Which features make capillaries great for
exchanging substances between the
blood & cells? (select all that apply)
the blood pressure is much lower & the flood
flows slower, allowing time for exchange
they are permeable & allow substances
in/out
they have a very large total cross sectional
area for the exchange
they are only one cell layer thick
Answers
Answer:
All of the following features make capillaries great for exchanging substances between the blood and cells:
The blood pressure is much lower and the flow is slower, allowing time for exchange
They are permeable and allow substances to move in and out
They have a very large total cross-sectional area for exchange
They are only one cell layer thick, which facilitates rapid diffusion of substances across their walls.
Explanation:
Related Questions
______________ memory is our memory for facts and knowledge.
Answers
Semantic memory is our memory for facts and knowledge. Semantic memory refers to our long-term memory system responsible for storing general knowledge and factual information about the world & language.
It encompasses our understanding of words, meanings, ideas, and the relationships between them. Semantic memory allows us to recall facts and information without relying on specific personal experiences associated with them. For example, knowing that Paris is the capital of France or that water boils at 100 degrees Celsius are instances of semantic memory.
This type of memory is distinct from episodic memory, which relates to our personal experiences and events. Semantic memory is essential for cognitive processes such as problem-solving, decision-making, comprehension, and communication. It forms the basis of our general knowledge and plays a fundamental role in various aspects of our daily lives.
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5. Todos los seres
vivos nos nutrimos.
¿Cómo se nutren
los organismos de
las imágenes a y
b? Escríbelo en las
líneas debajo de
cada una.
?
Answers
La pregunta está incompleta porque no permite ver la imagen B. No obstante es posible responderla debido a que existen únicamente dos formas de nutrición en los seres vivos.
Las dos formas de nutrición existentes son la autótrofa y heterótrofa.
La nutrición autótrofa es la que realizan las plantas que realizan la fotosíntesis (proceso mediante el cual se alimentan). En este proceso, las plantas toman la energía solar para alimentarse y obtener energía.
Por otra parte, la nutrición heterótrofa es aquella en la que los seres vivos (que no pueden producir su propio alimento) toman la energía de otras fuentes. Un ejemplo de esto son los animales, que se alimentan de carne o hiervas para obtener energía o los humanos que se alimentan de distintas comidas.
De acuerdo a lo anterior, la respuesta correcta es: Imagen A Nutrición autótrofa.
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Is sulfur a mineral and does it meet the criteria???
Answers
Answer:
Explanation:
Although not an important rock-forming mineral, sulfur is still a crucial resource for human societies. Sulfur is a native element as well as a mineral. Its crystal form consists of transparent to translucent crystals that have an unmistakable deep yellow color.
Answer:
Sulpher is an element ,whose atomic no. Is 16 and atomic mass is 32.it is a non-metal Wich is yellowish in colour.
What is a concentration gradient example?
Answers
The gradual difference in solute concentration in a solution between two regions that are divided by a barrier is referred to as a concentration gradient.
A concentration gradient is established because solutes typically move from areas of higher concentration to areas of lower concentration.
Concentration gradient examples:Diffusion of Oxygen and Carbon Dioxide: During respiration, carbon dioxide diffuses from the blood into the air from the lungs, where its concentrated, while oxygen diffuses from the air in the lungs to the bloodstream, where its concentrations are lower.Ions and nutrients in plants: Nitrate and potassium, for example, migrate from the earth, where they are concentrated more, to the roots, where they are less concentrated.In cells, glucose is transported from the bloodstream, where it is more concentrated, to cells, where it is less concentrated. Glucose transporters, which are found in the cell membrane and carry glucose along its concentration gradient, aid in this process.Drug Delivery: Drugs are delivered to particular areas of the body through concentration gradients.learn more about concentration gradient here
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(c) Many bacterial diseases can no longer be treated with antibiotics. Outline how
antibiotic-resistant strains of bacteria can develop.
Answers
Antibiotics kill or inhibit the growth of susceptible bacteria. Sometimes one of the bacteria survives because it has the ability to neutralize or escape the effect of the antibiotic; that one bacterium can then multiply and replace all the bacteria that were killed off. Exposure to antibiotics therefore provides selective pressure, which makes the surviving bacteria more likely to be resistant.
Number the following stages of a star’s life in the correct order.
Heat and light are emitted because of nuclear fusion.
Formation of a white dwarf.
Formation of a red giant.
Gas and dust inside a nebula are drawn together.
The planetary nebula drifts away.
Answers
The correct order of stages of a star's life cycle is D, C, E, B, and A.
What is the life cycle of a star?A Star begins its life in a nebula. A nebula, or region of gas and dust in space, is where a star is born. When the gas and dust combine to form a protostar, it becomes extremely hot and eventually transforms into a main sequence star.
This phase, which can endure for billions of years, is when nuclear reactions take place and the star glows. This is the life cycle of a star.
Therefore, The correct order of stages of a star's life cycle is D, C, E, B, and A.
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which two cell components have the same function but for different chemical components? question 15 options: lysosome and peroxisome vesicles and mitochondria the golgi apparatus and the nucleus ribosomes and mesosomes
Answers
Two cell components have the same function but for different chemical components are lysosome and peroxisome.
In all eukaryotic cells, lysosomes and peroxisomes are organelles with a wide range of roles. Hydrolytic enzymes (lysozymes) found in lysosomes break down molecules, whereas peroxisomes have enzymes like catalase that break down hydrogen peroxide (H2O2) into water and oxygen and neutralise toxicity. On the other hand, melanin is a substance that helps to shield the skin from damaging UV rays. On the other hand, excessive melanin in humans can cause hyperpigmentation or skin cancer. Though melanin reduction does not imply their synthesis, new substances have already been found to inhibit tyrosinase in melanogenesis.
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ANSWER AND I’LL GIVE BRAINLIEST
Which of the following statements can you infer would happen If one organ system stopped working?
a. The other organ systems would have to work harder to make up for the broken system
b. The other organ systems would stop working too.
c. The other organ systems would still work on their own but might have to work harder to complete their function correctly.
Answers
Answer:
b
Explanation:
After one system shuts down, the others would slowly start to shut down as well until the body can no longer maintain homeostasis and the person would slowly die. 3. All systems would be working together but the main ones would be muscular, nervous, and skeletal.
the main function of the digestive system
Answers
Answer:
break down of glucose to release energy ......
Which famous comedian was diagnosed with narcolepsy?.
Answers
The famous comedian who was diagnosed with narcolepsy is Jimmy Kimmel.
Narcolepsy is a neurological disorder that affects the brain's ability to regulate sleep-wake cycles. People with narcolepsy experience excessive daytime sleepiness and sudden, uncontrollable episodes of sleep called "sleep attacks." Other symptoms may include cataplexy (sudden loss of muscle tone), sleep paralysis, and vivid hallucinations during sleep onset or upon waking up.
Jimmy Kimmel revealed his narcolepsy diagnosis in 2019 during an episode of his talk show, "Jimmy Kimmel Live." He shared his experience of falling asleep during meetings and even while hosting the Oscars. He also described how he underwent a sleep study and was diagnosed with narcolepsy, which he manages with medication and lifestyle adjustments.
Kimmel's public disclosure of his narcolepsy has helped raise awareness about the disorder and reduce the stigma associated with it. It also highlights the importance of seeking medical attention for sleep-related issues and the impact of sleep disorders on daily functioning.
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Compare and contrast the Paleozoic and
Mesozoic Eras in terms of the length of each
era, landmasses, and the life forms that evolved in
each. What is interesting or suprising to you in
each era?
Answers
It must have a significant proportion of plant life that is endemic, or seen anywhere else on the earth, and at least 1,500 leguminous plants.30percent or less of the original vegetation must remain.
Endemics are what in biology?
In biology, the term "endemism" refers to the geographic distribution of a clade that is only present naturally in a narrow geographic area. As a result, species are those only exist in a particular region, such as a mountainous region, lake, or island, among other examples.
What are some instances of endemic species?
species of plants and animals that can only be found in a certain geographic area are known as endemic species.
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Compare the overall excretory process in plants vs animals in terms of ; organs used and are they specialized?
Answers
Answer:
Stomata.
Explanation:
Plants do not have specialized excretory organs like animals. The plant body produces excess carbon dioxide and oxygen which are excreted from the plant through the small opening present on the underside of the leaves called stomata. In the process of photosynthesis, plant produces oxygen and glucose in which glucose is stored in the body whereas oxygen releases through stomata while on the other hand, in respiration process, plant produces carbondioxide gas that is also released through stomata.
Help Pls i need help with these
Answers
Answer:
mark most brainliest have a great day
Explanation:
The town council votes to construct an energy plant on the bank of a large river. It uses river water in its cooling tanks and releases the wastewater back into the river. How might this activity affect the local watershed?
I. The energy plant will likely flood the area during heavy rainfall.
II. The energy plant will likely pollute the water flowing in front of it on the riverbank
III. The energy plant will stop all water flowing through the watershed.
II only
I and III
II and III
I, II, and III
Answers
The construction of the energy plant will likely pollute the water flowing in front of it on the riverbank.
The fact that the energy plant will use the water from the river for cooling means that the water will be exposed to thermal pollution. The increase in the temperature of the water will cause less dissolution of oxygen in the water.
As dissolved oxygen levels drop, the aquatic organisms in the river will become negatively affected due to the resulting oxygen stress and they may begin to die.
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The ____________________ endoplasmic reticulum has a role in transporting proteins to different compartments in the cell.
Answers
Answer:
The rough endoplasmic reticulum works with the Golgi apparatus to move new proteins to their proper destinations in the cell. The membrane of the RER is continuous with the outer layer of the nuclear envelope. Smooth endoplasmic reticulum does not have any ribosomes attached to it, and so it has a smooth appearance.
Explanation:
The rough endoplasmic reticulum has a role in transporting proteins to different compartments in the cell.
What is Protein transporting?Protein transporting may be defined as a process through which proteins are transported from one cellular organelle to another after being synthesized in the rough endoplasmic reticulum along with the Golgi complex.
Due to having ribosomes on their surface, the rough endoplasmic reticulum is known as the site of protein synthesis. Due to the presence of ribosomes, their surface is not as smooth as compared to the smooth endoplasmic reticulum.
The protein after synthesis packed into the spherical-shaped vesicles which are then fused with the membrane of a specific cell organelle in order to function properly.
Therefore, the rough endoplasmic reticulum has a role in transporting proteins to different compartments in the cell.
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how is soil formed step by step
Answers
Answer:
Bedrock, Parent Material, Subsoil, Surface, Organic
Explanation:
If you want more in depth use this answer:
First, soil starts as rock. Then, bigger rocks get broken down into smaller pieces of rock. After that, this does not become dirt, it starts to form soil. Last, all decaying plants and animals will mix with the rocks and form soil.
Fossils are often hardened remains of organisms that once lived, such as a bone or tooth. Which characteristic of sedimentary rock makes
it likely for fossils to be found in this type of rock?
A. An organism's remain become hardened when covered by melted rock.
B. Organisms are changed into rock by high temperature once they are no longer living.
C. The remains of organisms are buried under layers of sand, shells, and bits of rock.
D. The bones of an organism are pulled below Earth's surface during an earthquake.
Answers
Answer:
C as most fossils are created in the ocean
Explanation:
If i'm wrong please tell me if i'm right please mark me brainliest
Examples of flat bone
Answers
There are flat bones in the skull (occipital, parietal, frontal, nasal, lacrimal, and vomer), the thoracic cage (sternum and ribs), and the pelvis (ilium, ischium, and pubis). The function of flat bones is to protect internal organs such as the brain, heart, and pelvic organs.
Answer:
Explanation:
which of the following elements is a metalloid
A. sulfur
B.iron
C.silicon
D.copper
Answers
Answer:
The answer is C. Silicon
Explanation:
The term is normally applied to a group of between six and nine elements (boron, silicon, germanium, arsenic, antimony, tellurium, and possibly bismuth, polonium, astatine) found near the center of the P-block or main block of the periodic table
What is a placenta?
A. A ball of about 100 cells
B. A structure that nourishes the fetus
C. An unfertilized egg
D. Is sperm fused with an egg
Answers
Answer:
a atructire that nourishea the fetus
Put these terms in order from smallest to largest
Tissues
Organs
Organ System
Organism
Answers
A strain of fruit fly lacks the ability to produce Dicer- 2 protein. You might expect this strain to be more susceptible to _______ infections. A. viral B. bacterial C. fungal D. protozoan
Answers
A strain of fruit flies lacks the ability to produce Dicer- 2 protein. You might expect this strain to be more susceptible to A. viral infections.
Infections happen when a microorganism enters someone’s body and causes damage.
The microorganism makes use of that person’s body to sustain itself, reproduce, and colonize. These infectious microscopic organisms are referred to as pathogens, and they can multiply quickly. Examples of pathogens consist of:
microorganismvirusesfungiThe immune system is an effective barrier to infectious sellers. but, pathogens might also every so often overwhelm the immune system’s capacity to fight them off. At this level, contamination turns into danger.
A few pathogens have little impact in any respect. Others produce pollutants or inflammatory materials that cause negative responses from the body. This alteration manner that a few infections are mild and barely important, whilst others may be excessive and existence-threatening. A few pathogens are proof against the remedy.
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What were the four examples of autotrophic organisms?
Answers
Answer:
Plants, coral, bacteria, and algae do this. Bacteria is a more recent find in the process of photosynthesis with primary producers, as they were just discovered in the soil. During photosynthesis, primary producers take energy from the sun and produce it into energy, sugar, and oxygen.
Explanation:
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Position (m)
12
10
8
6
4
2
0
Position vs Time
2
4
6
Time (s)
8
10
12
Based on the graph, describe what is happening
between 4 and 6 seconds.
The object is moving away from the startata
constant speed.
The object is not moving.
The object is returning to the start at a constant
speed.
The object is changing speed.
Answers
Based on the graph, between 4 and 6 seconds time intervals, the object is stationary and not moving.
Between 4 and 6 seconds, according to the given position vs. time graph, the object's position remains constant at 4 meters. This means that there is no change in the object's displacement during this time interval, indicating that it is not moving.
The flat line on the graph between these two points indicates a steady position, suggesting that the object has come to rest or is stationary.
There is no indication of acceleration or velocity changes during this period, reinforcing the conclusion that the object is at a standstill. Therefore, the object is not changing its position or speed and can be described as not moving between 4 and 6 seconds.
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True or false? If you look at the brain of an Alzheimer’s patient after autopsy, you’ll see lots of gaps in the grey matter and enlarged ventricles – both from atrophy of the brain cells (shrinkage).
True
False
Answers
The statement given "If you look at the brain of an Alzheimer’s patient after autopsy, you’ll see lots of gaps in the grey matter and enlarged ventricles – both from atrophy of the brain cells (shrinkage)" is true because in Alzheimer's disease, the brain undergoes significant changes, including the atrophy or shrinkage of brain cells.
This atrophy leads to the development of gaps or "plaques" in the grey matter of the brain. These plaques are formed by the accumulation of beta-amyloid protein. Additionally, Alzheimer's disease can cause the enlargement of the ventricles, which are fluid-filled spaces within the brain. The enlargement of the ventricles is a result of the loss of brain tissue and the shrinkage of brain cells. Therefore, if you were to examine the brain of an Alzheimer's patient after autopsy, you would indeed observe gaps in the grey matter and enlarged ventricles.
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You are studying the amino acid sequence of a protein shared by four organisms. You
want to know which organism is most closely related to organism A. You have data
that shows the number of amino acid differences between organism A and each of
the other organisms. Study the data in the chart and use it to answer the question.
Which organism does this data suggest is most closely related to organism A?
A)Organism C
B)Organism D
C)Organism B
Answers
Answer:
C. orgasm D
Explanation:
because the less number of difference the more closely related it is to organism A
Which conclusion is MOST STRONGLY supported by the data in the table?
A- Plants develop polyploidy only through selective breeding.
B- Plants may naturally increase their ploidy levels with each generation.
C- Plants can't survive 3, 4, or 5 times the haploid number of chromosomes,
D- Introducing polyploidy to plants can increase certain desirable traits.
Answers
The conclusion that is MOST STRONGLY supported by the data in the table is "D- Introducing polyploidy to plants can increase certain desirable traits."
option D is correct.
The table shows that introducing polyploidy in plants can increase the size of the leaves, cells, fruits, flowers, and seedless fruits.
Therefore, we can conclude that polyploidy can improve certain desirable traits in plants. This is also supported by the fact that many plants that are grown commercially are polyploid, which is an evidence that introducing polyploidy in plants has its advantages.
Option A is incorrect as polyploidy can be developed naturally.
Option B is not the MOST STRONGLY supported conclusion as it is not always the case that plants will increase their ploidy level with each generation.
Option C is incorrect because many polyploid plants exist and are able to survive with a higher chromosome number.
option D is correct.
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Someone please help me with biology ASAP.
Answers
Answer:umm what y need help with ???
Explanation:
Corn snakes show variety in their skin color pattern. While the complete genetics of corn
snake color are complex, the most common colors on normal corn snakes—red and
black— are each coded by one gene.
For the red gene, the allele for the presence of red pigment (R) is dominant and the allele
for the absence of red pigment (r) is recessive. Likewise, for the black gene, the allele for
the presence of black pigment (B) is dominant and the allele for the absence of black
pigment (b) is recessive.
a. Draw the Punnett square for the cross of a snake that is homozygous dominant for
the red color with a snake that is heterozygous for the red color. What percentage
of the offspring is expected to have red pigment in their skin?
b. Draw the Punnett square for the cross of two snakes that are heterozygous for the
black color. What percentage of the offspring are expected to have black pigment
in their skin?
c. The parent snakes in part (b) that are heterozygous for black color are both
homozygous recessive for the red gene. Each parent has genotype rr for the red
gene. Based on this information, what percentage of their offspring are expected
to lack both the red and black pigments in their skin? Explain your reasoning.
Answers
Answer:
a. Punnett square for the cross of a snake that is homozygous dominant for the red color (RR) with a snake that is heterozygous for the red color (Rr):
```
| R | R |
----------------
| RR | RR | RR |
----------------
| Rr | Rr | Rr |
```
In this cross, all the offspring (100%) will have the red pigment in their skin because the presence of red pigment (R) is dominant over its absence (r).
b. Punnett square for the cross of two snakes that are heterozygous for the black color (Bb):
```
| B | b |
----------------
| BB | BB | Bb |
----------------
| Bb | Bb | bb |
```
In this cross, 75% of the offspring are expected to have black pigment in their skin (BB and Bb genotypes), and 25% of the offspring are expected to lack black pigment (bb genotype) due to the absence of the dominant black allele (B).
c. Both parent snakes are homozygous recessive for the red gene (rr), meaning they lack the red pigment. Since the red gene and black gene are independent of each other, the absence of red pigment does not affect the inheritance of the black pigment. Therefore, the percentage of offspring expected to lack both red and black pigments in their skin would be the same as the percentage of offspring lacking the black pigment (bb genotype) in the Punnett square from part (b). Thus, 25% of their offspring are expected to lack both the red and black pigments in their skin.
what structure is the outermost, dense covering around bone?
Answers
Answer:
The outermost, dense structure covering around the bone is the periosteum.
Explanation: