Genes are
A.
of four types: adenine, cytosine, thymine, and guanine
B.
the proteins DNA wraps around to form chromosomes
C.
sequences of DNA that control a trait or traits
D.
the building blocks that make up proteins
write down the importance of mixtures in our daily life
Answer:
Mixtures and solutions are a common occurrence in our everyday lives. They are the air we breathe, the food and drink we consume and the fabrics we wear. By studying how chemists distinguish pure substances from mixtures and solutions, students will start to appreciate how matter is organized at the atomic level.
Explanation:
This is why the mixtures in our daily life is important.
How do seabirds differ from other bird species?
1-Seabirds breed earlier that other birds.
2-Seabirds have a shorter life cycle.
3-Seabirds live in large colonies.
4-Seabirds have many offspring.
Answer:
3 seabirds live in large colonies
Within the noncoding portion of the human genome, _______ are DNA sequences that resemble protein-encoding genes, but their mRNA is not translated.
Answer:
pseudogenes
Explanation:
the melanocytes of the choroid in the eye produce what layer
Answer:
the uvea
Explanation:
Hope this helps!
Answer:
Melanocytes are found in the middle layer of the eye, known as the uvea, composed of the choroid, the iris and the ciliary body.
What is happening when the cells start to swell up with water?
O A. Osmosis is taking place.
O B. Diffusion is stopping.
C. Membranes are less permeable.
D. Solutes are moving outside.
Blank is the property that allows only some
substances in and out of a cell
Semi-permeability / Selective-permeability is the property that allows only some substances in and out of a cell. The cell membrane of the cell is semi-permeable.
______
RainbowSalt2222 ☔
Do you think the school system is not that challenging?
True or false as water is heated it expands becomes less dense and rises
decrease in temperature caused the water molecules to lose energy and slow down, which results in water molecules that are closer together and a decrease in water volume. When water is heated, it expands, or increases in volume. When water increases in volume, it becomes less dense.
Answer: Water expands and becomes less dense when it freezes.
Explanation:
this pedigree documents an autosomal recessive trait. remember, affected individuals are represented by filled in shapes. what is the genotype of individual 6 at generation ii?
Calculate the biodiversity loss in each extinction and report in terms of percent.
Biodiversity loss due to extinction can be calculated by comparing the number of species lost to the total number of species present in the ecosystem or on the planet.
What is biodiversity loss?For example, if an ecosystem had 100 species of plants and animals, and 10 of those species went extinct, the biodiversity loss would be 10% (10/100).
However, it's important to note that the actual calculation of biodiversity loss due to extinction is more complex than this, as it can take into account factors such as the unique roles that each species plays in the ecosystem, as well as the potential cascading effects of their loss.
Additionally, calculating the precise biodiversity loss percentage for past extinctions may be challenging due to gaps in our knowledge of the species that existed at the time.
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which cell type is responsible for the cell-mediated immune response?
Answer:
the T cell are responsible for cell mediated immune response
pleeeasseee i need help
Answer:
"DRY MIX"
Dependent responding (variable) X axis
Manipulated independent (variable) Y axis
The drinks is the dependent variable because it "responds" to the temperature and is "dependent" on the temperature. The temperature determines the drinks sold-but the drinks sold doesn't determine the temperature.
what is different between two alleles of the same gene?
Answer: heterozygous
Explanation: Each variation is an allele, and each allele will produce a slightly different effect. Alleles of the same gene differ by their genetic sequence.
Increased myelination of the central nervous system is related to improvement in _______ motor skill development.
Answer:
Increase myelinated of the central nervous system is related to improvement in the transmisión of the electrical impulses and the motor skill development.
Explanation:
resistance to blood flow is regulated primarily by what blood vessels?
Answer:
arterioles
they regulate the blood vessels
Resistance to blood flow is regulated primarily by the arterioles of blood vessels. Hence, the correct option is A.
What are arterioles?They are small arteries that branch off from the larger arteries and lead to capillaries. They play a crucial role in the circulatory system by regulating blood flow and controlling blood pressure.
Furthermore, they are equipped with smooth muscle fibers in their walls, which can contract or relax to alter the diameter of the vessel and regulate blood flow to the capillaries. This ability allows the body to redistribute blood to different parts of the body in response to changing conditions.
They help to maintain blood flow and ensure that the body's tissues receive oxygen and nutrients they need to function properly. Hence, the correct option is A.
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The question is incomplete, but most probably your complete question is,
Resistance to blood flow is regulated primarily by what blood vessels?
a. Arterioles
b. Veins
c. Arteries
d. Ventricle
I need help with this
Answer:
115.00 units of Volume ....
formation of bubbles of a what can also be sign of chemical reaction
Answer:
gas
Explanation:
the formation of bubbles when two liquids are mixed usually indicate that a gas has formed
Why couldn't Darwin or Oparin's ideas be called science?
Darwin's theory didn't show how the variations occur or what was the basis of the variations occurring in the organism. He failed to mention the concepts of DNA. He failed to mention the origin and transmission of variations in his theory of evolution. The Oparin-Haldane hypothesis suggests that life arose gradually from inorganic molecules, with “building blocks” like amino acids forming first and then combining to make complex polymers. I don’t know whether Oparin dealt with this issue, but I could think of several reasons. For example:
The chemical make-up on Earth today is not the same as it was 4 billion years ago. There are several differences, but one especially important factor is that the primitive atmosphere was almost devoid of free oxygen, which would have been harmful to early life that wasn’t very developed yet.
Any life that arises today would also have to compete with existing life, which is already much more advanced.
It’s also possible that some life does arise, say, every few million years… but that we haven’t observed it happening.
You need to understand that we don’t know yet how likely it is for life to appear naturally… and what the exact conditions are for this to happen.
What two structures make up the central nervous system?
Answer:
The brain and the spinal cord.
Explanation:
The C) one ASAP HELP
PLSS
Answer:
chain, eco-system, people, decomposers, stomachs
Explanation:
Basically, the micro-organisms or you can refer as bacteria. They can break down substances, including dead matters (called decomposers, for example, worms). They can help digest food in our stomach for better absorption. Hope this helps.
in the hexaco model of personality traits, to what does the "x" refer?
In the HEXACO model of personality traits, the "X" refers to EXTRAVERSION. This model comprises six (6) personality dimensions.
The HEXACO model comprises six dimensions of human personality: Extraversion (X), Humility-Honesty (H), Agreeableness (A), Emotionality (E), Conscientiousness (C), and Openness to new experiences (O).
This model was developed by Costa and McCrae and Goldberg, using a similar strategy to those used to identify and/or recognize taxonomic traits.
The H dimension of human personality is a distinctive feature of the HEXACO model, which is inversely associated with different criteria (e.g. criminal activity, unethical behaviors, etc).
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Plants need many nonliving things, like minerals, to survive. Where do plants get minerals?
OA.
from animals
OB.
from the soil
C.
from sunlight
D.
from the air
Answer:
From the soil.
Explanation:
Soil has non-organic and organic matter, therefore it is beneficial to the plant. The non-organic part of the soil is sediment, which has many minerals that the plant can use to its advantage.
Hope this helped :)
Predict what would happen to regulation of the lac operon if the lacI gene were moved 50,000 nucleotides upstream of its normal location.
Given our understanding of biological gene expression regulation, we can confirm that the movement upstream of the lac gene by 50,000 nucleotides would have no effect on the regulation of the lac operon.
The lac operon is one of the genes that is regulated irrelevant to its position in the genome. The reason for this is that it is regulated by a series of proteins, which will be transcribed without any dependence on the position of the lac operon gene in the genetic code.
The expression of the gene is determined by these two proteins, one of which will have a positive effect whilst the other a negative. This is intended to function as a feedback loop to keep values at a normal level. One protein will prevent the lac gene from being transcribed, while the other will promote its transcription. Each will activate in response to a concentration stimulus.
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Lichens are not single organisms, but algae and fungi that function together. The algae use photosynthesis to make food for both organisms. The fungi produce digestive chemicals and absorb nutrients for both organisms.
How does the biological activity of lichens cause weathering in rocks?
Answer options with 4 options
A.
Lichens cause friction as they grow, which weathers the rocks.
B.
Lichens produce chemicals, which dissolve and weather the rocks.
C.
Lichens take in water, which freezes in cracks and weathers the rocks.
D.
Lichens absorb heat during photosynthesis, which weathers the rocks.
Answer:
B
Explanation:
Lichens also have significant impact in the chemical weathering of rocks by the excretion of various organic acids, particularly oxalic acid, which can effectively dissolve minerals and chelate metallic cations.
Do animals have feelings?
who formulated the one gene–one enzyme hypothesis?
Answer:George Wells
Explanation:
The one gene–one enzyme hypothesis, proposed by George Wells Beadle in the US in 1941
What part of the amino acid varies from one animo acid to another?
the neurons that transmit the signal to your foot to kick a soccer ball are called
What is the chemical equation for cellular respiration?
Answer: C6H12O6 +O2 → CO2 + H2O+ energy
Explanation:
