Answer:
The Earth has different compositional and mechanical layers. Compositional layers are determined by their components, while mechanical layers are determined by their physical properties. The outermost solid layer of a rocky planet or natural satellite. The Earth has an outer core (liquid) and an inner core (solid).
Explanation:
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Explain why the sperm cells differ from other cells in the male
sperms are gametes (reproductive cells) which have half the number of chromosomes (22 autosomes +1 sex chromosome) .Those cells have 23 chromosomes only as their nucleuse fuses *during fertilization* with the ovum's nucleuse which has 23 chromosomes as well . Also it has a special structure which makes it adapted for movement since it's a mobile cell
what insects don't have piercing and sucking mouth parts?
.
Answer:
lice
Explanation:
they bite and chew on their host skin
What are S-strain and R-strain bacteria?
Answer:
When Frederick Griffith discovered two strains of Streptococci in 1923, the bacteriologists were intrigued by the differences between them: the S (smooth) strain, which produces colonies that are smooth and shiny on a lab plate; the R (rough) strain, which lacks a polysaccharide coat and produces colonies that are rough and irregular on a lab plate.
Explanation:
In angiosperm double fertilization, one sperm nucleus fertilizes the ______ to form the diploid ______, and a second sperm nucleus fuses with the two nuclei in the central cell of the embryo sac.
Answer:
one sperm fertilizes the egg cell, forming a diploid zygote
Explanation:
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In angiosperm double fertilization, one sperm nucleus fertilizes the egg to form the diploid zygote, and a second sperm nucleus fuses with the two nuclei in the central cell of the embryo sac.
The egg is the female gamete in an angiosperm. It is a haploid cell that contains one set of chromosomes. The zygote is the fertilized egg. It is a diploid cell that contains two sets of chromosomes. The zygote will eventually develop into an embryo. The central cell is a cell in the embryo sac that contains two haploid nuclei.
Double fertilization is a unique feature of angiosperms. It is a type of fertilization in which two sperm nuclei fertilize two different cells in the embryo sac. The first sperm nucleus fertilizes the egg to form the zygote. The second sperm nucleus fuses with the two nuclei in the central cell to form a triploid cell. This triploid cell will eventually develop into the endosperm, which is a food reserve for the developing embryo.
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Is scientific law a proven concept? Explain why or why not.
what describes metal for being malleable?
Malleable metals will bend and twist into numerous shapes when affected by a hammer, whereas non-malleable metals might break apart into pieces. Examples of malleable metals are gold, iron, aluminum, copper, silver and lead. ... No metal is completely malleable, and all will break when under extreme stress
Recall what you know about hypertonic, hypotonic, and isotonic solutions. When an environment is hypotonic, what happens
to the cell?
When a cell is submerged in a hypotonic solution, water osmosis causes the cell to become flaccid.
What is osmosis?
A semi-permeable membrane is used in the process of osmosis, which allows solvent molecules to move from a solution of low concentration to a solution of high concentration.
Osmosis is a passive process that doesn't require any energy to complete. In order for the concentrations on either side of the membrane to be equal, molecules must shift from an area of greater concentration to one of lower concentration.
Any solvent, including gases and supercritical liquids, can go through the osmosis process.
When solute concentrations inside and outside of the cell are equal, an isotonic solution has been created.When the concentration of solutes outside the cell is higher than within, the solution is said to be hypertonic. When the concentration of solutes inside the cell is higher than outside, the solution is said to be hypotonic.
Therefore, when a cell is submerged in a hypotonic solution, water osmosis causes the cell to become flaccid.
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into what organelle might the cellular products be placed?
Answer:
Explanation:
Shipping department - Golgi apparatus
Factory interior - Cytoplasm
Vessels- Cellular package containing products such as protein
Warehouse for storage of products -Vacuole
There are different function or different department of every cell organelles and these are mentioned below:
Shipping department - Golgi apparatus
Factory interior - Cytoplasm
Vessels- Cellular package containing products such as protein
Warehouse for storage of products -Vacuole
What are cell organelles?The term cell organelles has been defined as the organ or part of the cell which has been considered as the part of the cell. Cell organelles are mitochondria, ribosomes, vaccuoles, cell wall, endoplasmic reticulum, nucleus and many more.
In the cytoplasm, tRNA, play major role in protein synthesis and tRNA brings amino acids to the ribosome according to the codon in the mRNA which is translating. tRNA contain anti-codon which recognize and bind to the codon as by base pairing where they are linked to protein synthesis as well as tRNA is loaded by aminoacyl-tRNA synthetase enzyme with correct amino acid, which they bring to ribosome for protein synthesis.
Therefore, Shipping department - Golgi apparatus
Factory interior - Cytoplasm
Vessels- Cellular package containing products such as protein
Warehouse for storage of products -Vacuole
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High-energy electrons from NADH and FADH2, are passed into and along the____ The energy from the electrons moving down the chain is used to move H+ ions across the_____ H+ ions build up in the_____ space, making it_____ charged and making the matrix negatively charged. in the inner membrane. H+ ions move through channels of______ The ATP synthase uses the energy from the moving ions to combine ADP and phosphate, forming high-energy______
Answers:
High-energy electrons from NADH and FADH2, are passed into and along the electron transport chain .
The energy from the electrons moving down the chain is used to move H+ ions across the inner membrane .
H+ ions build up in the intermembrane space, making it positively charged and making the matrix negatively charged.
In the inner membrane, H+ ions move through channels of ATP synthase .
The ATP synthase uses the energy from the moving ions to combine ADP and phosphate, forming high-energy ATP .
altering the environment to minimize the stimuli for eating is called
Answer:
Stimulus control
Explanation:
You are controlling the stimuli. Altering the environment to influence, in this case minimize, stimuli is an example of stimulus control.
Which part of the plant cell does photosynthesis occur? Please help
Answer:
Photosynthesis occurs in the chloroplast of the plant cell.
Explanation:
A-Level Environmental Science exam question:
Since the 1950s, the exploitation of the rare-earth elements has increased from a few tonnes per year to over 150 000t per year. They are used in a wide range of applications, including new developments in transport, electronics and healthcare.
Although the main metals used following the industrial revolution are still important, economic development since the mid 1900s has involved the use of relatively small quantities of a much wider range of metals.
Many rare-earth elements have a relatively high mean crustal abundance, but they rarely occur in locally concentrated deposits.
Figure 1.1 shows details of the reserves and production of rare-earth elements in seven countries.
Use the data in figure 1b to calculate the missing values
You are attempting to carry out a transposon mutagenesis experiment using the pRL27 system. The Donor strain you use was giving to you by a lab mate who has been culturing it continuously for several months. When you set up your control plates, you find that the Donor strain grows poorly on Luria DAP Agar. Your transformation efficiency is very poor for this attempt at mutageneis. What likely happened to the Donor strain
The most likely happened to the donor strain is that the transposon is active in the donor resulting in the gradual accumulation of mutations. The accumulation of mutations is promoted by the insertion of the transposon.
A donor strain is a bacterial strain that contains a mobilizable fragment of DNA called plasmid.
These strains (donor strains) exploit the transference properties of a conjugative plasmid to modify a particular recipient strain.
Transposons, also known as jumping genes, are mobile genetic elements that alter the genome of an organism by jumping and thus inserting them into genetic sequences (i.e., into protein-coding sequences).
In this case, the presence of a transposon in the donor strain affected the expression of many genes required for the donor strain in order to grow into Luria DAP Agar.
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Which structure gives you voluntary control over urination?
Answer:
d. External urethral sphincter
Explanation: is correct. post protected
How do the properties of lipids
help explain the structure of a cell membrane?
Explanation:
Lipids give cells membranes a flexible structure which forms a strong barrier between the cell and its surroundings
Answer:
Lipids give cells membranes a flexible structure which forms a strong barrier between the cell and its surroundings. This tells us that the lipid surrounds the structure which then forms the shape of the cell.
Explanation:
Which is the odd
one? Explain.
A. RR
B. Rr
C. Aa
D. aa
Answer:
d aa its not capitalized like the other ones
Explanation:
Question 3 of 10
What is immigration?
O A. When animals die in an ecosystem
O B. When animals are born in an ecosystem
O C. When animals move into an ecosystem
O D. When animals leave an ecosystem
SUBM
Answer:
the answer to your question is is c.
What differences are there in the growth of the human population compared to the animal/plant population?
Answer:
Explanation:
In both plants and animals, there are parts of the body designed to carry the nutrients needed for growth. In a animal it is blood and in a plant, it is the Xylem and Phloem Tissue Humans are born with a set number of limbs and if one get's cut off it cannot regenerate. Because of this, we are increasingly cutting into resources that other species must use in order to survive. We have hindered, or even ended the lives, of numerous species. Today, 99% of the species still remaining on this planet are at risk because of human activity alone.The similarities in the population growth of humans with respect to plants and animals is that, in the three cases, the growth occurs exponentially with respect to the initial number of specimens
The connective tissue layer that surrounds an entire muscle is called ______. Multiple choice question. epimysium endomysium perimysium
Answer:
the answer is epimysium
Explanation:
The connective tissue layer that surrounds an entire muscle is called the epimysium, which is the first option as it is composed of dense, irregular connective tissue and serves to protect the muscle.
What is epimysium?The epimysium plays a role in transmitting force from the muscle to the surrounding structures and connects to the tendons and other connective tissues that attach the muscle to bone and other structures, and the epimysium is just one of the three connective tissue layers that make up the structure of a skeletal muscle; the other two layers are the perimysium and the endomysium, and together, these three layers of connective tissue provide the necessary structural support for skeletal muscles to function properly.
Hence, the connective tissue layer that surrounds an entire muscle is called the epimysium, which is the first option.
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Define The Meaning Of Organelle "_________ __________."
First To Answer Correctly, Gets Brainliest...
Answer:
structures that preform many jobs in cells :)
Answer:
any of a number of organized or specialized structures within a living cell.2): a specialized cellular part (such as a mitochondrion, chloroplast, or nucleus) that has a specific function and is considered analogous to an organ.3)In cell biology, an organelle is a part of a cell that does a specific job. ... Organelles typically have their own plasma membrane round them. Most of the cell's organelles are in the cytoplasm. The name organelle comes from the idea that these structures are to cells what an organ is to the body.
Explanation:
mykaren clark
What are the two stages of photosynthesis represented
Answer:
Light dependent reactions and light independent reactions.
what percentage of extracellular fluid is accounted for by interstitial fluid and plasma?
Answer:
80%
Explanation:
Phloem is used to transport sucrose and amino acids in plants. Sucrose is a carbohydrate. Describe the uses of carbohydrates and amino acids in plants.
Answer:
1. carbohydrates help to produce a part of cellulose. carbohydrate produces the vital source of energy, carbon skeletons for organic compounds, and storage of components.
2. Amino acids help in the ion transportation, modulation of stomatal opening, maintaining the level of detoxification.
how is cell division normally controlled or regulated
Answer:
A variety of genes are involved in the control of cell growth and division. ... Tight regulation of this process ensures that a dividing cell's DNA is copied properly, any errors in the DNA are repaired, and each daughter cell receives a full set of chromosomes.
Explanation:
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What is the term used to describe homologous chromosomes exchanging genetic material during meiosis?.
The term used to describe homologous chromosomes exchanging genetic material during meiosis is called crossing over.
CROSSING OVER:
Crossing over is the process whereby non-sister chromatids of homologous chromosomes (similar but non-identical chromosomes from each parent) exchange genetic material. Crossing over occurs in the prophase I stage of meiosis where homologous chromosomes lie side by side to form a structure called tetrad or bivalent. Crossing over ensures genetic diversity in the offsprings produced meiosis.Learn more about crossing over at: https://brainly.com/question/18824252?referrer=searchResults
Answer:
crossing-over
Explanation:
)
Check out the areas of low pressure on the weather map. Which of these is NOT characteristic of low pressure areas?
A) Storms are likely
B) Weather is cooler and drier.
Weather is wetter and warmer.
D) Air is less dense and the formation of clouds more likely.
Answer: B
Low pressure tends to bring storms with it, form clouds and allow for the weather to be wetter and warmer. High pressure bring cooler and drier weather.
What is the science in which earthquakes are studied called?
A. Plate Tectonics
B. Earthquake Science
C. Wave Science
D. Seismology
Answer:
D. Seismology
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Answer:
D. Seismology
Explanation:
Seismology is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies.
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What inputs of photosynthesis move through the stomata?
Answer:
The gas exchange of carbon dioxide and oxygen occurs through the stomata.
Explanation:
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The movement of gas in the opposite direction
Photolysis is a part of which cycle? a. Phosphorus b. Oxygen c. Nitrogen d. Carbon Please select the best answer from the choices provided A B C D.
Answer:
B Oxygen
Explanation:
it's the answer for your question..
Answer:
It is B
Explanation:
As a part of her homework, June make a flowchart about the steps involved in hearing the sound energy produced by wind chimes.
A flowchart with four steps. The first step is the rods vibrate back and forth. The second step is wind chime rods hit each other. The third step is sound waves are created. The fourth step is the sound travels into your ears.
Which statement best explains the error in June's flowchart?
The wind chime rods hit each other before they begin to vibrate.
Sound waves are created before the wind chime rods hit each other.
The sound of the wind chimes travels to your ear before the rods vibrate.
The spin of the rods causes sound energy, not its vibrations.
Answer:
A is the final answer........