Answer:
Carotid arteries also branch off the aortic arches and supply the head region. Veins bring blood to the left and right atria. Both atria then empty into the single ventricle. Blood from the ventricle thus enters either the pulmonary or body circulation.
Explanation:
OP.7
1. What are three main parts that make up a nucleotide
Answer:
A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base. The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T).
which factor can decrease the rate of a chemical reaction
Answer:
catalysts can decrease the rate of chemical reaction
Answer:
Temperature
Explanation:
Which of the following is not an example of a mutagen?
1. X-ray
2. Cosmic rays
3. Shadow blow with a fist
4. Pesticides
Answer: 3
Explanation:
Which process puts carbon into the ground?
O coal burning power plant
O volcano eruption
O decaying plants and animals
O animal respiration
Can you explain the relationship between EPSP, IPSP and action potentials?
Answer:
EPSP and IPSP trigger action potential
Explanation:
“EPSP” means “excitatory postsynaptic potential” which occurs when +ively charged ions move towards the postsynaptic cell thereby depolarizing of postsynaptic membrane potential. IPSPs are inhibitory postsynaptic potential. Whenever the EPSPs or IPSPs changes, the , neurotransmitters bind to receptors thereby opening or closing ion channels in the postsynaptic cell and hence triggering the Action potentials which is basically nerve impulses or spikes.
Mushrooms are usually considered part of the microbial world because their fungal hyphae are microscopic. Some mushrooms have a fruiting body known as a ___ that is visible to the naked eye above ground.
Answer:
Basidiocarp
Explanation:
This is a multicellular structure found in mushroom that are visible to the naked eye and are spore producing. They are the structures of which spore producing basidia are formed. They called called false ruffles. The basidiocarps serve as the structure on which the hymenium is produced. They are the fruiting bodies of mushroom.
1. What is the primary(#1) agent of erosion?
1)wind
2)running water
3)glaciers
4)gravity
Answer:
Running water.
Explanation:
running water causes the most erosion.
4. Choose the correct answer.
What are human body tissues?
made of organs and organ systems
created by humans for the support of the most basic needs
made of elements that cannot be broken down by simple means
large groups of the same type of cell, all working together for one purpose
most basic part of the human body
5. Check Two that apply.
00:40:46
Answer:
Large groups of the same type of cell, all working together for one purpose.
Explanation:
Human tissues are the group of cells that work together to perform a specific function. In tissues, similar type of cells combine together for performing similar function. The cells in tissue are same type means same size and structure. When a group of tissue combine together, it forms organ. These tissue can be broken down into simpler substances which are the cells that are considered as the basic unit of life.
When does the first quarter phase of the moon occur?
a. two weeks after the new moon phase
b. three weeks after the new moon phase
c. two weeks after the third quarter phase
i think this will help you
Which of these are large grazers in the tundra? (Select all that apply.)
muskox
caribou
reindeer
antelope
( science but I couldn’t find the subject )
Answer:
caribou!!
Explanation:
An environmental change is occurring due to continents shifting and moving to different parts of Earth’s surface. What kind of change is this?
a short-term change due to tectonic plate movement
a long-term change due to tectonic plate movement
a short-term change due to increasing levels of solar energy
a long-term change due to increasing levels of solar energy
Answer: B
Explanation:
Answer:
B.
Explanation:
When beach erosion occurs you have several events that take place depending on what environmental elements are involved .What elements is most influential when it comes to abrasion ?
A:Wind
B:Snow
C:Hail
D:Lithium
Greenhouse gases are
decreasing due to human activity
Increasing due to human activity
increasing due to natural events
decreasing due to natural events
Answer:
Increasing due to Human Activity
Explanation:
Over the past 150 years, Greenhouse gasses are the main cause in human activity In Fact
10% for Agriculture 13% Commercial and Residence 23% from Industries25% from Electricity 29% Transportation.4. What are carbon dioxide levels now? How often in the past 650,000 years have they been that high?
short answer please:)
Answer:
Explanation:
Scientists at the Mauna Loa observatory in Hawaii say that CO2 levels in the atmosphere now stand at 387 parts per million (ppm), up almost 40% since the industrial revolution and the highest for at least the last 650,000 years.
Plant >Mouse > Snake Hawk
Based on the food chain shown above, energy in this ecosystem flows from
A. the snake to the mouse.
В. the hawk to the snake.
C. the mouse to the plant.
D. the mouse to the snake.
Answer:
D) The mouse to the snake
Explanation:
Answer:
The answer is D
Explanation:
What is the difference between a mutation and a mutagen
mitchondria DNA on hair allows us to look at which side of the parents DNA?
A. Mom
B. Dad
C. Neither
D. Both
Answer:
The answer is A
Explanation:
These organelles, found in all eukaryotic cells, are the powerhouse of the cell. The mitochondria, and thus mitochondrial DNA, are passed exclusively from mother to offspring through the egg cell.
Question 3
Q: Which of the following is digested quickly in the body?
A. O Collagen
B. O Protein
c. O Monosacharide
D. O Unsaturated fat
Answer:
B. Protein
Explanation:
Protein is digested quickly in the body. Hence the correct option is A.
Define protein?A protein is defined as a naturally occurring, extremely complex substance which consists of amino acid residues fused by peptide bonds. Proteins are found in all living organisms and include many essential biological compounds such as enzymes, hormones, and antibodies.
Protein breakdown occur faster than fats and protein occurs mostly in the stomach, where stomach acids uncoil the protein strands. Pepsin, an enzyme secreted by the stomach, breaks the strands down further.
Trypsin, another enzyme, break down the protein strands into molecules containing one, two or three amino acids in the small intestine. Nearly all the protein in foods is digested, with the remaining passes through the large intestine.
For more information regarding proteins, visit:
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Which of the following best explains why the polymerase from the species T. aquaticus is often used for PCR?
Answer:
B) T. Aquaticus polymerase does not denature at high temperatures.
Explanation:
i did it
Which would BEST be separated by a distillation apparatus and not by filtration?
A) smoke in air
B) sand in water
C) water and oil
D) Kool Aid powder mixed in water
Madelyn was to identify cells as plant or animal. How can she pinpoint which are plant cells?
Plant cells have a rectangular shape and a cell wall, while animal cells have a circular shape and no cell wall
a. nuclear energy
b. geothermal energy
c. fossil fuels
Answer:
c
Explanation:
Answer: Fossil Feuls
Explanation:
Coal, oil, and natural gas are fossil fuels that are energy that were produced from the remain of organisms that lived millions of years ago.
Imagine that a friend read this same article and summarized it by saying, "Because there are more
plants now, the amount of carbon dioxide in the atmosphere is decreasing." What is incorrect about
your friend's assessment?
Answer:
The amount of carbon dioxide in the atmosphere is increasing, not decreasing. However, it is not increasing as fast as scientists predicted it would, which they attribute to the amount of carbon dioxide absorbed by plants.
Explanation:
From plato
Sam drives an excavator at an open surface strip coal mine. Which type of coal is he most likely to collect closest to the surface?
A. anthracite
B. subbituminous
C. Ilgnite
D. bituminous
E. pitchblende
Explanation:
The right option should be c (lignite )
1. Where is Earth’s water located? How much is freshwater?
2.What drives the watercycle?
3.Where are the world’s major oceans? Which ocean do we live closestto?
4.Why do we know relatively little about the bottom of the ocean? What does the ocean floor look like? (think: major features)
5.Why do we have ocean currents? How do currents affectclimate?
6.What causes ocean waves
Answer: 1. Water covers about 71% of the earth's surface. 97% of the earth's water is found in the oceans (too salty for drinking, growing crops, and most industrial uses except cooling). 3% of the earth's water is fresh. Only about three percent of Earth's water is freshwater. Of that, only about 1.2 percent can be used as drinking water; the rest is locked up in glaciers, ice caps, and permafrost, or buried deep in the ground. Most of our drinking water comes from rivers and streams. Earth's water is (almost) everywhere: above the Earth in the air and clouds, on the surface of the Earth in rivers, oceans, ice, plants, in living organisms, and inside the Earth in the top few miles of the ground. 2.The sun, which drives the water cycle, heats water in the oceans. Some of it evaporates as vapor into the air. Ice and snow can sublimate directly into water vapor. ... The vapor rises into the air where cooler temperatures cause it to condense into clouds. 3. Historically, there are four named ocean basins: the Atlantic, Pacific, Indian, and Arctic. However, most countries - including the United States - now recognize the Southern (Antarctic) as the fifth ocean basin. The Pacific, Atlantic, and Indian are the most commonly known. Atlantic Ocean, body of salt water covering approximately one-fifth of Earth's surface and separating the continents of Europe and Africa to the east from those of North and South America to the west. 4. Marine creatures in shallower waters provide nutrients to deep-sea environments, as dead organisms “rain down” to the bottom. Fewer organisms in shallow waters means less food at the bottom. Features of the ocean include the continental shelf, slope, and rise. The ocean floor is called the abyssal plain. Below the ocean floor, there are a few small deeper areas called ocean trenches. Features rising up from the ocean floor include seamounts, volcanic islands and the mid-oceanic ridges and rises. 5. Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms. ... These currents move water masses through the deep ocean—taking nutrients, oxygen, and heat with them. By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life. They carry nutrients and food to organisms that live permanently attached in one place, and carry reproductive cells and ocean life to new places. Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface. Some currents flow for short distances; others cross entire ocean basins and even circle the globe. By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life. 6. Waves are most commonly caused by wind. Wind-driven waves, or surface waves, are created by the friction between wind and surface water. As wind blows across the surface of the ocean or a lake, the continual disturbance creates a wave crest. ... The gravitational pull of the sun and moon on the earth also causes waves. Ocean waves are caused by wind moving across the surface of the water. The friction between the air molecules and the water molecules causes energy to be transferred from the wind to the water. This causes waves to form. brainliest??
Explanation:
can someone do my last question its biology
Answer:
a
Explanation:
they drop leaves and almost hibernate for the winter, like some animals!
Answer:
I would say B cause when it's cold leafs fall off
PLZ, I NEED HELP NOW!
If the statement is false what is the correct word for the capitalized word, if true just say true.
1) Dna is found in a cell's MEMBRANE
2) Identical twins have DIFFERENT DNA
3) GENES are sections of dna that code for certain traits
4) CHROMOSOMES are long strands of dna
5) Dna is SINGLE-STRANDED
6) Clones contain the same GENETIC MATERIAL
7) Nearly every cell in your body has a COMPLETE SET of dna
Answer:
1) False
2) False
3) True
4) True
5) False
6) True
7) False
Explanation:
I think these are all correct! Can you please give me a brainly? Have an amazing day/night!!
describe what happens to nutrients and matter in a biogeochemical cycle
Answer: Nutrients move through the ecosystem in biogeochemical cycles. A biogeochemical cycle is a circuit/pathway by which a chemical element moves through the biotic and the abiotic factors of an ecosystem. It is inclusive of the biotic factors, or living organisms, rocks, air, water, and chemicals. Energy flows through an ecosystem and is dissipated as heat, but chemical elements are recycled. The ways in which an element—or compound such as water—moves between its various living and nonliving forms and locations in the biosphere is called a biogeochemical cycle.
Explanation:
Nutrients and matter in a biogeochemical cycle move through various spheres including the atmosphere, biosphere, hydrosphere and lithosphere.
Nutrients move through the ecosystem in the nutrient cycle or biogeochemical cycles. This cycle is a pathway by which a chemical element moves or recycles through the biotic and abiotic factors of an ecosystem.
It is inclusive of the biotic factors, or living organisms such as plants animals, and others, as well as abiotic or nonliving such as air, soil, and water.it moves through abiotic and biotic elements such as water moves through water body to the atmosphere by evaporation and moves back to earth and hydrosphere by rain and also used by living organisms.Thus, Nutrients and matter in a biogeochemical cycle move through various spheres including the atmosphere, biosphere, hydrosphere and lithosphere.
Learn more about the biosphere:
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The force of gravity on an object is constant all over the earth.
True
False
Answer:
true
Explanation:
gravity has hold of alot of things
If a group of friends visit the St. Louis Arch. Would they weight more at the top of the arch, or at the bottom?
BOTTOM
or
TOP
Answer:
bottom
Explanation: