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:
Which of these is purposefully changed during a scientific investigation? (4 points)
a
Test variable (independent variable)
b
Outcome variable (dependent variable)
c
Control group
d
Hypothesis
Answer:
The answer is A. Test variable (independent variable)! :)
Explanation:
Hope this helps; I took the test and got it correct!!
Don't forget to mark the this Brainliest if this helped! :)
Pathogens must be ____ to spread and not all infectious diseases are contagious or cause harm to every animal that hosts it.
In which state of matter does a mineral exist?
a) solid
b) liquid
c) gas
d) plasma
e) more than one of these
Answer:
its plasma
Explanation:
what was abc in duch
Answer:
ur butthole jasmine
Explanation:
Answer:
Dutch alphabet (Nederlands alfabet)
Dutch alphabet (Nederlands alfabet)Y is also known as Griekse ij, i-grec or ypsilon.
Shontal compared some of the properties of a marble to a piece
of wood. She placed a marble and a piece of wood in a bucket filled
with water. Shontal observed the wood floating on top of the water,
but the marble sank to the bottom of the bucket. Which statement
best explains why the marble and piece of wood acted differently in
the water?
A =The marble contains more mass than the piece of wood
B= The marble was less dense than the water
C=The piece of wood was less dense than the water
D= The piece of wood contained more mass than the marble
Question
Shontal compared some of the properties of a marble to a piece
of wood. She placed a marble and a piece of wood in a bucket filled
with water. Shontal observed the wood floating on top of the water,
but the marble sank to the bottom of the bucket. Which statement
best explains why the marble and piece of wood acted differently in
the water?
A =The marble contains more mass than the piece of wood
B= The marble was less dense than the water
C=The piece of wood was less dense than the water
D= The piece of wood contained more mass than the marble
depth & density answer im pretty sure is c
Nutrition is a broad field that involves the foods you consume, the nutrient content of those foods, and how those foods and their nutrients affect your health and wellness. Health effects can include how you feel on a daily basis, as well as your risk for certain diseases in the future.
Choose the option below that does not describe the science of nutrition.
A. Many studies have been conducted on the association between certain types of cancer and diet and, therefore, these links are well-understood.
B. Matters surrounding global food supply and food production are integral parts of the study of nutrition.
C. Nutrition science involves the study of the digestion and absorption of food.
D. Recent focus in nutrition science has shifted to the prevention of conditions like heart disease and diabetes
Answer:
A
Explanation:
The correct option that does not describe the science of nutrition would be that many studies have been conducted on the association between certain types of cancer and diet and, therefore, these links are well-understood.
While truly indeed many studies have been conducted linking certain types of cancer and diet, scientists are far from understanding the link between diets and cancer. While some degrees of understanding exists, it is not 100% certain that there is a cause-effect relationship between these two factors, and a large percentage of cases of cancer are caused by factors that cannot be controlled.
The correct option is, therefore, A.
how many chromosomes do birds have.
Answer:
80 Chromosomes
Explanation:
In general, bird karyotypes have a high diploid number (2n) of typically around 80 chromosomes that are divided into macro- and microchromosomes.
Fluid in the inner ear creates a sense of ____.
Answer:
Balance
Explanation:
The diagram shows an experiment on the digestion of the protein in egg albumen by protease.
The protease was taken from a human stomach.
In which test-tube will the protein be digested most quickly?
A
B
C
D
water-bath
at 37 °C
egg albumen
egg albumen
egg albumen
egg albumen
protease
dilute
hydrochloric
acid
dilute
hydrochloric
acid
dilute
hydrochloric
acid
protease
boiled protease
Answer:
C. containing
egg albumen protease dilute hydrochloric acidExplanation:
A protease is a kind of peptidase enzyme that breaks down proteins into peptide molecules. As a digestive enzyme it is located in the lining of the stomach where, relative to the hydrochloric acid in digestive juices, the pH is usually low/ acidic.
Enzymes speed up reaction rates by providing alternative pathways. By modifying the enzyme composition, supplying more collision energy, and changing the collisions between and the ratio of reactants, certain variables will increase the reaction rate.
Proteases function well at 37℃, the typical internal temperature of the human body- this temperature provides adequate energy for the reaction. Similarly, proteases require low pH for the correct configuration, and beyond this pH and temperature, they may become denatured or simply not function well as catalysts.
"
someone plz help I'll give brainliest
how would you describe the effect of a 1°c increase of temperature on the biodiversity of the habitat in terms of number of populations and number of individuals in te population? use evidence from your graph and table to support your answer
Answer: population of sponges and algae will decrease and population of staghorn coral and boulder star coral will increase.
Explanation: You can see how green and yellow line started to go down and red and purple went up
how do skin cells replace itself after an injury?
a) skin cells go through the process of budding to make new identical cells.
b) skin cells go through the procces of mitosis to make new identical cells.
c) skin cells go through the process og photosynthesis to make new identical cells.
d) skin cells go through the process of cellular respiration to make new identical cells.
Answer:
d
Explanation:
as a result of accumulation of waste products in the body , these substances are removed from the body via the skin hence they undergo cellular respiration
Answer:
b) skin cells go through the process of mitosis to make new identical cells.
Explanation:
The skin is the largest organ in the human body; it forms a protective barrier that keeps out external pathogens, and is integral to waste removal. When the organ is injured, damaged cells initiate an immune response, while healthy cells nearby begin to replicate.
This type of cell replication involves somatic cells and results in the diploid number of chromosomes called mitosis. Skin cells are somatic- they contain all 24 pairs of human chromosomes. During replication, the chromosomes are unwound, and copied- then, the newly copied chromosomes separate into two identical daughter cells with the same chromosome number.
What is meant by the word "concentration"'?
I will give brainliest. I will report you if you give me dumb answer
A mutagen is
A.) a living thing that has undergone a mutation.
B.) an agent that causes a mutation in DNA.
C.) a mutation that has affected one gene.
D.) any chemical that can poison living cells.
its b
A mutagen is a chemical or physical phenomenon, such as ionizing radiation, that promotes errors in DNA replication. Exposure to a mutagen can produce DNA mutations that cause or contribute to diseases such as cancer.
Explanation:
Explain the 3 types of symbiosis. Give examples of each and explain which organism is benefited, harmed or is neutral to the relationship.
Answer:
mutualism-commensalism-parasitism.
Explanation:
There are three different types of symbiotic relationships: mutualism, commensalism, and parasitism. Mutualism: both partners benefit. ... Commensalism: only one species benefits while the other is neither helped nor harmed.
Mutualism: both partners benefit. An example of mutualism is the relationship between the Egyptian plover and the crocodile. ...
Commensalism: only one species benefits while the other is neither helped nor harmed. ...
Parasitism: One organism (the parasite) gains, while the other (the host) suffers.
Benifited and harmed :-Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.
HOPE MY ANSWER IS HELPFUL
Extension Questions
12. Scientists may design an experiment with a control group, which is a set of organisms or sam-
ples that do not receive the treatment (the independent variable) that is being tested. Scientists
can then compare normal changes in organisms or samples with those that may have occurred
because of the treatment. The idea of a control group is not the same as a controlled variable.
Suppose a scientist is doing an experiment to determine the effect of an all-organic diet on the
occurrence of cancer in rats.
a. What variables should the scientist control in the experiment?
b. Describe the control group for this experiment.
Answer:
a) same species of rats
b) Some rats will not be given the all-organic diet
Explanation:
In an experiment, a control group is the group that do not receive the treatment (the independent variable) that is being tested while the control variables or constants are the variables that must be kept constant throughout the course of the experiment in order not to alter the experiment's outcome.
In this experiment where a scientist is trying to determine the effect of an all-organic diet on the occurrence of cancer in rats, the control group would be the GROUP OF RAT THAT DO NOT RECEIVE THE ORGANIC DIET. Also, a control variable would be the SAME SPECIES OF RAT USED throughout the experiment.
Meiosis produces which cell type?
haploid
diploid
chromosome
somatic
Answer:
it produces haploid cells
Explanation:
hope this help :D
After reading the paragraph below, answer the question that follows.Scientists interested in knowing the best way to restore an area after a temporary road was built through it completed a study comparing two treatments: (1) restoring the contour of an area so that there was no longer a depression or cut-through where the road was previously and (2) simply abandoning the area to allow vegetation to return on its own. They wanted to know whether either or both of these treatments would return the aboveground vegetation and the belowground soil properties to their original state, as seen in a similar area where there had never been a road.In this experiment, the area that had never had a road is useful to the experiment because:________________
Answer:
it acts as the control group in the experiment
Explanation:
The area that had never had a road is extremely useful because it acts as the control group in the experiment. The researchers can use this untouched area of land as a benchmark for the rest of the experiment. Once they implement both test scenarios on the pieces of road, they can then compare the results gathered from each study with the data gathered from the area that had never been a road in order to determine which option provides results that best compare to the original properties of the piece of area that has never been made into a road.
What is the final product of transcription
Please help me! 10 points
where did genetic engineering come from
Identical twins are genetically the same but do not always look or act exactly alike. Propose a hypothesis to explain this.
Answer:
It is because no two people should have the same DNA, even twins.
Answer:
Explanation:
The independent assortment of
how do the weight of objects on earth compare the weight of the objects on the moon why do you think this is
Answer:
Being that the moon has a gravitational force of 1.622m/s 2, we multiply the object's mass by this quantity to calculate an object's weight on the moon. So an object or person on the moon would weigh 16.5% its weight on earth. Therefore, a person would be much lighter on the moon. Conversely, a person is 83.5% heavier on earth than on the moon.
Explanation:
hope this helps you out love!! <3
Answer:
weight of objects on EARTH> weight of objects on MOON
Explanation:
weight= mass * gravity
assuming both objects have the same mass, the environment with greater gravity will result in a greater weight
gravity of earth > gravity on the moon
so
weight of objects on EARTH> weight of objects on MOON
(TRUE OR FALSE)
As discoveries were made that couldn't be explained by spontaneous generations, scientist came up with an updated version of the spontaneous generation model?
PLZ HELP WILL BRAINLIEST
IF U DONT KNOW THE ANSWER DONT U DARE
Answer: I'm pretty sure this is true
Explanation:
What is Xd and tbh
Pls tell em
Answer:
tbh means to be honest
XD 1. an expression used in text messages or e-mails signaling happiness or laughter. XD is an emoticon. X represents closed eyes while D stands for an open mouth. OMG! What you did today was so funny!!! XD.
Explanation:
Answer:
XD is a face like a laughing face the X is the 2 eyes crossing and the D is the mouth
Explanation:
eyes↓ ↓mouth
XD
Can y’all please help?
4. Which of the following statements correctly compares the function of nucleic
acids and proteins?
A. Proteins speed up chemical reactions; nucleic acids provide structural support.
B. Proteins store energy, nucleic acids provide energy
C. Proteins help build cell membranes; nucleic acids store energy
D. Proteins express genetic information; nucleic acids store genetic information
Answer:
B
Explanation:
Proteins do store energy and nucleic acids provide energy thats why B is correct.
What is unique about the
protein channels which allow molecules to travel by facilitated diffusion?
A. Each channel only allows one type of molecule to pass through it
B. The channel modify the molecules DNA as they pass-through
C. The channels move molecules very quickly
Please help!!!! 10 points
Answer:
A. Each channel only allows one type of molecule to pass through it
Explanation:
Transmembrane proteins from channels spanning the membrane that create hydrophilic tunnels. They only enable diffusion across the protein channel into the cell, for their target molecules.
These are highly specific-they only allow one type or group of related molecules to use the channel. These are types of transmembrane channels, embedded within the membrane, help to maintain selective permeability, while simple diffusion of other small, uncharged molecules can readily occur.
The deepest parts of the ocean have much different food chains than most shallow ocean or terrestrial ecosystems. Since there no plants in these areas, Chemoautotrophs usually functions as producers in these ecosystems. Chemoautotrophs are organisms that make their own food using the chemicals found around them. Which statement describes why chemoautotrophs are needed to fill this role in these environments?
A. Plants are unable to survive in salt water
B. Chemoautotrophs have eaten all the plants in the ecosystem
C. Sunlight cannot reach the ocean bottom so the plan are unable to grow
D. Without pollinators, it is impossible for plants to reproduce at greater ocean depths
Answer: C
Explanation: It is
Answer: C. sunlight cannot reach the ocean bottom so plants are unable to grow
Explanation: The deepest parts of the ocean dont contain plants because the sunlight wouldn’t be able to reach in order for plants to grow. this is why we see plants in the more shallow areas of the ocean.
Help plzzzz
Which of these is an interaction in which the host is harmed? (4 points)
a
Competition
b
Mutualism
c
Predation
d
Parasitism
Answer:
parasitism
Explanation:
parasitism: Interaction between two organisms, in which one organism (the parasite) benefits and the other (the host) is harmed.
2. How are the kelp and the chemosynthetic bacteria of the
hydrothermal vents similar?
A. Both use energy from the sun to make food.
B. Both are primary producers.
C. Both are scavengers.
D. Both use hydrogen sulfide as an energy source.
Answer:
C. Both are primary producers.(THIS IS THE CORRECT ANSWER)
Explanation:
Chemosynthesis is a biological conversion of carbon molecules. These are found around the hydrothermal vents.
It is due to the bacteria feeds on the hydrogen sulfide that is coming out from the vents that are required as an energy tonic for the bacteria to survive and kelp also has similar requirements. Kelps forests are shelters for these bacteria and hence both are found near the source of energy.Hence the option B both are primary producers.
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