causes an epigenetic alteration in the father, resulting in dependable nongenetic inheritance in the third generation.
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Use the word bank below to fill in the blanks in the next question. Be careful, spelling counts! histone modification genomic conflict genetic maternal effect genomic imprinting environmental maternal effect DNA methylation induced pluripotent stem cells embryonic stem cells
usually inactivates genes, while We discussed two different types of epigenetic marks for "tags") in lecture. can activate or inactivate genes The hypothesis suggests that there are opposing evolutionary pressures on alleles of maternal versus paternal origin with respect to genes that affect early embryonic and fetal growth. Ideally, the cloning of whole organisms flike pets) should involve because these have very few or no epigenetic markers silencing specific genes. are usually used instead because they are easier to obtain, but they retain epigenetic tags that make cloning less successful The phenomenon in which a gene's expression is determined by its parental origin is called
Answers
DNA methylation usually inactivates genes, while histone modification can activate or inactivate genes. Genomic imprinting is the phenomenon in which a gene's expression is determined by its parental origin. Embryonic stem cells are usually used instead of induced pluripotent stem cells in cloning due to the retention of epigenetic tags that make cloning less successful.
DNA methylation plays a role in gene inactivation by adding methyl groups to DNA, while histone modification can activate or inactivate genes by modifying the histone proteins associated with DNA. Genomic imprinting refers to the phenomenon where gene expression is influenced by the parent of origin. In cloning, embryonic stem cells are preferred over induced pluripotent stem cells due to the retention of epigenetic tags that affect gene expression and may impact the success of cloning.
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Imagine a species of coral reef fish that is threatened by both overfishing and pollution. Design an observational study (or possibly a pair of studies) that you could use to understand the relative importance of these two threats. Be sure to specify whether you would use a control-impact, BACI, or regression approach. Describe how your study would deal with any potentially confounding variables.
Answers
In this ecological coral reef study, we used a control impact approach, BACI.
What kind of threats do coral reefs face?Unfortunately, coral reefs suffer from a number of threats, ranging from
Overfishing to coastal developmentAgricultural runoff and Shipping.Furthermore, climate change further exacerbates these local threats.
A species of coral reef fish that is threatened by both overfishing and pollution. the observational study that we can use to understand the relative importance of these two threats would be observation over a certain period of time. this study would deal with any potentially confounding variables using reference articles.
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Muscle tissue has several important properties, such as electrical excitability. another property of muscle tissue is that it is able to contract or extend, yet return to its original size and shape. which property of muscle tissue is this
Answers
Muscle tissue has several important properties, such as electrical excitability. Another property of muscle tissue is that it is capable of contracting or elongating, but returns to its original size and shape.
the property of muscle tissue is elasticity.
Muscle tissue is composed of long cells capable of contracting when stimulated by nerve impulses. The long cells in muscle tissue are called muscle fibers. Muscle fibers are large numbers of microfilaments made of the contractile proteins actin and myosin.
Muscle cells are able to contract without damaging tissue to a certain extent because they contain contractile proteins called myofibrils. Muscle tissue has four main properties, one of which is elasticity, namely the ability to return to its original shape after being stretched.
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The results of Thomas Hunt Morgan’s last cross are shown in the Punnett square below.
Which of Thomas Hunt Morgan's hypotheses was valid based on these results?
White eyes are lethal in female Drosophila.
White eyes are lethal in male Drosophila.
Female Drosophila with white eyes are homozygous recessive.
White eyes are the dominant trait in female Drosophila.
Answers
Thomas Hunt Morgan's hypotheses was valid based on these results of White eyes are lethal in male Drosophila.
Morgan's Hypotheses- The gene that determines eye color is located on the X chromosome, Morgan theorized that the first generation of flies in his breeding experiment comprised solely males with white eyes. Due of the white eye trait's location on their lone X chromosome, males exhibited it.
On the other hand, genes on the same chromosome that were more apart from one another were more likely to be split apart during recombination. As a result, Morgan was right when he suggested that the distance between two genes on a chromosome determines how strong a linkage between them is.
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Answer:B
Explanation: