EXERCISE 1. Which blood vessel supplies the heart muscles with oxygen? ​

Answers

Answer 1

Answer:

Coronary arteries is the answer .

Answer 2
Coronary arteries supply blood to the heart muscle. Like all other tissues in the body, the heart muscle needs oxygen-rich blood to function.

Related Questions

plssss help!
based on patterns in the periodic table which element is the least malleable in its solid state
A.phosphorus (P)


B. strontium (Sr)

C. antimony (Sb)

D. copper (Cu)

Answers

Answer:

The metals having malleable property can be rolled or beaten into sheets.

Metallic bonds are very covalent that is, they share electrons among nuclei.

copper metal is a good conductor of electricity.

Pure Copper is soft, malleable and ductile.

i think so D.copper (Cu) is correct or more appropriate

Explanation:

The correct answer is option D. copper (Cu)

Malleability is the ability of metals to be hammered into sheets.

Metals are often required for different applications. The ability of metals to be hammered into sheets is called malleability.

Malleability of a metal is closely related to its density. The denser the metal, the less easily malleable it is.

Both copper and strontium are metals but copper is denser than strontium hence copper is less malleable than strontium.

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Fossil fuels can be burned to power vehicles like cars, but they can also be used to:
A. Jump start nuclear fission
B. Power solar cells
C. Generate electricity
D. Reduce pollution

Answers

Explanation:

Generate electricity Fossil fuels can be burned to power vehicles like cars, but they can also be used to:generate electricity

Answer:

C

Explanation:

used to produce electricity and they are also used to power engines.

biomolecules broken down into MONOMERS
(list 4)

Answers

Carbohydrates, lipids, proteins, and nucleic acids.

Photosynthesis is a/an process.
(a) Metabolic
(b) Catabolic
C) Anabolic
Chemical​

Answers

Answer:

[tex]anabolic \: process \: \\ because \: glucose \: and \: water \: is \: formed \\ thank \: you[/tex]

All living things have a molecule, called ______, which is essentially the "blueprint" or instructions for their existence.


Answers

Answer:

DNA

Explanation:

Will MARK BRAINLIEST!!!!! PLS HELP!!!!

Which step in cellular respiration produces the most ATP?(1 point)


Krebs cycle


glycolysis

electron transport chain

lactic acid fermentation

Answers

Answer:

it's Kerbs cycle which produces most ATP in cellular respiration

Answer:

The answer is electron transport chain

Explanation:

The stage that produces most of the ATP during cellular respiration is the electron transport system (ETS) present in mitochondria.

The formation of ATP occurs by oxidative phosphorylation. Theoretically, 34 ATPs are produced in the ETS by the complete oxidation of a glucose molecule. Electrons are transferred from NADH or FADH2 to O2 by a series of carriers and are coupled to ATP synthase for the formation of ATP.

Which of these are cellular activities that sustain a single-celled organism through its lifetime? Select all that apply. The transmission of DNA to offspring, Processes by which individuals produce offspring, Development into a multi-celled adult, Increases in cell size and volume

Answers

Explanation:

The transmission of DNA to offspring.

Processes by which individuals produce offspring.

Increases in cell size and volume

A single-celled or 'unicellular' microorganism is a microscopic organism composed of only one cell. Unicellular microorganisms asexually reproduce to produce offspring.

The cellular activities that sustain a single-celled organism through its lifetime include:The transmission of DNA to offspringProcesses by which individuals produce offspringIncreases in cell size and volume

Unicellular microorganisms include, among others, prokaryotic bacteria, unicellular fungi (e.g., yeast), and unicellular protists (e.g., Amoeba).

Reproduction refers to the process by which organisms transmit their genetic material (DNA) to offspring.

In unicellular organisms, the process of reproduction is asexual (without the involvement of gamete formation).

During their lifetime, unicellular organisms increase in size and volume to carry out their metabolic functions.

In conclusion, unicellular organisms share different cellular activities which include the transmission of DNA to offspring, processes by which individuals produce offspring and increase in cell size and volume.

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1.Why do scientists pick up ash and lava?
to be dangerous
to be cool
to study them
to clean up

Answers

Answer:

To study them.

Explanation:

They take ash and lava to study the chemicals and stuff that makes it up.

what hypothesis is being tested in this experiment?

Answers

Answer:

According to the web "

Hypothesis testing experiments

In hypothesis testing, an analyst tests a statistical sample, with the goal of providing evidence on the plausibility of the null hypothesis. Statistical analysts test a hypothesis by measuring and examining a random sample of the population being analyzed. ... However, one of the two hypotheses will always be true."

Brainiest plz

Which statement does not apply to the human egg

Cannot move on its own

produced at one at a time

contains enzymes to break down cell walls

contain’s food stores

Answers

Answer:

produced at one at a time.

Explanation:

human egg are not produced only at one time.

helllllppppppppppppp I WILL GIVE BRAINLIEST​

Answers

Explanation:

The bloodstream carries the glucose-a type of sugar produced from the digestion of carbohydrates and other foods-to provide energy to cells throughout the body. Unused glucose is stored mainly in the liver as glycogen.

Insulin, glucagon, and other hormone levels rise and fall to keep blood sugar in a normal range. Too little or too much of these hormones can cause blood sugar levels to fall too low (hypoglycemia) or rise too high (hyperglycemia).

Normally, blood glucose levels increase after you eat a meal. When blood sugar rises, cells in the pancreas release insulin, causing the body to absorb glucose from the blood and lowering the blood sugar level to normal. When blood sugar drops too low, the level of insulin declines and other cells in the pancreas release glucagon, which causes the liver to turn stored glycogen back into glucose and release it into the blood. This brings blood sugar levels to back up to normal.

Describe the structure and role of DNA in cells

Answers

DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Which phrase describes a protobiont?
brown goo
primordial soup
warm little pond
early life form

Answers

early life form is the one

Answer:

Its early life form. I got it right

Explanation:

what is the economic important of butterfly and sugar ant​

Answers

Explanation:

Butterflies are central pollinators to many agricultural crops, their ecological function is also a food source to predators like birds, spiders, lizards and other animals. Butterfly's beauty is like a flower, which displays attraction wherever it flies.

Sugar ants prefer honeydew from aphids and protect aphids from other predators to ensure the safety of their food source. These insects also feed on: Nectar and also Plant-eating invertebrates such as caterpillars.

The economic importance of butterfly and sugar ant are those qualities exhibited by these insects that can benefit or harm humans, domestic animals, and crops.

Butterfly is a typical example of a winged insects which is very important in its ecosystem.

The economic importance of butterfly includes:

They are plant pollinators.They provide population control for a number of plant and even insect species by eating them. They also serve as sustenance for other species.

The sugar ant is a typical example of a wingless insect that has the following economic importance.

they feed on nectar of plantsthey turn and aerate the soil, allowing water and oxygen to reach plant rootsthey feed on organic wastes thereby acting as decomposers.

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A DNA sequence reads: TACGATCATATT. Which of the following is the correct complementary DNA strand?
ATGCTAGTATAA
AUGCUAGUAUAA
CGTAGCTGCGCA
GCAUCGAGUAUA

Answers

TACGATCATATT is what you have.
ATGCTAGTATAA is what you’d get.
A matches with T, G matches with C, and the U would only come into play if you were translating out of the DNA sequence.

The complementary strand of a DNA sequence that reads TACGATCATATT is ATGCTAGTATAA.

Deoxyribonucleic acid (DNA) is made up of nucleotide subunits and functions in the storage of genetic information for living cells.

There are four nucleotides that constitutes the DNA molecule namely: Adenine (A), Thymine (T), Guanine (G) and Cytosine (C).

In a DNA molecule, adenine (A) base pairs Thymine (T) while Guanine (G) pairs Cytosine (C) i.e. A-T, G-C.

According to this question, a DNA molecule with the following sequence was given: TACGATCATATT. The complementary sequence of this DNA strand is ATGCTAGTATAA.

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Question 19 6f 25
H is a(n) ______
of hydrogen.
Answer here?

Answers

Answer:

Symbol

I hope it's helps you

What is the summer sleep of frog called??​

Answers

Answer:

answer is aestivation

Explanation:

Love ya bye!

(Physical Science)

A ball and stick model of a molecule of formaldehyde, CH2O, is made from the following components:
-one black ball
-one red ball
-two white balls
-three sticks

What do the sticks represent?
A. oxygen atoms
B. hydrogen atoms
C. carbon atoms
D. bonds between atoms​

Answers

Answer:

option D is the correct answer

Answer:

D

Explanation:

write down the distinguish chracteristics
of five kingdom classification

Answers

Answer:

Monera, Protista, Fungi, Plantae and Animalia. The organisms which are placed under the kingdom Animalia are heterotrophic and depend on the other organisms for food .

Explanation:

hope this helps :)

1- a virus goes through stages of growth and development

True or false?

2- a virus is made of a single cell similar to a bacterium
True or false?

Answers

Answer:

1. A virus goes through stages of growth and development - False

2. A virus is made of a single cell similar to a bacterium - True

Correct answer:

1. A virus does not go through stages of growth and development

                                Thank You

                       Please mark me brainliest.

Can someone please do my biology on acellus. I can’t understand it.

Answers

Ya what is your question

Some antibiotics can harm a cell's ribosomes. Which of the following would you predict to be the most likely long-term effect of damage to ribosomes?

Errors would be made during DNA replication, resulting in mutations and defects in the cell.
Proteins would not be modified after being synthesized, so they would not function properly.
The cell would not be able to create the proteins needed for important functions and growth.
Waste products would not be broken down and disposed of properly, causing the cell to die.

Answers

Answer:

These five major trends pose a major global threat to the planet

Explanation:

These five major trends pose a major global threat to the planet. If the world is to maintain the habitat of humans and other species. These environmental problems must be resolve. DW discussed the reasons and possible solutions.

Air pollution and climate change

Problems

Carbon overload in the atmosphere and seawater. The CO2 in the atmosphere absorbs and re-emits infrared wavelength radiation. Which causes the air, soil, and ocean surface water to warm. Which is a good thing without this, the earth would freeze. Unfortunately, there is too much carbon in the air now.

The burning of fossil fuels, agricultural deforestation, and industrial activities have increased the concentration of carbon dioxide in the atmosphere from 280 parts per million (ppm) 200 years ago to about 400 pm today. Whether it is scale or speed, this is unprecedented growth. The result: a change in the climate.

Carbon overload is just one form of air pollution caused by burning coal, oil, natural gas, and wood. The World Health Organization recently estimate that one in nine deaths in 2012 were caused by diseases caused by carcinogens and other poisons in the polluted air.

Solution:

Replace fossil fuels with renewable energy. Forest restoration. Reduce agricultural emissions. Changing industrial processes, The good news is that clean energy is abundant, but it needs to be harvest.

Many people say that it is feasible to use existing technologies to achieve a 100% renewable energy future, but the bad news is that even though renewable energy infrastructure (solar panels, wind turbines, energy storage, and power distribution systems) are widely available and Become cheaper and more efficient.

Experts have always said that our applications are not fast enough to avoid catastrophic climate damage.

Deforestation

Problem

Species-rich wild forests are destroye, especially in tropical areas. Usually to make way for cattle farms, soybean or palm oil plantations, or other monocultures. Today, about 30% of the earth’s land area covers by forests.

This is about half of what it was before agriculture started about 11,000 years ago. Approximately 7.3 million hectares (18 million acres) of forest are destroyed every year, mainly in the tropics. Therefore Tropical forests used to account for about 15% of the earth’s land surface; now they have fallen to 6% or 7%.

Solution

Most of the remainder has degraded by logging or burning. Natural forests are not only a reservoir of biodiversity but also a carbon sink. Excluding carbon from the atmosphere and ocean.

Therefore Restore degraded areas by replanting native tree species. This requires strong governance. But many tropical countries are still developing, their populations are growing. So that The rule of law is unbalanced, and cronyism and bribery are common in allocating land use.

S

The area underground that is saturated with water is known as the
to

A. cryosphere
B. hydrothermal vent
C. watershed


D. water table

Answers

Answer:

D

Explanation:

D. Water table

I think it is correct ☺️

D is the answer! Hope that worked for you

Describe different types of mutations

Answers

Answer:

A base is inserted into one strand of the DNA

Answer:

hope this helps if helps mark me brainliest

Explanation:

There are three types of DNA Mutations: base substitutions, deletions and insertions. Single base substitutions are called point mutations, recall the point mutation Glu -----> Val which causes sickle-cell disease. Point mutations are the most common type of mutation and there are two types.

What molecule is our Genetic Code made of?

Answers

Explanation:

deoxyribonucleic acid (DNA)

A patient breaks a leg. Predict which model a doctor will use to show where the break is. (1 point)

a real human
a 2D image
a fetal pig
a detailed drawing the doctor makes during the visit

Answers

Answer:

D. a detail drawing the doctor makes during the visit

The model the doctor will use to show the break is ( B ) : A 2D image

To detect fractures and dislocation in patients, doctors try to depict,2D projection of the area of interest in the patients in order to determine the exact location of the break. and there are several ways in which the doctor can  perform this but one of the ways is using

X-rays machines

X-rays are the most common 2D projections in radiography that can be used to detect a point of fracture or dislocation in a patient .

Hence the correct option is a 2D image that can be taken using an X-ray machine

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CO2 is obtained from the ____ and the water is from the ___ of the plant?

Answers

Answer:

water is from the stomata of the plant.

What can oil be turned into that we used everyday?

question source: "Fossil Fuels: What is it and where did it come from?"

Answers

Answer:

lots of things !

Explanation:

Oil and natural gas are used in everyday products such as lipstick and deodorant and life-saving medical devices, such as MRI machines and pacemakers. Byproducts from oil refining is used to produce plastics, as well as lubricants, waxes, tars and even asphalt for our roads.

Pls help me with this question:) (I took a picture of the questions)

Answers

3. Carbon is waste inside the cell and must be removed from cell (im not entirely sure if thats the right one tho :) )

Which point is on the interior of ZBAC?
D
B
O point D
Opoint A
E
A
Opoint C
point B

Answers

Answer:

Point D.

Explanation:

A shape's internal angle is referred to as an interior angle. An external angle is any angle that is outside of a form.

What is Interior angle?

One of the shape's lines is extended past the intersection point to create an external angle. Two angles combine to form a straight line.

This is significant because it indicates that, given the measurement of the other angle, we can always obtain the measure of the missing angle because we know that a straight line measures 180.

For instance, the rhombus below only provides us with an outside angle measurement. An interior angle is any angle that is located within of a form. An external angle is any angle that is outside of a form. One of the shape's lines is extended past the intersection point to create an external angle.

Therefore, A shape's internal angle is referred to as an interior angle. An external angle is any angle that is outside of a form.

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