Answer:
The main job of red blood cells, or erythrocytes, is to carry oxygen from the lungs to the body tissues and carbon dioxide as a waste product, away from the tissues and back to the lungs. Hemoglobin (Hgb) is an important protein in the red blood cells that carries oxygen from the lungs to all parts of our body.
Explanation:
The diploid cells of a polar bear contain 74 chromosomes.
How many chromosomes are there
The genetic material that is passed from a parent to a child is called a chromosome. With a diploidy of 74 chromosomes, the haploid cell of the polar bear will have 37.
What is the difference between haploid and diploid cells?The number or ploidy of chromosomes in the somatic or germinal cells determines whether a cell is diploid or haploid. A twofold set of chromosomes is referred to as diploidy and is symbolized by the number 2n.
Haploidy, which is denoted by the number n, refers to the single or partial set of chromosomes found in germinal or reproductive cells. They describe the gametes that participate in fertilization.
If a polar bear's diploid cells (2n) have 74 chromosomes, its haploid cells (n) will have the following chromosome makeup:
2n = 74
n = 37
Therefore, option C is correct.
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16. The substances that are reabsorbed did not diffuse (move) from the nephron bowl into the
renal vein cup. You needed to use lots of energy to make reabsorption happen. Which
process do you think the kidney uses to transport these substances from the nephron to the
renal vein-active transport or diffusion (passive transport)? Explain your answer.
Answer:
Active transport.
Explanation:
The kidney uses active transport to move these substances from the nephron to the renal vein because these substances did not moves from the nephron bowl to the renal vein through simple diffusion so for this purpose active transport is used in which energy is spent in order to move the substances from one region to another so we can say that kidney must use active transport to move reabsorbed substances from the nephron to the renal vein.
1. Which animal has the highest body temperature when the environmental temperature is 15 degrees Celsius?
A) Rabbit
B) Snake
C) Cat
D) Alligator
2. At 86 degrees Fahrenheit, what is the body temperature of the pigeon?
A) 30 degrees C
B) 40 degrees C
C) 41 degrees C
D) 47 degrees C
3. According to the graph, which ectotherm can live in the coldest environments?
A) Snake
B) Cat
C) Lizard
D) Rabbit
Answer:
1. C) Cat
2. D) 47 degrees C
3. B) Cat
HELP ME ASAP! bbbbbb
Answer: I'm gonna say the answer is Mutualism.
Which of the following is a natural process that can quickly put large amounts of gas and solid materials directly into the stratosphere?
A. an earthquake
B. a volcanic eruption
C. a landslide
D. a flood
A group of scientists studied the effects of exercise on insulin sensitivity in elderly women. The scientists measured the amount of insulin secreted in the saliva when given glucose. Measurements were taken at 0, 20, 40, and 70 minutes after the glucose was administered. The graph shows the data collected before and after a four-month exercise program was put into place
Which statement BEST analyzes the data shown in the graph?
A. Elderly women secrete more insulin the more they exercise.
B. Exercise decreases insulin sensitivity in elderly women.
C. Insulin sensitivity is at its highest after 50 minutes.
D. Insulin sensitivity increases as exercise decreases.
Help please brainliest involved
Transport of large molecules such as starch across the cell
membrane can occur through
a Endocytosis
b Exocytosis
C Both A and B
d None of the above
Explanation:
I think its D...
It seems like active transport
What is it called when certain species have evolved such intimate symbiotic
relationships that individuals of either species cannot survive without one another?
a. obligate
b. parasitic
c. mutualistic
d. facultative
Answer:
A. Obligate
Explanation:
An obligate relationship is one where both organisms are interdependent with one another in a way that one cannot survive without the other.
A parasitic relationship is where one organism benefits, and the other is harmed.
A mutualistic relationship is one where both organisms "work together," therefore benefiting one another.
A facultative relationship is where both species benefit off of one another, but are not fully dependent on one another to the point they cannot survive without their symbotic partner.
according to the nebular theory which planet is most likely to be a gaseous rather than Rocky
a. mercury
b.earth
c.Neptune
Answer:
i think its neptune
A student is investigating mechanical and electromagnetic waves. She is creating a list of questions to include in her investigation about the properties of each type of wave. Which is NOT a question that she can ask that will allow her to learn about the properties of both mechanical and electromagnetic waves?
A
What is the amplitude of the wave?
B
What is the frequency of the wave?
C
What is the wavelength of the wave?
D
What is the wave speed in a vacuum?
Answer:
It would be B
Explanation:
I am sorry if it is wrong
"What is the frequency of wave?" is not a question that she can ask. Thus, the correct option is B.
What is the frequency of wave?Wave frequency is the number of waves which pass through a fixed point in a given amount of time. The SI unit for wave frequency is the hertz (Hz). One hertz (Hz) equals 1 wave passing a fixed point in the time period of 1 second. A higher-frequency wave has more energy than a lower-frequency wave with the same magnitude of amplitude.
The equation used for determination of wave frequency (f) will be:
f = v/λ
where λ is the wavelength in meters and v is the speed of the wave in m/s.
Therefore, the correct option is B.
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Will give brainlest 100 points
Answer:
try b
Explanation:
Is DNA replicated during Interphase II?
A. Yes
B. No
Who is my dad? Please help
She forms a hypothesis that the color reaches the flower through the stream.what should maria do to confirm the hypothesis
what are preconditions for planting tree
As carbon moves throughout earths systems how are different parts of the biosphere(the part occupied by living things) affected?
Answer:
Carbon is an essential factor to the survival of living things.
Explanation:
It is produced as a waste by-product of metabolism in living organisms and combines with oxygen to be released as Carbon Dioxide (CO2).
Plants on the other hand require CO2 to process sunlight and nutrients into energy. They in return release oxygen which is required by animals to break down food.
Factories, businesses, people (as they generate electricity, transport people and goods, etc) release lots of carbon into the atmosphere it also combines with oxygen again to form C02.
The ocean and water bodies also serve as a collecting conduit of CO2, especially where the water temperature is relatively warm. When CO2 is captured by the ocean, it is used by some sea animals to make shells.
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What forms of energy are there?
mechanical, kinetic, potential, gravitational, thermal, chemical, electrical, light, radiant, sound, and nuclear.
The weight of an object is measured by an equal arm balance. True False
Answer:
True
Explanation:
The weight of an object is measured by an equal arm balance. The mass of an object is measured by a scale. The mass of an object changes with elevation. The weight of an object will change with elevation on the Earth.
Which of the following correctly describes the effect of endocrine disrupters on humans?
a.
They destroy normal human hormones.
b.
They destroy cells that hormones would normally target.
c.
They prevent hormones from binding to the cells they target.
d.
They destroy endocrine glands that would normally release necessary hormones.
Answer: b
Explanation:
Glutamine is an _____
so is phenylalanine.
Answer:
Amino Acid
Explanation:
Glutamine and Phenylalanine are both Amino Acids
This biome has cactus plants, less rainfall, and more sand. A) savannah B) desert c) tundra
Answer:
Desert
Explanation:
Savannahs don't have cacti, and tundras tend to be snowy, cold places.
Answer the question
how much higher might sea level rise by 2100
Which of the following best describes the connection between cardiovascular disease and age?
3. Asexual reproduction slows evolution...explain it.
When asexual organisms evolve, they typically do so very quickly after a sudden mutation and do not require multiple generations to accumulate adaptations as do sexually reproducing populations.
Which pollutant reduces the ability of the circulatory system to transport oxygen?
A)
particulate matter
B)
nitrogen oxide
C)
carbon monoxide
D)
sulfur dioxide
Answer:
C carbon monoxide
Explanation:
it combines with haemoglobin more faster than CO2 and O2 hence reduces O2 level in blood
if the southern latitudes get more sun exposure for longer hours per day than Northern latitudes predict the effects on the animals living in the two locations
Answer:
Date and latitude interact to determine photoperiod, the daily period of daylight. This interaction has important implications for latitudinal migrants for whom daylight may be a resource or for whom photoperiod regulates annual transitions in life‐history stages (i.e. birds).
Using an established formula, we developed user‐interactive, animated models that enable the visualization of how latitude and date determine photoperiod for latitudinal migrants. We also calculated the photoperiodic schedules for a broad range of hypothetical migratory programmes and real migratory programmes newly available through the proliferation of citizen‐science data. This enabled us to infer the limitations some migratory programmes place on mechanisms for photoperiodic regulation of annual breeding.
In the vast majority of cases, the act of migrating elevates annual daylight exposure. This raises the hypothesis that daylight availability selects for latitudinal migration, potentially contributing to its evolution in animals such as diurnal birds with limited time during the spring and summer to feed young. However, photoperiodic mechanisms regulating annual cycles could constrain the evolution of such migrations, depending on how they affect photoperiodic schedules. Most migratory programmes are consistent with known mechanisms of avian photoperiodism, but the range of feasible mechanisms declines for transequatorial migrants, which experience semi‐annual, 180°‐phase‐shifts in their photoperiodic cycles.
Understanding photoperiodic constraints on migration are particularly important in this age of changing latitudinal distributions and phenologies driven by climate change.
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Can some on please help me with this assignment
Hypothermia _____. results from excess sun exposure causes a high, infectious fever results from high body temperature results from low body temperature
Answer: it comes from the results from low body temperature
Explanation: