Answer:
Explanation:ik ben een appel, boterham
Why do structural similarities between living things point to common ancestry?
Explanation:
Comparative anatomy is the study of the similarities and differences in the structures of different species. Similar body parts may be homologies or analogies. Both provide evidence for evolution. ... The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor.
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.
please answer this for me
Answer:
THE ANSWER IS D!!!!!!!!!!!
Explanation:
Which of the images below depicts a healthy reef ecosystem?
Image A, B, C, or D?
Answer:
A is the answer i think because it has more reef
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.
Macroevolution occurs within a population.
Answer:
Unsure what this is asking but yes, it does.
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
what is mechanism of photosynthesis
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.
hope this helps!
Garlic mustard has been introduced to the beetles ecosystem. Describe what would happen to the beetles population as a result and explain why.
Answer:
It would collapse
Explanation:
Garlic mustard also produces root exudates that inhibit the growth of important soil fungi and leaf chemicals that kill native butterfly larvae that feed on the plant
In addition, invertebrates and other consumers that rely on these natural plant species for food are harmed by the spread of this invasive "weed". Garlic mustard also produces root exudates that inhibit the growth of important soil fungi and leaf chemicals that kill native butterfly larvae that feed on the plan
Garlic mustard is an invasive plant species that is known to negatively impact native plant populations in ecosystems.
What is invasive plant?An invasive plant is a non-native plant species that is introduced to an ecosystem and has the ability to spread and negatively impact native plant and animal populations.
Garlic mustard is known to release chemicals that inhibit the growth of other plant species, including some that the beetles may rely on for food.
This could lead to a reduction in food availability for the beetles, which may cause a decline in their population.
Additionally, if the beetles are not adapted to feeding on garlic mustard, they may not be able to digest or utilize the plant efficiently, leading to further declines in population.
Thus, the impact of garlic mustard on the beetle population will depend on the specific beetle species and the extent to which they rely on native plant species for food.
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Ment. Mastery Test
Submit Test
4
Select the correct answer from each drop-down menu.
Sally has a large yard around her house. How could she use that to live more sustainably?
Sally has a large yard around her house. She could do some
food scraps to avoid the use of chemical fertilizers.
y to grow her own produce and
with her
Reset
Next
Answer:
I don't know all of the answers in the menu, but I think that she could grow her own food, for one thing, and she could use the space to compost foods she doesn't eat for natural fertilizer.
Explanation:
I'm grabbing at straws here, I hope this answer helps.
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
Which organelle is labeled l?
Answer:
A
Explanation:
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.
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 data can we collect on natural hazards?
Some functions of cellular organelles are given below.
a)Protein synthesis
b)Cellular respiration
c)Detoxify certain compounds
The organelles that perform the above functions are given respectively in which option?
(a) Mitochondrium,
Ribosome, Plastid
(b) Ribosome,
Mitochondrium, Endoplasmic
Reticulum
O (c) Ribosome, Golgy body,
Endoplasmic reticulum
(d) Ribosome, Plastid,
Endoplasmic reticulum
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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what is annual, biennial and perennial?
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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Describe how the jump rope could be used to model the cell membrane of a plant
cell.
Answer: Plants can use the energy from sunlight to turn water and carbon dioxide into. When the cell has enough organelles to make two cells, the division process starts. Let's discuss the process of photosynthesis again, this time taking a closer look at it. Just A long rope to represent the cell wall.
Jump rope is thin and elastic which is made by twisting two threads together which somewhat looks like a cell membrane can be used as a model for plant cell membrane.
What is cell?"The cell is structural and functional unit of life."Every organisms are made up of one or more number of cells.Each cell have various organelles that perform specific functions.What is cell membrane?"It is the outer layer of cell that separates interior of the cells to their surroundings."It is thin and flexible.Cell membrane is composed of bilipid layer in which proteins are embedded on it.It act as a semi-permeable membrane that only only specific molecules to pass through it.Hence, the thin and elastic nature of jump rope could be used to model the cell membrane of a plant cell.
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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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Fossil fuels deep in the earth act as a carbon reservoir, storing it for millions 1 point
of years. What happens when humans extract and burn fossil fuels for
energy?
Carbon Dioxide levels increase in the atmosphere
Oxygen levels in the atmosphere decrease
There is more oxygen in the atmosphere
Carbon Dioxide is removed from the atmosphere
What elements make up most of the earth's.
Answer: By burning fossil fuels, people are changing the carbon cycle with far-reaching ... The rest is in the ocean, atmosphere, plants, soil, and fossil fuels. ... Graph of oxygen isotope ratios in the deep ocean for the past 67 million years. ... The increased temperature results in higher evaporation rates and a wetter ...
Explanation:
An estuary is _______.
a.
a freshwater biome
b.
an area with a low concentration of minerals and nutrients
c.
characterized by deep water
d.
an ecotone
Please select the best answer from the choices provided
D IS CORRECT
Answer:
An estuary is _______.
a.
a freshwater biome
Identify the indentation that is inferiorolateral to the auricular surface. Identify the indentation that is inferiorolateral to the auricular surface. Greater sciatic notch Pubic tubercle Acetabulum Ischial spine
Answer:
The correct answer is - Greater sciatic notch
Explanation:
The greater sciatic notch is a notch in one of the pelvic bones n the human called the ilium. It is located between the posterior inferior iliac spine, and the auricular surface or ischial spine. It is the passageway through the pelvis into the thigh and posterior side.
Answer:
Greater sciatic notch
Explanation:
The greater sciatic notch allow the sciatic nerve to enter the thigh
¿Qué es y a qué se dedican las ciencias naturales?
Answer:
can u put that in english plz bc i dont understand you
Explanation:
Answer:
sorry I can't understand
but have a great day lol
pls help I'm not sure of the answer I feel like it's
gg X GG
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?
Cuando una celula se va a dividir, la cromatina se contrae y compacta y forma estructuras como la que se ve al lado. Diga qué nombre reciben estas estructuras y cuantas hay en una célula humana
Answer:
cromosomas
Explanation:
Los cromosomas son moléculas lineales de ADN que contienen parte o todo el material genético de un organismo. El ciclo celular se divide en dos etapas: 1-interfase o etapa de 'no división' y 2-división celular. Durante la interfase, las fibras de cromatina no poseen un grado de condensación suficiente como para hablar de cromosomas. Durante la primera etapa de división celular (es decir, durante la profase), las fibras de cromatina se condensan para formar estructuras compactas conocidas como 'cromosomas' los cuales serán distribuidos entre células hijas. Las células somáticas de los seres humanos son diploides (2n = 46 cromosomas), esto significa que contienen 23 pares de cromosomas homólogos los cuales se alinean durante la metafase de la mitosis en la placa ecuatorial de la célula para ser distribuidos equitativamente entre células hijas durante las fases posteriores del ciclo celular (anafase, telofase y citocinesis). Por otra parte, las células germinales o gametos (espermatozoides masculinos y los óvulos femeninos) son haploides (n = 23 cromosomas) las cuales contienen un sólo set completo de cromosomas.
