The other Crab belongs to Genus-Cancer and Species-Magister.
The Dungeness crab, also known as Cancer magister or Metacarcinus magister, lives in bays, estuaries, and along Alaska's nearshore coast. Named after a narrow, sandy inlet within Dungeness Spit on the southern border of the Straits of Juan de Fuca, the species is named for one of its characteristic habitats. When female living Dungeness crabs are ready to molt, they lose their exoskeleton to enable them to grow and produce a larger shell; this is the ideal time for mating before the new, hard shell has developed.
The family Cancridae includes the genus Cancer of saltwater crabs. Eight of the species are still living, while three have already gone extinct. Among them are well-known littoral zone crabs like the red rock crab, the Jonah crab, and the European edible crab.
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Explain how Mendel’s data supported his hypothesis. Support your answer by citing textual and evidence from this lesson.
Mendel's hypothesis suggested that every one plant might have received two 'factors' for each trait, one from each parent plant during cross-pollination between purple-flowered and white-flowered plants.
Mendel's data supported this hypothesis as all first-generation (F₁) plants had purple flowers but 1/4th second-generation (F₂) plants possessed white flowers. Mendel termed this characteristic the recessive trait as compared to the rest 3/4th second-generation plants with purple flowers, which contained the dominant trait.
Based on these results, Mendel hypothesized that certain traits like white flower color are expressed only when the plant received both the factors that were responsible for white flower color.
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The French biologist Cuenot crossed wild, grey-colored mice with white (albino) mice. In the first generation, all were grey. From the many litters of the second generation, 223 were grey and 72 were white. Which of Mendel's laws is demonstrated by the data?
Law of dominance is the Mendel's law which is demonstrated by the data.
Gregor Mendel, through his work on pea plants, discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent.
Mendel tracked the segregation of parental genes and their appearance in the offspring as dominant or recessive traits.
The law of dominance is used to explain the expression of only one of the parental characters in a monohybrid cross in the first filial and the expression of both in the second filial.
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Identify the types of worms in the drawing. Explain the reason for your identification.
In the image, we can see a round segmented worm (A) and a flat unsegmented worm (B).
Worm A seems to belong to the phylum Annelid, which members are characterized by having its body divided into multiple segments, while worm B seems to be part of the Platyhelminthes phylum, with flat and unsegmented bodies given that they don't have a circulatory system.
Complete each statement to identify the form of asexual reproduction.
During
, a new plant grows from parts of the parent plant.
During
, a cell divides to produce a new, genetically identical cell.
Answer:
Second option is the correct
Explanation:
During
, a cell divides to produce a new, genetically identical cell.
excess salt in humans in excreted in both______and______
Excess salt in humans in excreted in both Urine and sweat .
When you get more sodium than you need, the kidneys flush out the excess by making more, or saltier, urine. If they can't get rid of enough sodium, though, it accumulates in the fluid between cells. Drinking too much water isn't the only thing that can make you have to pee nonstop.
A diet high in sodium can sensitize cells in the brain that are part of the sympathetic nervous system, which controls the body's so called fight or flight response. Salt makes your body hold onto water. If you eat too much, the extra water in your blood means there is extra pressure on your blood vessel walls, raising your blood pressure.
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As stimulus strength is increased, the force of a twitch response increases. What does this represent?.
The correct answer is the increased requirement of motor units.
The force of muscle contraction increases with the strength of the stimulus. This is because the contraction of individual muscle fibers increases as the intensity of the stimulus increases. The greater the stimulus, the greater the force the muscle will not contract. Muscles respond to stronger stimuli with the same force. In skeletal muscle, motor neurons can innervate many muscle fibers.
At high stimulation voltages, the muscle response reaches its maximum amplitude. Since the muscle is already working at its best, the muscle response does not continue to increase with increasing stimulation voltage. The stronger the stimulation, the more nerve fibers are stimulated and the more motor neurons are activated. Recruiting additional fibers can increase contractile force.
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50 POINTS!!! ASAP
Which best describes a cell process common to both prokaryotic and eukaryotic
cells?
Both cell types carry out transcription in the nucleus.
Both cell types use ribosomes to translate mRNA into proteins.
Both cell types package proteins in the golgi apparatus.
Both cell types carry out translation in the endoplasmic reticulum.
Answer:
NO 3 :Both cell types use ribosomes to translate mRNA into proteins.
Answer: option 3
Explanation:
Which of the following names an effect of increasing the livestock population through higher fertility rates?
improved animal-husbandry practices
improved animal-husbandry practices
increased cost for food products
increased cost for food products
improved behavior in animals
improved behavior in animals
increased methane emissions from cattle
Improved animal husbandry practices is an effect of increasing the livestock population through higher fertility rates.
Animal husbandry is the field of agriculture that deals with the raising of animals for their meat, eggs, milk, wool, etc. The animals raised in animal husbandry are cows, hen, goat, sheep and many others. Animal husbandry not only deals with the raising of the animals but it also involves in their selective breeding so as to bring out the best quality yield out of them.
Livestock refers to the domesticated animals that are raised in households or animal husbandry. Livestock can also be referred to as farm animals. However, poultry is not included in livestock. Poultry refers to the birds like hens, chickens, etc.
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Unit 5 lesson 1 and 2
Which of the following molecule is not involved in photosynthesis ie what was not mentioned
A glucose
B nadph
C fadh
D atp
FADH molecule is not involved in photosynthesis.
Photosynthesis is the process of synthesis of food by plants using carbon dioxide and water in presence of sunlight and chlorophyll. Oxygen (O2) is released during the process as a waste product. The energy from ATP and NADPH are used to fix carbon dioxide (CO2). So NADH is not a product of the light reaction of photosynthesis.
The main difference between NADH and FADH2 is that every NADH molecule produces 3 ATP molecules during oxidative phosphorylation whereas every FADH2 molecule produces 2 ATP molecules.
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Where does Glycolysis occur?
A. In the cytoplasm
B. In the mitochondria
C. In the chloroplast
D. In Mrs. Wright's shoe
Answer:
Glycolysis occurs in cytoplasm
Explanation:
The enzymes required for the glycolytic pathway are only found in the cytoplasm. A transport protein is required to move glucose across membranes.
Write a newspaper column explaining the process of meiosis to an ordinary reader
with little knowledge of biology. (need help TT)
The term 'meiosis' is generally used in biology to describe a special type of cell division. This process is responsible for the formation of sex cells or gametes, i.e. sperms and eggs, during sexual reproduction.
During meiosis, a single cell undergoes the process of cell division twice to give rise to four cells. These newly formed cells possess only half of the genetic information as compared to the original parent cell. This genetic information is more specifically related to the number of chromosomes in the cell.
Since the number of chromosomes is halved in the four gamete cells that are produced by meiosis, they are called haploid.
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As time goes on, what happens to the potential difference across the membrane of this single segment?.
As time goes on, what happens to the potential difference across the membrane of this single segment exponentially decays to its minimum value. The membrane is comprised of a very specific manner of chemicals and organelles which focuses on the improvement of the whole process, or mechanism of the transportation of the materials across the membrane. The potential difference across the membrane of this single segment will exponentially decay to its minimum value.
in e. coli, the lac operon is off by default. why do you think this is the case?
In E. coli, the lac operon is under both negative and positive transcriptional control by the repressor protein and the catabolite activator protein (CAP).
The lac operon encodes proteins that transport and degrade lactose within the cell. In the absence of glucose, CAP allows bacteria to use alternative carbon sources such as lactose. In the absence of lactose, the lac repressor ensures that the lac operon is turned off.
Glucose and lactose levels regulate the initiation of lac operon transcription via their effects on the lac repressor protein and CAP.
Lactose increases the concentration of allolactose, which binds to and removes the repressor protein from the DNA.
The addition of glucose reduces the concentration of cyclic AMP. Because cyclic AMP does not bind to CAP, this gene activator protein dissociates from the DNA, effectively shutting down the operon.
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Negative supercoiling in bacteria is typically introduced by _______ enzyme and are commonly inhibited by antibiotics called quinolones.
Answer: DNA gyrase
Explanation:
how are internal and external respiration alike? group of answer choices both involve carbon dioxide diffusing into the body's tissues. both involve carbon dioxide diffusing into the lungs. both involve oxygen diffusing into the lungs. both involve oxygen diffusing into the body's tissues. both involve an exchange of gases.
Both internal respiration and external respiration involves an exchange of gases.
Internal Respiration- It typically refers to the gas exchange that takes place between both the blood and cells, primarily between oxygen and carbon dioxide. In alveolar tissues during internal breathing, oxygen attaches to the hemoglobin and is delivered to other body tissues.
External Respiration- In the process of external respiration, oxygen diffuses into to the bloodstream and carbon dioxide into the alveolar air in the lungs. In the involved in the metabolism tissues, internal respiration takes place as oxygen diffuses from the blood and the carbon dioxide diffuses from the cells.
The given question format is incorrect, find below the correction question format,
Q. How are internal and external respiration alike?
A. Both involve an exchange of gases.
B. Both involve carbon dioxide diffusing into the lungs.
C. Both involve oxygen diffusing into the lungs.
D. Both involve carbon dioxide diffusing into the body's tissues.
E. Both involve oxygen diffusing into the body's tissues.
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JIZ
Which of the following is an example of an anthropogenic
effect on the nitrogen cycle?
A Lightning converts atmospheric nitrogen into usable
nitrogen.
B Bacteria in nodules on the roots of legumes convert am-
monia into nitrates.
C Rain washes excess fertilizer from a farm into a nearby
stream.
D The nitrogen in decomposing organisms converts back to
ammonia.
The example of anthropogenic effect on nitrogen cycle is: (C) Rain washes excess fertilizer from a farm into a nearby stream.
Anthropogenic effect is the one that is influenced due to human activities. In the given question, all other activities occur due to influence of nature but the presence of excess fertilizers is a human activity that can affect the naturally occurring nitrogen cycle.
Nitrogen cycle is the biogeochemical cycle that converts the atmospheric nitrogen into forms that can be utilized by the plants. This nitrogen is then again passed on from all the organisms inti the environment and hence the cycle gets completed.
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The primary function of the muscular system is:
delivering nutrients
O movement
protection
O immune r ponse
Help ASAP
The primary function of the muscular system is movement.
What is muscles?
The muscular system is a group of organs that includes skeletal, smooth, and cardiac muscle. It allows the body to move, maintains posture, and circulates blood throughout the body. Although some muscles (such as the heart muscle) are entirely autonomous, the nervous system controls the muscular systems in vertebrates. It forms the musculoskeletal system in humans, along with the skeletal system, and is responsible for body movement.
Muscles control movement and are linked to bones, internal organs, and blood arteries. Muscle contraction causes nearly all movement in the body.
So, B is the right answer.
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Which of the following statements about the conditions shown in the u-shaped tube are true?
a. There is less free water in the right arm of the tube than in the left arm of the tube.
b. Water is tightly clustered around the hydrophilic solute molecules on both sides of the membrane.
The following statements about the conditions shown in the u-shaped tube are true:
a. There is less free water in the right arm of the tube than in the left arm of the tube.
b. Water is tightly clustered around the hydrophilic solute molecules on both sides of the membrane.
In the u-shaped tube image, the first statement which is true about the u-shaped tube indicates that the left arm has more solute than the right arm. Although, the diagram mentioned indicates equal volumes on both the sides. So, concentration will depend on the amount of solute that dissolves in the solvent.
Here's the complete question with picture of u-shaped tube attached:
Which of the following statements about the conditions shown in the u-shaped tube are true?
a. There is less free water in the right arm of the tube than in the left arm of the tube.
b. Water is tightly clustered around the hydrophilic solute molecules on both sides of the membrane.
c. Solutes can pass through the selectively permeable membrane from right to left, but free water cannot.
d. There is more solute in the left arm of the tube than in the right arm of the tube.
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becoming upright was one of the first milestones in becoming human. by freeing up our hands, a whole world of tool use, dexterity, and walking became available to us. it may have also allowed our ancestors' brains to grow. what does the fossil record tell
The fossil record tells us about the evolution of the human species and the importance of Bipedalism.
Between five million and seven million years ago, certain apelike creatures in Africa probably started to walk regularly on two legs, which is when the earliest known human forebears first appeared. By 2.5 million years ago, they were flinting simple stone tools. After two million years, some of them moved from Africa to Asia and Europe.
How can fossils depict the evolution of humans?
The human family tree includes many more branches and deeper roots than we were previously aware of, even a few decades ago, thanks to fossil discoveries. In fact, since the renowned "Lucy" fossil skeleton was found in 1974, the number of branches on our evolutionary tree as well as the amount of time have roughly doubled.
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What is one way that eukaryotic cells differ from prokaryotic cells?
A.
Only eukaryotic cells reproduce through mitosis.
B.
Only eukaryotic cells store their genetic material in chromosomes.
C.
Only eukaryotic cells store their genetic material in ribosomes.
D.
Only eukaryotic cells reproduce through binary fission.
One way that eukaryotic cells differ from prokaryotic cells is that only eukaryotic cells reproduce by mitosis.
What is the difference between a eukaryotic and a prokaryotic cell?The main difference between these two types is in the cell structure. The prokaryotic cell is characterized by the absence of a nucleus and simple structure. The eukaryotic cell has a defined nucleus and a more complex structure. It is believed that the first prokaryotic cell appeared over 3.5 billion years ago. In prokaryotic cells, reproduction takes place through asexual binary fission. In eukaryotic cells, it happens through mitosis and meiosis.
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Which organisms are classified as gymnosperms? Select all that apply. giant sequoia bristlecone pine bald cypress cherry tree
The organisms that are classified as gymnosperms are as follows:
Bristlecone Pinegiant sequoia bald cypress What is a gymnosperm?Gymnosperms are plants such as a conifer whose seeds are not enclosed in an ovary.
Gymnosperms are the second group of plants after angiosperms or flowering plants. They are characterized by their inability to produce flowers or fruits, hence, bear their seeds in cones.
The largest group of living gymnosperms are as follows:
Conifers made up of pines, cypresses, and relatives
Cycads
Gnetophytes e.g. Gnetum, Ephedra and Welwitschia Ginkgo biloba (a single living species)
Therefore, bristlecone Pine, giant sequoia and bald cypress are the gymnosperms in the list given in the options.
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You want to cultivate some exotic plants at your farm however the climate is chillier than the temperature range favorable to the crop which is the best method to use for the cultivation of this exotic crop
To cultivate some exotic plants when the climate is chillier than the temperature range favorable to the crop, the best method to use for the cultivation of this exotic crop is adopting "greenhouse".
What is a greenhouse?
Greenhouse, as the name suggests, is a simple building with a transparent or opaque roof design built for the production and protection of crops against the influence of unsuitable environmental conditions.
Using greenhouse to grow the exotic crop would bridge the gap created by difference in environmental conditions.
In summary, greenhouse cultivation makes it possible to grow the exotic crop in a chiller environment that wouldn't otherwise be able to grow. It creates a suitable ecosystem for the crop regulating climatic factors that would have affected it
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atom cannot be broken down by chemical reaction
No new atom is created, and no atoms are destroyed. In a compound response, reactants reach one another, bonds between atoms in the reactants are broken, and particles modify and frame new bonds to make the items.
They can't be separated into more straightforward kinds of issue by either physical or substance implies. They can exist as particles (for e.g., neon) or atoms (for e.g., nitrogen).
What is an element?
An element is a substance that comprises molecules that have a similar number of protons, or at least, a similar nuclear number. They are synthetically the least complex substances and thus can't be separated utilizing compound strategies.
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HELP ASAPP!!! NEED TO KNOW
Briefly explain the difference between the cranium and the skull
Answer: The main difference between the cranium and skull is that the skull is composed of both facial bones whereas the cranium is the upper part of the skull, composed of bones that do not move.
Your skull provides structure to your head and face while also protecting your brain. The bones in your skull can be divided into the cranial bones, which form your cranium, and facial bones, which make up your face. There are several types of bones within your body, including: long bones.
The cranium, is the part of the skull that encloses the brain—is sometimes called the braincase, but its intimate relation to the sense organs for sight, sound, smell, and taste and to other structures makes such a designation somewhat misleading.
The rotation of the earth impacts what movement? Select all that applies
1. wind
2. mass
3. ocean currents
4. gravity
C4H12+7O2 = 6H2O+4CO2 What is the name for this chemical reaction? I need the acual name for what this is called together.. Thank you.
The given chemical reaction: C4H12+7O2 = 6H2O+4CO2 is a type of Combustion reaction.
A combustion reaction takes place when oxygen (O2) reacts with a chemical substance and energy is released in the form of heat as well as light. Combustion reactions always require oxygen.
The chemical reaction: C4H12+7O2 = 6H2O+4CO2 represents a combustion reaction of a hydrocarbon, which is C4H12 in this case. The combustion of hydrocarbons in the presence of oxygen leads to the formation of carbon dioxide (CO2) and water (H2O) as products.
For example, the balanced chemical equation for the combustion of CH4 or methane (an alkane), is given below:-
CH4 + 2O2 → CO2 + 2H2O
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if needed, protein can help to maintain a steady blood glucose level
a. True
b. False
The given statement is true as if needed, protein can help to maintain a steady blood glucose level and so meet the glucose needs of the brain.
With enough insulin, protein has no impact on blood glucose levels. However, when there is a lack of insulin, gluconeogenesis progresses quickly and raises blood sugar levels.
Proteins and glucose interact nonenzymatically in physiological settings. In diabetic patients with high blood sugar levels, this glycation is amplified and results in a number of problems. The most prevalent protein in plasma is human albumin serum (HSA), which is glycated by glucose.
Gluconeogenic substrates, such as proteins, can be utilised during fasting or low-carbohydrate diets to create glucose. In general, high-protein (HP) diets contain little carbs and are thought to encourage postprandial gluconeogenesis.
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which two teeth have their mesial proximal contact more cervical than their distal proximal contact?
Mandibular first premolar and Primary maxillary canine are two teeth have their mesial proximal contact more cervical than their distal proximal contact
It refers to the area between adjacent tooth surfaces, specifically the area between the canine and the lateral incisor. A tooth's "proximal surface" is the area that it faces while interacting with an adjacent tooth. The tooth's contact area is the region where it makes contact with the tooth next to it. The term "mesial" describes the tooth's front-facing surface. In total, each tooth has five surfaces: Bicuspid and molar teeth have an occlusal surface that is used for chewing or grinding. the front of the mouth's mesial surface. Distal refers to behind and near the mouth's back. The back of a tooth is its distal side. A tooth's buccal surface is its cheek-side.
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Whihc traits can be used to differentiate humans from our closest living primate relatives?
The characteristics that can be used to distinguish humans from our nearest surviving monkey cousins include large brain size, the capacity to walk solely on two legs, and extensive tool use.
A person is a culture-bearing primate that belongs to the genus Homo, particularly the species H. sapiens. Humans are anatomically similar to and related to great apes, but they are set apart by a more highly developed brain and the ensuing ability for fluent speech and abstract thought. Humans also carry their bodies with a noticeable erectness, which frees the hands for use as manipulating members. Nevertheless, not all of these traits are specific to people.
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