what do you mean by blood circulation
Answers
The circulation of blood refers to its continual flow from the heart, through branching arteries, to reach and traverse the microscopic vessels in all parts of the body, reconverging in the veins and returning to the heart, to flow thence through the lungs and back to the heart to start the circuit.
Related Questions
1. Animals can face many problems caused by light pollution. Which is NOT one of these
problems?
a. Increased predation
b. Decreased amount of food
c. Disorientation
d. Disrupted breeding times
Answers
Answer:
Light pollution does not affect predation levels, so the correct answer is A
Explanation:
Increase predation is one of them which is not affected by Light pollution.
What is light pollution?Artificial illumination that is undesirable, improper, or excessive is referred to as light pollution.Light pollution, also known as artificial light at night, is the excessive or inefficient use of artificial outdoor light that disturbs wildlife's normal routines, adds to the buildup of carbon dioxide (CO2) in the atmosphere, interrupts human sleep, and obscures the night sky's stars.What is predation?One creature kills and eats another in predation. Predation offers energy to the creature that kills, the predator, in order to prolong its life and encourage reproduction at the expense of the organism that is eaten, the prey. Predation has an ecological impact on species on two levels.Hence, the correct option is A.
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What does evolution describe
Answers
Answer:
any process of formation or growth; development: the evolution of a language; the evolution of the airplane. a product of such development; something evolved: The exploration of space is the evolution of decades of research
Explanation:
Answer:
The process of development in which an organ or organism becomes more and more complex by the differentiation of its parts; a continuous and progressive change according to certain laws and by means of resident forces.
How does mitosis differ from meiosis? A. Mitosis makes gametes, meiosis makes body cells B. Meiosis makes haploid cells, mitosis makes diploid cells C. Mitosis requires cytokinesis, meiosis does not D. Mitosis makes gametes and meiosis makes zygotes
Answers
Answer:
B
Explanation:
Mitosis carries out the process of asexual reproduction, produces two identical daughter cells and forms diploid cells. Meiosis carries out the process of sexual reproduction, forms four different daughter cells and makes haploid cells.
The __________ molecule is known as the universal energy source of the cell. *
1 point
Captionless Image
AMP
ATP
GTP
NADH
Answers
Answer:
The answer is ATP, however, NADH is part of what goes into producing ATP.
Happy holidays!
What structure do white blood cells use to engulf bacteria when they do phagocytosis?
A. cilia
B. flagella
C. pseudopod
D. oral cavity
Answers
The engulfed object is thus enclosed within a membrane-bound vacuole called a phagosome. The phagocyte digests the ingested particle with hydrolytic enzymes, which are contained within membrane-enclosed sacs called lysosomes found within the cell.
5. Studying light from a star allows us to… a. determine a star's temperature b. determine what elements the star is made of c. determine how a star is moving (toward, away, fast, slow) d. all of these e. none of these
Answers
Answer:
The correct answer is option C "determine how a star is moving (toward, away, fast, slow)"
Explanation:
All realized components emanate and assimilate specific frequencies of light, which is important for the electromagnetic range. By considering the frequencies of light (as demonstrated by 'lines' inside the electromagnetic range) discharged by an object in space, astronomers can get a scope of information.
One thing they look at is the adjustment in situation of lines in the range from a star this can tell astronomers the distance away the star is, regardless of whether it is moving towards or away from us and how quick it is moving.
Which substance increases its volume when it becomes a solid?
A. Mercury
B. Water
C. Salt
Answers
Answer:
B
Explanation:
when water is frozen, it expands, something to do with anomolous expansion of water.
Water increases its volume when it becomes a solid.
Define volume and its units?Volume is a measure of occupied three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.
The surface-area-to-volume ratio, also called the surface-to-volume ratio and variously denoted sa/vol or SA:V, is the amount of surface area per unit volume of an object or collection of objects.
If volume is the amount of 3-D space contained by a closed surface (e.g. the amount of space within a given cube, or cylinder, or any other 3-D shape), liquid volume is a way to measure an amount of liquid by describing it how much 3-D space it occupies.
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Neurogenesis is especially evident in brain areas related to learning and memory. Based on this statement, you might expect neurogenesis to be particularly prevalent in the brain's:
Answers
Cortex, especially neo-cortex and pre frontal cortex. Where neuroplasticity can occur.
A scientists examines eukaryotic and prokaryotic cells using a microscope. Which structure would the scientist observe in only the prokaryotic cells?
Answers
Hope this helps
Pls help I’m so confused :(
Answers
Answer:
Left is synthesis, right is digestion
Explanation:
Synthesis refers to the creation of a product, whereas digestion refers to the breakup of the reactant or initial substance.
Does the fossil of Archaeopteryx support Darwin's idea? Explain your answer.
(look at picture and read)
Answers
Answer:
yes
Explanation:
An analysis of fossil traits indicates that Archaeopteryx is not a bird at all. ... Archaeopteryx seemed to confirm Darwin's theories and has since become a key piece of evidence for the origin of birds, the transitional fossils debate, and confirmation of evolution.
2. This body system sends out scouts to recognize pathogens such as
bacteria and viruses. Once identified, it produces antibodies to attack
and kill the pathogen. What body system is being described?
A-Immune
B-cardiovascular
C-muscular
D-digestive
Answers
how had/has human activity influenced the tropic cascade of the aleutian islands kelp forest
Answers
Answer:
humans killing whales caused orcas to have to eat otters which caused sea urchin populations to increase which caused kelp populations to decrease
Explanation:
i need helpppp !
please number them when u type it thanks <3
Answers
Answer:
1)Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
2) The atom that loses the electrons becomes a positively charged ion (cation), while the one that gains them becomes a negatively charged ion
3)onic bonds are important because they allow the synthesis of specific organic compounds. Scientists can manipulate ionic properties and these interactions in order to form desired products. Covalent bonds are especially important since most carbon molecules interact primarily through covalent bonding.
Explanation:
Answer:
I could only find the answer for the 1st one and 2nd one
3.
Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
4.
The atom that loses the electrons becomes a positively charged ion (cation), while the one that gains them becomes a negatively charged ion
How would you describe the solvent front?
Answers
Answer:
In chromatography, the solvent front is the position on the TLC plate indicating the furthest distance travelled by the developing solvent (or eluent) Once a TLC place is developed in a TLC chamber, the plate is removed from the chamber and a pencil is used to quickly mark the furthest point travelled by the solvent
list the resolving power range of naked eye, light microscope and an electron microscope
Answers
Answer:
A scanning transmission electron microscope has achieved better than 50 pm resolution in annular dark-field imaging mode and magnifications of up to about 10,000,000× whereas most light microscopes are limited by diffraction to about 200 nm resolution and useful magnifications below 2000×.
What is weight measured in
A grams
B Kilograms
C Metric Tons
D pounds
Answers
Concept: Unit Representation
You have weight which is commonly represented in SI units of KG In the US metrical units are poundsYour answer depends on which metric you are referring to.The days are longer or shorter because the earth’s axis in blank
PLEASE HELP ME
Answers
Answer: Orbit
Explanation: The Earth’s axis being in orbit means that the Earth is in different positions around the sun at different points in time, causing day and night.
What do aerobic and anaerobic mean and which one is cellular respiration?
Answers
6. What are biodegradable materials
a. These are materials that can be decomposed.
b. These are materials that do not decomposed.
c. These are harmful materials.
d. These are materials that both decomposed and not dec
Answers
Answer:
A
Explanation:
These are the materials that can be decomposed
Which of the following is NOT a function of the digestive system?
Delivers nutrients to the body’s cells
Breaks down food into nutrients the body can use
Absorbs nutrient molecules into the blood
Eliminates waste from the body
Please help I am doing a test.
Answers
Explanation:
Deliver nutrients to the body cells.
What is the function of the polar bodies created during the meiosis of the female egg cell?
Answers
Answer:
Polar bodies serve to eliminate one half of the diploid chromosome set produced by meiotic division in the egg, leaving behind a haploid cell.
Explanation:
What are the codons for lysine?
Answers
Answer:
AAA, AAG
Explanation:
hope it helps..
( I search it)
Answer:
arginine
GCA, GCG, GCT, GCC
TCT, TCC
CGU, CGC, CGA, CGG
AGA, AGG
GCA, GCG, GCU, GCC
UCU, UCC
asparagine
TTA, TTG
AAU, AAC
UUA, UUG
aspartate
CTA, CTG
GAU, GAC
CUA, CUG
cysteine
ACA, ACG
UGU, UGC
ACA, ACG
glutamate
CTT, CTC
GAA, GAG
CUU, CUC
glutamine
GTT, GTC
CAA, CAG
GUU, GUC
glycine
CCA, CCG, CCT, CCC
GGU, GGC, GGA, GGG
CCA, CCG, CCU, CCC
histidine
GTA, GTG
CAU, CAC
GUA, GUG
isoleucine
TAA, TAG, TAT
AUU, AUC, AUA
UAA, UAG, UAU
leucine
AAT, AAC, GAA, GAG
GAT, GAC
UUA, UUG, CUU, CUC
CUA, CUG
AAU, AAC, GAA, GAG
GAU, GAC
lysine
TTT, TTC
AAA, AAG
UUU, UUC
methionine
TAC
AUG
UAC
phenylalanine
AAA, AAG
UUU, UUC
AAA, AAG
proline
GGA, GGG, GGT, GGC
CCU, CCC, CCA, CCG
GGA, GGG, GGU, GGC
serine
AGA, AGG, AGT, AGC
TCA, TCG
UCU, UCC, UCA, UCG
AGU, AGC
AGA, AGG, AGU, AGC
UCA, UCG
stop
ATT, ATC, ACT
UAA, UAG, UGA
AUU, AUC, ACU
threonine
TGA, TGG, TGT, TGC
ACU, ACC, ACA, ACG
UGA, UGG, UGU, UGC
tryptophan
ACC
UGG
ACC
tyrosine
ATA, ATG
UAU, UAC
AUA, AUG
valine
CAA, CAG, CAT, CAC
GUU, GUC, GUA, GUG
CAA
Many small freshwater organisms have a structure called a contractile vacuole, which pumps water out their body. Explain how this process is an example of active transport.
Answers
Answer:
1: The process of osmosis would cause water to move into the cells causing them to swell and possibly burst. Many freshwater one celled organisms have structures called contractile vacuoles. These structures collect and pump out excess water that accumulates in the cell.
2: During active transport, a protein pump uses energy, in the form of ATP, to move molecules from an area of low concentration to an area of high concentration. An example of active transport is the sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.
Explanation:
what is the backbone of RNA made out of?
Answers
Answer:
Explanation:
It has a deoxyribose and phosphate backbone having four distinct bases: thymine, adenine, cytosine, and guanine. Is a polymer with a ribose and phosphate backbone with four varying bases: uracil, cytosine, adenine, and guanine.
What is the building block of all living things?
Answers
Answer:
cell
Explanation:
is a building block of living things
In some ecosystems each trophic level can supply only about 10% of its energy to the next
higher level. How much energy would be supplied to the second-level consumers in this energy
pyramid?
A. 50%
B. 10%
C. 1
D. 0.1%
Answers
Answer:
B
Explanation:
What is the cell nucleus?
Answers
Answer:
The nucleus in a cell is like a brain in a human. It is the power house. The nucleus tells everything in the cell what to do and when to do it.
Explanation:
Answer:the nucleus is an organelle found in eukaryotic cells. The nucleus hold most of the genetic material from the cell.
Explanation:
Why do people feel fireworks before hearing it?
Answers
Answer:
People feel fireworks before hearing it because light travels faster than sound.
Explanation:
We always see the colors of the fireworks before hearing their defeaning sounds. This is because light travels faster than sound, so we can see the light before hearing the sound. An example of this is seeing lightning before hearing thunder. When lightning strikes, the air around it moves very quickly, causing vibrations.
Hope this helps!
xoxo,
cafeology
a chemical change occurs when which of the following is true
A) a substance is dissolved in water
B) you can separate the materials back to their original state
C) bibbles or fizz occur
D) light is reflected off the materials
Answers
Answer:
C) bubbles or fizz occurs
Explanation:
Chem. Change:
-energy is absorbed or released (temperature changes-hotter or colder), color changes, Gas production (bubbling, fizzing, or odor change; smoke).
-Formation of a Precipitate - a solid that separates from solution (won't dissolve)
-Irreversibility - not easily reversed.