The refractory period is the time in which the cell membrane remains depolarized, that is, it does not react to a second stimulus. It takes place after an excitation of the cell.
(01.03 LC)In order to measure the mass of water, it needs to bein a containerin spaceITon a surfacewarmed up
Answer:
-In a container
Explanation:
The mass of a liquid can be measured by knowing the density and volume. The volume can be known if I put the liquid in a container whose volume is known or in a graduated container.
Which of the following describes the significance of sequence of an individuals DNA?
B: The sequence of the DNA determines and individual's traits
A cannot be the answer because while there is a part of a DNA sequence that determines the sex of an individual, there is far more to it. C is not the answer because there isn't necessarily a code for mutations, it's something that happens. D is not the answer because someone's genes are set.
Question Two:
C: Meiosis
Fertilization is the process that occurs when a sperm cell meets an egg cell. Mitosis is how regular cells reproduce. Replication is when DNA reproduces. Therefore, the answer is Meiosis.
In spermatogenesis, __i___ ___ii______ cells are madeSelect one:a.i-4, ii-uniqueb.i-1, ii-uniquec.i-1, ii-identicald. i-4, ii-identical
Spermatogenesis
In spermatogenesis, since the cell division process of the germ line called meiosis is involved, 4 cells are generated, all genetically different from each other.
Therefore, the correct answer to this question is option a.
What type of relationship
exists in microbiomes
between bacteria and
humans?
A. Predator/Prey
B. Competition
C. Mutualism this
D. Parasitism
Answer:
c) Mutualism
Explanation:
Mutualism is the type of relationship which exists in microbiomes between bacteria and humans. Hence, option (c) is correct.
Mutualism is a type of relationship exists in microbiomes between bacteria and humans.
Option C is correct.
What is the connection between bacteria and people?The human intestine and many of its symbionts have a mutually beneficial relationship in which the intestine supplies nutrients to the resident bacteria while the bacteria help with food digestion and nutrient absorption, produce vitamins like biotin and vitamin K, and control immune system activity.
What kind of connection exists between microbes and humans?Individual variations in the microbiome influence host health, may be implicated in disease genesis, and affect drug metabolism, toxicity, and efficacy. Humans have established intimate symbiotic connections with a consortium of gut bacteria (microbiome).
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Which is an example of an organ systemA.the compartments that make up the liver and control its function.B.the brain, spinal cord, and nerves working together for one purpose.C.the lining of the intestine.D.lungs taking in oxygen.
An organ system is a group of organs that work together to do a certain function in the organisms body. This can be seen in the alternative B, that represents the nervous system (the brain, spiral cord, and nerves working together for one purpose).
need help with this problem 1. why do you think fossils are important to the study of evolution?2. Do you think the word transitional is a scientifically appropiate description for fossils?3. Knowing how fossils form, do you think it's likely that humans will ever piece together a complete fossil record for every species that ever existed on earth? why or why not?
1) Fossils are the preserved remains of traces of organisms from the past so they are very important evidence for evolution. They show extinct organisms that were very different from any now living, it also shows successions of organisms through time. Fossils tell us when organisms lived, they provide evidence for the progression and evolution of life on the earth over millions of years.
Alligators are large predators located throughout the southeast. They have large tails that act as rudders and webbed feet. These adaptations make alligators well suited for life in aA)swamp.B)forest.C)estuary.D)salt marsh.
Answer: A
Explanation:
Powerful tail used for swimming. Eyes and nostrils on the top of their head so they can remain submerged while breathing and keeping an eye out. A “third eyelid” called the nictitating membrane sweeps sideways across the eye to protect the eye during feeding and diving
Which of the following is an Autotroph?A. TigerB. Primary consumerC. OaktreeD. Decomposer
Answer
C. Oaktree
Explanation
Animals like the tiger must make their own food and these are termed heterotrophs.
Why cant plants and animals cant use nitrogen as it is in the atmosphere?
The most abundant naturally occurring gas in the atmosphere is the Nitrogen (N2); however, plants and animals are unable to use this directly because of their inability to break down its triple bond. In order for them to utilize this gas, it must be transformed into another form or molecules. There are ways where to convert nitrogen to make it useful for the plants and animals.
The first one is lightning. At the time when lightning strikes, nitrogen gas is transformed into nitrates by which plants can use.
The second one is through the process of nitrogen fixation. In this process, special nitrogen-fixing bacteria helps in converting this gas into useful forms.
Lastly, when there is a decaying organism. Nitrogen is released in the form of ammonium.
Base your answers to the questions on the data
table below and on your knowledge of biology.
The table below indicates the amount of oxygen
present at various water temperatures in a pond.
Which process performed by organisms produces
oxygen for the aquatic ecosystem?
A. respiration
B. replication
C. active transport
D. autotrophic nutrition
Based on the table, the process performed by organisms that produce oxygen for the aquatic ecosystem is autotrophic nutrition, which is photosynthesis (Option D).
What is the process of photosynthesis?The process of photosynthesis refers to a type of energy and mass production observed in autotrophic organisms such as algae in aquatic ecosystems which is known to generate oxygen as a product of these reactions.
Therefore, with this data, we can see that the process of photosynthesis is able to generate oxygen during these types of chemical reactions in autotrophic organisms.
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On the pH scale, what is
considered acidic?
A. below 7 this
B. 7
C. above 7
A. below 7
On a pH scale, 7.0 is considered neutral, while values higher than 7.0 are basic, and values less than 7.0 are acidic.
Use the internet to research advertising materials for electric cars. Draw inferences from the advertisements about the relationship between electric cars and fossil fuel use. Then, research credible sources to determine if the claims of the advertisements are accurate. As you are researching, think about whether there is any important or relevant information excluded from the advertisements. If so, what information is left out? If that information was included in advertisements, how would it alter a buyer's opinion of electric cars?
Answer:
Electric vehicles (EVs) offer an opportunity to replace fossil fuels in the transport sector. Electrification of the transport sector can also bring benefits in terms of increased energy efficiency and reduced local pollution. However, there are genuine concerns about meeting the future energy demand for charging EV batteries with clean and renewable sources. More importantly, the issue of long-term sustainability of EVs is underscored by the supply risks of critical material resources used in the EV batteries. Extraction of some of these material resources are linked to significant environmental impacts as well as social and ethical issues.
Explanation:
will a diamond leave a streak on a streak plate? explain
What is sustainability in biology
General category: Biology.
Sub-category: Ecology
Topic: Natural resources
Introduction:
The term sustainability describes how biological systems remain diverse and productive over time.
Explanation:Sustainability refers to how biological systems remain productive over time. In particular, the term sustainability is described as the balance of a species with its resources in its specific environment. On the other hand, sustainable development is exercising the correct use of current resources without compromising those of future generations. Therefore, sustainable processes preserve, protect and conserve current and future natural resources.
We can conclude that the correct answer is:
Answer:Sustainability refers to how biological systems remain productive over time. In particular, the term sustainability is described as the balance of a species with its resources in its specific environment.
Which of the following statements could be applied to "internal respiration"?
External respiration refers to inhalation and exhalation; while internal respiration is the exchange of oxygen and carbon dioxide between the cells and blood cells.
This means C, exchange of dissolved gases between blood in tissue capillaries and the body tissues, is the right answer.
Which statement best describes ecological succession?
A) It is always caused by human intervention.
B) It occurs after a disturbance.
C) It never occurs in a predictable pattern.
D) It is a series of rapid changes in an ecosystem.
Answer:
(D) it is a series of rapid changes in an ecosystem
Explanation:
What is the smallest unit of study in the area ofBiology?A. organ systemsB. tissuesC. ecosystemsD. molecules
The smallest unit of study in the area of biology is molecules, because they are the units from which all the structures and components of the cell (the fundamental unit of life) are formed.
The table lists traits and whether they arerecessive or not for two parents. Based on thedata table, if the parents reproduce and create anoffspring, the offspring will-A. definitely have red hair and most likelyhave brown eyes.B. most likely have brown hair and definitelynot have blue eyes.C. most likely have brown hair and definitelynot have blue eyes.D. most likely have red hair and maybe haveblue eyes.
If the parents reproduce and create an offspring, the offspring will definitely have red hair and most likely have brown eyes.
This is because both parents have red hair so they must be homozygous for that character, and as the mother has brown eyes, which is dominant, it is more probable that the phenotype will be expressed by their offspring.
Use the following scenario to answer questions 30-33
Jane really likes basil. She decided to find a way to make the basil grow faster by designing an
experiment. Jane took eight basil seeds and planted them in 8 pots that all received equal
amounts of sun. Each day Jane gave each of the eight plants equal amounts of water. The eight
plants were divided into four groups, A-D. The two plants in Plant group A received only water.
Plants Group B, received a cup of Miracle-Gro solution mixed at 25% less than the
recommended concentration once a week in place of the water. Plants in group C, received
Miracle-Gro solution mixed exactly at the recommended concentration once a week in place of
water, and the two plants in group D, received a cup of Miracle-Gro solution mixed at 25% more
than the recommended concentration once a week in place of the water. After 30 days of
growth, Jane measured the height of each plant.
29 What is the independent variable in this experiment? (Hint: Recall that the independent
variable is the one that is different between groups)
30 What is the dependent variable in this experiment? (Hint: Recall that the dependent
variable is the one that is measured)
31 What is the control group in this experiment?
32 What variables were constant in the different groups?
The independent variable is the concentration of Miracle-Gro.
The dependent variable is the height of each plant group.
The control group in the experiment is group A.
The constant variables in the different groups are the amount of sunlight received, the growth period, seed variety, and humidity.
What is the plant growth experiment?
A factorial experiment includes the study of plant growth. Several factors (seed, water) that are set at various amounts and a response variable make up a factorial experiment (plant height). Numerous elements, including seed type, water content, soil type, amount of light, temperature, humidity, and others, have an impact on plant growth.
The variable that differs between groups is known as the independent variable.
The one being measured is the dependent variable.
The Control group is the one that does not receive the new treatment being looked on.
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6 Before she leaves for school, Zari receives a text from her mom asking her to grab the chicken for tonight’s dinner out of the freezer to thaw. Where should Zari place the chicken so that it is ready when her mom gets home to start dinner? A. on the counter B. in a bowl of warm water C. in the refrigerator D. in the oven on low temp
Zari should place the chicken on the counter .
Zari should place the chicken on the counter because mom needs the chickens for dinner in night . Thawing means to go from frozen to liquid or soft usable form .
Thawing is needed for making the freeze materials into usable form that requires melting of ice and becoming soft . People use to preserve chickens in the refrigerator for long and safe use . But , before cooking the chicken it is needed to be thawed so to melt the ice and in order that is should be cooked properly .
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Process of Oxidation of NADH to NAD+ during aerobic respiration.
NAD+ is regenerated when the electrons from NADH are given into the mithocondrial membrane, in the electron transport chain. These electrons are used to sustain the proton gradient, that allows the production of ATP.
4. There are several biomes that are not marked "diverse" or "non-diverse." How would you describe those biomes? (3 points)
Biomes are large areas characterized by its soil, climate, vegetacion, and wildlife. There are five major types of biomes: grassland, florest, tundra, desert, and aquatic, they still can be divided into more specific categories, such as marine (aquatic), rainflorest (florest), savanna (grassland/desert), and others. The diversity of these biomes can be based in the animails and plants of the biome, diverse biomes have a wide variety of species and are considered more livable with less environment pressure and challenges that make the area more conducive to higher diversity. The Topical florests are widely considered to have the greatest species diversity of the terrestrial biomes, with nice climate and food for the wildlife. The non-diverse biomes have extreme conditions that make them have lower diversity, for example, tundra and deserts have low diversity because of the climate and the condictions of soil and water.
Which diagnostic test evaluates the spinal cord using a radiopaque dye and an X-ray?
O myelogram
O brain scan
O encephalography
O PET scan
Answer: Myelogram
Explanation:
I need help with this practice problem solving *****Answer in your own words*****Give a general description of the plant species: Dandelions and
The result of the following cross indicates the orange eyes are _____ black eyes.
The result of the following cross indicates that orange eyes would be recessive to black eyes.
According to Mendel, a cross between two people who are heterozygous for a dominant trait would result in offspring with a 3:1 phenotypic ratio, with the dominant trait making up around 75% of the phenotype and the recessive trait making up the remaining 25%.
The black eye color phenotype in this instance is 247, whereas the orange eye color phenotype is 86.
Calculating each trait's proportion
247/333 ×100%, or 74.1%, are black eyes.
Orange eye: (86/333 x 100%) = 25.8%
74.1:25.8 is approximately 3:1
It follows that black eyes are dominant and orange eyes are recessive.
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The given question is incomplete. The complete question is:
The result of the following cross indicates the orange eyes are _____ black eyes. A cross between two aliens with black eyes. Their offspring have two phenotypes. 247 of them have black eyes, and 86 of them are orange-eyed. The total number of offspring is 333.
The information below shows the different genotypes that were observed during the meiosis simulation and the number of copies of each genotype that were present at the end of all rounds of meiosis. Use this info to answer the below question:
EAD- 6
EaD- 19
Ead- 25
eAD-25
eAd- 19
ead-6
Which genotype that were observed in one or more daughter cells was also present in the parental cell?
Which were ONLY in the daughter cell? Which were ONLY in the parental cell?
Ead-25 genotype that were observed in one or more daughter cells was also present in the parental cell.
EAD- 6 genotype were ONLY in the daughter cell.
What do you mean by genotypes?An organism's genotype is its specific combination of alleles for a given gene. So, for example, in the pea plants above, the possible genotypes for the flower-color gene were red-red, red-white, and white-white. The phenotype is the physical manifestation of an organism's allelic combination.
Moreover, genotype, the genetic constitution of an organism. The genotype determines the hereditary potentials and limitations of an individual from embryonic formation through adulthood. Among organisms that reproduce sexually, an individual's genotype comprises the entire complex of genes inherited from both parents.
Hence, alleles of the same gene are either autosomal dominant or recessive. An autosomal dominant allele will always be preferentially expressed over a recessive allele. The subsequent combination of alleles that an individual possesses for a specific gene is their genotype.
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What structure of the leaf transports water and nutrients from the roots to the leaves?A. Cell wallB. ChloroplastC. PhloemD. Xylem
The correct answer is the letter D. XYLEM
Xylem is a main component of vascular tissue in plants that is responsible for transporting water and nutrients from roots to plants' leaves.
1. A student prepared three different red blood cell suspensions as follows:SuspensionContentsA red blood cells + normal blood serumB red blood cells + 10% salt solutionсred blood cells + distilled waterWhich suspension, when viewed under the microscope, would contain red blood cells that appear wrinkled and reduced in volume?O Suspension AO Suspension BSuspensionООO None of these suspensions
Suspension B will have cells that appear shrinked
All of the following are located in the cytoplasm except:a) chloroplastb) nucleolusc) rough endoplasmic reticulumd) mitochondriae) lysosome
All of the following are located in the cytoplasm except (b) nucleolus. The nucleolus is located inside the nucleus. It is concentrated with chromosomes giving its dark appearance.
A barracuda stalking a school of parrot fish is an example of(A) altruistic behavior.(B) cognitive behavior.(C) competitive behavior.(D) foraging behavior. I think it’s answer (C) but I just want to make sure!
Here we have a barracuda a predator fish and parrotfish as prey, now if we analyze each available option we can see that option A is not correct as there is no benefit for the parrotfish, option B is not correct either as predation is an instinctive behavior. Now with option C, we must be careful as in the first place predation leads to competition, however, in this case, there is no mention of other predator fish be another barracuda, or other species meanwhile option D, foraging behavior implies the consumption of food, seeking, selection and manipulation of it so in this particular case, stalking a school of fish falls under this category, therefore option D is the correct answer.