Answer:
I learned from recording information
always listen attentively never slack offmake sure to take notes accordinglyA sample of Carbon-14 originally contained 100 g. After three half-lives have
passed, how much Carbon-14 is left?
Answer:
After 3 half lives 12.5 g of C-14 left
Explanation:
Given data:
Mass of C-14 = 100 g
After 3 half lives mass left = ?
Solution:
At time zero = 100 g
At first half life = 100 g/2 = 50 g
At second half life = 50 g/ 2 = 25 g
At third half life = 25 g/2 = 12.5 g
Thus, after 3 half lives 12.5 g of C-14 left.
What difference do you see between ribose and deoxyribose sugars?
What is RNA ?
What is replication?
Answer:
ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information.
Explanatioim smart now give brainliest plz
Answer:
Ribose, found in RNA, is a "normal" sugar, with one oxygen atom attached to each carbon atom. Deoxyribose, found in DNA, is a modified sugar, lacking one oxygen atom (hence the name "deoxy"). In ribose, carbon atom #2 carries one hydroxyl group (colored red).
RNA is a ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information.DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule.Explanation:
A powerful windstorm moves through a densely populated white oak forest. The oaks in this forest have either smooth or rough bark. The storm randomly knocks down 50% of the white oak trees. The remaining oaks grow and produce seeds that germinate and fill in spaces in the forest. All of the new oaks have smooth bark. Which of these processes is described in this example?
Answer:
Secondary succession.
Explanation:
These processes is known as Secondary succession because disturbance occurs in the environment due to powerful windstorm which eliminates rough bark oak tree while no damaged happen to the smooth bark oak tree. So the next time the plants grow in the place of rough bark oak tree because rough bark oak tree can't withstand in that type of environmental condition and all population is available of smooth bark oak tree due to their survival mechanism.
11. The image below shows what happens when cold medicine tablets are placed in room-temperature
water. What evidence would indicate that a chemical change has occurred?
Water level rises
Bubbles produced
Tablets dissolve
Water becomes cloudy
a. The tablets dissolve in water
b. A gas develops
c. The water becomes cloudy
d. The water level increases slightly
2/7
Answer:
a.The tablets dissolve in water
Explanation:
I picked this as an answer because if you see the question it looks like it would be vinegar and they drop the tablets and then after the tablet dissolves.
Answer:
Bubbles Produced
Explanation:
This is the answer because when you see bubbles it indicates that there was a chemical reaction.
Which behaviors are stimulated without using the forebrain?
deep thinking
reflexes
ganglia
integration
Answer:
reflexes
Explanation:
Answer:
the answer is B reflexes
Explanation
I took the test and got 100 so it is right
the relationship between the structure of the cell membrane and how it applies to the characteristics of semipermeable transport.
Answer:
the primary function of the plasma membrane is to protect the cell form its surroundings. composed of a phospholipid bilayer with embeded with proteins the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
Explanation:
i’m very confused on this question so i rlly need help asap
Answer:
A tall, green plant with dominant alleles for both characteristics have a genotype TTGG and its phenotype is tall and green.
Explanation:
For a given trait, the dominant allele of the allelic pair is represented in capital letters (T and G), while the recessive allele is represented in small letters (t and g).
In the case of this plant, whose phenotype is tall and green —both dominant characteristics— and considered pure because both alleles are dominant, the genotype is TTGG.
In the case of a hybrid, the phenotype would be the same but the genotype would be TtGg. A recessive phenotype would be ttgg.Artificial selection has given us * A. The many species of wild cats B. Breeds of domesticated dogs C. Various human societies D. The many rainforest species
Answer:
b. breeds 0f domesticated dogs
Explanation:
I think its b.
Answer:
c. Breeds of domesticated dogs
During an experiment to determine if people with more symmetrical body features have a lower incidence of disease, a researcher first measures the length of several bones in the subject's hands and arms. The device used to measure length does not display a readout of the measurement taken. Instead, a wire connects the measuring device to a computer that records the data. The computer monitor is kept out of sight of the subject and the researcher. Why is such an elaborate device used?a. So that the subject will not know if he or she is part of the control group.b. So that the experiment will be repeatable.c. So that the subject will not be injured by the experiment.d. So that the identity of the subject will remain anonymous.e. So that the measurements are not biased by the researcher.
Answer:
e
Explanation:
The main reason such an elaborate device was used would be to eliminate any element of bias by the researcher.
It is important to eliminate biases when taking measurements so as to ensure the accuracy of the data and the overall outcome of the experiment. If a simpler device had been used in which the researcher manually records the length of the bones, it is possible to knowingly or unknowingly introduce biases or random error into the experiment which will impact the integrity of the data and the outcome of the experiment.
The correct option is e.
The movement of a solute in a cell from LOW concentration to HIGH concentration is called
Answer:
active transportation
Explanation:
Chloroplasts are double membrane organelles with a smooth outer membrane and an inner membrane that is folded into disc-shaped sacs called the thylakoid. Thylakoids contain chlorophyll and other pigments (red, orange, yellow, brown) and are found in stacks
called granum (grana, plural.)
This organelle is used to:
A. perform the process of cellular respiration.
B. expell O2.
C. create ATP.
D. covert solar energy into chemical energy.
Answer:
D. convert solar energy into chemical energy.
Explanation:
Chloroplasts are the organelles that carry out photosynthesis. They contain chlorophyll, which traps light energy from sunlight to power chemical reactions that produce glucose.
The solar energy is converted into chemical energy, which is used to synthesise glucose, along with carbon dioxide and water. The reactions produce glucose and release oxygen as a byproduct.
the number of consumer can never exceed the number of producer in nature why
Answer:
The number of consumer can never exceed the number of producer in nature because there is a limited amount of producer in the nature so the consumers is the one who eats a producer !
When the number of consumers increases, producers disappear due to overconsumption and consumers disappear due to lack of food and the ecosystem is destroyed. Therefore, in nature the number of consumers can never exceed the number of producers.
What are Producers and Consumers?Producers are plants that make their own food, the energy they need to grow, reproduce, and survive. They are making their own food which makes them special. These are the only living things on Earth that can make their own source of food energy with the help of sunlight, water and air.
Consumers make up the upper trophic level. Unlike producers, they cannot make their own food. They obtain their food by eating plants or other animals, while some eat both.
Scientists distinguish between several types of consumers. Primary consumers form the second trophic level.
Thus, when the number of consumers increases, producers disappear due to overconsumption and consumers disappear due to lack of food and the ecosystem is destroyed. Therefore, in nature the number of consumers can never exceed the number of producers.
Learn more about Producers, here:
https://brainly.com/question/9098847
#SPJ2
NEED ASAP WILL GIVE 40 POINTS!!!
What type of conditions might effect crossing over in Sordaria?
Answer:
To observe crossing over in Sordaria, one must make hybrids between wild-type and mutant strains of Sordaria. ... When mycelia of these two different strains come together and undergo meiosis and then mitosis, the asci that develop will contain four black ascospores and four tan ascospores.
Explanation:
What are the MAIN organs of the skeletal system?
A: Bones
B: Lungs
C: Heart
D: Muscles
Answer:
A.
Explanation:
The main organs of the skeletal system are bones, so A.
Answer: Bones and muscles
Explanation:
support and bind tissues and organs together. The skeleton serves as the main storage system for calcium and phosphorus.
. Polymers are made of individual subunits called ?
Answer:
monomers
Explanation:
i hope this helps
Answer:
Try Monomers?
Explanation:
I had biology last year lol. I remember something about this haha.
Which best explains why water boils in a pot sitting over fire?
Heat energy is created from the thermal energy in the air.
Heat energy is transferred from the water to the fire.
Thermal energy from the fire moves to the water in the form of heat.
Thermal energy from the surrounding air moves to the water.
Answer: Thermal energy from the fire moves to the water in the form of heat.
Because according to second law of thermodynamic, heat flows from higher to lower temperature region. Heat is the transfer of energy from an object at higher temperature to an object at a lower temperature. so energy flows from warmer to colder objects
________ cells are involved in fertilization.
a.
diploid
c.
triploid
b.
haploid
d.
all of the above
Answer:
all of the above but not sure
("High priority is given for the use of compost fertilizer
Answer:
i have used compost fertizilier
Explanation:
Groups Of similar organisms within a species are called
From smallest to largest, the levels are species, genus, family, order, class, phylum, and kingdom. Each of the ranking levels is called a taxon. Just as a genus is a group of similar species, a family is a group of similar genera. An order is a group of similar families.
Hope this helps!
What is the final product of transcription
what is an important step in the process of translation?
Answer: There are three major steps to translation: Initiation, Elongation, and Termination. The ribosome is made of two separate subunits: the small subunit and the large subunit. During initiation the small subunit attaches to the 5' end of mRNA. It then moves in the 5' → 3' direction.
true or false farming refers to the cultivation of crop
true because the devotion of farming is growing crops or in other words cultivation so it’s true
River deltas are?
1, caused by the movement of tectonic plates.
2, areas of infertile, rock soil.
3, formed by erosion.
4, created by seafloor spreading.
Answer:
2
Explanation:
I think that the answer is 2 because river deltas are formed when sediments are moved somewhere else in order to make the delta. So is there are areas of infertile rock soil it could be easily moved to make a delta
What are some of the ways that parasites have adapted to transmission between hosts and resisting the host’s attempts to get rid of the parasite? How do these particular developments help the parasite?
someone help plzz brainliest
how does increasing the size of the habitat affect carrying? explain your answer. recall the scenarios: 0-15 years, little land; 15-30 tears, moderate land;30-45 years, ample land
plzzz helpp
I meant years not tears
Answer:
so basically carrying capacity is "the amount of organisms a specific environment can support", so if the environment is increased, most likely, more space and food will be available, which means the environment can hold more organisms, causing the carrying capacity to increase
Explanation:
what I just said lol
Answer:
Increasing the habitat size will increase the carrying capacity. Carrying capacity is the maximum amount of organisms a habitat and its resources can carry. So if the habitat expands and more resources become available, the population would expand. As you can see for the first 15 years, when it was the little land, there was only about () rabbits, but as the land grew throughout the years, the rabbit population grew. 15-30 years with moderate land had around () rabbits, and the ample land in years 30-45 had around () rabbits, a little over two times the amount the little land had.
Explanation:
just fill in the ()s with the numbers that show on the graph. This is kinda late but hopefully it'll help anyone who needs it.
Both mitosis and meiosis begin with a diploid cell that contains replicated chromosomes. What are the main differences between these two processes, and what types of daughter cells produced by each? Meiosis has four cell divisions and results in four haploid daughter cells with genetic variation, while mitosis has two cell divisions and results in two identical daughter cells. Meiosis has two cell divisions and results in four haploid daughter cells with genetic variation, while mitosis has one cell division and results in two identical daughter cells. Mitosis occurs in gametes to increase genetic variation in daughter cells, while meiosis occurs in body cells for growth and repair. Mitosis produces genetic variation in daughter cells and increases the number of chromosomes, while meiosis occurs in body cells for growth and repair.
Answer:
Meiosis has two cell divisions and results in four haploid daughter cells with genetic variation, while mitosis has one cell division and results in two identical daughter cells.
The main differences would be that Meiosis has 4 cell divisions and Mitosis had 2 cell divisions. Meiosis results in 4 haploid daughter cells and Mitosis results in 2 identical daughter cells.
Another big difference between the two could be that Meiosis produces genetic variation in the daughter cells and increases the number of chromosomes whilst Meiosis occurs in body cells for growth and repair. Each process has a different job.
Give an example of active transport. Explain what occurs during this process, including the type of substances that is being transported, the concentration gradient, and any structures in the cell membrane or within the cell that are used.
what is reproduction
Answer:
1st definition the process of duplicating something.
2nd definition The process by which an organism produces its offspring is called reproduction.
Answer:
To make a copy or to duplicate something
Explanation:
Hope this helps!
JM0206
aka old account
Jade0206
would someone be incorrect if they said that all the apples in the entire world are organic?
Answer:
yes cuase some apples selling in the market is prone to pestisides
In a chemical change the atoms in compounds are rearranged to make new and different compounds.
True
False
PLEASE HELP ASAP
Answer:
its true
Explanation:
A chemical change alters the composition of the original matter. Different elements or compounds are present at the end of the chemical change. The atoms in compounds are rearranged to make new and different compounds.