Answer:
removal of aged and damaged red blood cells from the blood
Explanation:
Spleen is an organ found in vertebrates and it is located in the upper part of the abdomen that act majorly to filter blood. It recognizes and removes old, malformed, or damaged and aged red blood cells. When blood flows into the spleen, the spleen performs "quality control"; the red blood cells must pass through a maze of narrow passages.
The bone marrow is a spongy tissue that produced red blood cells and this perform similar function as the spleen except that it cannot remove aged and damaged red blood cells from the blood this is because it does not have the ability to remove age and damage red blood cells due to inability to support the immune system.
The spleen help remove age and damage red blood cells thereby boosting the immune system in fighting against infections ,preventing blood clot .
Non-polar molecules such as oxygen, carbon dioxide, and some vitamins
can easily cross the phospholipid bilayer.
A
True
B
False
Answer:true
Explanation:
The current taxonomic system that taxonomists use (and that we are using during our Summer session) follows a taxonomic scheme that recognizes _____ (a number) Kingdoms in the Domain Eukarya (also spelled Eucarya).
Answer:
The correct answer is - 4 kingdoms.
Explanation:
According to the current classification or taxonomic system used by many taxonomists is the modern Linnean classification system and according to this, there are four kingdoms Protista, Fungi, Plantae, and Animalia in the domain eukarya. there are two more kingdoms in prokaryotes that are monera and archaebacteria
Thus, the correct answer is - 4 kingdoms.
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
What is the cause of humanity?
Explanation:
the cause of humidity is the various thought of the people
Gentoo penguins present a potential mate with a pebble. Emperor penguins have a specific call and movement that they make to attract a mate. Which type of isolation do these penguins demonstrate?
Answer:
The correct answer is - behavioral isolation.
Explanation:
Behavioral isolation is a type of isolation that take place in case of different mating behaviors development that can not be recognized or preferred by the other members of the same species or population share same environment.
The most common example of behavioral isolation is difference in matting calls of the members of the same species present in same geographic area such as Gentoo and Emperor penguins.
Thus, The correct answer is - behavioral isolation.
Answer:
the answer is b
Explanation:
100% edg test 2020
Which feature on its head has a structure that enables the animal to feel
objects in its surroundings?
O A. Eyes
O B. Nostrils
C. Ears
D. Whiskers
Carbonic anhydrase inhibitors cause less movement of carbonic acid toward carbon dioxide production and are used as a prophylactic treatment of altitude sickness. Altitude sickness occurs when a hiker ascends to altitudes where the density of oxygen is low. How does this decrease the symptoms of high altitude sickness?
A) The excess hydrogen ions are excreted in the urine and the resulting loss of acidity increases respiration rate.
B) The excess bicarbonate ions are excreted in the urine and the resulting loss of blood pressure increases respiration rate.
C) The excess bicarbonate ions are excreted in the urine and the resulting increase in blood acidity leads to an increase in ventilation.
D) The excess bicarbonate ions in the blood increase the affinity of hemoglobin for oxygen.
Answer:
The excess bicarbonate ions are excreted in the urine and the resulting increase in blood acidity leads to an increase in ventilation.
Explanation:
In four to eight sentences, trace the flow of carbohydrate macromolecules through a rain forest ecosystem. State how the marcomolecules are produced, how they are passed along, and what they are eventually used for. In your answer, give specific examples of macromolecules.
Answer:
Carbohydrate is a big source of energy for all living organism on this planet.
Explanation:
The carbohydrate which is a macro-molecule is produced by the producer such as trees and shrubs etc in the process of photosynthesis. These carbohydrates transfer to the primary consumer such as monkey who eat these plants. When the secondary consumer such as jaguar eat these primary consumer, this carbohydrate again transfer from one organism to another organism. This carbohydrate is a source of energy which is broken down in the stomach into glucose and this glucose is absorbed by the cells and releases energy by mitochondria in the form of ATP. This energy is used in various activities such as walking, running and breathing etc. Carbohydrate, proteins and fats are the examples of macro-molecules.
Answer:
hi
Explanation:
Using your answers from Part 2, trace the path that energy flows in the ecosystem. What evidence does this give you about where energy in an ecosystem comes from?
The tail portion of an individual phospholipid molecule: Please choose the correct answer from the following choices, and then select the submit answer button. is hydrophobic and nonpolar. is hydrophilic and nonpolar. is hydrophobic and polar. is hydrophilic and polar. contains bonds with unequal sharing of electrons.
Answer:
The correct answer is - hydrophobic and nonpolar.
Explanation:
Phospholipids are amphipathic molecules which means they show the both hydrophobic and hydrophilic properties. This property is due to the fact that they have a phosphate head that is hydrophilic, and polar while there are also two hydrophobic nonpolar fatty acid tails.
The fatty acid chains have a cis double bond and are the uncharged, nonpolar tails, which are hydrophobic.
Thus, the correct answer is - hydrophobic and nonpolar.
10.La respiración vegetal involucra un conjunto de reacciones celulares por las cuales carbohidratos sintetizados por la fotosíntesis son oxidados a C02 y H20. En este proceso, la energía liberada se transforma en Su mayoría en ATP y compuestos de carbono intermediarios precursores de la síntesis de aminoáci- dos y compuestos nitrogenados derivados, entre otros. Podemos deducir de lo anterior que en el proceso de crecimiento de las plantas, la fotosíntesis y la respiración A. Se complementan en beneficio del crecimiento de la planta. B. Son procesos independientes para asegurar la subsistencia de la planta. C. Se alternan para garantizar que la planta tenga energía en todo mo- D. Ocurren simultáneamente para que permanentemente.
Answer:
La opcion mas correcta seria : "Se complementan en beneficio del crecimiento de la planta"
Explanation:
En la respiracion de los vegetales o plantas, obtienen como resultado dioxido de carbono y agua, estos dos productos luego son utilizados en la fotosintesis para poder formar la unidad energetica que es la glucosa y asi generar el autoabastecimiento alimenticio.
While synthesizing a new blue pigment, a chemist notices that the new compound accumulates between an aqueous (water) environment and a hydrophobic environment. When added to a mixture of oil and water, the pigment creates a blue ring around the droplets of oil. Which of the following statements best describes this new pigment?
A. The pigment is amphipathic, having polar and nonpolar regions.
B. The pigment is probably hydrophobic and is attempting to bond with the oil.
C. The pigment is hydrophilic and will not form hydrophobic bonds with the oil.
D. The pigment is a polar molecule and is forming hydrogen bonds with both the water and oil molecules.
E. The pigment is neither polar or nonpolar, but is apolar.
Answer: C
Explanation:
Does not build hydrophobic bonds with oil because it is hydrophilic.
Hope it helps :)
Which statement best describes genetic material?
A. A single gene contains hundreds of proteins that have the code for
making more genes.
B. Chromosomes are sections of DNA that have the codes for amino
acids
C. Genes are made up of chromosomes that are packaged tightly in
DNA
D. A single gene has the code for the series of amino acids that
makes a protein.
Answer:
D. A single gene has the code for the series of amino acids that
makes a protein.
Explanation:
Genes are functional units of heredity and they are made of DNA that is packaged in components called chromosomes.
Each gene carry a genetic code which codes for the series of amino acid creating a specific protein. In general, the genetic code specifies 20 standard amino acids that form proteins.
Hence, the best statement describes genetic material is "D" and other given options are incorrect.
Glycoproteins:___________.
a. contain unbranched oligosaccharides.
b. are a small fraction of the total number of proteins in a human cell.
c. are many of the cell surface and extracellular proteins.
d. have oligosaccharides covalently attached to aspartate residues.
Answer:
[tex]\boxed{Option \ D}[/tex]
Explanation:
Glycoproteins have oligosaccharides covalently attached to aspartate residues (type of amino acids) . They are not unbranched oligosaccharides.
Answer:
[tex]\boxed{\mathrm{Option \: D}}[/tex]
Explanation:
Glycoproteins have oligosaccharides covalently attached to aspartate residues.
They are proteins which contain oligosaccharide chains that are covalently attached to the amino acid side-chains.
Wheat varieties are usually purelines because Group of answer choices there is little available genetic variation in wheat germplasm breeders do not want farmers to save their own seed the potential for exploiting hybrid vigor in wheat is limited wheat is predominantly outcrossing
Answer:
little available genetic variation
Potential for exploiting hybrid vigor in wheat is limited wheat is predominantly outcrossing
Explanation:
Pure lines are varieties with little genetic variation. Pure lines are generated from crops that have undergone selection to the point of uniformity this is done to reduce variation that may occur genetically and to get varieties that are the same genetically.
Pure lines are they are the same genetically with no segregating genes. variation or changes in pure lines is mostly associated with the environment. wheat is an outcrossing crop generating a pure line will help have good vigour as selection would have been done to generate varieties that are strong and high yielding.
Recall that two hydrogen bonds bind A and T, but three hydrogen bonds bind G and C. Because the
stability of DNA is affected by the number of hydrogen bonds, with more bonds promoting more
stability, which double-stranded DNA molecule would likely have the greatest stability?
a. A molecule with 20 percent A
b. A molecule with 26 percent G
c. A molecule with 32 percent C
d. A molecule with 38 percent T
e. More information is required to answer this question.
Answer:
C
Explanation:
Answer:
c. A molecule with 32 percent C
Explanation:
Assume that the point mutation and deletion mutation are not in overlapping regions of the phage genome. What phage recombinants would you expect if a crossing-over event occurred between the regions of the two mutations?
Answer:
A recombinant phage containing both mutations.
Explanation:
A recombinant organism is produced by recombination, which is a genetic phenomenon associated with the repair of double-strand breaks in DNA. In genetic research, recombinant organisms are used to investigate target gene expression. The process of DNA repair may be associated with two different pathways: homologous recombination (HR) and non-homologous end-joining (NHEJ). In this case, the recombinant phage contains no overlapping mutations (i.e., both deletion and point mutations), thereby carrying the desired genetic combination.
The graphic below shows how photosynthesis and cellular respiration are related.
Answer:
Humans and animals both are depend on the cellular respiration. When o2 is released by plant is inhaled by animals and humans and exhale carbon dioxide.
Explanation:
Oxygen is stored during photosynthesis and produce oxygen in cellular respiration. Carbon dioxide and water are used in photosynthesis released cellular respiration. The energy that is releases during photosynthesis is stored by the process of cellular respiration. Glucose is broken down during the process of photosynthesis, to produce the food in cellular respiration.
The relationship shows that both are reactant to each other. The photosynthesis used sunlight , water and carbon dioxide to produce the glucose. The cellular respiration used that oxygen and water to produce carbon dioxide.
A science student makes the following statement:
If ferns need warm weather to grow, ferns in the warmer
areas will grow faster.
What is the student doing?
A. Conducting an experiment
B. Drawing conclusions
C. Forming a hypothesis
ОО
D. Making a prediction
Answer: D. Making a prediction
what's known as meninges
Answer:
it is the three membranes that enclose the vertebrae brain and spinal cord.
Answer:
the three membranes (the dura mater, arachnoid, and pia mater) that line the skull and vertebral canal and enclose the brain and spinal cord
Explanation:
is an explanation required, I explained what it's known as
Several centers (and their associated motor tracts) in the cerebrum, diencephalon, and brainstem, which may issue somatic motor commands as a result of processing performed at a subconscious level, were long known as the ________, but is actually now considered inaccurate and misleading.
Answer:
The correct answer is "reticular formation".
Explanation:
The missing options of this question are:
A) medial lemniscus
B) pyramidal system
C) anterolateral system
D) reticular formation
E) extrapyramidal system
The correct answer is option D) "reticular formation".
The term "reticular formation" was coined to mention a set of interconnected nuclei located along the brainstem, including the cerebrum, diencephalon, and the brainstem itself. Nowadays this term is considered inaccurate and misleading, since it was never well defined and some authors may include some structures that other author do not consider as part of the "reticular formation".
Which are three requirements for forming petroleum?
Answer:
i think it is oxygen, heat, steam heat.
Explanation:
What affect will adding sugar have on the viscosity of water? As a real-world application, how can this experiment be beneficial? What is the purpose of the lab?
Answer:
If you add more sugar to water than the viscosity will be more intense, The independent variable is the amount of sugar you add to the water, The dependent variable is the viscosity of water. The control variables are the source of water, the temperature of the water, and the amount of water.
Hope this helps, have a nice day!
Match each of the following brain structures with its description: _________.
a. Arachnoid mater:
b. Subarachnoid space:
c. Cerebral aqueduct:
d. Arachnoid villus:
e. Pia mater:
f. First and second ventricles:
g. Fourth ventricle:
h. Apertures:
i. Third ventricle:
j. Dura mater:
k. Interventricular foramina:
l. Superior sagittal sinus:
1. middle menninx.
2. located between the arachnoid mater and the pia mater.
3. connects third ventricle and fourth ventricle.
4. passageway for cerebrospinal fluid between fourth ventricle and subarachnoid space.
5. meninx that follows every convolution of brain.
6. lateral ventricles.
7. ventricle associated with the diencephalon.
8. structure that projects through dura mater into arachnoid mater.
9. ventricle located between brainstem and cerebellum.
10. outermost meninx.
11. connect the lateral ventricles and the third ventricle.
12. collects venous blood and cerebrospinal fluid.
Answer: Please see expalnation column for answer
Explanation:Matching the following brain structures with its description gives
1.Arachnoid mater – Middle meninx
2. Subarachnoid space - located between the arachnoid mater and the pia mater.
3. Cerebral aqueduct - connects third ventricle and fourth ventricle.
4.Arachnoid villus -structure that projects through the dura mater into arachnoid mater
5. Pia mater - Meninx that follows every convolution of the brain.
6. First and second ventricles – Lateral Ventricles
7. Fourth ventricle - ventricle located between brainstem and cerebellum.
8. Apertures - passageway for cerebrospinal fluid between fourth ventricles and subarachnoid space
9.Third ventricle - ventricle associated with diencephalon.
10. Dura mater – Outermost meninx
11. Interventricular foramina - Connects the lateral ventricle and third ventricle
12. Superior sagittal sinus - Collects venous blood and cerebrospinal fluid.
PLEASE HELP ASAP
What are the three stop codons? What is the start codon?
Answer:
UAA, UGA and UAG are the stop codons.
And AUG or methionine is the start codon.
Explanation:
Hope it helps.
Two plants that are pure bred are crossed. One is short and one is tall, Tall is dominant. If two of their offspring are crossed, what are the
expected phenotypes for the next generation of offspring (F2 generation)?
A. 50% tall, 50% short
B. 100% tall
C. 75% tall, 25% short
D. 100% short
Answer:
C
Explanation:
after doing the genetic cross the parents will be TT so when you cross you get all are Tt if you cross F1 you get a ratio of
1tall:2heterozygous tall:1short
so tall are 75%and short is 25%
The answer to this question is option c. When two of their offsprings are crossed the expected phenotypes for f2 is 75% tall and 25% short.
When a tall and short plant are crossed together. All the plants that are their offspring would all be tall, T.
These offspring are the result of the first crossing. They all now have there genes as TS from their parents TT and SS gene.
When these off springs are crossed, they would have some off springs that are tall and some that are short. This is going to be a crossing of TS and TS. Given that they all possess the tall and short gene.
The ratio of tall to short children they would have according to Mendel is 3:1.
75% : 25% = 3:1
The tall pants are dominant
In conclusion when we divide 75 by 25 we get a ratio of 3:1. This is the ratio of expected phenotypes for The second generation.
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Types of Cells Comparison Chart Plant Cells Animal Cells What both types of cells have in common
Answer: Plant and animal cells are both eukaryotic cells, so they have several features in common, such as the presence of a cell membrane, and cell organelles, like the nucleus, mitochondria and endoplasmic reticulum.
Explanation:
Which characteristic is one of the three main characteristics used to classify igneous rocks?
Answer: Texture
Explanation: the rate at which the rock had cooled when molten magma was cooling gives out a clear comparrison of the rocks which is the texture
Answer:
Explanation:
Texture
Although there is a one in 4 million chance that all of the chromosomes in one parent could come entirely from one grandparent, chances are high that grandchildren will receive a mix of chromosomes from both maternal and both paternal grandparents. True or False
Answer:
it is true 10000% sure
hope i helped
-lvr
Which best describes a situation in which an archer's aim was precise but not accurate?
A.a group of arrows that are all relatively near the target but are not close to each other
B.a group of arrows that are close to each other but not near the target
C.a group of arrows that are all right on the bullseye of the target
D.a group of arrows that are not near the target or each other
Answer:B
Explanation:
when any arrow will be close to mean(center)position it will be accurate
Answer:
a group of arrows that are all right on the bullseye of the target
Explanation:
Choose one of the two major phases of photosynthesis. Draw a model of that phase that corrects one of the weaknesses in the student’s original model.
Answer:
Choosing light dependent phase of the photosynthesis process.
Explanation:
When the sunlight falls on the leaves of the plant, Light is absorbed by the leaves. The photosystem II captures or traps the photons of the light that leads to electrons of a chlorophyll in excited state with a very large energy charge.
Primary electron acceptor traps the excited electron and simultaneously electrons captured from the water as well. Electrons then move to the PSI (photosystem I) through cytochrome b6f. At the photosystem I these electrons result in the energy imbalance, the electrons that are captured by electron acceptor again that move it to ferredoxin that take them for the production of ATP to ATP synthase.
Answer:
Hope this helps :)
Explanation: