Answer:
B.Strong hydrogen bonds
Explanation:
The deoxyribonucleic acid (DNA) molecule consists of two chains or strands of nucleotides that are held together in a double helix by hydrogen bonds between the bases of the nucleotides.
16 An organism with a cell wall would most likely be unable to take in materials through
A) osmosis
B) facilitated diffusion
C) active transport
D) endocytosis
Answer:
endocytocis
Explanation:
1.) If a strand of DNA has 10% G, what percent will be T?
2.) If a strand of DNA has 45% A, what percent will be C?
3.) If a strand of DNA has 24% T, what percent will be G?
A student observed a palisade cell using a microscope. The microscope had four objective lenses, each with a different magnification. Which objective lense should the student use?
Answer:
x4 objective
Explanation:
The student should use the x4 objective lense in order to be able to observe the palisade cell of a leaf.
The palisade cells are located below the cuticle and the epidermis of the leaf and the x4 objective will provide the largest field of view for adequate study by the student. The x4 objective is also easier to focus compared to the lower objectives.
I need help in this I’m confused
Answer:
A
Explanation:
see, if the beetle population decrease. the green plants will have nothing that eats them so they will increase. but since the owl's existence depends on every other organism to the left, any decrease will affect is negatively.
Both a man and a woman are heterozygous for freckles. Freckles (F) are completely dominant over no freckles (f). What is the chance that their child will have freckles? Show the genotypes crossed, and the probability of each genotype and phenotype that may result from the cross.
Answer:
The chances that their child will have freckles equals 75% or 0.75.
Explanation:
Due to technical problems, I was not able to complete the explanation in this box. You will find it in the attached files.
Can someone please explain how the carbon cycle and nitrogen cycle works
Answer:
Explanation:
Humans have changed the natural carbon cycle by burning fossil fuels, which releases carbon dioxide into the atmosphere. The nitrogen cycle begins with nitrogen gas in the atmosphere then goes through nitrogen-fixing microorganisms to plants, animals, decomposers, and into the soil.
Which of the following statements is subjective?
A. Van Gogh painted beautiful works of art.
B. Einstein was a scientist.
C. The planets revolve around the sun.
D. Blue is a color.
The answer is
Cell division occurs in two stages: division of the nucleus, called
Choose...
, and division of the cytoplasm, called
Choose...
.
Answer:
mitosis, cytokinesis
Explanation:
Cell division occurs in two stages: the division of the nucleus, called karyokinesis, and the division of the cytoplasm, called cytokinesis, and both of these include cell division and form two cells from one.
What is the significance of karyokinesis?There are many steps in cell division, two of which are important, the first is the division of the nucleus, known as karyokinesis, which is the process of nuclear division that includes replication of the genetic material and separation of the duplicated chromosomes and is important for the production of genetically identical daughter cells for growth and repair in multicellular organisms. The single cell is divided into two cells after cytokinesis, which occurs at the end of cell division.
Hence, cell division occurs in two stages: the division of the nucleus, called karyokinesis, and the division of the cytoplasm, called cytokinesis, and both of these include cell division and form two cells from one.
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please help me, i dont like this
Answer:
the answer is true because plant can be infected
by parasitic
sorry if wrong
Answer:
This is true.
Explanation:
Some plants are parasitic, which means they do not make their own food. They do, however, steal necessary water and minerals from other plants, often killing the other plants off. Parasitic plants sometimes do have chlorophyll, and others do not.
Which of the following statements is true regarding the vice president's role in the Senate?
In recent years, vice presidents have been less active in the Senate.
Most modern vice presidents have voted hundreds of times in the Senate.
Vice presidents will often get involved in debates being held in the Senate.
The vice president may cast a vote in the Senate whenever they chose.
Answer:
answer ...In Recent year, vice presidempnt have been less active in the Senate
Explanation:
hope It will help
PLEASE PLS PLS ANSWER FASTT
Which of the following is not an example of chemical weathering?
a Animals burrowing in the ground and causing rocks to become exposed and then further weathered by wind and other elements.
b Acid rain reacting with rocks.
c Plants that produce acid and slowly wear down the rocks
d Rocks that contain iron react with oxygen and water and cause rocks to turn a reddish color.
Since chemical weathering is the reaction of rocks with other chemicals, the answer should be answer D!
Hope this helps, if not, comment below please!!!
WILL GIVE BRAINLIEST!!!!!
If you put a raisin in water, which way will the water move?
Answer:
the water will move into the raisin because the raisin doesn't have a high water concentration and the water is looking for somewhere less dense it can go.
Explanation:
How does the muscular system help humans maintain posture?
1.Muscles continually align themselves vertically to help maintain posture.
2.Muscles continually push bones to be straight.
3.Muscles constantly contract to help fight gravity.
4.Muscles constantly contract to help work with gravity.
Answer:
a
Explanation:
Muscles continually align themselves vertically to help maintain posture.
What is Muscular system?Muscle fibers are specialized cells that make up the muscular system. Their ability to contract is its main characteristic. Movement is caused by muscles that are connected to blood vessels, internal organs, or bones.
Muscle contraction is the primary cause of almost all bodily movement. Cilia, the flagellum on sperm cells, and certain white blood cell amoeboid movement are examples of exceptions to this rule.
Walking and running are two examples of visible movements that are produced by the coordinated action of joints, bones, and skeletal muscles. Skeletal muscles can also make softer motions that influence different facial expressions, eye movements, and breathing.
Therefore, Muscles continually align themselves vertically to help maintain posture.
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how can mass help identify an unknown substance
Answer:
Explanation:
You cannot use mass to tell one substance from another.
two very different objects can have the same mass.
VERY EASY 7TH GRADE SCIENCE QUESTION FIRST PERSON BRAINLIEST!!!!
The final velocity minus the initial velocity divided by time is the formula for —
A. constant speed
B. ending velocity
C. average speed
D. acceleration
Mention the type of seeds that undergo hypogeal germination.
What do we call the process of permanently stopping babies from breast feeding?
plzz help it is due today
Answer: For Types of Seeds that Undergo Hypogeal germination, You have Rice, Maize, Groundnuts, Pea etc.
Complete Weaning is the process of stopping babies from breast feeding
Explanation: Hyougeal Germination: In this type of germination, the epicotyl elongates and the cotyledons remain below the soil. Pea, mango, maize, rice, gram and groundnut have germination of this kind.
who good at physiology
Answer:
not me sorry for wasting your time
Explanation:
SORRY
Which phrase correctly defines net production efficiency? The amount of energy–
A. captured from sunlight
B. available to decomposers
C. stored in roots
D. available to make new tissue tissue
The statement that describes net production efficiency from the question is The amount of energy ;A. captured from sunlight
Net production efficiency can be regarded as measure that explains the way each trophic level make use of energy and also incorporate it from their food into biomass so that another level of trophic can be fueled.Option A, which State that the energy captured from the sun is correct because it serves as the efficient and principal energy for all trophic level.
Therefore, option A is correct.
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Please select the word in parentheses that fits the sentence:
A catalyst [weakens/strengthens] the bonds of the reactants [increasing/decreasing] the activation energy.
Answer:
Weakens and Lowers activation energy
Explanation:
please hellp asappppp In an area with very tall trees shading an understory of shorter trees, all of which have epiphytes growing on them, which of the following other conditions are most likely to exist as well?
It is near 30° latitude north or south or on the leeward side of a mountain range.
Moist air is rising over the area.
Night temperatures are much colder than daytime temperatures.
The soil has a thick layer of decomposed, nutrient-rich organic material.
There is an extremely high diversity of species in the area.
There is little rainfall and frequent fires regularly cut the vegetation to the ground.
4 and 6
1 and 3
2 and 5
3 and 4
please please give me the brainlyest answer
Which of the following statements is true about the movement of fluid in a
convection cell?
A. Hot fluid rises because it is denser.
B. Cool fluid rises because it is less dense.
C. Cool fluid sinks because it is denser.
D. Hot fluid sinks because it is less dense.
The option that is true about the movement of fluid in a convection cell is B. Cool fluid rises because it is less dense.
What is a convection cell?It should be noted that a convection cell simply means a system where a fluid is warmed and loses density.
In this case, cool fluid rises because it is less dense. The colder and denser part of the fluid simply descends below the warmer fluid.
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Describe how bacteria have become resistant to treatment.
Answer:
Explanation:
Bacteria gene will mutate and this trait will be passed along to the offspring. This allows them to withstand treatment.
Gerry's Genotype is heterozygous Rr. BillyBob is heterozygous Ss. Complete the Punnett square below to show the possibilities that would result if Billy Bob & Gerry had children.
Please help me
Answer:
S s
R SR Rs
r Sr rs
Which sequence of RNA transcribed from the base sequence of DNA is ATA CCG ATC GAT
a. UAU GGC UAG CUA c. GCG CCG ATG GUA
b. TCG CCC AUG CUA d. UAU CCG AUG CUA
Answer:
a
Explanation:
this image shows what each letter changes to.
Answer:
The transcription of the sequence ATA CCG ATC GAT is a. UAU GGC UAG CUA
Explanation:
T --> A
A --> U
C --> G
G --> C
What is the driving force for plate tectonics?
A.Gravity slab pull
B.The gravity of the Moon and Sun
C.Heat from the Earth's core causing mantle convection
Answer:
Option C
Explanation:
Driving force for plate tectonics is the "convection in the Earths mantle" or option C. Convection is the transfer of heat due to the movement in molecules also causing hot to rise and cold to sink. Convection currents cause the tectonic plates to move because the currents rise to the Earths surface forcing the plates to drive away from each other also known as seafloor spreading.
Hope this helps
As the fruit develops, why do the petals, stamen, and sepals fall off?
A. The fruit absorbs them, which gives the fruit its color.
B. They have served their purpose and are no longer needed by the plant.
C. The material in the petals, stamen, and sepals become the skin of the fruit.
D. The flower has become dehydrated.
Answer:
A. The fruit absorb them, which gives the fruit its color
Explanation:
basta yunn
What are some of our key mineral resources and what are our known reserves?
Answer: heyy
nnejdew
Explanation:
Rotenone, a piscicide (fish poison), interferes with the transfer of electrons between Complex I and Complex II in the process shown above. Which of the following results would be expected in the mitochondria of fish exposed to Rotenone? Why?
Answer:
Mitochondria stops working.
Explanation:
When the mitochondria of fish exposed to Rotenone, it inhibits the cellular respiration which is the main cause of death of fishes. This inhibiting of cellular respiration in mitochondria leads to reduction in cellular uptake of oxygen and this reduction is responsible for the death of fishes. This Rotenone releases by the plants present in the water as well as used as pesticides for killing of fishes.
Which of the following statements describes one way that energy is transferred in a food web?
Plants provide energy to consumers.
Energy is cycled between producers.
Consumers obtain energy directly from sunlight.
Producers store energy made by animals.
Answer: energy is cycled between producers
Explanation:
Plants provide energy to consumers, herbivorous and decomposers consumers are the only two groups that directly receive energy from plants.
What is a food web?The process of photosynthesis in plants transforms solar energy, which makes up the vast majority of the energy in food webs, into chemical energy.
When molecules are broken down during respiration in plants, a small fraction of this chemical energy is converted directly into heat. From producers to consumers, energy flows.
The relationships between species in a biotic community that involves eating are described by food chains, food webs, and/or food networks. In other words, they demonstrate the flow of resources and energy within an ecosystem from one species to another.
Therefore, plants provide energy to consumers one way that energy is transferred in a food web, hence option A is correct.
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water molecules are polar, with the
Answer:
Water molecules are polar, with the oxygen side being slightly negative and the hydrogen side being slightly positive. ... In a water molecule, shared electrons spend more time around the oxygen atom than the hydrogen atoms. As a result, the oxygen atom is slightly negative.
Explanation: