Answer:
A
Explanation:
it provides insight to what animals existed in the past, ecosystems and adaptations of currently existing species
PLEASE HELP!!!
what protein is part of the basal lamina outside blood vessels, and activates platelets when they stick to it?
-hemoglobin
-collagen
-fibrinogen
-tissue factor
What is the BEST description of the beginning of secondary succession?
(a)Soil is already present.
(b)It begins on rock formations.
(c)Plants are already present.
(d)Pioneer species appear.
Answer:
C,,, Plants are already present.
Explanation:
Answer:
Plants are already present.
Explanation:
2. Which part of a eukaryotic cell contains the instructions on how to recombine the molecules in nutrients into new molecules that the cell can use?
A. DNA in the nucleus
B. Chlorophyll in chloroplasts
C. Water in vacuoles
D. Digestive chemicals in lysosomes
Water flow improves in the aftermath of a forest fire because
rain always puts out fires.
no living organisms survive fires, decreasing demand.
they clear the land, allowing more water to flow over it.
much of the water in a local watershed will be used to fight the fire.
A major impact of combustion on water quality is the potential for increased precipitation. Runoff can carry suspended soil particles, dissolved inorganic nutrients, and other materials into nearby rivers and lakes, degrading water quality and damaging fish habitat.
Park Williams, an associate professor of geography at UCLA and lead author of the study, said wildfires burn vegetation that would otherwise draw water from the ground and block precipitation before it reaches the ground. said to improve the flow.
Wildfires increase the vulnerability of watersheds to flooding and erosion, causing short-term and long-term damage to water supplies. may have an impact. The increased cost of treatment, the need for alternative medicine, and reduced storage capacity. Fire as a destructive force can rapidly consume large amounts of biomass and cause adverse effects such as soil erosion, post-fire water runoff, and air pollution.
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Answer: The correct answer is they clear the land, allowing more water to flow over it.
Explanation: Confirmed correct.
Forest fires clear the underbrush and branches from the forest floor, improving the water flow and saturation.
Study the energy pyramid.
In this pyramid, what level is the frog?
Answer:
Tertiary consumers i think
Which of the following does the frog represent? A. Primary producer B. Primary consumer C. Secondary consumer D. Decomposer
Answer:
Primary Consumer
Explanation:
Because it eat directly from the plants, which are primary producers
What is true for an energy resource with a low net energy?
Answer:
An energy resource with a low or negative net energy can have a hard time competing in the marketplace with other energy alternatives that have medium to high net energy yields unless it receives financial support from the government (taxpayers) or other outside sources.
Explanation:
- Eijiro <3
what signals the end of the cell cycle
PLS HELP ASAP!!!! 60 points!
in complete sentences compare in depth each of the following:
Compare their functions
Compare their structures
Compare how they look when they are stained
Compare their counts
Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Which of the following mutations could lead to constitutive expression of the genes of the lac operon? A mutation in the lac-Z gene A mutation in the lac-Y gene A mutation in the operator sequence A super repressor mutation Submit Part B Which of the following best describes the biological role of the lac operon? View Available Hint(s) Which of the following best describes the biological role of the lac operon? It ensures that bacterial cells produce lactose only when no other food sources are available. It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment. It ensures that a cell produces enzymes involved in lactose metabolism in a constitutive manner. It prevents other sugars from being metabolized until all available lactose has been used. Submit Part C The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. View Available Hint(s) The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. True False
Options for part A are as follows:
A) A mutation in the operator sequence
B) A mutation in the lac-Z gene
C) A mutation in the lac-Y gene
D) A super repressor mutation
Answer:
The correct answer:
Part a - A mutation in the operator sequence
Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part C. true.
Explanation:
part a:
If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.
part b:
The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment
Part c:
RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.
PLZ HELLLP TONS OF POINTS (this is on a FINAL)
two students are comparing scientific experiments to investigations. They came up with the following ideas.
Student A: Testing plant growth in different types of soils
Student B: Comparing the water level in a lake during different times of the year
Which student gave an example of a scientific experiment?
Student A because it requires experimental and control groups
Student B because it requires a hypothesis
Student A because it is preferably done in natural settings
Student B because it is preferably done across a long period of time
Answer:A
Explanation:
A scientist helps a colleague do a better experiment by:
O A. refusing to consider an alternative interpretation of results.
B. suggesting that unrepeatable results are still reliable.
C. making up observations that are hard to obtain directly
D. sharing the cost of an expensive tool or instrument.
Answer:
I think C
Explanation:
it is good reason
The scientist that helped to colleague for doing a good experiment when the expensive tool or instrument should be shared.
What is an experiment?An experiment refer to the procedure where it should be carried out for supporting or refuting a hypothesis. It provides the cause and effect relationship by represent the result that arise at the time when the specific factor should be changed.
And, when the expensive tool cost should be shared so the more good experiment should be conducted.
hence, the option d is correct and the rest options should be incorrect.
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Which organism obtains energy without directly depending on another organism
The organism that obtains energy without directly depending on another organism is a PLANT.
PLANTS are organisms which are capable of manufacturing their own food through the process of photosynthesis.
Photosynthesis is defined as the process by which plants use low energy containing inorganic compounds (example carbondioxide and water) in the presence of sunlight, as energy, to produce high energy organic compounds such as sugar. These sugar are used as source of energy in the plant cells.
While animals are the organisms that directly depend on plants( another organism)
Therefore, the organism that obtains energy without directly depending on another organism is a PLANT.
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A scientist isolates a disease-causing particle. Which of the following properties would indicate that the particle is a virus and not a bacterium?
why is night blindness regarded as a non infectious disease
Answer:
Explanation:
stay away from the dark frfr sh1 creepy dog
which two places is aggregate generally found?
floodplains and alluvial fans
alluvial fans and mines
mines and beneath the topsoil
beneath the topsoil and above the topsoil
Answer: Floodplains and Alluvial Fans
Explanation: Took the quiz and got it right. Hope this helps!
Answer:person above is right
Explanation:
answer A
Match the statement with the correct term from the list.
Any ____________ is a blank that you are filling with a choice from the list. Choices may be used once, more than once or not at all.
1. Enzyme which transcribes DNA ______________
2. Location of transcription in a eukaryotic cell __________
3. Specific sub cellular structure completes translation _____________
4. Product of transcription ___________
5. Transportation of amino acids _____________
6. Product of translation ____________
7. Druing translation complimentary base pairing occurs between mRNA and ______________
8. Start codon for translation_________
Answer:
Explanation:
1.RIbonucliec acid (RNA) polymerase
2. Nucleus
3. Ribosome
4. Intermediate messanger RNA(mRNA)
5. tRNA(transfer RNA)
6. Amino acids
7. tRNA that specifies for each codon of amino acids read on the mRNA
8. 5'AUG Methionine
RNA polymerase is the enzyme that helps in transcribing DNA and it occur in the nucleus before it is being transferred to the ribosome where translation occurs. The end product of translation is amino acids who are functional protein.
Which of the following is undesirable when developing organic compost?
a)treated sawdust
b)decomposition
c)nematodes
d)kitchen detritus
Answer:
C.
Explanation:
nematodes are roundworms and are undesirable
If all of your cells have the same complete set of DNA why do different cells in different proteins
Why do we have different cells in our bodies if every cell has the same DNA?
The genome of a cell contains in its DNA sequence the information to make many thousands of different protein and RNA molecules. A cell typically expresses only a fraction of its genes, and the different types of cells in multicellular organisms arise because different sets of genes are expressed.
How would adding finer particles to the sand affect porosity?
Explanation:
Porosity depends on the size, shape, and mixture of grains and particles that compose soil and rock. For instance, small particles such as clays can compact more closely together, reducing the amount of porosity. However, larger particles such as sand and gravel will have more spaces available between them.
A segment of a DNA strand is shown
3’ AGGTCAGGT 5’
Which of these is the correct complementary DNA strand for the segments shown?
A)5’ AGGYCAGGT 3’
B)5’ ACCUGAGGU 3’
C)5’ TGGACTGGA 3’
D)5’ TCCACTCCA 3’
Answer:
5’ TCCAGTCCA 3’
Explanation:
The correct complementary DNA strand for segment 3’ AGGTCAGGT 5’ is 5’ TCCACTCCA 3’. Thus, the correct option for this question is D.
What is a Complementary DNA strand?A complementary DNA strand may be defined as a type of DNA strand in which the series of the constituent molecules on one strand of the double-stranded structure is chemically similar to the sequence on the other strand.
According to Chargaff's rule, the complementary DNA strand is formed with the concept of base pairing, where Adenine is complementary to Thymine and cytosine is complementary to Guanine.
Due to this, A=T, G=C, G=C, T=A, C=G, A=T, G=C, G=C, and T=A. This matches option four given in the question.
Therefore, the correct complementary DNA strand for segment 3’ AGGTCAGGT 5’ is 5’ TCCACTCCA 3’. Thus, the correct option for this question is D.
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Which of the flowing best describes how reduced space affects the animals in an environment?
a
They will have more food and water to share.
b
The population of the animals in that space will increase.
c
They will compete and fight for resources.
d
They will struggle to survive.
Answer:
d
Explanation:
they will not be able to survive with no food or water
p.s. i know the other person answered it but they did not explain it
Answer: Option (D) Is correct, They will struggle to survive.
Explanation: Hope it helps!
Good luck!
all of the following gases are naturally occurring in the atmosphere EXCEPT—
a) CO2
b) H2O
c) NO2
d) CFCs
Answer:
CFCs
Explanation:
because CO2,H20,NO2 are all naturally occurring and CFCs are man made
help pliz :3 I need your help and thank you <3
Answer:
need to answer all??tell
help pls for brainliest
Answer:
There are two people affected
Explanation:
The black shapes are affected people, the white ones are unaffected
During the formation of metamorphic rocks, what most likely causes pressure to increase?
Answer:
Magma pockets rise.
Explanation:
Answer:
It should be D, rocks beneath Earth's surface are forced toward the mantle.
Explanation:
edge2021
Match the statements on the left to the choices on the right.
Increase transcription of a gene. [ Choose ]
DNA binding protein [ Choose ]
Block the promoter region of a gene. [ Choose ]
Found associated with the gene encoding HCl production in a skin cell. [ Choose ]
Found associated with the genes encoding hemoglobin in a red blood cell [ Choose ]
Answer:
Increase transcription of a gene - Activator
DNA binding protein - Ribosome
Block the promoter region of a gene - Repressor
Found associated with the gene encoding HCI production in a skin cell - mRNA
Found associated with the genes encoding hemoglobin in a red blood cell - mRNA
Explanation:
Hemoglobin is an iron containing compound present in red blood cells which carries oxygen in the body. mRNA molecule contains exon coding for two proteins. mRNA molecule becomes associated with four to six ribosomes.
The statements on the left are correctly matched with the choices given on the right are:
Increase the transcription of a gene -------- Activator.DNA binding protein ------ Ribosome, Polymerases.Block the promoter region of a gene ------ Repressor. Found associated with the gene encoding HCl production in a skin cell -------- mRNAs.Found associated with the genes encoding hemoglobin in a red blood cell -------- mRNAs.What do you mean by a Gene?
A gene is a basic unit of heredity and a sequence of nucleotides in DNA that encodes the synthesis of a gene product, either RNA or protein.
An activator is known to increase the transcription of a gene, while a repressor binds to the promoter region and inhibits the transcription process. The molecules of mRNA get associated with the gene HBA, HBB which encodes for hemoglobin in red blood cells. Ribosomes and polymerases are known for DNA binding protein.
Therefore, above are all the statements on the left that are correctly matched with the choices given on the right.
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what type of membrane is the visking tubing
Answer: semi-permeable
Explanation: Dialysis tubing, also known as Visking tubing, is an artificial semi-permeable membrane tubing used in separation techniques, that facilitates the flow of tiny molecules in solution based on differential diffusion.
Answer: semi-permeable
Every cell in your body was produced through successive rounds of mitosis, starting from the zygote.
a. True
b. False
Answer:
I think that the correct answer is True
What are two types of animal waste?
Answer:
Throughout the following segment, the summary of the given question is summarized.
Explanation:
Animal wastes were most typically thought of as excretory products somewhat from living organisms.
The two types of waste are:
Biodegradable:The certain commodity that could be quickly decomposed by moisture or water, oxygen, sunlight, or microbes has been considered biodegradable waste.
Non-biodegradable:Material has always been characterized as such a substance that can't be disassociated via living phenomena as well as being a pollutant.