Answer:
Mutation is a source of genetic variation
Answer:
Mutations
Explanation:
Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms. Finally, genetic variation can be a result of sexual reproduction, which leads to the creation of new combinations of genes.
what substances are the reactants in photosynthesis
Answer:
The reactants of photosynthesis are everything to the left of the "———>" arrow, thus the reactants of photosynthesis are carbon dioxide, water, and sunlight energy.
The products of photosynthesis are everything to the right of the "———>" arrow, thus the products of photosynthesis are glucose and oxygen.
Need help ASAP with this answer
Answer:
C.
Explanation:
Animals found in the tundra include the musk ox, the Arctic hare, the polar bear, the Arctic fox, the caribou, and the snowy owl. Many animals that live in the tundra, like the caribou and the semipalmated plover, migrate to warmer climates during the winter.
I hopes it's help :)
what three things are produced during the light reaction
how do monosaccharides combine to form polysaccharides
Why are enzymes important in digestion?
A. They allow reactions to occur rapidly and at
body temperature.
B. They change inorganic compounds into organic
ones.
C. They let reactions repeat without energy.
D. They control photosynthetic processes.
Answer:
A. They allow reactions to occur rapidly and at
body temperature.
I hope this helps you
please help me i need a long answer on this its biology
Answer:
Pituitary. The pituitary gland is located below the brain. Usually no larger than a pea, the gland controls many functions of the other endocrine glands.
what are some non-renewable sources of energy?
~ Thanks!
Answer:
coal, petroleum
Explanation:
they are obtained as dead organic substances fall into swamps and after a long period of time they decay into substances that can be used as fuel after refining process.
Answer:
Non-renewable energy is energy from fossil fuels such as coal, crude oil, natural gas, and uranium.
Explanation:
the energy required to lift an object is supplied by atp derived from the breakdown of molecules of
ATP is derived from the breakdown of molecules of glucose. Glycolysis is
the metabolic reaction which converts glucose into ATP.
The energy in glucose has to be converted to a usable form by the cells
which is why it is always converted to ATP( Adenosine triphosphate). The
energy supplied by ATP is then used to perform various activities in the
body.
Glucose is a type of carbohydrate which is a means of energy in organisms.
The explanations given validates ATP has been derived from the
breakdown of molecules of glucose.
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Answer:
glucose
Explanation:
I got it correct on test
Which of the following strategies would likely be part of a system of integrated pest management in a restaurant kitchen?
Sealing cracks in walls and placing screens over windows
Scattering small quantities of poison along exterior of restaurant
Trapping pests in mechanical devices and releasing them far from the restaurant
A) I and II only
B) I and III only
C) I, II, and III
What is the average beak depth of the current finch population?
Gene regulation is the basis for cellular differentiation and morphogenesis.
True
Or
False
Answer:
True
Explanation:
Can someone please help me with this asap it would mean a lot
Answer:
Explanation:
minerals cannot be gas or liquids. last one “They can be liquid, solid, or gas. “
HURRY 50 POINTS
Define trawling, and explain the ecological damage associated with it.
DO NOT COPY AND PACE PLZ
Answer:If we are talking the word it means, fishing with a trawl net or seine, or, sifting through as part of speech. if it isnt the word then i dont know:(
Explanation:
what do you waste the most of and how could you repurpose it into something that is beneficial?
Answer:I dont know
Explanation:
You see, the explanation of me not knowing is that my brain cells have died over the years and i do not know what to do with my life:)
Page 7e) Mrs. karki deposited a sum of money 7aa in a bank at the rate of 5 90 per year Simple interest. T. She received an interest of Rs 4,740 at the end of years how 6 did she deposit in the bank? much money
The principal money Mrs Karki deposited in the bank was
= Rs 1339
Simple interest (Si) received = Rs 4,740
Time (t)= 6 years
Rate (r)= 59%
Therefore the principal amount (p) =
[tex]p = \frac{si \times 100}{r \times t} [/tex]
where,
[tex]p = \frac{4740 \times 100}{59 \times 6} [/tex]
[tex]p = \frac{474000}{354} [/tex]
[tex]p = 1339[/tex]
Therefore, the principal money Mrs Karki deposited in the bank was = Rs 1339
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The principal money Mrs Karki deposited in the bank was
= Rs 1339
Simple interest (Si) received = Rs 4,740
Time (t)= 6 years
Rate (r)= 59%
Therefore the principal amount (p) =
[tex]p = \frac{si \times 100}{r \times t} [/tex]
where,
[tex]p = \frac{4740 \times 100}{59 \times 6} [/tex]
[tex]p = \frac{474000}{354} [/tex]
[tex]p = 1339[/tex]
Therefore, the principal money Mrs Karki deposited in the bank was = Rs 1339
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Which energy technology is more sustainable long term?
Answer:
Wind power
Harnessing power from the wind is one of the cleanest and most sustainable ways to generate electricity as it produces no toxic pollution or global warming emissions. Wind is also abundant, inexhaustible, and affordable, which makes it a viable and large-scale alternative to fossil fuels.
Explanation:
I hope it's help :)
Answer:
Wind power
Explanation:
getting power from the wind is one of the cleanest and most sustainable ways to generate electricity.
DNA and RNA are ______ that serve as templates that form proteins
Answer:
In the first step, the information in DNA is
transferred to a messenger RNA (mRNA)
molecule by way of a process called
transcription.... The mRNA sequence is
thus used as a template to assemble-in
order-the chain of amino acids that form a
protein.
A type of RNA that is called as ribonucleic acid type called as transfer RNA that is used for the production of the amino acid at a time and the protein assembly takes place at the ribosomes.
What is the role of DNA and RNA for the sake of protein synthesis ?
DNA are responsible for the providing out the code for the cell's activities and the RNA are responsible for providing out the service to make them proteins.
Each group of 3 bases in the mRNA constitutes a codon and each codon is specifying a particular type of amino acid. The mRNA sequence therefore used as a template to make the assembly in order of the chain of amino acids which form a protein.
It is found that in all biological cells , usually occurs in cytoplasm of cell though its production takes place in nucleus. Whereas DNA is providing the code for cell's activities and RNA is responsible for converting that code into proteins which carry various cellular functions.
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A scientist carried out an experiment to follow the movement of carbon atoms within animal cells. To do this, the scientist added glucose with radioactively labeled carbon atoms to a culture of cells growing in a Petri dish.
After a certain amount of time had passed, the scientist tested parts of cells for radioactivity. Radioactivity was detected in various biomolecules, including DNA.
Which of the following statements best explains why radioactivity was detected in the DNA?
Choose 1 answer:
(Choice A)
The DNA was in close proximity to the radioactive glucose during its formation.
(Choice B)
Carbon atoms that were once in the radioactively labeled glucose were used to form DNA.
(Choice C)
The DNA was made up of radioactively labeled glucose subunits.
Carbon atoms that were once in the radioactively labeled glucose were used to form DNA - this statement best explains why radioactivity was detected in the DNA.
What is radioactivity in DNA?Radioactivity is known to induce tumors, chromosome lesions, and minisatellite length mutations.
Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions.
The radiation could damage the cell’s DNA, but the DNA repairs itself. The radiation could prevent the DNA from replicating correctly. The radiation could damage the DNA so badly that the cell dies.
The correct answer is option B.
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Answer:
the answer is b - carbon atoms that were once in the radioactively labeled glucose were used to form DNA
hope this helps! <3
5
Which three organ systems are directly interacting when a person's brain sends a signal to the person's arm, causing the arm to
move up and down?
OA. muscular system, nervous system, skeletal system
ОВ.
nervous system, urinary system, skeletal system
OC. circulatory system, muscular system, respiratory system
OD. circulatory system, muscular system, skeletal system
Reset
Submit
4 of 10 Answered
Session Timer: 0:29
Session Score: 50% (2/4)
Answer:
A bc it moves the bones in the arm and the muscles and the nerves are what send the signals to the muscles to move
69. Plants transform energy from the sun
into
A nuclear energy
B chemical energy.
C visible light.
D steam.
Answer:
B. chemical energy
Explanation:
A peacock spreading its tail to attract a mate is sending a(n) _____ stimulus. learned innate external internal
Answer:
External
Explanation:
The Tail is spreading outside of the peacock (Externally)
Geologists determine the
geological history of an area by
examining rock layers in geologic
columns. The diagram shows
three geologic columns from the
same region that have not been
overturned.
A.
Place an arrow at each rock
layer boundary to represent a
missing layer of rock in each
of the three columns.
Next part in pic
The sample columns have two missing layers as follows:
Column 1: Layers 3 and 8 are missing. Column 2: Layers 1 and 7 are missing. Column 3: Layers 1 and 5 are missing. What is geology?Geology is a term to refer to the specialized science that focuses on the study of the composition and internal and external structure of the surface of the planet Earth, and the processes by which it has evolved throughout geological time.
In the image 3 columns are shown showing various layers of the Earth, however, each of it has 2 missing layers. To know which layers were missing from each one, we must analyze them to establish what a column with complete layers would look like and then compare the 3 samples with the model to know which layers are missing.
According to the previous process, it can be inferred that the missing layers in each column are:
Column 1: Layers 3 and 8 are missing. Column 2: Layers 1 and 7 are missing. Column 3: Layers 1 and 5 are missing.Note: This question is incomplete because the graph is missing. Here is the graph.
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explain how the information in this diagram indicates that an oxygen atom could bond covalently to two hydrogen atoms to form water
Answer:
because when oxygen atom bonds with two hydrogen atoms they form water
Explanation:
A water molecule is formed by covalent bonds between an oxygen atom and two hydrogen atoms. The bond between hydrogen and oxygen involves unequal sharing of electron – it is a polar covalent bond. This is because the nucleus of the oxygen atom is more attractive to electrons than the nuclei of the hydrogen atom.
What do you call a substance with a pH of 6?
Answer:
i copied this i just hope it helps if not i dont know
Explanation:
pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. ... Water with a pH of five is ten times more acidic than water having a pH of six. As this diagram shows, pH ranges from 0 to 14, with 7 being neutral. pHs less than 7 are acidic while pHs greater than 7 are alkaline
all the offspring of a cross between a black-eyed mendelien and an orange-eyed mendelien have black eyes. what is the expected phenotypic ratio of a cross between two orange-eyed mendeliens?
Answer:
100% orange-eyed mendeliens
Explanation: rr and rr produce rr, rr,rr,rr
PLEASE IN DESPERATE NEED OF HELP!
Cell Division Virtual Lab Activity
Instructions: The Virtual Cell Division Lab is on the lesson assessment page. On the image, it says “Click Anywhere to Start.” Follow the instructions as you move through the lab. The lab activity will keep count of your data on the right, and you can record this into the data table.
Title: Cell cycle
Objective(s):
Hypothesis:
Variables:
Data:
Record the number of cells you observed in the lab activity.
Stages
Number of Cells
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Observations:
Record any observations about the cells you observed. What does the cell look like for each stage? What is a distinguishing visible feature of each stage of the cell cycle?
Stages
Description of Cell
Interphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Data Analysis:
Part 1: Calculate the percentage of the cell cycle spent in each stage. Number of cells in given stage ÷ total number of cells counted × 100 = % of the cell cycle spent in this stage
Part 2: Using your percentages in part 1, create a graph that represents the time spent in each stage of the cell cycle.
Insert Chart [Hint: don’t forget to consider the relationship between your data and the type of chart to best represent your data]
Conclusion:
Be sure to answer the following reflection questions as a summary in the conclusion of your lab report:
Was your hypothesis correct? Why or why not? Be sure to include evidence from the data you collected to support your conclusion.
Based on your data, what can you infer about the length of time spent in each stage of the cell cycle?
What stages were the longest and shortest? Give a brief explanation of why these stages may have that time period.
Questions:
Using what you have learned in the lesson and the virtual lab activity, answer the following questions in complete sentences.
What differences can you see when you compare the nucleus of a dividing cell with that of a non-dividing cell?
If your observation had not been restricted to the tip of the onion root, how would the results be different?
The distinguishing visible features of each stage of the cell cycle include chromosome condensation, mitotic spindle, equatorial plate and formation of two cells.
What is the cell cycle?The cell cycle is a series of well-defined steps in the life of a cell that begins with cell growth and end with its division.
The cell division has a series of steps that may be classified according to the phenomena that occur in these phases.
For example, chromosomes condense during the first stage of cell division (prophase), where they migrate to the equatorial plate at metaphase.
In conclusion, the distinguishing visible features of each stage of the cell cycle include chromosome condensation, mitotic spindle, equatorial plate and formation of two cells.
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22. Where does most metamorphic rock
form?
A at Earth's surface
B in volcanoes
C in ocean waters
D deep underground
Explanation:
Most metamorphic rocks form deep below the Earth's surface. These rocks are formed from either igneous or sedimentary rocks, making them a changed...
3. Carbon can form __________________ covalent bonds.
4. Covalent bonds are between ___________ and ___________. (metals or nonmetals)
5. Polar covalent bonds ___________________ (do/do not) share electrons equally.
6. Nonpolar covalent bonds___________________ (do/do not) share electrons equally.
7. Define Isomer:
8. What is vitalism? Who disproved it and how?
Monomer
Elements Found
9. Define metabolism, anabolism, and catabolism
What is the name of the column of neurons within the medulla that initiates neural impulses for inspiration and expiration
Energy flow in an ecosystem is best represented by _______.