Answer:
There are two reasons for this. The first reason is that the distance between the two strands of DNA is constant. Two purines together would be too big to fit in that distance, and two pyrimidines together would be too small. The second reason is that the bonding between purines and pyrimidines is very specific.
credits to google
Explanation:
A man and a woman both have blood type AB. What is the probability their child will be blood type B?
Answer:
25%
Explanation:
you can solve this with a punnett square as well :)
I’ll give you a thanks, please help!
Answer:
carbon dioxide
Explanation:
this is formed during photosynthesis
Answer:
Carbon dioxide
50 POINTS + BRAINLIEST!
Coal is best used as a
A.) fuel
B.) paint
C.) fertilizer
D.)conductor
Answer:
A.) fuel
Explanation:
Coal is best used as a fuel to generate electric power.
Anthracite is the best quality of coal with least ash content.
A scientist creates a pedigree to map out a family’s inheritance pattern for a genetic disorder. After analyzing the chart, it is determined that the genetic disorder is likely autosomal recessive. Which of the following genotypes would best represent individual B and individual C?
A. Individual B: Hh / Individual C: Hh
B. Individual B: HH / Individual C: HH
C. Individual B: HH / Individual C: hh
D. Individual B: hh / Individual C: hh
Answer:
A
Explanation:
only one is black while the rest is white
B is out because all the children would be the same
C is out because the children would all be the same
D is out because all the children would be the same
1. What was the accepted belief in the origin of life in the 19th century?
Answer:
As evolution became widely accepted in the 1870s, caricatures of Charles Darwin with the body of an ape or monkey symbolised evolution.
What is the result when a single cell reproduces by mitosis?
two cells with genetic material identical to the parent cell
two cells with half the genetic material of the parent cell
four cells with half the genetic material of the parent cell
four cells with genetic material identical to the parent cell
Answer: The answer is two cells with genetic material identical to the parent cell.
Explanation: I am also studying this in class and we went over many instances where this question was brought up and the correct answer is four cells with genetic material identical to the parent cell because besides the fact that when you reproduce one cell you get two cells, (which makes logical sense from both a science and a math standpoint) you always have identical DNA to the parent cell and you never get half of it or else it would mess up the whole reproductive process.
The result when a single cell reproduces by mitosis is TWO cells with genetic material IDENTICAL to the parent cell.
Mitosis is a type of cell division by which a parent cell divides to produce two genetically identical daughter cells.
Conversely, meiosis is a type of reductional cell division that produces four daughter cells (gametes) from one parent cell. These cells have half of the genetic material as the original parent cell.
Mitosis divides into four stages: prophase, metaphase, anaphase and telophase.
In conclusion, the result when a single cell reproduces by mitosis is TWO cells with genetic material IDENTICAL to the parent cell.
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The_______system is the main transport system of the human body. it is made up of the heart,blood,and blood vessels namely_____________. _______________,And________________.These vessels bring oxygen-rich blood also.Called_____________ to the different tissues in the body and transport_____________from the tissues to the lungs,in a process called circulation
Answer:
The circulatory system is the main transport system of the human body. it is made up of the heart, blood, and blood vessels namely arteries , veins And capillaries .These vessels bring oxygen-rich blood also Called veins to the different tissues in the body and transport blood from the tissues to the lungs ,in a process called circulation
Explanation:
ABOUT CIRCULATORY SYSTEM -: Blood vessels that carry blood away from and into the heart make up the circulatory system. Blood is carried away from the heart by arteries, and blood is carried back to the heart by veins. Oxygen, nutrients, and hormones are carried to cells by the circulatory system and waste materials, such as carbon dioxide, are extracted.
THREE MAIN BLOOD VESSELS -:
ARTERIES -: The arteries (red) bring oxygen and nutrients to your body's tissues, away from your heart. The aorta, the large artery leaving the heart, begins with the arteries. They carry blood rich in oxygen away from the heart to all the tissues of the body. As they carry blood further from the heart, they branch several times, becoming smaller and smaller.VEINS -: The arteries (red) bring oxygen and nutrients to your body's tissues, away from your heart. These are vessels of the blood that carry back oxygen-poor blood to the heart. When they get closer to the heart, the veins get bigger and bigger. The superior vena cava is a large vein which carries blood from the head and arms into the heart, and the inferior vena cava carries blood from the abdomen and legs into the heart. CAPILLARIES -: Capillaries are small, thin blood vessels that connect the arteries and the veins. Their thin walls allow the passage of oxygen, nutrients , carbon dioxide and waste products from and to the tissue cells.BLOOD -: Blood circulates through the entire body through a network of vessels to provide oxygen and nutrients to individual cells and helps to dispose of metabolic waste. The blood around the blood vessels pumps the heart. Blood and circulatory processes circulate oxygen and extract carbon dioxide.
Which person participated mostly in the primary level of an economy?
A. A collage professor
B. A coal miner
C. A car mechanic
D. A car factory worker
Please help a girl out♀️
Answer:I know I’m to late, but the answer is B coal miner.
Explanation: I just took the test on apex
What is the main obstacle to cloning the woolly mammoth.
Answer:
A lack of suitable genetic material.
Explanation:
most of the DNA has been destroyed after being frozen for so long.
What was the independent variable in this experiment? Help
Answer:
The type of wire
Explanation:
The type of wire is the change in this experiment
Answer: type of wire
Explanation:
At 1,312 feet below sea level, the __________ is the lowest point on the Earth's surface.
A.
Dead Sea
B.
Rub al-Khali
C.
Dasht-e Kavir
D.
Red Sea
Please select the best answer from the choices provided.
A
B
C
D
Answer:
a.
Explanation:
Answer:
A the Dead sea
Explanation:
the dead sea is 1312 feet below the sea level and is the lowest point on Earth.
1. Name 3 examples of prokaryotes and 3 examples of eukaryotes. Explain how prokaryotes and eukaryotes are similar and different (name at least 2 similarities and 2 differences).
Answer:
Explanation:
Prokaryotes: Bacteria and cyanobacteria
eukaryotes: Animals and plants
Similarity: 1. They both contains ribosomes.
2.They both have cytoplasm and DNA
dissimilarity: 1. Double membranous organelles are absent in prokaryotes
2. The well defined nucleus absent in prokaryotes.
Which organelles allow plants to support heavy structures such as leaves and
flowers?
Answer:
central vacuole
Explanation:
In many plant cells there is a single large central vacuole filled with liquid, pressure of the central vacuole allows plants to support heavy structures such as leaves and flowers. pro here here :D
•What are flood plains, what do they do?
Answer:
Floodplains are dynamic natural systems. ... Floodplains provide a wide range of benefits to the ecosystem and community that include: Flood storage and erosion control–offer a broad area for streams and rivers to spread out and accommodate temporary storage of flood water, reducing flood peaks and erosion potential.
depending on their ______, stars can be one of four categories: white dwarf, main sequence, giants, or super giant
Answer:
pretty sure the answer is surface temp or mass
Explanation:
pls heart and mark brainliest much appreciated
Which organelle is used in making molecules of glucose in autotrophs?
A. nucleus
B. Golgi body
C. chloroplast
D. mitochondria
What is the source of the carbon dioxide that is used in photosynthesis?
sunlight
the soil
the atmosphere
the plant
Answer:
THE ATMOSPHERE
Explanation:
The atmosphere is the source of the carbon dioxide that is used in photosynthesis. Hence option c is correct.
What is photosynthesis?Photosynthesis is defined as the process through which green plants use energy from sunlight to transform carbon dioxide and water into food. It is a process that only happens in plants that contain the chlorophyll, a green pigment used in food preparation. Photosynthesis takes place in the chloroplast, a specialized intracellular organelle found in plants and algae, which emerged considerably later.
During photosynthesis, plants take up carbon dioxide (CO2) and water (H2O) from the soil and atmosphere. Plants take in carbon dioxide from the atmosphere as they photosynthesize. Plants can absorb the gas carbon dioxide from the air by way of microscopic holes in their leaves. Once they have carbon dioxide and water, they can use solar energy to create food.
Thus, the atmosphere is the source of the carbon dioxide that is used in photosynthesis. Hence option c is correct.
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2 points
What makes a water molecule polar?*
0 it has neutrons
oxygen has a stronger attraction for electrons than hydrogen
hydrogen has a greater pull on protons than oxygen
0 it has 3 atoms
Answer:
hydrogen has a greater pull on proteins than oxygen
Explanation:
Protons have positive electricity, electrons have negative electricity, and neutrons have no electricity
What is the best way to sample sessile organism with quadrats?
a) Cover the entire area with quadrats
b) Place one quadrat in the center of the area
c) Place quadrats in locations with the most interesting organisms
d) Randomly place quadrats in many locations as possible
Answer:d
Explanation: if you’re doing an experiment you Need multiple trials
The best way to sample sessile organism through the use of quadrats is to: d) Randomly place quadrats in many locations as possible.
Sampling can be defined as a statistical process that is typically used for collecting or selecting data (objects, observations, or living organisms) from a larger statistical population by using a specific procedure.
A quadrat can be defined as a rectangular or square plot that is used to randomly mark off (enclose) an area within a habitat, so as to isolate a sample and determine the percentage of species.
Basically, a quadrat is made of wire and it is usually used for:
Sampling sessile organisms (plants).Sampling slow moving animals such as snails, slugs, etc.In conclusion, the best way to sample sessile organism through the use of quadrats is by randomly placing quadrats in many locations as possible within a habitat.
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A flounder is a flattened fish that lives on the bottom of bodies of water, while
a tuna is a streamlined fish that swims in the open sea is an example of:
1. adapting to its environment
2. maintaining internal conditions, homeostasis
3. Obtaining and using energy
4. growth and development
5. reproduction
Answer:
1 adapting to its environment
Which of these would be considered an adaptation of an animal, that wolves'
prey upon, that lives in the snowy north pole?
1. Webbed feet
2. Long shear like beak
3. A thin coat of fur
4. Large, flat feet
Answer:
Explanation:
4
A process which is essential to the whole species but not to an individual
member of that species is:
1. Digestion
2. Growth
3. Reproduction
4. Development
Which organelle is used as temporary storage for water, waste products, food, and other cellular material?
mitochondrion
lysosome
centriole
vacuole
Answer:
d. vacuole
Explanation:
the vacuole stores water, waste, food, etc. and then releases it from the cell.
Organelles are present inside the cells of eukaryotic organisms. The vacuoles of the cells temporarily store water, wastes, food, and other material. Thus, option D is correct.
What is a vacuole?A vacuole is an organelle present in an animal and plant eukaryotic cell. Though they differ in size and number in both cells but have various functions important for the survival of the cell.
The vacuole of plant cells is large than the animal cell and stores the cellular substances, cell waste, and synthesized food particles. In plants, they maintain the water and osmotic balance.
They regulate the storage and transport of cellular materials, maintain turgor pressure, and control the localization of the proteins synthesized by translation.
Therefore, option D. vacuoles stores waste and food.
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Compare a daughter cell to the mother cell after interphase but before prophase step.
Answer:
Explanation:
This chart may help. The daughter cell will be an identical copy to that of the mother cell.
what would need to change in order for mars atmosphere to support human life?
Answer: successfully terraform Mars, the atmosphere would need to be raised enough so that humans could walk around without spacesuits. But although tripling the Red Planet's atmospheric pressure might sound like a lot.
Explanation: it's only one-fiftieth of the CO2 necessary to make the atmosphere habitable to Earth creatures.
18. Lab Summary - Explain how this experiment models a cell membrane. Use the
following terms in your explanation: selectively permeable, hypertonic, diffusion, indicator.
Answer:
Cell membrane is considered as boundary of the cell.
Explanation:
Cell membrane is the boundary of the cell which is selectively permeable that allows the micro-nutrients, water and gases like oxygen and carbondioxide etc through the process of diffusion. When the water goes inside due to diffusion it is the indicator that there is less quantity of water present inside the cell as compared to the external environment, this phenomena is called hypertonic.
There were dinosaurs that had feathers.
True
False
Answer:
true
Explanation:
Among the feathered dinosaurs discovered so far are Beipiaosaurus, Caudipteryx, Dilong, Microraptor, Protarcheopteryx, Shuvuuia, Sinornithosaurus, Sinosauropteryx, and Jinfengopteryx.
2.If the formula of an element is Y5, its atomicity is
a. 3 b. 2 c. 1 d. 5
answer is 3
answer is 3
A man walks 10 meters in 5 seconds, what is his speed?
Answer:
2m/s
avg. speed=10m5s=2m/s .
Explanation:
Lower air density means
oxygen molecules in each breath
Answer:
As air pressure decreases oxygen continues to account for about 21% of the gasses in the air as it does at sea level. But, there is less oxygen because there is less of all of the air's gasses