Answer:
Hypotheses are based on observations.
Hypotheses are formed from testable questions.
Hypotheses are tested with controlled experiments.
Which of these would be useful in determining the species diversity of a pond ecosystem?
Select one:
Classifying the types of ecosystems that surround the pond
Sampling areas of the wetland and identifying all the plant and animal species present
Performing a DNA analysis of all the reptiles found in the ecosystem
Counting the number of red wing blackbirds
Answer:
I'm pretty sure It's Sampling areas of the wetland and identifying all the plant and animal species present
Explanation:
when your brakes fail, you should___.
a. shift to a higher gear
b. shift to a lower gear
c. not change your gear
d. alternate your gears
Answer:
d. alternate your gears
Explanation:
If a person has Type A blood, he or she would have antibodies for what blood group>
Answer:
Only A antibodies
Explanation:
People with type A blood only have A antibodies. With type B blood, they only have B antibodies. If you have type O, however, you have both, and if you have AB you have none. Aww.
See the attached image.
Which problem would quickly occur in a plant when the xylem is not functioning properly?
A. The plant would wilt.
B. The plant would turn yellow.
C. The plant would stay very small.
D. The plant would not produce seeds.
Answer:
A. The plant would wilt.
Explanation:
In order to stay healthy and fresh, plants like every other living organism require certain substances. One of those substances is WATER, which the plant gets by absorption via the root hairs. The water circulates throughout the plant with the aid of a water-conducting vascular tissue called XYLEM. Without the xylem, water will not be transported throughout the plant.
The xylem tissue helps provide structural support to the plant as it helps the plant cell to be turgid. A non-functional xylem means the conduction of water is impossible, hence causing the plant cells to become flaccid and lose strength; a process called wiltering.
The map shows the allele frequency of sickled hemoglobin (HbS) and malaria endemicity in Africa.
Which statement best explains the relationship between HbS allele frequency and malaria endemicity in Africa?
When an area is malaria free, the HbS allele frequency is between 0 and 2.02.
When an area is holoendemic, the HbS allele frequency is between 0.52 and 4.04.
When an area is malaria free, the HbS allele frequency is between 12.64 and 18.18.
When an area is holoendemic, the HbS allele frequency is between 0 and 0.51.
Answer:
(A). When an area is malaria free, the HbS allele frequency is between 0 and 2.02.
Explanation:
Answer:
A
Explanation:
Module 2: List the two main functions of polysaccharide molecules in living organisms, and explain how their structures relate to these functions.
Explanation:
providing structural support, storing energy and sending cellular communication signals..
polysaccharide are an important class of biological polymers. their function in living organisms is usually structure or storage related.. starch (a polymer of glucose) is used as a storage polysaccharide in plants.
Do humans reproduce asexually or sexually?
How could this mRNA sequence support a triplet code? ACACACACACAC
When the triplet code ACACACACACAC is translated in such conditions, it will produce a polypeptide chain consisting of multiple copies of only one type of amino acid. I hope my answer has come to your help
Answer:
split it up.
Explanation:
ACAC ACAC ACAC
Match the type of rock with how it forms.
Igneous
?
Released in volcanic
eruptions
Metamorphic
Can form from erosion
?
Sedimentary
?
Form because of high heat
and pressure
The matching of type of rocks with respect to their formation is described as follows:
Igneous rock: released in volcanic eruptions. Metamorphic rock: formed because of high heat and pressure.Sedimentary rock: formed from weathering, erosion, deposition, compaction, and cementation. What is a Rock?A rock may be defined as the solid mineral material forming part of the surface of the earth and is deposited under the earth surface.
Therefore, the matching of types of rocks with respect to their formation is briefly mentioned above.
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what are cofactors to enzymes
Answer:
Some enzymes require the addition of another non-protein molecule to function as an enzyme. These are known as cofactors, and without these enzymes remain within the inactive.
Explanation:
^^
A student is measuring plant growth in an experiment. Using the same species of plant, he places one plant in the dark and one in artificial light. He
hypothesizes that, over time, the plant in the artificial light will grow larger than the plant in the dark. What is the dependent variable in this
experiment?
-Artificial light
-Plant growth over time
-Species of plant
-Time in light versus dark
Answer: Plant growth over time
Explanation:
i would say that because its very likely that the growth of the plant will change, the rest of them seem like a independent variable. Have a good day hope i helped.
how do animals survive in both water conditions
Answer:
they have adapted to the temperatur since water trafers water faster than air. (more info below)
Explanation:
animals also have adaptations to temperature control, as water transfers heat faster than air. At the end of the day, aquatic animals have a lot of adaptations for moving in the water, such as a streamlined design, flippers, and a swim bladder, which acts like a fish ballast.
hope this helped!
How are nerve cells adapted to carry electrical messages?
Answer:
"The axon, the long, thin part of the neurone along which the impulse passes, is covered in a fatty myelin sheath, which acts as an electrical insulator."
Explanation:
"The dendrites receive incoming nerve impulses from other neurons."
Which of the following is an intrusive igneous body?
O A. Stock
O B. Stope
O c. Magma Chamber
O D. Aphanite
Answer:
D. Aphanite
Explanation:
A.P.E.X
An invasive igneous body is aphanite. Thus, the correct option is D.
What are Aphanite rocks?
Aphanite's are igneous rocks that were formed by rapid cooling in a volcanic or hypabyssal setting and are so finely grained that their individual mineral crystals cannot be seen with the unaided eye.
Very fine-grained, crystalline fabrics called aphanitic minerals are created when a magma solidifies in reaction to an exceptionally rapid loss of heat and dissolved gases. They are characterized by grains that are too small to be recognized without a petrological microscope.
Large crystals are known to be present in certain specific igneous rocks. The crystals in this type of rock are approximately the same size. Compared to aphanitic rock, which is known to have rocks with finer grain sizes.
So, the correct option is D.
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A scientist has sequenced a gene from a multicellular eukaryotic organism. Brendan claims that by analyzing the gene sequence and applying
the genetic code, he can conclude the sequence of amino acids in the protein that forms after the gene is transcribed and translated
Which statement provides the strongest evidence against the validity of Brendan's claim?
A. Regulatory proteins may activate or deactivate a gene, often by very complex mechanisms.
B. During transcription, a strand of mRNA is synthesized from complementary base pairs, with the substitution of uracil (U) for thymine
(T)
C. During translation, anticodons on tRNA bind to codons on mRNA as part of the process that forms the polypeptide.
D. After a gene is transcribed, introns are removed from the pre-mRNA to form the mRNA that is translated.
Answer:
D. After a gene is transcribed, introns are removed from the pre-mRNA to form the mRNA that is translated.
Explanation:
According to this question, a gene was sequenced by scientists from an eukaryotic organism. Brendan claims he can conclude the resulting protein after the transcription and trans of the gene.
It is true that transcription and translation are the processes that a gene undergo in order to be expressed i.e. produce protein. However, a gene sequence contains both the coding and non-coding regions in it. The coding regions code for a protein and are called EXONS in the mRNA while the non-coding regions do not encode proteins and are called INTRONS in the mRNA.
These introns are removed from the mRNA molecule that results from the transcription of a gene. The mRNA undergoes a process called SPLICING, which removes the non-coding part of the mRNA (introns) and joins the coding parts (exons).
Hence, if this occurs, Brendan will not be able to accurately conclude the resulting protein from that gene sequence because a portion of that gene will still be removed during SPLICING of post-transcriptional processing.
4. If you are male, which member of your family should you look at to tell whether you are going to
go bald? Why? Use a punnett square to prove your answer.
Answer:
Your mother
Explanation:
If you are a male, the member of the family you should look at to tell whether you are going to go bald is your mother.
Baldness is a sex-linked recessive trait and as such, the two X chromosomes in females need to carry the allele in order for females to be phenotypically affected for the disorder. The males having only one X chromosomes however, means that they only need that single X chromosome to carry the baldness allele in order for them to be affected for baldness.
Assuming the allele for baldness in represented by b. Your mother is affected for baldness while your father is free from the disorder. This means that the genotype of your mum would be [tex]X^bX^b[/tex] while that of your dad would be [tex]X^BY[/tex]. According to law of inheritance, males usually inherit their X chromosomes from their mother. This means that any male your mother gives birth to would have the genotype [tex]X^bY[/tex] which phenotypically means that they will be affected for baldness.
The attached image shows the Punnet's square analysis of what will happen during inheritance.
which statement about enzymes is true an enzyme functions to increase the activation energy and reaction enzymes are proteins that function as catalyst in nonliving things each enzyme catalyze many different bio chemical reactions enzymes and substrates fit together like a lock and key
Answer:dirnk energy drinks
Explanation:i hate this
What will a hypothesis become if it is supported by repeated
experimentation?
A. A scientific theory
OB. A conclusion
C. A prediction
D. A control
Answer:
I would go with a conclusion because the study is repeated.
Explanation:
Fill in the blank!
The ocean is the____
ecosystem in the world.
A. Shortest
B. Smallest
C. Longest
D. Largest
Answer:
Largest
Explanation:
It is the largest biome in the world.
Answer: D
Explanation: It covers around 71% of the world.
Which of the following areas is located in the frontal lobe of the brain?
Broca's area
O hippocampus
thalamus
Wernicke's area
Answer:
Brocas area
Explanation:
Broca's area is located in the frontal lobe of the brain.
The brain region known as Broca's area is located in the left frontal lobe and is considered the nucleus that controls expressive language.
Thus, in both writing and speech, this portion of the central nervous system specializes in the production of a message with internal coherence and articulated through the language fractions.
In this area, specifically, there are capacities such as:
• Order the phonemes when making a word.
• The organization of words within a sentence.
• The semantic integration of the content to be expressed.
• Motor planning necessary for the expression of language.
Therefore, we can conclude that Broca's area located in the third gyrus in the frontal lobe is responsible for the articulation of language in any of its forms.
Learn more about Broca's area here: https://brainly.com/question/6716809
Besides riding a bike and using organic compost in your garden, describe another way you can help conserve our natural resources.
Answer:
5 minuite showers
Explanation:
Are people with hypertension more likely to get infected with the coronavirus than people who are healthy?
Yes or no?
What property of water allows it to move up through a plant?
A. Covalent bonding
B. Dehydration
C. Hydrogen bonding
O D. Hydrolysis
Answer:
C. Hydrogen bonding
Explanation:
It occurs when Hydrogen atome unequally share electrons
5. If there is a large number of prey rodents, the number of owls will increase due to a healthy
food source. More owls feeding on the rodents will cause their population to decrease, which in
turn will eventually cause the owls number to decrease. Would you expect to find this pattern in other ecosystems between predators and prey? Explain.
Answer:
Yes
Explanation:
One would expect to find the same pattern in any other ecosystems between predator and prey unless there is a way the prey's population is being replenished.
When predators start hunting down preys, the population of preys start decreasing and this will in turn means less food for the predators. If the trend continues, competition for food become fierce among the predators and this will make their population to start decreasing as the competitively strong ones take over the little food that remains and the competitively weak ones are gradually left to starve to death.
Organisms may contain up to five levels of organization within their bodies. Which level of organization is best represented by
the liver?
Answer:
ORGAN
Explanation:
The liver is a very important organ in the system of multicellular organisms e.g humans. It performs various functions in the body e.g. detoxification, metabolism etc. As rightly said in this question, multicellular organisms are made up of five levels of organization.
Firstly, all living organisms are made up of CELLS, which are the basic unit of life. Cells come together to form the TISSUE. Tissues that perform similar functions come together to form the ORGAN, the organ that specifically play a similar role in the body are collectively called ORGAN SYSTEM. The various organ systems make up the whole ORGANISM.
In this five level of organization, the liver falls under the ORGAN category because it is made up of cells called Hepatocytes, which come together to form tissues. The tissues collectively make up the LIVER.
Answer:
organ
Explanation:
An expiriment was done to determine if the rate at wich a patato cooked depended on the temperature of water in which it was boild. What are the independent and dependent variable??
Answer:
The independent variable is the potato and dependent variable will be the temperature
Explanation:
When this experiment is done it consider about the boiling rate of the temperature which it helps to cook the potato. in other words when you do this experiment you will try different temperature levels on the same type of vegetable which is a potato. so the variable called temperature will be dependent because its the variable that we change. and the variable called potato will be the independent.
need help ASAP:( What is the relationship among evolutionary mechanisms and genetic diversity?
pls thank you>_<
Answer:Evolution and diversity result from the interactions between organisms and their environments and the consequences of these interactions over long periods of time. Organisms continually adapt to their environments, and the diversity of environments that exists promotes a diversity of organisms adapted to them.
Explanation:
Why did Owens and Darwins have quarrels and stopped being friends
Answer:
Explanation:
probably because they misunderstood eachother
and they can't stand each other again
What kind of molecule is formed when many disaccharide molecules are combined?
A. Protein
B. Cellulose
C. Lipid
D. Monosaccharide
Answer: B. Cellulose
A combination of many disaccharides will yield a polysaccharaide, such as starch or cellulose
Which could be its function?
A. Directing the growth of cells
B. Insulating the body
C. Forming muscle fiber
D. Storing energy
Answer: Forming Muscle Fiber
Explanation: