DNA replication needs to occur because existing cells divide to produce new cells.Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
HOPE IT HELPS YOU OUT PLEASE MARK IT AS BRAINLIEST AND FOLLOW ME PROMISE YOU TO FOLLOW BACK ON BRAINLY.INSORRY FOR SPAMMING BUT PLEASE HELP I ALWAYS FAIL AT BIO
Answer:
dinasour A lived before dinasour B
Bromothymol blue (BTB) is a pH indicator that is also used to detect carbon dioxide (CO2). BTB is blue when pH is basic and CO2 is low. BTB is yellow when pH is acidic and CO2 is high. BTB is green when pH is neutral. A group of students are planning to perform an investigation in which they will place either a stalk of the aquatic plant elodea or a snail in a test tube that contains water with a neutral pH of 7 and BTB. The students will also include a test tube that contains elodea and a snail. Observing color change once the tubes have been placed under a growth light for several hours will allow the students to answer which TWO of the following questions?
A. Do both elodea and snails require oxygen to survive?
B. Does elodea produce oxygen during photosynthesis?
C. Do snails respire faster when placed in a tube with elodea?
D. Do snails use the CO2 produced by elodea to produce oxygen?
E. Does photosynthesis performed by elodea remove CO2 from the water?
F. Does cellular respiration occur at a higher rate than photosynthesis in the tube with only elodea?
I need 2 answers! Thanks
Answer:
E. Does photosynthesis performed by elodea remove CO2 from the water? F. Does cellular respiration occur at a higher rate than photosynthesis in the tube with only elodea?Explanation:
The tubes were placed under a growth light and as the elodea is growing, it would need photosynthesis to provide food. The color changes will therefore allow the students to see the effect photosynthesis has on the CO2 in the water by checking to see if the BTB turns blue which would mean that CO2 was removed by photosynthesis.
The students will also be able to see which process occurs faster in the tube with only elodea because the dominant color would show if cellular respiration occurs faster than photosynthesis or if the case is the reverse. For instance, if respiration is occurring faster, there will be more CO2 which would turn the BTB towards yellow, if photosynthesis is faster the BTB will turn towards blue and if the rates are similar, the BTB will remain green.
many plants obtain glucose from
Answer:
[tex]\boxed {\boxed {\sf Photosynthesis}}[/tex]
Explanation:
Plants, algae, and some kinds of bacteria have the ability to photosynthesize. They have special organelles called chloroplasts.
These organelles are the site of photosynthesis. They contain green pigment known as chlorophyll which can capture sunlight. The light energy plus carbon dioxide and water are converted into glucose and oxygen.
The glucose becomes the organism's food and energy source, but the oxygen is just released as a waste product.
Answer:
[tex] \blue{\boxed{\boxed{\bold{\large{Photosynthesis}}}}} [/tex]
Explanation:
[tex] \bold{CO_2 + H_2O \to C_6H_{12} O_6 + O_2}[/tex]
Thank you :-)
Answe this pls smart people need help
Answer:
i am pretty sure that the answer is, She tells you that it hurts.
Explanation:
If the girl is crying it is pretty obvious that it hurts. Everything else is like a hint to what medicine she needs. If she tells you that it hurts that not really a hint because almost every sickness hurts.
I HoPe ThIs HeLpS
What is an bioaccumulate
Answer:
(of a substance) become concentrated inside the bodies of living things.
Explanation:
*PLEASE ANSWER ASAP*
In which body part are you most likely to find fibrous connective tissue?
a.) external ear
b.) cerebrum
c.) superior vena cava
d.) anterior cruciate ligament (ACL)
Answer:
Explanation:
d.) anterior cruciate ligament (ACL)
No ones helping me. Only answer if you know :( Due by the end of today
Answer:
Explanation:
The black trait is a recessive trait because it only shows up in 3 people in that is rare. It also only occurs in either male or female looking at the shapes. The first part may be wrong but I believe that this is a Autosomal trait because it isn't occuring in every single person meaning it is a mutation.
I honestly hope this helps you.
What is the y intercept -15,9
The DNA sequence reads ACGTTCATT before a mutation occurs. After the mutation, the DNA sequence reads ATCGTTCATT. Which type of mutation occurred?
Answer:
the Answer Is B or Insertion.
Explanation:
Answer:
B
Explanation:
At room temperature, more than half of the nonmetal elements are _____.
A.alloys
B.solids
C.gases
Answer:
C
Explanation:
13 Why should animals become
adapted to live in fast-flowing
water when there are regions
of slow-moving water in a
river?
Answer:
If the animals adapted to fast flowing are found in slow moving water- it could be: 1) They are temporarily dislodged & will get back to its original position or search for a suitable place. 2) If the niche is the same, slow moving water might be only a temporary phenomenon.
What happens when magma cools during the rock cycle? Igneous rock is formed. Metamorphic rock is melted. Sediments form sedimentary rock. Metamorphic rock forms sediments.
Answer: igneous rock is formed
Explanation:
When magma cools down during the rock cycle then igneous rock is formed. Thus, the correct option is A.
What are Igneous rocks?Igneous rock is one of the three main rock types, while the other being sedimentary and metamorphic rocks. Igneous rocks are the rocks formed through the cooling and solidification of magma or lava from volcano. The magma can be derived from partial melts of existing rocks in either a planet's mantle or the crust.
Lava from the volcano cools to form volcanic rock as well as volcanic glass. This magma can also extrude into Earth's atmosphere as part of a violent volcanic explosion. This magma then solidifies in the atmosphere to form volcanic rock called as tephra. In the atmosphere, tephra is more often called as volcanic ash.
Therefore, the correct option is A.
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HELP!!! QUICK!! I'LL GIVE BRAINLYEST!! 14 POITNTS RIGHT NOW!!!
Using the table on the right as a guide, answer the following questions about light-independent reactions.
Describe the process of light-independent reactions.
What are the products of light-independent reactions?
Answer:
Light reactions harness energy from the sun to produce chemical bonds, ATP, and NADPH. These energy-carrying molecules are made in the stroma where carbon fixation takes place. The light-independent reactions of the Calvin cycle can be organized into three basic stages: fixation, reduction, and regeneration.
Answer:
It uses ATP and NADPH and converts it into glucose and other carbohydrates; glucose and other carbohydrates
Explanation:
EDGE 2020
why do plants need to resort to natural and artificial reproductive methods to propogate plants
Answer:
plants can undergo natural methods of Asexual reproduction performed by the plants its self or artificial methods ,aided by humans
Explanation
in natural asexual reproduction roots can arise new plantswhat is the pH of common solutions? vitual lab
Answer:
it ranges from 0-40
Explaination:
pH values will lie mostly in the range 0 to 14, though negative pH values and values above 14 are entirely possible.
A cell can be part of a larger system.
True
O False
Answer:
true
Explanation:
There are millions of cells in your body. That means a cell can be part of a larger system. larger system = your body
What types of ion attract and form a ionic bond?
Answer:
Positive and negative ions
Explanation:
when these two come together it is considered ionic bonding.
ANSWER THIS NOW PLS
Ground tissue includes and is responsible for ALL of the following, EXCEPT one of these
A) Transport of water
B) Site of photosynthesis in the leaf
C) Metabolism, storage, support
PLZ HELP ASAP! No copy and pasting!
Fusarium oxysporum is a fungus that attacks tomato plants, causing them to wilt and die. The fungus initially blocks the xylem and grows extensively within parenchyma. As the plant continues to wilt, the blockage of both xylem and phloem can be observed. The result is the suppression of both the xylem sap circulation in the plant and photosynthetic activity in the leaves.
Based on these observations, explain how the fungus affects the role of both the xylem and the phloem.
Answer:
The xylem transports water to the plant, so if the fungus blocks the xylem, the plant would eventually dehydrate, affecting the role of the xylem.
The phloem transports glucose, nutrients and such, therefore the fungi may try to steal the nutrients for the plant, affecting its role.
Explanation:
copied from the other person so i can get my points lol
An agricultural biologist was evaluating two newly developed varieties of wheat as potential crops. In an experiment, seedlings were germinated on moist paper towels at 20ºC for 48 hours. Oxygen consumption of the two-day-old seedlings was measured at different temperatures. The data are shown in the graph below. In a second experiment, variety A seedlings at both temperatures were treated with a chemical that prevents NADH from being oxidized to NAD+. Predict the most likely effect of the chemical on metabolism and oxygen consumption of the treated seedlings. Explain your prediction.
Answer:
The definition is listed in the clarification segment below, and according to the present circumstances.
Explanation:
It undergoes different morphological as well as biochemical modifications mostly during germination. Product contains nutrients and even some hydrolases such as energy, carbohydrates. Owing to the availability of phytic compounds, the seed coat seems to be very durable in nature. Hydrolytic enzymes launch their function by consuming oxygen throughout order to remove this hard coating. In several other processes, including the electron transport system as well as the Kreb process, oxygen also becomes necessary.
The initial phase of germinating seeds requires anaerobic environments where even the enzymes dehydrogenase can function. The subsequent dehydrogenase enzyme brings the electron throughout the electron transport system from either the base to oxygen. Unless the oxygen frequency is compared with varieties A and B, it can be seen through the analysis that variety B actually absorbed more oxygen. Oxygen intake rates are also depending upon period.The impact of temperature mostly on absorption of oxygen seems to be present. Shift the supply at low temperatures have a low intake of oxygen, while varieties grown over extreme temperatures use much more oxygen. The metabolism of such a seedling is influenced by temperature. Metabolically active young plants display a larger intake of oxygen.What is the function of the macromolecule nucleotide?
A.SHRED STC
B.Immediate energy
C.Stored enery
D.Body instructions
Answer:
I believe that the answer is D.
Explanation:
A) is wrong
B) is carbohydrates
C) is lipids
D) is nucleic acids and the monomer of nucleic acids are nucleotides.
1. View the cartoon image at right. You’ve been volunteering in a kindergarten classroom, and one of the children asks about the biological levels of organization that you are studying (in random order): tissues, cells, organ systems, organs. From smallest to largest, explain these levels as they relate to the cartoon image below. Remember, it is unlikely the children in this kindergarten class have taken an advanced science course yet so keep this in mind when making your explanation.
Answer:
May you please include the image, so I can help you?
Explanation:
I need visuals.
Select the correct answer.
A skeletal muscle is a composition of several components bundled one into the other. At which structural level in the muscle does contraction
occur to bring about contraction in the whole muscle?
OA myofibril
OB. muscle fiber
Oc myoneural Junction
OD tendon
OE. fascicle
Answer:
myofibrils
Explanation:
The skeletal muscles are involved in the movement and actions. The myofibril initiates the contraction to make the whole muscle contract. Thus, option A is correct.
What is myofibril?Myofibril is an organelle of the muscle cells that makes the muscle fibers of the skeletal muscles. The myofibril comprises myofilaments that are responsible for appearance and movement.
The myosin is the thick myofilament and actin is the thin myofilament that comprises the sarcomere that brings about the contraction by sliding over each other.
Therefore, the myofilaments (actin and myosin) of myofibril bring about the contraction of the muscles.
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What is the effect of catalase on the decomposition of hydrogen peroxide? A. It decreases the activation energy needed to start the reaction. B. It decreases the total energy released by the reaction. C. It increases the total energy absorbed by the reaction. D. It changes the ratio of the amounts of the two products.
Answer:
A. It decreases the activation energy needed to start the reaction.
Explanation:
Catalase is an enzyme found in the cells of organisms exposed to aerobic conditions. It is an enzyme that catalyses the breakdown or decomposition of hydrogen peroxide in the liver to water (H2O) and oxygen (O2).
Catalase, like every other enzyme, operates by binding to the substrate, which in this case is hydrogen peroxide. Catalase then REDUCES or LOWERS the ACTIVATION ENERGY needed to start the reaction.
How are photosynthesis and cellular repiration similar
Answer: The two processes are similar in that they both produce energy, albeit in two different forms. They are different in that photosynthesis assembles the glucose molecule, while cellular respiration takes it apart.
Explanation: Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.
Cardiac muscles
have light and dark stripes
control the heart
are striated
are voluntary
Answer:cardiac muscles are striated
Explanation:
Answer:
cardiac muscles are striated
Explanation:
yw
7) Select 2 that apply.
Which nucleotides can pair together? Select all that apply.
please help
Answer:
Adenine(a) and Thymine(t), Cytosine(c) and Guanine(g)
Explanation:
Which chemical equation BEST represents the process of photosynthesis?
Your Answer
A
X CO2 + H2O --> C6H12O6 + O2
B
6CO2 + 6H2O --> C6H12O6 + 602
С
C6H12O6 + O2 --> CO2 + H2O
D
C6H12O6 + H2O --> CH1206 + O2
Back
Answer:
B:
6CO2 + 6H2O --> C6H12O6 + 602
Explanation:
Answer:
The answer is B.
Explanation:
Which of the following is the correct level of organization from simple to complex?
cell - organ - tissue - organism
organism - organ - tissue - cell
tissue - organ - organism - cell
cell - tissue - organ - organis
Answer:
Hi everyone. I belive it is C. because a community is is all of the populations of different species that live in the same area and interact with one another.
Explanation:
Hope this helps. Let me know if im wrong but im pretty sure i'm right
have a nice day <3
Answer:
the person before me is right and very nice. Most people on this website don't wish you to have a nice day! ;p
Explanation:
I took the quiz and got it right.
Photosynthetic pigments can be separated using a technique
called paper chromatography. Which of the following
statements is false regarding this technique?
O A solvent is needed to move the molecules up the
chromatography paper.
Water was used as the solvent to separate the various pigments.
The smaller molecules moved faster and further up the
chromatography paper after a certain amount of time
The paper chromatography can be used to separate all
photosynthetic pigments not just chlorophyll.
