Which of the following blood vessel carries impure blood from heart to
lungs for purification? *
Pulmonary vein
Pulmonary artery
Capillaries
None of them
Other:
Answers
Answer:
The pulmonary artery carries deoxygenated blood to the lungs. The blood becomes oxygenated in the lungs. Oxygenated blood leaves the lung via the pulmonary vein. Blood enters the left atrium.
Explanation:
Answer:
Pulmonary Artery
Explanation:
Related Questions
Fill in the blanks
Human activities have altered many natural environments by _____. Many lands are now fields where only one from farm crop is grown, an example of a (n) ____.
Other human activities had added many ____ to the atmosphere some of which cause an ugly Haze called _____ or damage the protective ____. A consequence of global transportation has been the spread of _____ that outcompete or prey on native species.
Use these to fill in the blank:
Monoculture
Invasive species
Pollutants
Ozone layer
Smog
Deforestation
Answers
Answer:
1st line:Deforestation
2nd line:monoculture
3rd line:pollutants
4th line:Smog
5th line:Ozone layer
6th line:invasive species
All in that order for each line.
Answer:
1st line:Deforestation
2nd line:monoculture
3rd line:pollutants
4th line:Smog
5th line:Ozone layer
6th line:invasive species
All in that order for each line.
Explanation:
Which two cell types in placozoans make up the endoderm tissue layer?
A)cover cells and cylinder cells
B)gland cells and cover cells
C)fiber cells and cover cells
D)gland cells and cylinder cells
Answers
Answer:
D
Explanation:
I made a 100 on the text
Two cell types in placozoans make up the endoderm tissue layer are - D) gland cells and cylinder cells.
The Placozoa a marine free-living multicellular basal form of organism. These are condisered as the simplest structure of all animals.
It has three genera namely Trichoplax adhaerens, Hoilungia hongkongensis, and Polyplacotoma mediterranea.It has three tissue layers that are ectoderm, endoderm and mesoderm.The ectoderm are formed of cover cells.The bottom layer is made up of cylinder cells that has cilia used in locomotion, and gland cells that lack cilia.Thus, two cell types in placozoans make up the endoderm tissue layer are - D) gland cells and cylinder cells.
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what is this pls help these are finals
Answers
Answer:
wowzerrrrrrs
Explanation:
What makes something a compound microscope
Answers
Answer:
A compound microscope is an upright microscope that uses two sets of lenses (a compound lens system) to obtain higher magnification than a stereo microscope. A compound microscope provides a two-dimensional image, while a stereo microscope provides a three-dimensional image.
Explanation:
ASAP?!!!!!!!!!!!!
IMAGE IS ATTACHED
What is the genotype ratio for this cross?
What is the phenotype ratio for this cross?
Answers
Answer:
If I'm not mistaken, the genotype ratio should be 1:2:1 and the phenotype ratio should be 3:1
Explanation:
Genotypic Ratios and Phenotypic Ratios for Punnett Squares on Y*uT*be
A scientist is studying a radioactive element that has a half-life of 63 years. Choose the correct answers from the drop-down menus to complete each statement about the element.
It will take
blank
years for half of the sample to decay.
In 189 years, blank
of the sample will be left.
Scientists can figure out how old a sample is by multiplying the blank
by the length of the half-life.
Answers
Answer:
It will take 63 years
In 189 years, one-eight of the sample will be left
By multiplying the number of half-life cycles
Explanation:
I just completed this assignment.
A scientist is studying a radioactive element that has a half-life of 63 years. It will take 63 years, In 189 years, one-eight of the sample will be left.
what is the meaning of half life ?A radioactive element is defined as the material when it changes its atomic number or weight by emitting energy, the energy may be either Alpha, beta, or gamma forms of radiation.
Alpha is a Helium nucleus, a beta particle is an electron and a gamma is high energy electromagnetic radiation. Half-Life can be defined as the time required by which the radioactive substance to split into a different substance.
The half life was first discovered by Ernest Rutherford and represented by the Ug or t1/2, If the radioactive element has one-hour of half-life, it means one half of the element would decay within an hour and the remaining part would decay in another hour.
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Which of these groups contains single-celled organisms?
A. birds
В. plants
C. fungus
D. animals
Answers
Answer:
C. Fungus
Explanation:
The fungi kingdom includes both single cell and multicellular organisms. Single cell organisms in the fungi kingdom include yeasts and chytrids, or fossilized fungi. Most organisms within the plant and animal kingdoms are multicellular. The Largest Single-Celled Organism.
hope i helped
Answer:
C. fungus
Explanation:
Birds and animals are in the same category, and both have multiple cells.
Plants also have multiply cells.
And fungus can be single celled or multiple cells.
Hope this helps ya!!
At what stage of the cycle does the cell copy its DNA?
Answers
Answer:
S-Phase
Explanation:
During the S-Phase, the cell replicates its DNA. Interphase is then followed by Mitosis. Mitosis is when the cell separates its two sets of DNA and divides it into two more cells.
What is the difference between prokaryotic and eukaryotic cells?
Answers
The main difference that separates prokariotic organisms from eukaryotic organisms is the organisation of the genetic material. Prokaryotes have a single chromosome that isn't separated by a membrane and it's called nucleoid. Eukaryotes have multiple chromosomes that are inclosed in a nuclear envelope(nucleus).
The only organelles present in prokaryotic cells are the ribosomes(70S) which differ from the eukaryotic ribosomes(80S). Eukaryotic cells have membrane bound organelles like the mitochondrion or Golgi aparatus.
looking at the animal cell diagram above, identify the organelle(s) involved in the process of building proteins
Answers
Answer:
I dont see any diagram but in general, the organelles are the nucleus, ribosomes, ER, golgi apparatus, and vesicles
Explanation:
The nucleus contains the genetic code and creates the "orders" for the ribosomes
The ribosomes synthesize the proteins
The (rough) endoplasmic reticulum contain ribosomes
The golgi apparatus and vesicles transport and modify proteins
CELLULAR RESPIRATION!!!
Explain what cellular respiration is using the vocabulary words: cellular respiration, energy, matter, and chemical reaction. Make sure to describe how the cell gets the matter and energy needed.
Answers
Outputs of photosynthesis
Answers
Answer: carbon dioxide, water molecules, glucose, and oxygen
Explanation: Energy is used to convert carbon dioxide into oxygen and glucose.
Albino individuals lack all pigmentation so that their hair and skin are white. The
transmission of Albinism is shown on the pedigree below.
According to the pedigree, what is the mode of inheritance for this condition?
Answers
Can I get brainliest :>?
PLZ HELP ASAP WILL GIVE BRAINLIST!
Pick all the differences between prokaryotic (bacteria) and eukaryotic (animals,
plants, fungi) cells.
Prokaryotic cells do NOT have membrane bound organelles.
Eukaryotic cells do NOT have membrane bound organelles.
Prokaryotic cells do NOT have a nucleus.
Eukaryotic cells do NOT have a nucleus.
Answers
Answer:
Prokaryotes are organisms that consist of a single prokaryotic cell. Eukaryotic cells are found in plants, animals, fungi, and protists. They range from 10–100 μm in diameter, and their DNA is contained within a membrane-bound nucleus. Eukaryotes are organisms containing eukaryotic cells.
Explanation:
Answer: B
Explanation:
which of the following cells shows the process of a nucleus? a. prokaryotic b. eukaryotic c. both
Answers
Answer:
b. eukaryotic
Explanation:
"Eukaryotic" means to have a nucleus.Which human body system performs a function similar to that of the vascular
system of a plant?
Answers
Why codon in the sickle cell DNA is altered ?
Answers
Answer:
A missense mutation changes a codon so that different protien is created, a non-synonymous change
Explanation:
Sickle-cell disease is caused by a single point mutation in the beta hemoglobin gene that converts a GAG codon into GUG
Explain how parents that do not have a trait can have a child that has the trait
Answers
Answer:
their environment
Explanation:
A child's environment has one of the biggest effects developmentally. Meaning friends, school, location.
The measure of chemical energy in cells and in food the energy available from high energy bonds in organic molecules
Answers
Answer: Cellular respiration
Explanation:
Messenger RNA carries a(n) ___________ of the DNA’s instructions out of the nucleus to the ___________.
Answers
Answer:
transcript and ribosome
Explanation:
I know this for sure
Sound waves are waves that require particles to vibrate, Sound waves
cannot
a.travel around corners
b.move through solids
c.be heard underwater
d.transmit through empty space
hodieram
Answers
Answer:
d. there's nothing for Soundwave to bounce off of I believe
Who is the inventor of the modern classification system?
Answers
Answer:
Carolus Linnaeus
Explanation:
Answer:
Carolus Linnaeus
Explanation:
What happens if oranisms fall to adjust and respond to changes in their environment?
Answers
Answer:
they would probably go extinct
Explanation:
Which of the following problems are environmental indicators of acid deposition?
Decreased pH levels in lakes and rivers
Decreased concentration of aluminum in the soil
Changes in development of indicator organisms of an ecosystem
II only
III only
I and III
I and II
Answers
Answer:
I and III
Explanation:
Acid deposition will decrease pH levels in lakes and rivers since it contaminates them and lowers their pH, and organisms may be affected by the increased acidity in their immediate surroundings, but aluminum has nothing to do with pH levels at all.
Hope thish elped!
Option I and III shows the problems of environmental indicators of acid deposition.
The following information should be considered:
The acid deposition should reduce the level of pH in terms of lakes and rivers as it contaminates also the organisms should impact when the acidity should be increased for the surroundings. But the aluminum does not have any relationship with pH levels.Therefore we can conclude that options I and III are correct.
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Write a summary statement for saturated fats including whether they are solids or liquids at room temperature and weather they have all single carbon-to-carbon or at least one carbon-to-carbon bond
Answers
Answer:
A saturated fat is a type of fat in which the fatty acid chains have all or predominantly single bonds. A fat is made of two kinds of smaller molecules: glycerol and fatty acids. Fats are made of long chains of carbon atoms. Some carbon atoms are linked by single bonds and others are linked by double bonds. Double bonds can react with hydrogen to form single bonds. They are called saturated because the second bond is broken and each half of the bond is attached to a hydrogen atom.
Explanation:
Answer:
saturated fats consists of single covalent bond and they are solid at room temperature and their melting point increases with increasing chain length
hope it helps
Explanation:
what are the inputs and outputs of the reaction
Answers
Answer:
The inputs are carbon dioxide from the air and the ATP and NADPH produced by the light reactions. The cycle's output is an energy-rich sugar molecule. The Calvin cycle uses carbon from the carbon dioxide, energy from the ATP, and high-energy electrons and hydrogen ions from the NADPH.
Explanation:
The light reactions, which occur during photosynthesis, have specific inputs and outputs. The inputs of the light reactions include light energy and water. The outputs of the light reactions are ATP (adenosine triphosphate), NADPH (nicotinamide adenine dinucleotide phosphate), and molecular oxygen.
Light energy is absorbed by the chlorophyll pigments in the thylakoid membranes, while water molecules serve as a source of electrons for the photosynthetic electron transport chain.
ATP is a high-energy molecule that serves as the primary energy source for cellular processes. NADPH is a coenzyme that carries energized electrons and plays a role in the synthesis of carbohydrates during the subsequent dark reactions of photosynthesis. Molecular oxygen is a byproduct of light reactions and is released into the atmosphere as a waste product. Together, these outputs provide the energy and reduce the power needed for the synthesis of organic molecules during photosynthesis.
Therefore, the inputs of the light reactions include light energy and water. The outputs of the light reactions are ATP (adenosine triphosphate), NADPH (nicotinamide adenine dinucleotide phosphate), and molecular oxygen.
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Cells reproduce by splitting in half a process called cell division what do you cells need between divisions to make sure that they don’t get smaller and smaller
Answers
What is a natural source of CO2
Answers
Answer:
venting volcanoes
Explanation:
Why must an organism be able to adjust to changing environments?
Answers
Answer:
blabkkbkkbcqcwwcqwqwwq
Explanation:
The arrow in a chemical equation represents the ________________ _________________
Answers
Answer:The subscript
Explanation: