Answer:
35%
Explanation:
To make a DNA helix, two DNA strands are required. They are connected by the nitrogenous bases on each strand. Each type of nitrogenous base is complementary to another type: cytosine (pyrimidine) pairs with guanine (purine) and thymine (pyrimidine) pairs with adenine (purine). This means they only bond with their pair.
For every cytosine, there must be a guanine bonded to it. So, if 15% of the strand is cytosine, another 15% must be guanine.
Since,
15% + 15% = 30% and 100% - 30% = 70% ,
30% of the DNA strand consists of the cytosine-guanine pair and 70% of the DNA strand consists of the adenine-thymine pair.
Since,
70% / 2 = 35% ,
70% is made up of equal parts adenine and thymine, 35% of the DNA strand must contain thymine.
How can two cells of a complex multicellular organism have the same genome, but markedly different structures and functions
Brendan made a chart to categorize the characteristics of animals. An empty 2-column table titled Characteristics of Animals. Column 1 is labeled Always. Column 2 is labeled Sometimes. Which phrase should be written in the column titled "Sometimes"? Are multicellular Have membrane-bound organelles Produce their own food Display an asymmetrical body plan.
The phrase written in the columns are:
Column 1 : Always Have membrane-bound organelles.
Coumn2 : Sometimes produce their own food.
Column 2: Display an asymmetrical body plan.
What are multicellular organisms?Multicellular organisms are made up of more than one cell.
There is a cell differentiation in these organisms in early stage.
In humans, skin cells, muscle cells, blood cells, and many more different cells are present.
Examples are all animals, plants, and fungi are multicellular organisms.
Thus, the phrase is produce their own food and display an asymmetrical body plan.
Learn more about multicellular organisms
https://brainly.com/question/24381583
Answer:
A
Explanation:
Which procedure involves the destruction of a blood clot using anticlotting agents called clot-busters
Answer:
Lytic therapy - A clot-busting medication given in the hospital into the blood vessel to break up clots. The treatment has a risk of bleeding.
a
What is another name for a polymer that
is an organic molecule?
Answer:When small organic molecules are joined together, they can form giant molecules or polymers. These giant molecules are also called macromolecules.
Explanation:
Accidental radiation exposure resulted in a germ line mutation in an organism. What is the most likely outcome on the progeny of this organism?
A.The change is not carried forward to the progeny of the organism.
B. The change is carried forward to the progeny of the organism.
C. The change is lost in the progeny of the organism.
Answer:
A. The change is not carried forward to the progeny of the organism.
Explanation:
purchasing the latest version of the iPhone is an example of which of the following
Answer:
physiological motivator
Explanation:
because when you buy a phone your physiological reaction is triggered.
The La Brea Tar Pits in Los Angeles are the site of millions of fossils from the ice age. Woolly mammoths, giant sloths, dragonflies, and other plants and animals from this era have been found in these pits.
Scientists at the tar pits discovered that many of the smaller animals they extracted from the pits still exist around Los Angeles today. But many of the larger mammals—such as woolly mammoths and saber-toothed tigers—are now extinct. Why do you think this is the case? What can scientists learn about Los Angeles’ climate history by studying the specimens found in these tar pits?
Answer:
231 species
Explanation:
More than one million bones were recovered in 1906. These bones represented 231 species of vertebrates and there were 234 species of invertebrates.
Los Angeles climate is relatively stable for over 50,000 years. The fossils of more than 180 insects were preserved in La Brea Tar Pits. The climate warming probes a link for evolution of Ice Age predators.
Explanation:
Mammals like sabertooths and mammoths both are extinct because Its reliance on large animals has been proposed as the cause of its extinction, along with climate change and competition with other species, but the exact cause is unknown.
The second question you can do independently, but anyways hope this helped you!
Which of these does NOT explain why humans and other mammals breathe through lungs, unlike amphibians and other animals that take in oxygen through simple diffusion?
A. Large animals need more oxygen than small ones.
B. Oxygen can only pass through a constantly wet membrane.
C. Mammals have fewer cells than other types of animals.
D. Warm-blooded animals need a lot of oxygen to regulate their body temperatures.
Answer: B
Explanation: Frogs have a moist, permeable skin, which can transfer gasses such as carbon dioxide and oxygen. Humans have dry skin that is impermeable to gas exchange, so almost all gas exchange takes place in the lungs. This means human lungs must be more efficient than frog lungs
Answer:
B
Explanation:
it is so due to osmosis because molecules of oxygen can move through a semi permeable membrane or a permeable membrane and wet membrane is an example
What is an example of something that increased tax revenue could pay for ?
Answer:
Increased tax revenue could pay for more government-provided services. This includes things like Social Security, Medicare, food stamps for the poor, infrastructure, etc.
Basically, an increase in tax revenue can raise money for the government to pay for more things that benefit the American people as a whole
Explanation:
Select the correct answer from each drop-down menu. complete the passage about earthquakes. earthquakes sometimes occur when . some underwater earthquakes shake the ocean floor and cause large sea waves that destroy property and threaten lives. such a sea wave is called .
Earthquake occurs due to friction between tectonic plates. The correct options are:
First blank: Option C: A transform boundary causes excessive amounts of friction between two tectonic plates,Second blank: Option B: tsunamiWhen does earthquake happens?An earthquake occurs when the Earth's crust moves suddenly. As the tectonic plates grind against each other, pressure builds up. Earthquake can occur when the plates collide, spread etc.
The options for first 'blank' space are:
a. A volcanic island moves away from a hotspot and it goes extinctb. The solid rock layer in the lithosphere is no longer influenced by the more fluid asthenosphere, c. A transform boundary causes excessive amounts of friction between two tectonic plates, d. A divergent boundary abruptly reserves rolls to become a convergent boundaryThus, correct statement would be:
Earthquakes sometimes occur when A transform boundary causes excessive amounts of friction between two tectonic plates.
(option C)
Now, the second blank has options:
a. an avalanche, b. a tsunami, c. a tidal wave, d. a landslideIt asks the name for "some underwater earthquakes shake the ocean floor and cause large sea waves that destroy property and threaten lives. such a sea wave is called "
Tidal waves are caused by gravity of heavenly bodies, mainly moon.Landslide is sliding of land from hillside etc places.Avalanche is falling of snow, rock and ice from a mountain or hill type region.Tsunami is correct option here, it is caused because of shaking of ocean floor.Thus, Option B: A tsunami is correct.
Thus correct statement would be:
some underwater earthquakes shake the ocean floor and cause large sea waves that destroy property and threaten lives. such a sea wave is called a tsunami
Thus, the correct options are:
First blank: Option C: A transform boundary causes excessive amounts of friction between two tectonic plates,Second blank: Option B: tsunamiLearn more about earthquakes here:
https://brainly.com/question/3223783
Importance of soil pollution
Answer:
Besides air pollution, four other important types of pollution are soil, water, waste, and noise pollution -D.
Noise pollution comes from being overly loud compared to other species. Humans create a lot of noise pollution in cities where there is a lot of things going on and with that we create a lot of damage to the environment.
Explanation:Hope it's helps you ! : )
Answer:
Soil pollution causes a chain reaction. It alters soils' biodiversity, reduces soil organic matter and soils' capacity to act as a filter. It also contaminates the water stored in the soil and groundwater, and causes an imbalance of soil nutrients.
Explanation:
hope it helps you
what would happen if DNA replication it didn't occur?
Answer:
If DNA replication does not occur, then the cell cycle (Mitosis and Miosis) will not proceed to the next stage and the subsequent division will not happen. It will lead to cell death.
Simply put, without cell replication, cells can’t divide and they eventually die out.
A population of fish lived in a large lake. During a storm, a huge landslide occurred, bringing a large amount of land into the lake and splitting the lake into two bodies of water. Over many years, the fish population in each body of water evolved. The two fish populations can no longer breed together.
Is the speciation above an example of allopatric speciation or sympatric speciation? Explain how you know by referring to the definition of each.
Answer: Allopatric speciation
Explanation: Because in allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation.
I searched it up and both don't fit this 100% so I am kinda just making a guss because the first part on this sounds right but the 2nd part doesent and on the other one the first part sound wrong but the 2nd part sounds correct.
Sorry if its wrong.
The given example shows allopatric speciation, because due to a storm, a huge landslide occurred, bringing a large amount of land into the lake and splitting the lake into two bodies of water.
What is allopatric speciation?A period of geographic separation causes groups from an ancestral population to diverge into distinct species in allopatric speciation. Without any geographical separation, groups from the same ancestral population diverge into distinct species in a process known as sympatric speciation.
While parapatric or sympatric populations live in the same habitat, allopatric populations are physically isolated from one another.
Therefore, while sympatric species share a single ecological niche, parapatric populations occupy different environmental niches and are thus divided by ecological variables.
Learn more about speciation, here:
https://brainly.com/question/4493180
#SPJ2
What do chromosomes contain?
Answer:
DNA
Explanation:
Answer:
the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
The enzyme that travels along a template strand, assembling nucleotides into a growing DNA strand, is
Answer: DNA Polymearse 111
In which stage of the cycle of a flowering plant does the plant produce seeds through pollination?
Answer:
maybe fertilisation
Explanation:
When the pollen reaches another flower, it travels to the ovary where it fertilises the egg cells to make seeds. This process is called fertilisation. These seeds are scattered by animals or the wind.
Answer:
I believe it would be the reproductive stage. In this stage of life, the plant begins to flower, aswell as fertilize and then produce the seeds.
Explanation:
Hope this helps. :)
The respiratory system that involves diffusion of oxygen and carbon dioxide directly into and out of cells is ______.
Answer:
Alveoli
Explanation:
they are very small air sacs which performs the exchange of oxygen and carbon dioxide takes place. CAPILLARIES are blood vessels in the walls of the alveoli.
Which of the following planets has the longest orbit?
A. Mercury
B. Earth
C. Neptune
D. Mars
[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]
The Correct choice is C. Neptune !
since Neptune is the farthest planet from sun in our solar system, it has to cover the longest orbit.
The best explanation of how organism are able to develop and grow is by:
Answer:
growth and development
Explanation:
when you read this topic you can understand that in humans there are hormones in charge of growth and then in plants there are also hormones that enable enlongation andalso reasons why some plants are short
At which site on the dna of a gene does rna polymerase release its newly made rna?.
Answer:
promoter region
Explanation:
NONE
Many of the rocks of the canyon wall
appear as horizontal bands. What do the
bands indicate about the way the rocks
formed? PLEASE ANSWER QUICK
Many of the rocks in the canyon wall the horizontal bands originate from erosion in their formation.
The hypotheses about the formation of canyonsThe hypotheses about the formation of canyons revolve around the movements of tectonic plates and the uplift of certain areas, that is, when a place is “lifted” by the force of tectonism.
With this information, we can conclude that many of the rocks in the canyon wall the horizontal bands originate from erosion in their formation.
Learn more about canyon in brainly.com/question/10770602
Bacteria that are able to survive in an alkaline environment having bile salts present are adapted to living in the
hello humans ~
Assertion (A): Chromosomes are responsible for the transfer of characteristics from parents to offspring.
Reason (R): Chromosomes are present in the nucleus.
A. Both A and R are true and R is the correct explanation of A
B. A is true but R is false
C. A is false but R is true
D. Both A and R are true but R is not the correct explanation of A
Answer:
Option B
Explanation:
In the nucleus, thread-like structures called chromosomes are present.These carry genes which contain all the information needed by the cell to function and to reproduce. IGenes are also responsible for all the characteristics of an individual. Thus, genes are responsible for inheritance i.e., transfer of characteristics from the parent to the offspring.
Darwin’s finches have different beaks in terms of size and shape to be able to eat different food sources like insects, nectar, and seeds. Cactus finches have longer, more pointed beaks to probe cactus flowers compared to their relatives, the ground finches.
If a plant disease killed a large portion of the cacti on the Galapagos islands, what would the future populations of finches look like in terms of beak size and shape? Use your knowledge of natural selection to determine which option is most likely.
A. Cactus finches would compete for food with ground finches and exhibit competitive exclusion, so the beaks of future generations would be similar to whichever finch outcompetes the other.
B. Ground finches would survive and pass on their shorter and wider beaks, so there would be a higher proportion of finches in future generations that have short and wide beaks.
C. Ground finches would survive and pass on their beaks, but they would mate with the remaining cactus finches, creating a new hybrid that is somewhere between short versus long and narrow versus wide.
D. Cactus finches would compete for food with ground finches and exhibit resource partitioning, so the beaks of future generations would not change.
Answer:
The Answer should be B
Explanation:
The Knowledge of natural selection to determine which option is most likely Ground finches would survive and pass on their shorter and wider beaks, so there would be a higher proportion of finches in future generations that have short and wide beaks.
What is natural selection and example?
Natural selection is the procedure in nature by which organisms sufficiently adapted to their environment survive and replicate more than those less adapted to their environment.
For example, treefrogs are sometimes eaten by snakes and birds.
Thus, option "B" is correct.
To learn more about natural selection click here:
https://brainly.com/question/2725702
The four cells produced in meiosis will have a
Answer:
At the end of meiosis, all four cells formed are identical as far as the number of chromosomes is concerned, but will not be identical to each other as far as the genes present on the chromosomes.
Hope this helps :)
Before her eggs are due to be collected for IVF, a woman is injected around 36 hours before collection. This injection usually contains human chorionic gonadotrophin (hCG). Why is this hormone used prior to the collection of eggs
Stete five importance of the soil to plant and animal
Answer:
Soil provides habitat, water, air and food for animals. Healthy soil allows for plants to grow which provides animals with shelter and materials to build it. Soil also provides food for animals as many animals eat plants as their main source of nutrition.
Explanation:
Answer:
It absorbs , holds,releases and purifies water.It provides a sustainable habitat to animals living in the soil.It helps in the growth and development of the plants.It acts as the base for building homes,roads and buildings.It helps to regulate the earth's temperature.How long are spices good for after expiration date?.
Answer:
Whole spices will stay fresh for about four years, while ground spices run between three and four years
Explanation:
Give an example (except for a plant responding to light) of an organism's response to a stimulus.
Answer:
plants For example, phototropism is the plant's response to stimulus, i.e. sunlight. A plant hormone “auxin” keeps the plant's direction towards the sun by activating the growth in a particular part of a stem. Similarly, gravitropism in plants responds to the stimulus, i.e. gravity
Explanation:
mark me brainliest!!
Please help I have no idea the awnser
Answer:
yes u should always view your notes