Answer:
body size
more
circulatory system
egg deposition
Explanation:
Because of their large body size , ancestral amphibians likely faced challenges supporting themselves out of the aquatic environment.
Although there was far more oxygen available to gills in air than in water, the delicate structure of gills couldn't be supported in the terrestrial environment.
The costs of locomotion on land and greater oxygen demand from enlarged muscles led to modifications of the heart and circulatory system
These early amphibians could not venture too far away from water because egg deposition was restricted to moist environments.
Please help me.. ty if you do
Chloe is studying the effect a certain kind of fungus has on bacteria. Which of the following could be her hypothesis?
"I notice that when a certain fungus is present in a bacterial culture, the bacteria do not grow".
"Based on my tests, I realize that this fungus kills bacteria".
"I predict that the bacterial cultures in which I place this fungus will not grow".
"I propose that this fungus somehow kills bacteria."
Answer:
I propose that this fungus somehow kills bacteria
Explanation:
you rule out 2,3 because a hypotheses has not yet been proven therefore it is not certain
while in 1 in some cases the bacteria can also over power and kill the fungi using genes
but I chose 4 since fungi lack chloroplasts so they feed of ready made food and bacteria can be autotrophic therefore can manufacture food and so the fungi digests the bacteria in the process of trying to acquire the food since they don't have cell walls I guess
Write any five points which helps everyone to orgasms faster.
Answer:
Here are my five -hot -cute -pretty -charming -gorgeous
Explanation:
-Hot = if she's hot she will make you wet
-Cute = if she's cute she will make your thing stick
Pretty = if she's pretty she's tolerable
charming = great vibes
gorgeous = makes you hard
What marked the end of the Precambrian period? A. The appearance of complex, multicellular animals B. The division between archaea and eukarya C. The emergence of simple, protist-like animals D. The development of DNA-based viruses Mark for review (Will be highlighted on the review page)
Answer:
A. The appearance of complex, multicellular animals
Explanation:
Precambrian period is the earliest period in the history of the earth. It was characterized by different evolutionary characteristics and differences.
The end of this period was marked with The appearance of complex, multicellular animals which were able to perform complex tasks
Answer:
A. The appearance of complex, multicellular animals
Explanation:
Section 5.2 ✔
A murmur that is heard after the 1st heart sound and before the 2nd heart sound and is most easily auscultated in the 1st intercostal space immediately to the right of the sternum would most likely be caused by a:
Answer:
is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole or
the closing of the atrioventricular valves
Explanation:
Heart murmurs are noises or vibrations caused by turbulence in blood flow in the heart.
murmur that is heard after the 1st heart sound and before the 2nd heart sound and is most easily auscultated in the 1st intercostal space immediately to the right of the sternum is caused by the closing of the atrioventricular valves or is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole.
Systolic murmurs occur between the first heart sound (S1) and the second heart sound (S2). It is called the lub sound i.e the first sound.
How do you think pollination takes place in flowering plants?
Answer:
My answer is down below.
Explanation:
Pollination occurs when the transfer of pollen grains from the anthers to the stigma of a flower of the same species take place. After reaching the stigma of the flower of the same kind of plant, the pollen grains absorb moisture from the stigma surface and begins to grow a tube. This tube is called the pollen tube.
Explanation:
insects typically pollinate flowers as they move from plant to plant searching for food. when an instects lands on a flower to feed, pollen grains sticks to its body. As the instects moves to another flower of the same species, these pollen grains are transferred to the flower's stigma and pollination occurs.
For a species with a haploid number of 23 chromosomes, how many different combinations of maternal and paternal chromosomes are possible for the gametes based on the independent assortment of chromosomes during meiosis
Answer:
About 8 million
Answer:
About 8 million
Explanation:
define community in biology
Answer:
An interacting group of various species in a certain location.
A critical biotic factor in Yellowstone National Park is
A. high elevation
B. high temperatures in the summer
C.population of wolves
form
D. proximity to water
Answer:
A
Explanation:
3) Because cardiac muscles are mechanically, chemically, and electrically connected to one another, cardiac muscle tissue functions like a single enormous muscle cell. For this reason, it is called a functional ________.
Answer: FUNCTIONAL SYNCYTIUM
Explanation: The cardiac muscles are the Pericardium (outermost), Myocardium (middle) and Endocardium (innermost) though three(3) in number but they work as a unit,this functional unit starts with the action of the pacemaker cells,the Sinoatrial nodes,Atrioventricular nodes, bundle of his,bundle branches/purkinjes fibers.
The contraction of the heart muscles relies on impulses from the nervous system and the contraction is coordinated and rapid inorder to bring about a uniform conduction of blood into, through and out of the heart.
natural selection occurs at the organizational level to
Answer:
B) population
Explanation:
Acts on phenotypes on the individual level but evolution is at the population level. Microevolution is evolution at the population level
Hope it helps you
The graphic shows the citric acid cycle. A diagram of the citric acid cycle is shown. Acetyl C o A enters the citric acid cycle and combines with a 4-carbon compound to form citric acid. During the citric acid cycle, what happens to acetyl-CoA? It enters the citric acid cycle and gains carbon dioxide to form citric acid, and gains more carbon dioxide through redox reactions to form a 4-carbon molecule. It enters the citric acid cycle and associates with a 4-carbon molecule, forming citric acid, and then through redox reactions regenerates the 4-carbon molecule. It enters glycolysis and associates with a 5-carbon molecule through redox reactions, forming another acetyl-CoA molecule. It enters the citric acid cycle and associates with a 4-carbon molecule, forming a 5-carbon compound, and then through oxidation reactions regenerates the 4-carbon molecule.
Answer:
It enters the citric acid cycle and associates with a 4-carbon molecule, forming citric acid, and then through redox reactions regenerates the 4-carbon molecule.
Explanation:
Acetyl-CoA(2C) associates with oxalacetate(4C) to form citric acid(6C). Then through redox reactions, CO2 molecules result from decarboxylation (COOH becomes R-(R1)CH-R2). And through dehydrogenation H2 molecules are incorporated in NADH+ in FADH2, resulting in the 4-carbon molecule at the beginning (oxalacetate). That's why it's called a cycle(Kreb's cycle or citric acid cycle)
In the citric acid cycle, when acetyl-CoA enters the cycle, it associates with a 4-carbon molecule (Oxalacetate), forming citric acid, and then through redox reactions regenerates the 4-carbon molecule (Oxalacetate).
--------------------
The resumed steps of the Citric acid cycle are as follows,
1) Acetyl CoA joins an oxaloacetate molecule, which is a 4C molecule. They release the CoA group and form a 6C molecule called Citrate.
Acetil CoA + Oxalacetato → Citrato + CoA group
2) Citrate turns into an isomere Isocitrate
3) Isocitrate oxidates and release 1 CO₂ molecule, producing an α- ketoglutarate molecule -this is a 5C molecule-. Meanwhile, NAD+ reduces to NADH.
Isocitrate + NAD+ → α-cetoglutarate + CO₂ + NADH
4) α-ketoglutarate oxidates and release 1 CO₂ molecule, producing a 4C molecule, which joins a Coenzyme A producing Succinyl-CoA. Meanwhile, NAD+ reduces to NADH.
α-cetoglutarate + NAD+ → 4C molecule + CO₂ + NADH
4C molecule + Coenzyme A → Succinil-CoA
5) CoA from Succinyl-CoA is substituted with a phosphate group, which then forms ATP. The final product is Succinate and ATP
Succinyl-CoA + Phosphate group + ADP → Succinate + ATP + CoA
6) Succinate oxidizes and forms Fumarate, a 4C molecule. FAD+ forms FAH₂
Succinate + FAD+ → Fumarate + FADH₂
7) A water molecule and Fumarate produce Malate, which is another 4C molecule
Fumarate + H₂O → Malate
8) Finally, malate oxidizes and oxalacetate regenerates -the initial 4C compound-. NAD+ reduces to NADH.
Malato + NAD+ → Oxalacetate + NADH
So, when acetyl-CoA enters the cycle, it associates with a 4-carbon molecule (Oxalacetate), forming citric acid, and then through redox reactions regenerates the 4-carbon molecule (Oxalacetate).
------------------------------------------
Related link: https://brainly.com/question/13369265?referrer=searchResults
What is a monomer of a protein?
Answer:
A monomer is a molecule that can be bonded to other identical molecules to form a polymer
Amino acids are the monomers that make up proteins.
abstract excretion in animals
Given that,
Abstract excretion in animal,
Excretion in animal :
Excretion in animal is defined as the elimination of metabolic,or nitrogenous waste products from the body of an organism.
Type of excretion are,
(I). Ammonotelism
In this type of excretion the excretory product is ammonia.
(II). Ureotelism
In this type of excretion the excretory product is urea.
(III). Uricotelism
In this type of excretion the excretory product is uric acid.
(IV). Aminotelism
In this type of excretion the excretory product is amino acid.
(V). Guanotelism
In this type of excretion the excretory product is guanine.
Learning goal 1: Plastics are:
:natural
:synthetic
Answer:
synthetic
Explanation:
Answer:
The answer is synthetic
Explanation:
Ari drew a diagram to show organisms in an ecosystem. What did Ari draw?
Answer:
food web
Explanation:
Food web is an interconnection and assimilation of different good chains. Many food chains are interlinked a hence a food web is created. This represents what is eaten by which organism. The diagram that Ari had drawn is a diagram of a food chain. The grass is the primary source of food in the food web. Rabbit, Mouse, and grasshopper are the animals that eat the grass. The grasshopper is eaten by a shrew and a mouse. The rabbit and shrew are then eaten by the fox. A mouse is eaten by a snake and a fox. This is the diagrammatic representation of a food web.
Answer:
food web
Explanation:
[Blank] is a protein found in blood that is represented by a + or - sign, which affects the compatibility of blood with other blood types.
A) Rhesus factor
B)Antigen factor
C)Antibody factor
Answer:
the answer is rh factor.
Explanation:
Rh factor is known as the class of antigen or protein found on the rbc
If the protein is present, then the person is said to be Rh positive and when the protein is absent the person is said to be Rh negative.
Rhesus factor is present on the outside of red blood cells plasma membrane
Which statement about this family’s pedigree is correct? Marco carried the gene for color blindness, but Lauren did not. Lauren carried the gene for color blindness, but Marco did not. Marco and Lauren both carried genes for color blindness. Frank and Caleb both carried genes for color blindness.
Answer:
They face vary of things such as asexual reproduction
Explanation:
Answer:
its a
Explanation:
trust
Around the Grand Canyon the predators of deer were largely exterminated by people. The deer population grew rapidly as a result of the lack of predators until the deer exhausted their food supply. This led to a massive die-off (known as a population crash) and hundreds of deer died of starvation. The point at which the food supply no longer supported the large deer population can best be considered a
Answer:
extinct or endangered specimen
Explanation:
Cocklebur will not flower if exposed to 8 hours of dark and 16 hours of light. It will flower if exposed to 16 hours of dark and 8 hours of light. However, if the 16 hours of dark is interrupted with a brief period of light the cocklebur will not flower. What triggers cocklebur to flower
Answer:
Photoperiodism
Explanation:
The process explained in the question is called "Photoperiodism" which refers to the plants' reaction to the length of the dark and light period in a day.
When the dark period is interrupted with a certain period of artificial lighting, the plant thinks that the day had a longer period where it's "light" than it is "dark" so it gets tricked into flowering. Same concept can be applied in reverse for the plants who flower during longer periods of dark.
I hope this answer helps.
Complete each statement with the correct term from the drop-down menu.
Many molecules are moved through the body by
.
provide structure for plants.
determine what people look like.
Cells are surrounded and protected by
.
speed up chemical reactions in the body.
Hemoglobin, a protein, is built by
.
The human body is insulated by
Answer:
1. Proteins
2. Carbohydrates
3. Nucleic acids
4. Lipids.
5. Proteins
6. Nucleic acids
7. Lipids
Correct on edge 2020!!!
in the human nervous system, what is a synapse? A. The difference in ionic charge between the inside and outside of a neuron B. the chemical signal that binds to the next call in a neuron C. A type of neuron that transmits signals from one neuron to the next D. The space between two neurons
Answer:
D
Explanation:
For more info, try specifically researching about synapse junctions
A synapse is a space between two neurons.
Where is the synapse between two neurons?The junction between the axon of one neuron and the dendrite of another, through which the two neurons communicate.
Why is there a gap between two neurons?The gap between two neurons called synapses helps in the quick transmission of impulses from one neuron to another. Other advantages of the synapse are Amplification of current flow.
Learn more about synapse here https://brainly.com/question/26387085
#SPJ2
If fossil species A is consistently recovered from geological deposits beneath layers containing fossil species B, then A is considered to be older than B. This relative dating technique is based on the principle of Group of answer choices fluorine analysis. paleomagnetism. geolayering. superposition.
Answer:
superposition
Explanation:
Dating consists of ordering geological events according to the time they occurred, which ones occurred first, and which ones occurred latterly. This dating can be done by using the superposition geological principle.
Sediments can be incrusted in horizontal layers in the ground, called stratum. Different stratum can give us information about the environment in the past. They keep information about the age and the conditions under which the sediments got deposited.
Some geological principles allow us to date, relatively, the age of different geological events in the past.
Sediment layers place in a temporal sequence, let us know that the older layers are located in an inferior position concerning the newer layers. Hence, fossil species placed in more inferior layers are supposed to be older than fossil species found in more superficial layers.
Mendel’s pea plants had either purple or white flowers. This means that the plants A)can self-pollinate. B)have two recessive traits. C)have two alleles for the gene. D)have two copies of a gene from one parent.
Answer: C) Have two alleles for the gene
Explanation:
Mendel’s pea plants had either purple or white flowers. This means that the plants have two alleles for the gene.
What were the two colors of Mendel's pea plants?Pea colour (green or yellow) Pod shape (constricted or inflated) Pod colour (green or yellow) Flower colour (purple or white).
Thus, option "C" is correct.
To learn more about alleles click here:
https://brainly.com/question/14206531
The function of hemoglobin is to The function of hemoglobin is to stimulate erythropoiesis. carry dissolved blood gases. carry bicarbonate ion. produce antibodies. aid in the process of blood clotting.
Answer:
Carry dissolved blood gases
Explanation:
Haemoglobin is a protein usually found in the red blood cells and is said to be what give the blood its characteristics red color.
Haemoglobin is a protein that also contain some iron atoms which binds oxygen; a gas to itself and aid in the transport of oxygen from the lungs in some group of animals and gills in others to the rest of the body allowing for aerobic respiration to occur in the body.
What is produced at divergent plate boundaries?
a. Mountains
b. Oceans
c. New seafloor
d. Earthquakes
Answer:
new seafloor
Explanation:
which structure acts as traffic police in the above passage?
hi friends please answer to this question with the help of give passage in the pic I posted above.. please help me guys..
Answer:
epiglottis
Explanation:
let me give you an activity swallow saliva and see if you breath
a traffic police stops traffic from one end to let traffic on another end pass
this is what it does when you swallow the epiglottis partially closes the trachea to prevent entry of food and opens after swallowing and therefore acts as a traffic police
which of these changes in the food web would cause a decrease in the population of bald eagles
The correct answer is C. A decrease in the population of sea ducks
Explanation:
Food webs are diagrams that represent the relationship of organisms in an ecosystem by showing feeding or predatory relationships. This means food webs show which organisms eats another organism. In the case of the food web presented, this shows bald eagles fed on sea ducks and large piscivorous fish, this implies for survival bald eagles need from these two organisms. In this context, a decrease in the population of sea ducks (option C) would cause a decrease in the population of eagles because fewer sea ducks imply less food for eagles, and therefore fewer resources to survive.
Which description refers to fog? burns off when it gets dark extends up to 10 miles into the sky is found in areas near bodies of water forms when the ground warms at night after a cool, dry day
Answer:
forms when the ground warms at night after a cool, dry day
Explanation:
fog forms when the ground is cooler then the air around it
Answer:
[tex]\large \boxed{\mathrm{is \ found \ in \ areas \ near \ bodies \ of \ water}}[/tex]
Explanation:
Fog forms when water vapor condenses to tiny droplets of water. The moisture that creates fog is produced from nearby or at bodies of water.
Can chickens
and ducks
live
together?
Answer:
no chickens and ducks not together live
Answer:Yes
Explanation:
I had my chickens and duck live together for a long time. The ducks might try to peck the chickens but it is just them figuring out the pecking order. Hope this helps!
The list below represents some dominant and recessive traits observed in pea plants.
Dominant
Recessive
Green pods (G) Yellow pods (g)
Smooth seeds (S) Wrinkled seeds (s)
To produce 100% offspring with yellow pods and wrinkled seeds, what parental genotypes must a researcher use?
O GGSS X Ggss
ggSS X GgSS
O GGss X SSGG
ggss X ggss
Answer:
ggss x ggss
Explanation:
To produce 100% offspring having yellow pods (g) and wrinkled seed (s), we need to cross two organisms having yellow pods and wrinkled seeds.
You'll understand more by the Punnett square in the attached file.