Answers
Fertilization is the process in sexual reproduction where a sperm cell (male gamete) fuses with an egg cell (female gamete) to form a single cell called a zygote. This process occurs in both animals and plants, allowing for the genetic material from both parents to combine and create a new, genetically unique individual. The zygote then undergoes multiple rounds of cell division and differentiation, eventually developing into a fully-formed organism. Fertilization is a crucial step in the life cycle of sexually reproducing species, as it ensures the continuation of their genetic lineage and promotes genetic diversity within a population.
Answer:
The fusion of a haploid male gamete (spermatozoa) and a haploid female gamete (ovum) to form a diploid cell, the zygote, is called fertilization.
Explanation:
Related Questions
Which one of the following animals have air sacs attached to their lungs?
A) birds
B) amphibians
C) reptiles
D) mammals
E) all of the above
Answers
Answer:
1
Explanation:
How do you know something is dead
Answers
Is this without equipment?
Depending on what organism you are talking about, animals that can be seen with the unaided eye you can tell that they are dead by studying their bodily movements such as the rise or falling of their chest.
Plants with the unaided eye, the best indicator is to take a branch or piece off and study the insides color, if it is green then mostly likely they are alive.
Now microscopic organisms are harder to say, it depends on what you are referring to.
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The apple tree receives 1000kJ of light from the Sun, but only uses 500kJ. Of this, only 250kJ are stored in the tree to be transferred through the food chain.
a)Calculate the efficiency of the tree (2)
b)State the ways in which the remaining energy has been transferred out the of the food chain (3)
Answers
a) \(\frac{250}{1000}\) × \(100\) \(= 25\)%
b) Respiration, decomposition
4. The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell would be: which option is correct a) 1 mole of ATP b) 2 moles of ATP c) 3 moles of ATP d) 4 moles of ATP e) 6 moles of ATP
Answers
The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell is approximately 4 moles of ATP.
During oxidative phosphorylation, each mole of NADH can generate around 2.5 to 3 moles of ATP. Therefore, for 2 moles of NADH, the total ATP production would be in the range of 4 to 6 moles of ATP. While the more precise estimate falls within the 4 to 6 moles range, the closest option provided is 4 moles of ATP. It is important to note that the exact ATP yield can vary depending on factors such as the efficiency of the electron transport chain and the specific conditions within the cell.Since there are 2 moles of mitochondrial NADH, the total ATP yield would be around 4 to 6 moles of ATP. However, the most accurate option among the given choices is 4 moles of ATP.
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Type the correct answer in the box. Spell all words correctly.
What is a close relationship between two organisms that live together called?
The close relationship between two organisms that live together is called
Reset
Next
Answers
Answer:
symbiosis.
Explanation:
The term that you are referring to is symbiosis. (a symbiotic relationship)
Symbiosis is a proximate and often long-term interaction between two or more different biological species.
Where is the plasma membrane found?
Answers
The plasma membrane is found in all living cells and serves as a boundary between the cell and its external environment.
The plasma membrane is a thin and fragile membrane that encloses the cytoplasm of cells in prokaryotes and eukaryotes. It is sometimes referred to as the cell membrane, and it is a crucial organelle for maintaining the integrity and functions of cells. In addition, it is responsible for a variety of cellular processes and communications.
The plasma membrane is found on the outermost surface of cells in both eukaryotes and prokaryotes. It separates the cell from the external environment, and it is responsible for regulating the movement of materials in and out of the cell. The plasma membrane in eukaryotic cells forms a boundary between the cytoplasm and the extracellular fluid.
It is composed of a lipid bilayer consisting of phospholipids, glycolipids, and cholesterol, and it also contains proteins, which are embedded in the membrane or attached to its surface. The plasma membrane in prokaryotic cells is similar in structure to that of eukaryotic cells. It is composed of a phospholipid bilayer that is embedded with proteins, but it is much simpler in structure.
Prokaryotic cells have a cell wall that lies outside the plasma membrane, which provides additional protection and support to the cell. Plasmodesmata are channels that are formed through the plasma membranes of adjacent plant cells. They provide a pathway for the transport of materials and communication between cells.
In addition, gap junctions are structures found in animal cells that allow for the passage of small molecules between cells. Tight junctions are another type of intercellular junction that form a barrier between cells, preventing the passage of substances through the extracellular space.
The plasma membrane is a crucial organelle for maintaining the integrity and functions of cells. It is responsible for regulating the movement of materials in and out of the cell, as well as for cellular processes and communication.
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Lactate is an enzyme produced by cels in the small intestine. Lactase helos break down lactose, a sugar in milkaIn humans, lactase is encoded by a single gene Transcription of this gene produces a primary transcript The primary transcriptis processed and then exported out of the nucleus in the cytoplasm, the transcript is translated to synthesize lactase. Thisprocess is summarized in the diagram belownucleuslocatexാകാcytoplam+produce amino contains instructionsWhat are the roles of RNA molecules during the step labeled with an Xin the diagram?OAmRNATRNAERNAcames instructionmakes up part ofcames aminoto build actose the ribosome, which acids to the growingdecodes RNA Lactase moleculeОВ, mRNARNAERNAforms pechde bondsbetween amino acidsromanacids RNA templateto synthesize lactaseОСmRNArRNATRNAproduces amino make up the cames nucleotidesacids to make nbosome, which the mRNALactate19 COPYSynthesizes lactase of the lacaseOD mRNATRNAERNAcontains a copy of folds the amino acid forma peptide bondschain to producethe lactase genebetween aminothe lactase molecule acids in case
Answers
The lactase anzyme is produce by the organism to breal lactose in the intestine. The process of protein synthesis is discribed in the picture and the alternative that have the most close description of each RNA that work in the synthesis of this enzyme is:
mRNA - carries instructions to build lactase
The conformational change in an enzyme after the substrate is bound that allows the chemical reaction to proceed, can be explained by
A.induced fit
B. transition
C. fit and fine
D. Pasteur
Answers
The cell body of a neuron
Answers
nutrition subject
10 red flags for misleading claims :claim discuss, claim analysis and their source
Answers
The red flags or warning signs to look out for when evaluating nutrition claims are:
"Miraculous" or "magic" claims"One-size-fits-all" approach"Cure-all" claims"Quick and easy" weight loss promisesMisinterpretation of scientific studies"Secret" or hidden informationTestimonials as evidenceClaims based on a single studyConspiracy theories or distrust of set up authoritiesLack of credible sources or referencesWhat are the nutrition redflagsNutrition claims can be misleading or inaccurate. Be alert to red flags for misleading claims "Miraculous" or "magic" claims: A product or diet is described as a miracle cure or a magic solution for various health issues.
"One-size-fits-all" approach: Claim that a diet or product is suitable for everyone despite individual differences. Nutrition needs vary. Be wary of universal solutions claims.
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A neuron is A. a group of cells specialized for a particular type of information storage. B. one of the fibers connecting the eye to the visual cortex. C. an individual cell within the nervous system. D. a region within the brain dedicated to a single function.
Answers
Answer:
It is C bro
Explanation:
Good luck
Meteorology is the study of
Oradar.
O meteors.
O Earth's satellites.
O Earth's atmosphere.
Answers
Answer:
Earth's Atmosphere
Explanation:
Meteorology has to do with the science behind the weather and climate on Earth.
Weather and Climate are located/produced in Earth's atmosphere, and thus Meteorology and Meteorologists study the atmosphere to give us weather updates and climate changes.
Answer:
The answer is D!
Explanation:
Earths Atmosphere.
I did the cumulative exam!
Which of the following mutations is LEAST likely to result in harmful changes to cells?
Answers
I hope that was the one that you were looking for. Please vote this as brainliest if you don’t mind :)
In a population of deer, the birth rate is 5, the death rate is 4, immigration is 8, and emigration is 6. Calculate the population growth by filling in the formula of population growth.r = (b+i)-(d+e)Population growth (r)Birth rate (b)Death rate (d)Immigration rate (i)Emigration rate (e)
Answers
We have the following data:
Birth rate (b) = 5
Death rate (d) = 4
Imigration rate (i) = 8
Emigration rate (e) = 6
The formula for population growth (r) is:
r = (b+i) - (d+e)
So we have the following:
r = (5+8) - (4+6)
r = 13 - 10
r = 3
The population growth is then measured in 3.
Take a walk outside and make observations. Describe one of each type of interaction between spheres that you observe. An example of the biosphere interacting with the geosphere is an animal burrow.
Answers
Answer:
1. interaction between hydrosphere and atmosphere.
Cloud is formed from water vapors evaporated by lake water (hydrosphere) in atmosphere
2. interaction between atmosphere and geosphere.
The atmosphere arranges the geosphere with the energy required for the breaking of rocks and different types of erosion.
3. interaction between hydrosphere and geosphere.
For electricity purposes, water in the lake (hydrosphere) flows and stored into the cliff walls behind the dam, forming groundwater after moving through the turbine (geosphere).
4. interaction between the atmosphere and the biosphere.
In the nitrogen cycle, atmospheric nitrogen is fixed to compounds of nitrogen in plants with help of nitrogen fixing microbes (biosphere).
Which of the following is a negative consequence associated monoculture?
A) Decreased yield
B) Increased crop species
C) Ecosystem stability
D) Reduced biodiversity
Answers
Answer:
Reduced biodiversity
Explanation:
took the test
Two of the most important functions of the organ systems are?
1. to provide the cells with oxygen and remove waste
2. provide the cells with nutrients and remove waste
3.provide cells with oxygen and bring in waste
4.to provide cells with oxygen and nutrients and remove waste
Answers
Answer:
4.to provide cells with oxygen and nutrients and remove waste
Explanation:
Its 4 because it provides those cells in your body with oxygen so you can breathe.
A bacterium called Salmonella can cause
food poisoning.which kingdom is it in?
Answers
Answer:
monera kingdom
Explanation:
Answer:
The kingdom is Monera Kingdom
Explanation:
The brain and spinal cord are part of the _______ nervous system. The electrical charges that act as nervous signals are called _______. Jellyfish do not have a brain. Instead their nervous system is called a _______. After nervous systems began to develop in bilaterally symmetric animals, some developed ventral, or front, nerve cords, while chordates developed _______ nerve cords. Skeletons that allow for movement by using muscles and squeezing liquid to change the body shape are called _______ skeletons. _______ do not grow with arthropods, and so occasionally must be shed and regrown from chitin. Muscles move endo- and exoskeletons by _______. _______ is the joining of two gametes called sperm and egg. A fish that lays her eggs in a cluster is initiating _______ fertilization. _______ are an adaptation by reptiles to allow for reproduction and embryo development on land. Describe three different strategies used by three different animals to thermoregulate. If you see a snake coiled up in a sunny patch of grass, what can you probably conclude about the type of thermoregulator it is. Why?
Answers
The brain and spinal cord are part of the central nervous system.
The electrical charges that act as nervous signals are called action potentials or nerve impulses.
Jellyfish do not have a brain. Instead, their nervous system is called a nerve net.
After nervous systems began to develop in bilaterally symmetric animals, some developed ventral nerve cords, while chordates developed dorsal nerve cords.
Skeletons that allow for movement by using muscles and squeezing liquid to change the body shape are called hydrostatic skeletons.
Exoskeletons do not grow with arthropods, and so occasionally must be shed and regrown from chitin.
Muscles move endo- and exoskeletons by contracting and relaxing.
Fertilization is the joining of two gametes called sperm and egg.
A fish that lays her eggs in a cluster is initiating cluster or mass fertilization.
Amniotic eggs are an adaptation by reptiles to allow for reproduction and embryo development on land.
Describe three different strategies used by three different animals to thermoregulate.
Elephants: Elephants thermoregulate by using their large ears as cooling devices. They flap their ears to increase surface area and enhance heat loss through evaporative cooling.Desert Lizards: Desert lizards employ behavioral thermoregulation by basking in the sun to absorb heat and warming their bodies. They also retreat to shade or burrows to avoid excessive heat when needed.Penguins: Penguins have a unique thermoregulation strategy. They huddle together in large groups to conserve body heat and shield themselves from the cold Antarctic winds, effectively reducing heat loss and maintaining body temperature.If you see a snake coiled up in a sunny patch of grass, what can you probably conclude about the type of thermoregulator it is. Why?
If you see a snake coiled up in a sunny patch of grass, you can probably conclude that the snake is an ectotherm. Ectotherms rely on external heat sources, such as the sun, to regulate their body temperature. By basking in the sun, the snake absorbs heat, which helps raise its body temperature to a suitable level for proper physiological functioning.
Answer:
1. central
2. action potential
3. nerve net
4. dorsal
5. hydrostatic
6. Exoskeletons
7. contraction/contracting
8. Fertilization
9. external fertilization
10. Eggs
11. Animals with fur thermoregulate by panting. Winged birds will flap against their mouths/heads to dissipate heat. Humans will produce sweat to evaporatively cool. Polar bears have developed blubber. Bears drop body temperatures during hibernation.
12. Seeing a snake using the warmth of the sun leads us to conclude that it is likely a thermo conformer that cannot produce its own body heat.
Salivary amylase is an enzyme that breaks down starch. The optimum or
best pH for this reaction is 6.7. Which of the following would not have an
effect on a reaction involving this enzyme?
1. maintaining the pH of the reaction at 6.7
2. substrate concentration
3. enzyme concentration
4. decreasing the temperature of the reaction by 5 degrees C
O Enzyme concentration
O Maintaining the pH of the reaction at 6.7.
O Decreased temperature of reaction temperature by 10 degrees C.
O Amount of substrate
Answers
Answer:
Increasing substrate concentration
Explanation:
i just took a test for this
Substrate concentration would not have an effect on a reaction involving this enzyme. So, the correct option is 2.
What is Salivary amylase?It is an enzyme that catalyzes the starch into the small unit glucose during the mastication (chewing) process. This enzyme is secreted by the salivary gland.
The proper working of this enzyme is seen at pH 6.7. This enzyme is not temperature sensitive. As the pH increases, the \(H^+\) ions decreases affecting the activity of this enzyme specifically.
Therefore, Substrate concentration would not have an effect on a reaction involving this enzyme.
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Which term is used to describe the different depth areas of the oceans?
Opedantic zones
O podiatric zones
pelagic zones
Oprehistoric zones
Answers
Answer:
pelagic zones
Explanation:
1. What is the primary function of the small intestines? (1 point)
A.uses mechanical digestion to break down food particles
B uses chemical digestion and absorbs nutrients the body needs
C carries food and nutrients throughout the body
D eliminates the waste the body does not need
A
Answers
Utilizes chemical digestion to assimilate nutrients for the body.
What are the small intestine's three purposes?The small intestine's main jobs are to digest food, absorb nutrients needed by the body, and eliminate unwanted substances. Additionally, it contributes to the immune system by serving as a barrier to the diverse flora that lives in the gut and preventing the entry of dangerous germs.
Does food undergo chemical breakdown in the small intestine?Most chemical digestion and nearly all absorption occur in the small intestine. Large food molecules are broken down chemically during chemical digestion into their component parts, which can subsequently be absorbed past the intestinal wall and into the bloodstream.
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Answer:
Explanation:
Answer is B uses chemical digestion and absorbs nutrients the body needs
What would happen to a plant if the chloroplasts in its cells became damaged?
Answers
Answer:
The plant would die.
Explanation:
The plant's chloroplasts are the organelles that do photosynthesis. They provide sugar (food/energy) for the plant. Without this food, the plant can't carry out other functions like growing and reproducing. Just like any other organism, the plant will die once it runs out of energy.
A student squeezes a clothespin as rapidly as possible for one minute. Without stopping to rest, the student continues to squeeze the clothespin for a second minute. At the end of the second minute, the student’s fingers and hand feel very cramped and tired. The physical tiredness and cramping in the muscles in the student’s hand were most likely due to the increased production of
oxygen
ATP
Waste products
glucose
Answers
Answer: Waste products
Explanation:
I need help with this:(
Answers
Answer:
Water temperature is a key factor affecting phytoplankton bloom dynamics in shallow productive coastal waters and could become crucial with future global warming by modifying bloom phenology and changing phytoplankton community structure, in turn affecting the entire food web and ecosystem services.
What are two kinds of chemical properties of matter?
Ability to shine
Ability to burn
Ability to bend
Ability to rust
Answers
Explanation:
Summary. Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust.
Answer: Ability to burn and ability to rust
Explanation:
9. If Seneca decides to walk across town to a store that is .95 kilometers away and
she has only 25 minutes to get there, what speed does she need to maintain in
order to reach the store on time?
Answers
Answer:
95k / 25mn = 3.8m/s
Explanation:
I did this this morning...but i'm not sure whether it's right or wrong.
There has been news of an outbreak of FMD in the state. Sanjay is preparing a warning statement to be issued to all farm
that they will be on the lookout for signs and immediately contact his department if any of their animals show signs of it. W
ready, who will he MOST likely send it out to?
O A. only cattle farmers
OB.
O C.
OD.
cattle farmers and sheep herders
farms with cattle, sheep, or pigs
only sheep herders
Answers
If Sanjay is preparing a warning statement to be issued to all farm. It will MOST likely send it out to: C. Farms with cattle, sheep, or pigs.
What is Foot-and-mouth disease (FMD)?Foot-and-mouth disease (FMD) is known as a disease that affects animals such as cattle, sheep, and pigs.
Therefore, Sanjay will likely send the warning statement out to farms with any of these animals. This will help ensure that all farmers who have animals that are susceptible to FMD are aware of the outbreak and can be on the lookout for signs of the disease.
Sending the warning statement only to cattle farmers or sheep herders would not be comprehensive enough and could lead to the disease spreading among other susceptible animals on the farm.
Therefore the correct option is C.
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HELP ME NOW PLEASE
IM BEING TIMED
Isotopes of the same element will have a different number of neutrons, but the same number of protons.
Please select the best answer from the choices provided
T
F
Answers
Answer:
true
Explanation:
Atoms of the same element that contain the same number of protons, but different numbers of neutrons, are isotopes.
Answer:
TRUE!!!!!
Explanation:
Poggers
The mechanism by which evolution occurs is
Multiple choice question.
homeostasis.
growth and development.
natural selection.
organization.
Answers
Answer:
Natural selection (c)
Explanation:
if you have time, can you please answer the following questions:
1. What is the ultimate cause of all evolution?
A. Sudden disasters caused by external forces
B. Infectious disease
C. Environmental change
D. Time
2. The first major anatomical difference that distinguishes our ancestors from those of the Chimpanzee and Gorilla is
A. Bipedalism
B. Bipartite behavior
C. Brachiation
D. Bulimia
3. An elderly human ancestor provides extra food for her grandchildren. This is an example of:
A. Environmental forcing
B. Natural selection
C. Kin selection
D. Selective breeding
4. Anthropology was developed as an American discipline primarily through the study of
A. Early hominins
B. Primates
C. Arrowheads
D. Native Americans
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