Answer:
Euglena is a photosynthetic euglenoid with at least 150 described species. The cells are cylindrical with a rounded anterior and tapered posterior.
hope that helps bby<3
Answer:
Euglena are characterized by an elongated cell (15–500 micrometres or 0.0006–0.02 inch) with one nucleus, numerous chlorophyll-containing chloroplasts a contractile vacuole (organelle that regulates the cytoplasm), an eyespot.
Two heterozygous tall plants (Tt) are crossed. What are the expected genotypes and percentages of this cross?
1. TT 50%; Tt 50%
2. TT 25%; tt 75%
3. Tt 25%; TT 50%; tt 25%
4. TT 25%; Tt 50%; tt 25%
Answer:
4) TT 25%, Tt 50%, tt 25%
Explanation:
Two Tt plants cross. Set the Punnett square:
[tex]\left[\begin{array}{ccc}&T&t\\T&TT&Tt\\t&Tt&tt\end{array}\right][/tex]
Based on the given Punnett Square, your expected answer choice will be:
TT 25%, Tt 50%, tt 25%, or 4).
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A man inherits dominant allele for the trait from father and recessive allele from mother. what trait will this man expressed which alleles will his sperm cell contain??
Answer:
Explanation:
The dominant trait, since he has a dominant and a recessive allele.
Sperm cells are haploid, meaning contains only one of the two alleles available, in a random fashion. Therefore on the average, half of his gametes (sperm cells) will have the dominant allele, and the other half will have the recessive allele.
What are two example of animal behaviors and how it affected the survival of the animal species
Answer: What are two example of animal behaviors and how it affected the survival of the animal species
Imagine que uma espécie de mamífero tenha pelagem branca ou preta, sendo a cor preta determinada por um alelo dominante B, e a cor branca, por um alelo recessivo b. Sabendo-se que se trata de uma dominância completa, responda: Em um cruzamento entre um macho e uma fêmea heterozigotos, quais os possíveis genótipos e fenótipos dos filhotes?
1. Macromolecules are the biological molecules necessary for life. Cells need macromolecules for different functions from energy storage to membrane transport Each class of macromolecule serves a different function. Which macromolecule would serve as an energy source for the cell and is used as a component in the cell wall of plants ?
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
(NEED HELP ASAP PLEASE)
Cellulose and starch are macromolecule polysaccharide carbohydrate made of glucose chains. It stabilizes plant cell walls and provides energy. Therefore , option (A) is correct.
What are carbohydrates?Carbohydrates are renowned for their crucial function in plants, which is to provide key sources of energy and carbon skeletons for organic compounds and storage components. Carbohydrates are formed through the process of photosynthesis.
Starches and cellulose are both types of carbohydrates that belong to the larger class of polysaccharides since they are made up of long chains of glucose molecules. Although they are comparable, the human body is only able to make use of starches as a source of energy, whereas cellulose provides structure to plant cell wall.
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1. What is an antigen?
2. Why is it important to match blood types when giving a blood transfusion?
3. Why are people with type O blood called "universal donors"?
4. Who are universal recipients? Why?
I'm trying to hurry I forgot my notebooks at school so please HELP!!!!!!!!!!!!
Answer:What is an antigen?
a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
Why is it important to match blood types when giving a blood transfusion?
The accurate grouping of blood is very important when it comes to having a blood transfusion. If blood is given to a patient that has a blood type that is incompatible with the blood type of the blood that the patient receives, it can cause intravenous clumping in the patient's blood which can be fatal.
Why are people with type O blood called "universal donors"?
Type O-negative blood does not have any antigens. It is called the "universal donor" type because it is compatible with any blood type. ... Minor antigens (other than A, B, and Rh) that occur on red blood cells can sometimes also cause problems. So they are also checked for a match before giving a blood transfusion.
Who are universal recipients? Why?
Type AB-positive blood is called the "universal recipient" type because a person who has it can receive blood of any type. Although "universal donor" and "universal recipient" types may be used to classify blood in an emergency, blood type tests are always done to prevent transfusion reactions.
Explanation:
hope it the right answer and it help you
Which group of organisms in this food web has the greatest available energy?
Answer:
Producers
Explanation:
producers make up most life on earth, be that of plants or algae so they have the greatest amount of available energy overall.
Which type of heterotroph is a mouse?
A. carnivore
B. detrivore
C. herbivore
D. omnivore
Answer:
D
Explanation:
Both mice and rats are omnivores, which means they eat plants and animals, but they tend to enjoy different food items. During times of starvation, a mouse will even eat its own tail!
Studies of autonomic nerve regeneration have demonstrated that Group of answer choices preganglionic fibers show a strong preference for innervating their normal postganglionic targets. only sympathetic fibers can regenerate accurately. regeneration is extremely precise; each preganglionic fiber reestablishes synapses on the exact same postganglionic cells that they previously innervated. autonomic regeneration occurs randomly onto both ganglion cells and target tissues. only parasympathetic fibers can regenerate accurately.
Answer:
only sympathetic fibers can regenerate accurately
Explanation:
Neuroregeneration is a complex biological process associated with the regrowth and/or repair of nervous tissues. This process depends on the type of nerve tissue and how seriously the nerve was injured. The autonomic nervous system, also known as the autonomic nervous system (ANS), is part of the peripheral nervous system (PNS) that is responsible for regulating involuntary physiological processes. The PNS contains two basic divisions: sympathetic and parasympathetic. The sympathetic fibers innervate tissues in nearly all the organ systems and they are responsible for regulating homeostatic processes (e.g., heart rate). The sympathetic nervous system is formed by nerves from the thoracic and lumbar segments of the spinal cord. These autonomic nerves can regenerate after injury in order to reinnervate target tissues (e.g., after chronic cardiac ischemia).
These blood vessels carry waste products, such as carbon dioxide to the heart
A)Artery
B)Vein
C)Capillary
D)Plasma
Answer:
vein is carry co2
b) vein is your answer
Air pollution can affect precipitation by -
A. decreasing rainfall amounts
B. making rainwater more acidic
C. preventing cloud formation
D. preventing evaporation from occurring
In the chloroplast, where does the light independent reaction take place?
Answer:
chloroplast stroma
explaination:
Once the light reactions have occurred, the light-independent or "dark" reactions take place in the chloroplast stroma.
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why are there so many satellites orbiting earth at this time?
Answer:
2,787
Explanation:
Currently there are over 2,787 active artificial satellites orbiting the Earth.
Can anybody help me with this!
which statement best differentiaates between weather and climate
Answer:
Weather refers to short-term atmospheric fluctuations, whereas climate explains the weather in a certain place over a long period of time.
Explanation:
Globally, weather conditions are measured at hundreds of locations every day of the year by observers and automated stations. Some remarks are made every hour, others perhaps once a day. In the long run, these weather observations allow us to quantify average long-term conditions, giving an insight into the climate of the region.
Systemic weather records have been recorded for over 140 years in various places in the United States. We can recognize patterns and trends with these long-term records. And it's our mission to collect, monitor, and arrange these data, as the official repository of the Nation for environmental data, for scientists, decision-makers, and you online.
Which of the options below would be most likely to happen if snails (animals) were added to a clear container (so sunlight can get through) that had a lid placed on top?
1) ATP levels would decrease
2) O2 levels would decrease
3) glucose levels would increase
4) CO2 levels would decrease
The container in which the snails are found will experience a decrease in oxygen level.(Option 2)
What are animals?Animals require to take in oxygen in order to breakdown complex food materials during the process of metabolism. Unlike plants that take in carbon dioxide, animals take in oxygen.
Thus, the container in which the snails are found will experience a decrease in oxygen level.
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ill give the star thingy PLEASE HELP ITS DUE TOMORROW
based on Mr. Kaku's assertion that knowing what the stars are made of is as easy as running starlight through a prism, use the CER method to explain the use of light to determine composition of a star in detail.
Name the process in which a cell develops new sub-cellular structures to let it perform a specific function:
Answer:
Explanation:
In the process of differentiation the stem cells develop different sub-cellular structures to turn into the different types of cells - specialisation. The specialised cells can now carry out their important specific functions - essential for the efficient and healthy viability of any organism.
Cell differentiation is the process in which a cell develops new sub-cellular structures.
What is cell differentiation?It is a biological process in which cells in an entity acquire specialized roles and switch from one cell type to another.During human development, a fertilized egg differentiates into other specialized cells found in the body, such as muscle, neurons, etc. Stem cells are undifferentiated cells. These stem cells can be found in both embryos and adults.What is the purpose of cell differentiation?A single cell gives rise to all cells in multicellular organisms. Cell differentiation is how cells acquire their specific phenotype and functionality at maturity. Cell differentiation results in various cell types that perform essential functions.Why is cell differentiation significant?Occurs when a single cell develops into various tissues and organs.It aids in forming an organism from a single cell zygote.Thus, we can conclude that cell differentiation leads to a cell developing a new sub-cellular structure.
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Which structure is the cytoplasm?
A. B
B. E
C. D
D. A
pls help I'm not sure of the answer I feel like it's
gg X GG
Mary can do a piece of work in 20 days Malaysia is 25% more efficient than her. the number of days taken by Malaysia to do the same piece of work is ?
Answer: 16 days
Explanation:
Given
Mary can do a piece of work in 20 days
Malaysia is 25% more efficient than her. So, she must requires less number of days compared to Mary
No of days Malaysia required
[tex]\Rightarrow \dfrac{20}{1.25}=16\ \text{days}[/tex]
Which of the following facts is the best evidence that humans and salamanders had a common ancestor?
A) Both species eat meat.
B) Both species have pharyngeal arches and slits when they are embryos.
C) Both species can swim.
D) Both species have skin.
Answer:
B
Explanation:
Both have pharyngeal arches and slits when they are embryos. If you look up an image of both embryos you can clearly see this.
Which organelle is labeled l?
Answer:
A
Explanation:
What are the two forms of stored chemical energy produced in the light reactions of photosynthesis?
A. ATP and NADPH
B. ATP and carbon dioxide
C. water and NADPH
Answer:
A. ATP and NADPH
Explanation:
The two forms of stored chemical energy is ATP (Adenosine Triphosphate) and NADPH (Nicotinamide Adenine Dinucleotide Phosphate).
Answer:
A. ATP and NADPH
Explanation:
The light reactions capture energy from sunlight, which they change to chemical energy that is stored in molecules of NADPH and ATP. The light reactions also release oxygen gas as a waste product.
Proteins are important food nutrients. A technician working at a food company is interested in the nutritional content of seeds/nuts. She runs a PAGE with samples from two different seed extracts. She runs multiple lanes of the staples. The gel is stained with Coomassie Blue. Seed extract No. 1 has three faint bands at 25, 30, and 35 kDa. Extract No. 2 has two bands at 25 and 35 kDa, and the bands are very dark. What might she conclude from her results about the nutritional value of the seed extracts
Answer: Sample 1 then, has more variety of proteins but less quantity of each one, while sample 2 has less variety but more quantity of the two proteins present.
Explanation:
Proteins are molecules found in the cells of all living organisms. A protein is composed of monomers called amino acids linked together by peptide bonds. To analyze proteins, a technique called SDS-PAGE (sodium dodecyl sulfate polyacrylamide gel electrophoresis) is used. This technique is used to separate proteins according to their electrophoretic mobility, depending on polypeptide chain length, molecular mass, post-translational modifications and other factors. SDS (sodium dodecylsulfate) is an anionic surfactant compound that breaks non-covalent bonds in proteins, denatures them causing these protein molecules to lose their native conformation and provides the polypeptide with a negative charge that is proportional to the chain length (the number of amino acids) and, therefore, to the molecular mass of the protein. The electrostatic repulsion created by the binding of SDS to the protein is one of the causes of the protein losing its native conformation, thus eliminating the differences in conformation of the different proteins to be separated in the gel.
An electric current is applied to the gel where the proteins are seeded, causing the negatively charged proteins to migrate through the gel in the direction of the anode (positively charged region). Short proteins will move more easily and faster through the pores of the gel, while larger proteins will find it more difficult to do so. After a certain time, the proteins will have migrated according to their size (measured in kDa or kiloDaltons). After electrophoresis, the gel should be stained with Coomassie blue or silver stain, allowing visualization of the separated proteins. After staining, the different proteins will appear as distinct bands on the gel. In addition, the higher the amount of a protein, the more intense the color of its band will be.
Extract No. 1 shows three bands: 25, 30 and 35 kDa. This means that it has three different proteins, each with a different molecular weight. Extract number 2 shows two bands: 25 and 35 kDa. It means that this sample has only 2 proteins. And being bands of higher intensity, we can say that there is more of each protein.
Sample 1 then, has more variety of proteins but less quantity of each one, while sample 2 has less variety but more quantity of the two proteins present.
what is mechanism of photosynthesis
Dimples are dominant, no dimples are recessive. Mr. Dowling is heterozygous for dimples, and Mrs. Dowling is also heterozygous for dimples. What are the possibilities of their offspring? Use the letter D punnet graph
Which hormone only has an effect in females?
oxytocin
prolactin
growth hormone
Answer:
Oxytocin
Prolactin
Explanation:
Oxytoxin ( love drug ) suppresses Uterus and breasts.
Prolactin simulates milk
Earth is tilted at a 23.5 degree angle. Explain how this causes the equator to be hot and the poles to be cold.
Answer:
sunlight
Explanation:
at the angle the earth is at, sunlight hits the equator almost directly, as well as the equator being closer to the sun.
The process of animals relocating to different environments in response to seasonal changes is called:
Explanation:
Many birds, such as geese, seasonally fly to warm places when the weather gets cold. They then return when the weather warms. This process is called migration. ... Migration enables many animals to move to places where it is easier for them to survive.
