Cells need oxygen and nutrients to function well and get rid of waste products produced incellular reactions. Which system participates in these exchanges?
Answer:
cardiovascular system
Answer:
circulatory systemA requirement for the circulatory system to carry out its function of bringing blood close to cells so that the exchange of nutrients (e.g., oxygen) and wastes can take place by diffusion is that the blood be able to flow through the complicated networks of blood vessels in the various organs
TRUE or FALSE: “ The change from a T to a C at position 3 caused all the changes that exist between the cichlid and the coelacanth/frog.” Explain your answer.
How many valence electrons does magnesium (Mg) have?
Ο Α. 12
B. Six
O C. three
O D. two
Answer:
Magnesium is in the group #2 on the periodic table of elements. This means it has two valence electrons.
Answer:
two
Explanation:
what is the purpose of transcription
A.to produce DNA
B. to produce amino acid
C. to produce RNA
D. to produce lipids
Answer:
To produce rna
Explanation:
What characteristic makes marine mammals different from other marine animals?
They all give birth on land.
They live only in the ocean and cannot leave the water.
They are carnivores that eat mainly fish.
They breathe air through lungs.
Answer:
d
Explanation:
bc its d
The characteristic that makes marine mammals different from other marine animals is that they breathe air through their lungs. Thus, the correct option for this question is D.
What are the characteristics of marine mammals?The characteristics of marine mammals may significantly include they breathe air through the lungs, being warm-blooded, having hair (at some point during life), and producing milk to nurse their young — while also living most or all of their lives in or very near the ocean.
Marine mammals have the same characteristics as all other mammals, but they have adapted to living all or part of their life in the ocean. Many have streamlined bodies to help them swim faster. With similar to the Fishes and other animals that have gills so they can breathe underwater. Marine mammals do not have gills. They have to come to the surface to breathe.
Therefore, the characteristic that makes marine mammals different from other marine animals is that they breathe air through their lungs. Thus, the correct option for this question is D.
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What two types of cells are involved in immune response and have the job of creating a "memory" of exposed pathogens? *
a)A cells and B cells
b)T cells and A cells
c)T cells and B cells
d)red and white blood cells
Answer:
B
Explanation:
please help me with this it’s due today
Answer:
The correct answer is - 0 m/s.
Explanation:
In this position-time graph or distance-time graph, there are three different part that shows three different velocities one in increasing as it moves from a lower position in relative to time and one is stationary and the third is decreasing.
'Straight lines' on a distance-time graph suggest that the movement of the object is constant. During 'Part B' of the journey the object travels 0m in 3s. It is stationary for 3 seconds so the velocity will be zero as well.
Which statement is true?(1 point) A dichotomous key uses question pairs to identify organisms by their group. A dichotomous key uses samples to identify organisms using observable traits. A dichotomous key uses photographs to identify organisms using observable traits. A dichotomous key uses question pairs to identify organisms by their characteristics.
Answer: A. Each step has two choices.
Explanation:
Hope this helped
A dichotomous key uses question pairs to identify organisms by their group is a true statement.
How is a dichotomous keys used to identify organisms? List down the characteristics. Organize the characteristics in order. Split the specimens. Split the specimen even further. Mark a dichotomous key diagram. Test it out.Thus, the true statement is a dichotomous key that uses question pairs to identify organisms by their group.
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(14 point!!!!) HOW AND WHY HAS THE SCORPION CHANGED!
What is converted into chemical energy during photosynthesis?
a.soil
b.nitrogen oxide
c.radiant energy
d.all of these
Photosynthesis in plants converts solar energy into chemical energy using electrons and protons from water. ... In the energy-transduction reactions, solar energy is converted into chemical energy in the form of two energy-transporting molecules, ATP and NADPH.
Fenómeno que consiste na combustão de grandes áreas florestais e conduz à libertação de grandes quantidades de CO2 para a atmosfera.
Answer:
Wildfires.
Explanation:
Wildfires is the phenomenon that causes combustion of large forest areas and leads to the release of large amounts of CO2 into the atmosphere. Wildfire occurs naturally as well as carelessness of humans that leads to the destruction of large area of forest and the habitat of wild animals also destroyed which compels them to migrate from that region. This wildfires produced high amount of carbondioxide gas in the atmosphere that is the main cause of air pollution.
need help with this getting confused
What is the pathway of air into the body?
Which plays both a role in physical and chemical digestion?
teeth
saliva
gall bladder
villi
Answer:
I'm not sure on this, but I would say saliva. Take this answer with a grain of salt though
Answer:
Saliva
Explanation:
I just got 100% on Edg.
Which is an abiotic factor in Florida's environment?
Answer:
Hurricanes
Explanation:
Hurricanes take place in the Florida Keys about 13-16 percent. These violent storms can damage coral reefs because of high winds and large waves.
1. Since the acronym for traits of the Plant Kingdom is "Early Melons Are Sour," one of the traits of a plant is:
a. it is capable of parasitism
b. it does not move from one place to another
it is always unicellular
d. it coevolved with a bumble bee
C.
This incorrect copy is known as a
A.
mutation.
B.
protein.
C.
duplicate.
D.
codon.
how cutting down trees contribute to global warming??
Answer:
Carbon is stored in the plant, which helps a plant to grow. But when trees are cut down and burned and or allowed to rot, their basically storing carbon dioxide, which then gets released into the air ... again known as carbon dioxide. In conclusion this is how deforestation or cutting down trees and including forests can lead to and or contribute to global warming.
Which characteristic shows discontinuous variation in humans?
Length of foot
Height
Weight
Tongue rolling
Answer:
length of foot
Explanation:
L
E
N
G
T
H
O
F
F
O
O
T
Can plants produce oxygen in the dark?
Answer:
There are certain plants that can produce oxygen at night like Aloe Vera. Peepul, Snake plant, and Areca Palm.
Explanation:
Answer and Explanation:
Some plants can some plants cant..
The speed of an object at a particular moment in time is known as the........
A. instantaneous speed
B. instantaneous velocity
C. Speed
D. Velocity
Answer: It would be A. Instananeous speed
Explanation: It is measured in metres per second
which one ?
A.
B.
C.
D.
Answer:
D
Explanation:
Answer and Explanation:
D should be the right answer. Let me know if I'm wrong..
A.)During cellular respiration, energy is stored in carbon dioxide and
water molecules. The energy is released during photosynthesis.
B.)During cellular respiration, energy is stored in large molecules in food. The
energy is released during photosynthesis.
C.)During photosynthesis, energy is stored in oxygen molecules. The energy is
released during cellular respiration.
D.)During photosynthesis, energy is stored in large molecules that contain carbon. The energy is released during cellular respiration
contain carbon. The energy is released during cellular respiration.
Answer:
I really think it is c during photosynthesis energy is stored in oxygen..........
please help me. i will love u forever
Answer:
éu mmhilão mo ei e
Explanation:
tô tanendomaissoc or roooo
HELP PLZZZZZZZZz
givein 20 points
Answer: The first graph is -50, the second is 5, the third is 5.
Explanation:
The first graph are three points that goes down, the second graph are three points that goes up, and the third graph is a linear function that has a slope of 5.
Answer:
cap is only 10
Explanation:
Unlike strong acids, strong bases do not have any negative effects on the skin. Select one: True False
Answer:
False
Explanation:
1. Why is it important to replicate DNA?
Answer:
Here you go
Explanation:
The purpose of DNA replication is to produce two identical copies of a DNA molecule. This is essential for cell division during growth or repair of damaged tissues. DNA replication ensures that each new cell receives its own copy of the DNA.
The greatest amount of genetic variation is produced in offspring that reproduce -
A. sexually through fission B. asexually through budding C. sexually through meiosis D. asexually through mitosis
In meiosis, the greatest amount of genetic variation is produced in offspring that reproduce sexually, hence option C is correct.
How do organisms reproduce sexually through meiosis?Because the environment is continually changing, sexual reproduction often has an advantage over asexual reproduction.
Increased phenotypic variation, or the physical variety of the organisms, results from higher genetic diversity.
Each gamete has a unique DNA set because of recombination and independent assortment during meiosis. The resultant zygote has a special set of genes as a result.
Genetic variety can be increased by new genes and alleles being created as a result of gene duplication, mutation, or other events.
Therefore, it is possible for novel gene combinations to arise during sexual reproduction.
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"Totipotency lasts for only a few days before the cells' fates are set as being the precursors to a specific lineage of cells." What does this sentence mean? Restate in your own words.
Pre-embryonic cleavages make use of the abundant cytoplasm of the conceptus as the cells rapidly divide without changing the total volume.
Help me please :( ,Someone
Which type of muscle's movements are involuntary?
A. Smooth muscle and Cardiac muscle
B. Smooth muscle and Skeletal muscle
C. Cardiac muscle
D. Skeletal muscle