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Which of the following correctly states the law of conservation of energy?
Question 5 options:
Transformations are inefficient because some energy is destroyed and lost as heat.
Energy is created when it is transformed from one form to another.
Energy can be created or destroyed, as well as transformed from one form to another.
Energy cannot be created or destroyed, but it can be transformed from one form to another.
Answer:
D the last one
Explanation:
Answer:
D- Energy cannot be created or destroyed, but it can be transformed from one form to another.
Explanation:
took the test
is thunderstorm abiotic or biotic?
Answer:abiotic it is non living
Explanation:
Emily's body starts to develop secretory glands at the end of the milk ducts in the breasts. Based on the given information, we can say that Emily is most likely to be in the _____ stage.
Answer:
Thelarche
Explanation:
In females, thelarche represents the start of puberty and as such it marks the beginning of the secondary development of the mammary glands known as breasts. This pubertal development usually occur in females that are between the ages of 8 years and 12 years due to the secretion of hormones such as estrogen.
In this scenario, Emily's body starts to develop secretory glands at the end of the milk ducts in the breasts. Based on the given information, we can say that Emily is most likely to be in the thelarche stage because she is beginning to experience breast budding.
The major mechanism of action of anandamide appears to be: Group of answer choices presynaptic facilitation. postsynaptic facilitation. presynaptic inhibition. postsynaptic inhibition.
Answer:
presynaptic inhibition
Explanation:
Presynaptic inhibition is an inhibitory mechanism capable of modulating neurotransmitter release in the central nervous system (CNS), i.e., by suppressing the release of neurotransmitters from axon terminals. Endocannabinoids are neurotransmitters that bind to receptors in other cells, thereby indirectly affecting the activity of other neurotransmitters. Anandamide is a neurotransmitter derived from arachidonic acid -an omega-6 fatty acid-, whose effects are mediated by cannabinoid receptors in the CNS. This major endocannabinoid (anandamide) is thought to inhibit the release of the inhibitory neurotransmitter γ-aminobutyric acid (GABA).
Can someone please help me with this? Thanks so much!
1. aabb, (made by ab x ab)
2. green and smooth
3. 3/16, (combinations would be AAbb, Aabb, and Aabb)
4. 1/16
5. 1/16 (only 1 AABB)
6. 4/16 (4 with AaBb)
Please help me guys!!
Describe what role do humans have in protecting or changing this issue? Explain steps or plans you would implement.
Here are a few examples of ideas you could discuss:
Climate change
Habitat destruction
Invasive species
Pollution
Overpopulation
Overconsumption-exploitation
Answer: Humans can address and resolve the issues related to their environment and social problems.
Explanation:
Climate change: The climate change is caused by the seasonal change or due to human oriented activities like burning of fossil fuels related to liberation of green house gases this is related to global warming.
Human beings can take initiative of utilizing less fossil fuels, planting more trees so that they can absorb more carbon dioxide gas which is a chief green house gas responsible for raising the temperature.
Habitat destruction: The habitat destruction happens when the habitat is destroyed due to forest fire, volcanic eruption, earthquake or cyclone.
Humans can build strong houses by keeping in mind the hazards can influence the building where they are living.
Invasive species: The invasive species is the one which is introduced into the new environment due to human effort or naturally. The invasive species reduce the population of the native species by competing for resources.
The humans can determine whether the invasive species can possibly affect the members of the native species or not. Possible measures can be taken to reduce their population by selective hunting.
Pollution: The contamination of air, water, and soil by the action of polluting agents is called pollution.
The pollution can be reduced by reducing or restricting the sewage and industrial discharge in water, stopping or reducing the use of fossil fuel which on burning produce contaminating gases, and reducing the use of polythene bags which can contaminate the soil.
Overpopulation: The overpopulation is condition in which the population of the species exceeds the carrying capacity of the region. The carrying capacity is the ability of the ecosystem to sustain a particular number of members of the species depending upon the availability of resources.
The overpopulation in case of humans can be controlled by use of contraceptives, small family rule adaptability, and by stopping early marriage as this can offer long reproductive period to couples.
(a) A cell where PKB is always active has a mutation that results in the permanent activation of GSK3. Based on the information in Figure 2, predict the effect of this mutation on the activity of glycogen synthase. Justify your prediction.
Answer:
a. Normally, PK2 activates PK1. We are told that PK1 and PK2 normally work sequentially in an intracellular signaling pathway. If PK1 is permanently activated, a response is seen independently of whether or not PK2 is present. If PK1 activated PK2, no response should be seen if PK1 were activated in the absence of PK2.
GSK-3 is an unusual protein kinase in that it displays high, “constitutive” activity in unstimulated cells and is rapidly inactivated upon a variety of cellular stimulations. The most thoroughly documented pathway for the inactivation of GSK-3 is in response to insulin and is mediated by protein kinase B (PKB, also termed Akt), which lies upstream of GSK-3 [8].
A cell wherein the PKB seems to be constantly active does indeed have a disorder that makes GSK3 to be permanently activated. Kinases, for example, control glycogen synthase as well as glucose acid phosphatase.
GSK3, as well as glycogen synthase kinases 3, is however one enzyme that is controlled through PKB phosphorylase kinases.Throughout one cell, PKB seems to be constantly in motion, culminating in GSK3 regulation, which would, in turn, be responsible for glycogen synthase activities only through the signaling cascade.
Thus the response above is correct.
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The particle of an atom. That carries no electrical charge is called a
Answer:
Neutrons have no electrical charge. Protons and neutrons together make a dense bundle at the center of an atom. This bundle is called the nucleus. Electrons have a negative electrical charge (-) and move around the nucleus. Electrons are the smallest of these particles.
When will natural selection occur? A. When there is no competition B. When a population reaches carrying capacity C. When there are plenty of resources D. When there is no variation in a species
Answer:
B because when it hits its carry capacity its survival of the fittest to live
When a population reaches carrying capacity.
What is Natural selection?
An evolutionary mechanism is natural selection. Environment-adapted organisms have a higher chance of surviving and dispersing the genes that contributed to their success. Over time, this mechanism leads to the evolution and divergence of species.
One way to explain the millions of species that have existed on Earth is through natural selection.
The idea of evolution by natural selection is credited to Charles Darwin (1809-1882) and Alfred Russel Wallace (1823-1913), who co-wrote a paper on it in 1858.
Therefore, When a population reaches carrying capacity.
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What evidence do scientists have to support the theory of PANGAEA?
Answer: fossil records
Explanation: there where the same species on different continent's
Where does magma come from? where does sediment come from?
Answer:
The composition of magma depends on the rock it was formed from (by melting), and the conditions of that melting. Magmas derived from ...
Answer:
Magma originates in the lower part of the Earth's crust and in the upper portion of the mantle where as Sediment is solid material that is moved and deposited in a new location.
help
i don’t understand this question
How are humans changing the carbon cycle? Question 2 options: Humans are adding carbon to the Earth by over-farming. Humans are burning carbon and putting it into the atmosphere. Humans are planting more trees to add more oxygen to to the carbon cycle.
. The ultimate goal of diffusion is to–
Explanation:
Both diffusion and osmosis aim to equalize forces inside cells and organisms as a whole, spreading water, nutrients and necessary chemicals from areas that contain a high concentration to areas that contain a low concentration.
Answer:
It is to:
Explanation:
To equalize forces inside cells and organisms as a whole, spreading water, nutrients and necessary chemicals from areas that contain a high concentration to areas that contain a low concentration
Where is most nitrogen found that is unusable by plants and animals?
A soil
B atmosphere
C ocean
D space
Answer:
b atmosphere
Explanation:
this is based off of past knowledge so if its wrong im sorry- but doesnt nitrogen take up most of our atmosphere? thats why i chose this
) What kind of approach to phylogeny reconstruction is ribosomal RNA sequencing: cladistic or phenetic
Answer:
cladistics
Explanation:
Cladistics is a phylogenetic approach used to classify groups of organisms based on shared derived characteristics (synapomorphies) that are not present in distant ancestors. Cladistics describes evolutionary relationships between organisms. Ribosomal RNA genes such as, for example, 5S ribosomal RNA, are appropriate for phylogenetic (cladistic) analyses because they are evolutionarily conserved between related species. Using ribosomal RNA genes, it is possible to trace evolutionary relationships ranging from kingdom level to genus. Unlike cladistics, phenetics is a method used to classify organisms based on the degree of similarity between them (usually by using external and/or morphological/observable phenotypic traits), regardless of their evolutionary relationships.
Most of the GMO crops grown today were developed to help farmers prevent crop loss. The three most common traits found in GMO crops are: (1) resistance to insect damage; (2) tolerance to herbicides; and (3) resistance to plant viruses. Let's consider #2, tolerance to herbicides: farmers using herbicide-tolerant crops do not need to till the soil, which they normally do to get rid of weeds. Which of these is NOT a positive environmental and economic impacts of this GMO trait?
A) Reduced soil tillage results in less soil erosion.
B) No-till planting results in lower fuel and labor costs.
C) No-till planting results in higher crop yields per acre.
D) No-till farming results in increased organic matter and cycling of nutrients in the soil.
Answer:
B. No-till planting results in higher crops yields per acre.
Explanation:
i got that in usa test prep :( only cuz it was wrong
Answer:
the answer would be No-till planting results in higher crop yields per are
Match the part of the brain to its function:
-
Where we think, receive sensations, control our muscles and speech.
-
coorditnates muscle movement
-
controls body temperature, appetite and thirst
-
controls circadian rhythms
-
emotional center
-
controls reflexes for heart rate, breathing and blood pressure
A.
cerebrum
B.
medulla oblongata
C.
hypothalamus
D.
cerebellum
E.
limbic system
F.
pineal gland
Answer:
A
B
C
D
E
F
the correct answer is perpendicular to line AB and passes through the given
The cerebrum controls and regulates muscle and speech. The cerebellum coordinates muscle movement. The hypothalamus controls the body temperature and appetite. The pineal gland is for circadian rhythms. The limbic system is the emotion centre of the body. The medulla oblongata regulates heart rate.
What are the different parts of the brain?
The brain has different parts, such as the forebrain, midbrain, and hand brain. In the forebrain, there is a cerebrum. In the cerebrum, there are Broca's and Wernika's areas. These regulate the language. The cerebrum receives sensations and controls muscles.
The hypothalamus controls the body temperature and appetite. It releases different hormones to control that. The pineal gland secretes melatonin, which regulates the circadian rhythm of animals. The limbic system regulates different emotions such as happiness, anger, etc.
The hindbrain has a cerebellum. This regulates voluntary muscle movements like walking, etc. The medulla oblongata regulates involuntary activities such as heart rate, respiration, etc.
Hence, A is related to the first statement. B is related to sixth, C is related to third, D is related to second, E is related to fifth, and F is related to fourth.
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Focus Question 2.5
Why do stars appear to mov in the night sky
Answer:
These apparent star tracks are in fact not due to the stars moving, but to the rotational motion of the Earth. ... As the Earth rotates with an axis that is pointed in the direction of the North Star, stars appear to move from east to west in the sky.
What evidence supports a conservation law?
Energy from sunlight becomes glucose during photosynthesis.
Carbon dioxide becomes glucose and oxygen during photosynthesis.
O Hydrogen is made from the breakdown of carbon dioxide during photosynthesis.
O Glucose and
oxygen become carbon dioxide and water during photosynthesis.
Answer:
yes
Explanation:
Answer:
its a
Explanation:
In mice, the allele for black coat color (B) is dominant over the brown allele (b). Two heterozygous mice are mated, and produce the following offspring:
20 black
4 brown
What is the EXPECTED FREQUENCY of black and brown mice in the offspring from this cross?
a. 5 black: 1 brown
b. 3 black: 1 brown
c. 2 black: 1 brown
d. 1 black: 3 brown
Answer:
a. 5 black: 1 brown
Explanation:
This question involves a gene coding for coat color in mice. The allele for black coat color (B) is dominant over the brown allele (b). This means a mouse that is heterozygous for the Gene will have a black coat color.
According to this question, two heterozygous mice are mated i.e. Bb × Bb to produce the following offspring: 20 black mice and 4 brown mice.
Based on this result, the EXPECTED FREQUENCY of black and brown mice in the offsprings can be calculated;
20 black ÷ 4 = 5
4 brown ÷ 4 = 1
The expected frequency of black to brown is 5:1.
Describe how traits are inherited through sexual reproduction.
The resulting offspring inherit one half of their traits from each parent. The process where haploid sex cells are created from diploid parents is called meiosis, and it occurs only in the reproductive organs.
Wha part of flower containspollen
Hey yall you don't know me but can someone help ill do anything
i need help this is due by 3:00 today
Answer:
the second to last one would be:
because we create too much waste. we have multiple companies creating harmful gases and liquids that are ruining our envoirment.
this will also help with a few other questions x
can Multiple alleles affect eye color
Answer:yes
Explanation:
Genetic mutation
What’s the answer to 1 and 2 please help me I’ll give brainliest
Answer:
1. Everything except for rocks
2. Humans are burning carbon and putting it in the atmosphere
Explanation:
What is the porosity of the silt sample?
A)
80%
B)
53%
C)
25%
D)
44%
Answer:
Explanation:
B = 53 %
is right....
When a whale dies, its body often falls
to the seafloor. The whale's body then becomes food and shelter for organisms in the deep sea. This is called a whale fall. A deep-sea whale
fall might support 200 different species for as long as 10 years! Larger species, such as Atlantic hagfish, are the first to arrive to feed
on the whale flesh. Later, smaller species of snails and crustaceans come to eat the remaining flesh. Worms burrow into the sand beneath
the whale body, and bacteria feed on the whale bones.
At a deep-sea whale fall, the Atlantic hagfish, the crustaceans, and the sand make up which
of the following? Select all that apply.
A. a population
B. part of a community
C. part of an ecosystem
Answer: c. Part of an ecosystem
Explanation: the fish, crustaceans, molluscs and bacteria are part of a community, but sand is not. Each of those species is part of a population.
Answer:
I would say B and C
Explanation:
Like all ecosystems, all organisms depend on each-other. Living or non-living all animals depend on each-other.
Fur color in animals is frequently controlled by more than one gene. However, brown fur in rabbits is dominant over white fur. A white female gives birth to all white rabbits, even though the father had brown fur. Show how this is possible.
Answer:
Please find how this is possible in the explanation below
Explanation:
This question is regarding a gene in rabbit coding for fur color. Brown fur (B) in rabbits is dominant over white fur (b). However, according to the question, a white female gives birth to all white rabbits, even though the father had brown fur. This is possible because the father is heterozygous for the brown fur i.e Bb.
Hence, in a cross between a heterozygous father (Bb) and a white mother (bb), the following gametes will be produced by the following parent:
Bb - B and b
bb - b and b
Using these gametes in a punnet square (see attached image), the probability of 1/2 of the offsprings will possess white fur (bb). Based on this result, the white female is able to give birth to all white rabbits because the male rabbit contributed the white allele (b).