Answer:
D. At a pH too far from 7.4, enzymes in the blood will stop functioning properly.
Explanation:
The pH of blood is regulated 7.35 and 7.45. pH shows acid-base balance in the body and maintains a healthy balance of acidity and alkalinity.
Balance of acid-base provides optimum condition to enzymes to perform proper function. As, enzymes required optimum pH range for functioning properly, pH too far from 7.4 can denature the enzymes. Enzymes will lose its shape and will not function properly at high pH.
Hence, the correct option is D.
A team of marine biologists observe that an inland sea is covered with a green slime. They also observe that besides fishing, the local population
practices large-scale farming in the area. In what possible way can farming be responsible for the state of the lake?
A.
Nutrients from fertilizers on the farm wash off into the lake and cause the green slimy algal bloom
B.
Pesticides from the farm wash off into the lake, causing algae to die and producing a green slime.
C.
D.
E.
Plants growing in the farm increase the chlorophyll levels in the ground, which runs off into the lake, causing the green slime.
The plants in the farm deplete the lake of nutrients and kill off microscopic organisms, causing the green slime.
The green slime in the lake is a toxin produced by pesticides that run off into the lake.
Reset
Next
Answer:
A.
Nutrients from fertilizers on the farm wash off into the lake and cause the green slimy algal bloom
Explanation:
This question describes a team of marine biologists, who observe an inland sea covered up with a green slime. Firstly, this green slime is the the visible form of the proliferated growth of algae, hence, causing what is referred to as ALGAL BLOOM.
Algal bloom is caused by EUTROPHICATION, which is the pollution of water bodies with nutrients from fertilizers e.g phosphate, nitrate etc which causes a rapid algae growth. The excessive nutrients causing this algal bloom appearing like a green slime comes from the fertilizers used by farmers practising large scale farming within that area.
When this fertilizer is applied on plants, it gets washed into the water body and its constituents e.g phosphorus, nitrogen etc. serves as source of nutrient for the growth of marine organisms (algae). Hence, they grow excessively and form a bloom that appears like a green slime on the lake.
Hence, the farming activities is releasing pollutants in form of chemical substances which serve as nutrients for the proliferated growth of algae.
Answer:
B. Pesticides from the farm wash off into the lake, causing algae to die
Explanation:
Green slime algae is a type of algae which is found in the marine ecosystem. This algae is a source of food for aquatic animals. It requires nutrients for producing food in the process of photosynthesis. When the nutrients present in the fertilizers such as nitrates move from the farm into the nearby lakes, its population increases and more food is available for the marine animals and fishing is not possible. But this decrease occurs in population when the pesticides wash off into the lake so farming will be possible for the fisheries.
A general explanation of what cancer is
An explanation of what the test for BRCA genes indicates for patients with
a positive or negative result
Benefits of testing
Drawbacks of testing
Answer:
Cancer is a disease caused by unregulated cell division,
if someone has a mutated version of the brca gene they are more likely to develop breast cancer because the brca gene regulates the cell cycle.
Benefits: can regularly test for cancer if you know you're at risk
drawbacks: may create anxiety in the person
Explanation:
Which is a kingdom?
O A. Animalia
O B. Eukarya
C. Mammalia
O D. Prokarya
Define and explain the term scientific theory
Answer:
A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.
Explanation:
Sorry if wrong
A___ is two or more substances that are together in the same place but are not chemically
combined.
Answer:
Chemical Mixtures
A mixture is a material system made up of two or more different substances, which are mixed but not combined chemically. A mixture refers to the physical combination of two or more substances in which the identities of the individual substances are retained.
Explanation:
hope it helps : )
which chromosomes are the sex chromosomes A. chromosomes 1-22 B. the 3rd pair of chromosomes C. the 22nd pair of chromosomes D. the x and y chromosomes
Answer:
D.
Explanation:
Of the 23 pairs of chromosomes, the X and Y are the pair that determines the sex of the child. X chromosomes stand for female, while Y chromosomes stand for male.
XX means a female
XY means a male
Hope this helps!
what special cells and tissue do flatworms have in their excretory and nervous system
Answer:Phylum Platyhelminthes
Explanation:
Giving 30 points and brainliest to the first answer
What are the catalysts that speed up chemical reactions in the human body called?
A. Hormones
B. Reactants
C. Products
D. Enzymes
The cavities in the brain that fill with cerebral-spinal fluid are called _______
A. Ventricals
B. Relay stations
C. Axon stations
Which contains dozens of carcinogen
help, i have info there and i need the punnet square filled! plz
Answer:
X. x
Y /. XY / Yx
----------
y /. Xx / xy
Explanation:
hope this helps
Which of the following aquatic ecosystems is likely to have both a littoral and benthic zone?
a Lake
b Open ocean
c Coral reef
d None of the above
Answer:
C. Coral reef
Explanation:
Coral reefs are both found in the littoral zone which is on the shore in a tidepool and in the benthic zone which is the low level of the ocean.
The aquatic ecosystems that is likely to have both a littoral and benthic zone is lake. The correct option is a.
What is littoral and benthic zone?The benthic zone, like the ocean, is the lake floor, made up of accumulated sunken organic matter.
The littoral zone is the area adjacent to the shore where light can easily penetrate and aquatic plants thrive. The pelagic zone encompasses a large body of water.
The Benthic Zone consists of organic sediments and soil at the bottom of a pond or lake. This zone will expand as the body of water ages. It is regarded as the digestive system of a pond or lake.
The littoral zone is a pond or lake's down-sloping shelf. This is the area that extends from the high-water mark to the shore and into the area where sunlight penetrates to the sediments at the bottom of a body of water.
Thus, the correct option is a.
For more details regarding aquatic ecosystems, visit:
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How does DNA homology measure genetic relatedness ?
Answer:
by the nitrocellulose membrane filter method. (more info below)
Explanation:
Genetic relationship between mycoplasma as determined by nucleic acid homology. DNA from each of the mycoplasma isolates tested was reacted separately by complementary RNA synthesized with homologous or heterologous DNA as a primer. The amount of DNA-RNA hybrids formed was tested using the method of the nitrocellulose membrane filter.
hope this helped!
How much sperm does a man produce each day
Answer:
about 525 billion sperm cells
Explanation:
In fact, the average male will produce roughly 525 billion sperm cells over a lifetime and shed at least one billion of them per month. A healthy adult male can release between 40 million and 1.2 billion sperm cells in a single ejaculation.
Answer:
1,500
uring spermatogenesis, your testicles make several million sperm per day — about 1,500 per second. By the end of a full sperm production cycle, you can regenerate up to 8 billion sperm. This may seem like overkill, but you release anywhere from 20 to 300 million sperm cells in a single milliliter of semen.
What is 80 multiplied by 80
Answer:
80 * 80
6400
Explanation:
It can be done by simple ways but making it 80^2
80 = 75 + 5
so u can use the formula of (a + b)^2
HOPE IT HELPS :)
PLEASE MARK IT THE BRAINLIEST!
Alcoholic fermentation
1. Forms fewer ATP molecules and cellular respiration
2. Uses oxygen and ATP molecules as reactants
3. occurs in the muscle cells of animals and humans
Answer:
A.
Explanation:
It converts sugars into cellular energy without requiring much oxygen, but it doesn't provide nearly as much energy as a result of the process not using oxygen.
Answer:
1. Forms fewer ATP molecules and cellular respiration
Explanation:
Alcohol fermentation is usually done by yeast as us humans lack the genetic information to do it (however we can do lactic acid fermentation in low Oxygen level which produce Lactic acid, which is what hurts after a day or two of heavy playing or workout)
Alcohol Fermentation only produces two ATP which is significantly lower than what cellular respiration makes (scientists predict there to be about 38 ATP from per cycle of respiration)
How are tumor cells different from normal cells?
A. There are chromosomes in tumor cells.
B. Mitosis is not regulated in tumor tumor cells.
C. Tumor cells use meiosis to replicate.
D. Tumor cells are haploid and other cells are diploid.
Answer:
B
Explanation:
Which best describes Earth's south magnetic pole?
O A. Aligned with the geographic North Pole
O B. Aligned with the geographic South Pole
O C. Stationary
D. Moving
Answer:
Which best describes Earth's south magnetic pole?
D - Moving
The south magnetic pole is the point on Earth's Southern Hemisphere where the geomagnetic field lines are directed vertically upwards. The Geomagnetic South Pole, a related point, is the south pole of an ideal dipole model of the Earth's magnetic field that most closely fits the Earth's actual magnetic field.
Best describes Earth's south magnetic pole D. Moving
What is the difference between the geographic North Pole and magnetic north pole?Geographic north (also called "true north") is the direction towards the fixed point we call the North Pole. Magnetic north is the direction towards the north magnetic pole, which is a wandering point where the Earth's magnetic field goes vertically down into the planet.
To learn more about The south magnetic pole, refer
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Why does sexual reproduction result in more genetic variation in a species than asexual reproduction?
A. In sexual reproduction, offspring have more chromosomes than either parent.
B. In sexual reproduction, offspring are haploid organisms.
C. In sexual reproduction, offspring have fewer genes.
D. In sexual reproduction, offsprings are not identical to either parent.
Which of the following would help decrease Global Warming?
A. Drive hybrid/fuel efficient cars
B. Burn fossil fuels
C. Deforestation
D. Use aerosol cans
Answer:
The correct answer would be A.
Explanation:
All of the other things would increase global warming
plz help
what type of adaption would an animal have if they were able to hold there breath for an hour? if u can explain plz
Answer:
They will slow down their heart rate and will change their blood flow to parts like the brain, heart and other important organs and have positively charged oxygen-binding proteins, called myoglobin, in their muscles.
Hope this helped!
3. If a bar magnet's neutral region is broken in two, what will most likely occur?
A. Neither segment will have a north or south pole.
B. The segment that's longer will have a north and south pole.
C. Each of the two segments of the original bar magnet will have a north and south pole.
D. One segment will have only a north pole, the other segment will have only a south pole.
The Answer Is C. Each of the two segments of the original bar magnet will have a north and south pole.
Explanation:
It is because the the properties of magnets state that how many ever segments we divide the magnet the new segment will have north and south pole despite its size
Answer: C. Each of the two segments of the original bar magnet will have a north and south pole.
Explanation:
How do free-living flatworms, tapeworms, and flukes eat?
Answer:
Free-living flatworms ingest food
Explanation:
in the bed or on the bed? give your reasons.
Please help me with answer I need help
Question 8 (1 point)
The scientific method utilizes which of these 4 strategies?
A) Hypothesis, Descriptive, Analysis, Publication
B) Hypothesis, Design, Analysis, Appllication
C) Hypothesis, Design, Analysis, Publication
D) Hypothesis, Research, Analysis, Replication
Answer:
D) Hypothesis, Research, Analysis, Replication
Explanation:
The scientific method is a research method used to produce knowledge. It consists of systematic observations, measures, experimentation, analysis, and verification of a hypothesis. It is based on two aspects: reproducibility (the capability of reproducing the experiment in any other place by any researcher) and refutability (susceptibility to be refused).
There are different steps to follow in a scientific method:
Definition and problem statement. The question for which there is not an answer yet.Hypothesis formulation. A hypothesis is a scientific conjecture, not verified that requires corroboration. Data collection and analysis. This step involves testing the observations.ResultsVerification of hypothesis. This step involves the deriving of the working hypothesis.Conclusions and Discussion.These steps also include previous knowledge about the study object. A question the investigator wants to answer. The goal, which is what the investigator wants to know. The hypothesis that the investigator makes in order to predict what is going to happen. The experiment is performed to answer the question. Conclusions where the hypothesis is rejected or accepted.
This scientific method needs to be replicable. Replication refers to the need of repeating a research study, under different situations, different subjects, and with different researchers, to determine the safety of the original findings and their possibility of generalizing them to other situations and participants.
how do sponges repoduce sexually and asexually
Complete the following sentence correctly: ___________ rocks leads to the transformation of igneous rock into sedimentary rock by moving it __________, exposing it to energy from __________. *
O uplift, upward, the Sun
O subduction, downward, Earth's Interior
O uplift, downward, Earth's Interior
O subduction, upward, the Sun
Complete the following sentence correctly: _________ leads to the transformation of sedimentary rock into metamorphic rock by moving it _____________, exposing it to energy from __________. *
O uplift, upward, the Sun
O subduction, downward, Earth's Interior
O uplift, downward, Earth's interior
O subduction, upward, the Sun
Answer:
A, B
Explanation:
Sedimentary rocks are near the surface so the only one that works for that is A, sedimentary rocks are formed with water too, it weathers away at the rocks to form little sediments
Metamorphic rocks are in the earths interior and sedimentary are at the exterior, metamorphic rocks are formed through extreme heat and pressure meaning its near the earths interior
I hope this helps u!
Pls give brainliests( had 40 down to 2 no reason :( ) and a thx ;)
Sedimentary rocks leads to the transformation of igneous rock into sedimentary rock by moving it has been exposing it to energy from sediments as uplift, upward, the Sun and subduction, downward, Earth's Interior.
What is the sedimentary rocks?Sedimentary rocks are near the surface so the only one that works for that is sedimentary rocks are formed with water too, it weathers away at the rocks to form little sediments and metamorphic rocks are in the earths interior and sedimentary are at the exterior, metamorphic rocks are formed through extreme heat and pressure meaning its near the earths interior.
Igneous rocks has been called the magmatic, are all rocks that are formed by the solidification of magma. However, igneous rocks are classified into two groups. First are the plutonic or intrusive igneous rocks that are the result of the solidification of magma within the lithosphere. Secondly, there are the volcanic or extrusive igneous rocks that are the result of the cooling of magma that occurs at the surface or a shallow depth.
Therefore, Sedimentary rocks leads to the transformation of igneous rock into sedimentary rock by moving it has been exposing it to energy from sediments as uplift, upward, the Sun and subduction, downward, Earth's Interior.
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. Chemical digestion _____. ends in the small intestine ends in the esophagus begins in the esophagus begins in the stomach
Answer:
I believe that chemical digestion begins in the mouth and ends in the small intestine.
Hope his helps.
Explanation:
A hormone released by the _____ controls the amount of calcium in the blood. thymus gland thyroid gland adrenal glands parathyroid glands
