Answer: c
Explanation:
Answer:
c
Explanation:
why dolphin and crocodile come up to the water surface for breathing
Answer:
Fish use their gills to take oxygen from the water that they live in. But people get the oxygen we need by breathing air, using our lungs. Whales and dolphins use their lungs to breathe air also. That's one reasons why they come to the surface of the ocean.
Question 5
1 pts
What organelle of a cell has the genetic information?
O Vacuole
O Mitochondria
Chloroplast
O Nedeus
Answer:
nucleas
Explanation:
A hypothesis is a statement that can be tested through a scientific investigation. What is the purpose of writing a hypothesis? A. Hypotheses help identify the variables. B. Hypotheses suggest new questions for further investigations. C. Hypotheses always match the conclusion. D.
Answer:
B. Hypotheses suggest new questions for further investigations.
Explanation:
Though the microbes described in the introductory chapter do not corrode the metal in the subway, many microbes influence corrosion and deterioration of metal and stone. Other microbes have other effects on their environment. During wastewater treatment, bacteria are used to reduce the amount of organic and inorganic materials so that the water no longer supports substantial microbial growth. During secondary wastewater treatment, bacteria within sludge digesters break down organic materials into fatty acids, H2, and CO2. These products are fermented to acetate, CO2, and H2. Finally, archaeans ferment acetate to form methane and carbon dioxide. Just by knowing this information, what is true of the bacteria used in sludge digesters?
a. They are capable of anaerobic metabolism.
b. They are sulfate-reducing bacteria.
c. Some are methanogens.
d. They are capable of forming slime layers.
Answer:
a. They are capable of anaerobic metabolism.
c. Some are methanogens.
Explanation:
The bacteria used in order to treat wastewater can be classified as anaerobic, aerobic, and facultative. Anaerobic bacteria are able to treat wastewater in low or null oxygen conditions by the process of methanogenesis. Methanogenesis is a metabolic process that involves the formation of methane (CH4) by anaerobic Archaea known as methanogens. The process of methanogenesis occurs in anaerobic environments, such as during waste sludge treatment, where these microorganisms are able to breakdown organic pollutants. Methanogens produce methane during catabolic pathways that involve the breakdown of complex molecules into simpler molecules.
Which of the following describes how regions of phospholipids are arranged in the cell membrane?
Answer:
phospholipds are arranged in the phospholipid bilayer, inside the plasma membrane.
Explanation:
they have one hydrophilic head and two hydrophobic tails.
Phospholipids are amphipathic molecules that compose the cell bilayer membrane. Among the options, D is correct. Hydrophobic fatty acid regions face each other within the interior of the cell membrane.
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Two lipidic layers compose the cell membrane. There are also proteins and glucans incrusted in between.
The complex lipids that compose the membrane are amphipathic molecules. A phospholipid is composed of
two fatty acid chains ⇒ hydrophobic tails, glycerol and a phosphate group ⇒ hydrophilic heads negatively charged
Phospholipids are arranged as a bilayer. Their hydrophilic polar heads face the exterior and the interior of the cells, while their hydrophobic tails are hidden against each other, constituting the internal part of the membrane.
According to this framework, we can choose the best answer among the options,
A) Hydrophilic phosphate regions face each other within the interior of the cell membrane ⇒ Incorrect ⇒ Heads are not facing each other. They are in contact with the cell exterior and interior.
B) Hydrophilic phosphate regions are positioned toward nonpolar environments ⇒ Incorrect ⇒ Phosphate regions are in contact with water.
C) Hydrophobic fatty acid regions are positioned toward polar environments ⇒ Incorrect ⇒ tails can not be in contact with water.
D) Hydrophobic fatty acid regions face each other within the interior of the cell membrane ⇒ CORRECT.
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Which of the following body cavities contains the urinary bladder?
A. Pelvic cavity
B. Vertebral cavity
C. Dorsal cavity
D. Thoracic cavity
Explanation:
[tex]pelvic \: cavity[/tex]
The body cavities contains the urinary bladder is pelvic cavity. Thus, option A is correct.
What is urinary bladder?
Urinary bladder is a temporary storage part for storing urine and it collects urine after that create sensation and than urination is controlled my motor.
The capacity of urinary bladder is 400- 600 mL but it can increases as high upto 1000mL.
The urinary bladder is particularly sac like structure made up of muscle and the shape of it is like a pear. It is present in the pelvic cavity, and the bladder become empty just after urination.
To avoid bladder infection a person must drink proper amount of water, as well as cranberry juice and he must east probiotics and garlics in daily diet.
Therefore,the body cavities contains the urinary bladder is pelvic cavity. Thus, option A is correct.
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Which organelle aids in the maintenance of cell homeostasis by selectively regulating The passage of materials into and out of the cell?
A. Plasma membrane
B. Lysosome
C. Ribosome
D. Nuclear membrane
Answer: Plasma Membrane.
Explanation:
Plasma membrane controls what goes in and out of the cell and maintains a stable internal environment.
Lysosomes breaks down dead stuff and can program the cell death.
Ribosomes create proteins.
A woman is 32 years old, after fiscussion it was noticed that she got her puberty at the age of 16 and has one children. How much polar bodies were formed at the age of 32?
Answer:
134
Explanation:
Polar bodies are formed each month after attaining puberty. Hence, total years of polar bodies formation are equal to the difference between the age of puberty till date.
Hence, total years of polar bodies formed = 32-16= 16
Hence, total number of polar bodies formed 16×12= 192
For one child absence of polar bodies formation = 15 months, where 9 months of gestation and 6 months of lactation.
So, for 1 child, it will be 15 x 1 = 15
Hence, net polar bodies formed in her body till date - 120 + 1 - 15 = 134
Hence, net polar bodies formed in her body till date 134
This organelle removes and recycles waste from the cell
O. Cytoplasm
O. Golgi Apparatus
O. Lysosome
O. Ribosome
Answer: Lysosome
Explanation: A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria. (Hope this helps!)
Describe the energy-releasing reaction shown in figure 1
idkeubeekenebekeenne
The energy-releasing reaction shown is the reaction of phosphorylation of fructose-6-phosphate to fructose-1, 6-bisphosphate.
Phosphorylation simply means the biochemical process that has to do with the addition of phosphate to an organic compound.
In this case, there's a reaction with fructose-6-phosphate to fructose-1, 6-bisphosphate.
Also, the ATP molecules have three high-energy phosphate groups which are vital for the transfer of one of its phosphate groups to fructose-6-phosphate and also provide energy to carry out the reaction.
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25 POINTS + BRAINLIEST PLEASE HELP
If a cell's lysosomes were damaged and stopped functioning, the cell would
not be able to break down necessary nutrients
not be able to direct protein construction
lose structure, shape, and the ability to move
lose the ability to release waste products
In the picture,how does the thermal energy definitely flow?
what are the levels of organization systems from simple to complex?
Answer:
maybe if you payed attention in class, you would know the answer.
Explanation:
What is required for sexual reproduction to occur?
1.an individual that produces sperm and an individual that produces eggs
2.an individual that produces sperm and an individual that produces spores
3.an individual that produces buds and an individual that produces spores
4. an individual that produces buds and an individual that produces eggs
Answer:
1
Explanation:
It sexual reproduction you need both a sperm and egg cell.
Answer: 1. an individual that produces sperm and an individual that produces eggs
Explanation:
PLSS HELPPPPP MEEEEEEE!!!!!!!!!!!!!!
How are ocean currents
similar to ocean waves in your own words?
Answer:
Swells are typically smooth waves, not choppy like wind waves. A swell is measured from the crest (top) to the trough (bottom). An ocean current is a continuous flow of water in the ocean. Some currents are surface currents while other currents are much deeper flowing hundreds of feet below the surface of the water.
Star A has a surface temperature of 6000K, and its thermal emission peaks at 480nm.
Star B is three times as hot. Its thermal emission must peak around:
1920nm
160nm
240nm
120nm
960nm
Answer:
the answer is 1920nm
Explanation:
plz give me brainiest
A change in which of the following is least likely to impact primary productivity?
A. Nitrate
B. Dissolved oxygen levels
C. Dissolved carbon dioxide levels
D. Phosphate
Answer:
its C just did the test pennfoster :)
describe how the organization of a multicellular organisms helps it function.
Part A
If the newly-founded island population of moths in your GENETIC DRIFT Lab
simulation contains 30 (BB) black, 12 (Bb) grey, & 3 (bb) white moths, what is
the frequency of the white alleleb alleles) for the moth-coloration gene in the
population
10%
139
200
Submit
Request Answer
Answer:
0.2 (or 20%)
Explanation:
The allele frequency can be calculated by counting how many times an allele appears in a population and then by dividing this number by the total number of alleles of the gene. In this case,
- Genotype BB = 30 moths >> 60 copies of the B allele
- Genotype Bb= 12 grey moths >> 12 copies of the B allele and 12 copies of the b allele
- Genotype bb= 3 white moths >> 6 copies of the b allele
The total number of copies of the gene is:
Dominant (B) allele = 60 (BB genotype) + 12 (Bb genotype) = 72 B alleles
Recessive (b) allele = 12 (Bb genotype) + 6 (bb genotype) = 18 B alleles
Then, 72 + 18 = 90 alleles
Allele frequencies:
Dominant (B) allele = 72/90 = 0.8 (or 80 %)
Recessive (b) allele = 18/90 = 0.2 (or 20%)
The frequency of the white allele b alleles for the moth-coloration gene in the population - 40%
The frequency of an allele can be calculated by dividing the number of times the allele of interest is observed in a population by the total number of copies of all the alleles at that particular genetic locus in the population
Total number of b alleles = number of alleles present in recessive bb + number of alleles present in heterozygotes Bb
Number of bb individuals = 3 Number of b alleles present in bb = 3 × 2 = 6 Number of Bb individuals = 12 Number of b alleles present in Bb = 12 × 1 = 12 Total number of b alleles = 6 + 12 = 18the frequency of an alele = 18/45
= 40%
Thus, the frequency of the white allele b alleles for the moth-coloration gene in the population - 40%
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Tides are caused by the gravitational pull of the moon and the sun on Earth's
1. equator
2. land surface
3. poles
4. surface waters
Answer:
surface water
Explanation:
HELP HELP HELP ASAP ILL GIVE 100 points
Answer:
What's the question you need help with?? I will try my best to help. I'm not taking free points btw. I'm just wondering on what your question is
Which of the following best describes a heritable adaptation brought about by natural selection?
Answer:
polar bears begin to eat goose
Explanation:
Welp which chicken wing is this chart describing left or right chicken wing explain ur answer I'm definitely gonna get a zero
A unicellular protist that carries out the process of photosynthesis would be classified as a...
1) producer
2)saprophyte
3) predator of green algae
4) decomposers of inorganic compounds
Answer:
1) THIS WOULD BE CLASSIFIED AS A PRODUCER.
A unicellular protist that carries out the process of photosynthesis would be classified as a producer.
PRODUCERS:
A producer in an ecosystem is an organism that possess the ability to synthesize their own food. Producers make use of photosynthesis (light energy) or chemosynthesis (chemical compounds) to synthesize their energy source. The energy production that is initiated by producers is transferred in the ecosystem when they are fed on. Examples of producers are green plants, photosynthetic bacteria, algae etc. Therefore, a unicellular protist that carries out the process of photosynthesis would be classified as a producer.Learn more at: https://brainly.com/question/20310424?referrer=searchResults
Which processes/components of the phosphorus cycle would make up the short-term phosphorus cycle?
Answer:
Waste is broken down, phosphate is released
Explanation:
The short cycle consists of the following:
Waste from living things is recycled by decomposersDecomposers break down wastes and dead tissuesDecomposers release the phosphates into the soilHope this helps!
Choose the best definition of homeostasis.
A. The stable internal conditions organisms maintain
B. The sympathetic nervous system
C. Stressors or changes in the environment
D. The fight-or-flight response
Answer:
A. The stable internal conditions organisms maintain
20. Individuals with more than 5 fingers on each hand have a disorder
called "polydactyly." Shaded individuals on this pedigree have polydactyly.
Which is true?
Polydactyly is autosomal recessive
Polydactyly is autosomal dominant
O Polydactyly is sex-linked recessive
Polydactyly is caused by an extra chromosome
similarities between viruses and non living things
Explanation:
nonliving characteristics include the fact that they are not cells have no cytoplasm or cellular organelles and carry out no metabolism on their own and therefore must replicate using the host cell's metabolic machinery. And viruses can infect animals, plants and even other microorganisms.
Planet X is a terrestrial planet in our solar system. It has 21% oxygen in its atmosphere. Humans can walk on this planet without the aid of a space suit. Based on the description, planet X is____ .
a.Earth
b.Mars.
c.Mercury
d.Venus
Answer: the answer is actually earth
Explanation: A
The diagram shows the life cycle of a pine tree. What does stage 5 show?
A.) Young female cones produce spores from cells that divide using meiosis.
B.) A spore divides and grows into a pollen grain using mitosis.
C.) Young male cones produce spores using meiosis.
D.) A seed develops after the sperm from a pollen grain fertilizes the egg in an ovule.
Answer:
A
Explanation:
i took this quiz and I am pretty sure it is A
please dont be mad if it wrong
Stage 5 could represent "Young female cones produce spores from cells that divide using meiosis" (option A).
What is the life cycle of a pine tree?The life cycle of a pine tree begins with the production of male and female cones on the tree. Male cones produce pollen grains, which contain the male gametes or sperm cells, while female cones produce ovules, which contain the female gametes or egg cells. Pollen grains are carried by the wind and land on the female cones, where they fertilize the egg cells.
The fertilized egg cells then develop into seeds, which are protected by the woody scales of the cone. The cones mature and open, releasing the seeds, which can be dispersed by the wind, animals or gravity. The seeds then germinate and grow into seedlings, which develop into juvenile trees.
As the tree grows, it produces more cones, and the cycle repeats itself, ensuring the continued propagation of the species. This cycle can take several years to complete, depending on the species of pine tree.
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