Answer: Lumbar and sacral nerves travel nearly vertically down the spinal canal to reach their exiting foramen. The spinal cord ends at the intervertebral disc between the first and second lumbar vertebrae as a tapered structure called the conus medullaris, consisting of sacral spinal cord segments.
Explanation:
What part of the amino acid varies from one animo acid to another?
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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A dormantvolcano means it hasn't erupt for a long time, but still could possibly erupt in the future. True or false. Help plz and no links
Answer:
TRUE
Explanation:
A dormant volcano is an active volcano that is not erupting, but supposed to erupt again.
After 10,000 Years It become Dormant, But is excpected to erupt again. there are many volcanos that Are dormant Heres A list!
Mauna Kea in Hawaii, the United States. Mount Edziza in Canada. Mount Kilimanjaro in Tanzania. Mount Rainier in Washington, the United States. Western Victorian Volcanic Plains in Australia. Trou aux Cerfs in Mauritius. Mount Hood in Oregon, the United States.Your Welcome Hope it Helps!! (Brainlist maybe? :D)
the neurons that transmit the signal to your foot to kick a soccer ball are called
What two structures make up the central nervous system?
Answer:
The brain and the spinal cord.
Explanation:
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
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
The plant tissue carrying out the function of carrying water from the roots to the leaves is:
Answer:
Xylem, plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support. Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheary elements.
Explanation:
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.
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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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
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.
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 :)
Which part of the brain creates three-dimensional visual images from sensory information from the optic nerve
Answer:
occipital lobe
Explanation:
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:
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:
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 ☔
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 of the following types of molecules lack hydrophilic domains?
A.transmembrane proteins
B.integral membrane proteins
C.peripheral membrane proteins
D.cholesterol
The types of molecules lack hydrophilic domains is option A and option D
The following information should be considered:
Cholesterol molecules lack hydrophilic domains since Cholesterol molecules are oriented with their small hydrophilic hydroxyl group to- ward the membrane surface and the remainder of the molecule embedded in the lipid bilayer. Transmembrane protein are also highly hydrophobic and aggregate and precipitate in water. Hence option a and d are correct.Learn more: brainly.com/question/16911495
1. The ______________ is often referred to as the powerhouse of the cell since it is where sugar is used to generate energy.
2. The __________ of a plant cell are where the photosynthesis takes place.
3. What is the difference between a cell wall or a cell membrane?
This may help whoever answers the question. These questions are from a video. Here is the link: https://www.generationgenius.com/videolessons/plant-and-animal-cells-video-for-kids/?share-link=4B2A8
Answer:
1. Mitochondria
2. Chloroplasts
3. Cell wall is rigid outer layer providing strength and support, found in plant cells, whereas the cell membrane has a more functional role in communication and cell responses, as well as substance exchange
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?
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.
Do you think the school system is not that challenging?
Trevor is beginning to get bald at a young age. His father is not bald, but his maternal grandfather has been bald for many years. Some of the older people in his community are bald, but very few younger people are bald.
What factor is most likely influencing Trevor's baldness?
A.
his age
B.
inheritance
C.
bad behavior
D.
environment
Answer:
B. Inheritance
Explanation: You can inherit baldness from your mother's side and an maternal grandfather is the father of your mother so it is most likely to be inherited
Using what you know about plate boundaries, explain the tectonic movement that is occurring at the East African Rift Valley, and predict how the area may change in the future.
Answer: The East African Rift Valley (EAR) is a developing divergent plate boundary in East Africa. ... The Nubian and Somalian plates are also separating from the Arabian plate in the north, thus creating a 'Y' shaped rifting system. These plates intersect in the Afar region of Ethiopia at what is known as a 'triple junction'. Hope this helps! <3
The tectonic movement that is occurring in the East African Rift Valley gradually develops plate boundaries within the region of East Africa.
What is the Tectonic movement?The tectonic movement may be defined as the migration of the plates that construct up the surface of the Earth's crust. The Earth is made up of roughly a dozen major plates and several minor plates. These plates are moved due to some extension of pressure applied on them.
Due to this gradual movement of plate tectonics, the area of the region may greatly change from physical as well as climatic perspectives. This is due to the Convection currents that drive the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle.
Therefore, the tectonic movement that is occurring in the East African Rift Valley gradually develops plate boundaries within the region of East Africa.
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2. Plant anatomy is the study of the interior of a plant.
True
False
Explanation:
Plant anatomy is situated between the study of plant morphology and cell biology. Studying plant anatomy allows a student to conceptually integrate organismal structure and function. Further, it helps to reveal the relationships between structure, function, taxonomy, ecology, and developmental genetics. For plants, plant morphology or phytomorphology is the study of the physical form and external structure of plants, whereas plant anatomy is the study of the internal plant structure, mostly at the cellular/microscopic level.
The study of a plant's internal structures is referred to as plant anatomy. Different cell types that are arranged into tissues make up plants.
What is plant anatomy?Plant anatomy is defined as the examination and arrangement of plant cells, tissues, and organs in relation to their growth and function.
It can also be defined as the examination of the cellular and tissue makeup of plant organs.
Typically, when discussing plants, the term "anatomy" refers to the parts that can be seen under a strong light or electron microscope.
It helps us understanding the structural adaptations of plants in relation to various environmental situations is made possible by the study of plant anatomy.
Additionally, it aids in the differentiation of gymnosperms, dicots, and monocots.
Thus, the study of a plant's internal structures is referred to as plant anatomy. Different cell types that are arranged into tissues make up plants.
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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
how does a mushroom get nutrients
Answer:
Mushrooms don't have chlorophyll like plants. They cannot produce their food directly from sunlight. Most mushrooms are considered saprophytes — they get their nutrition from metabolizing non living organic matter. ... Fungi differ from plants and animals on how they obtain their nutrients.
Explanation:
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:
