5 sources of food contamination
Answer:
Major contamination sources are water, air, dust, equipment, sewage, insects, rodents
Explanation:
Contamination of raw materials can also occur from the soil, sewage, live animals, external surface, and the internal organs of meat animals.
Suggest why having only very few leaves could be both an advantage and a disadvantage to a plant
Darwin specifically studied the
on the Galapogas islands.
A. Finches
B. Flowers
C. Turtles.
D. Insects
Answer:
Explanation:
A. finches
darwin specifically studied the finches
on the galapagos islands.
How did eukaryotic cells originate?
Answer:The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.
Explanation:
There are 46 chromosomes in a human skin cell. How many chromosomes in a human egg cell?
A. 92
B. 23
C. 46
Answer:
A maybe
Explanation:
Chloroplasts and mitochondria have something in common that supports the theory of endosymbiosis. What is it?
A) Mitochondria and chloroplasts are found in prokaryotes.
B) Mitochondria and Chloroplasts lack a nucleus.
C) Chloroplasts and Mitochondria are the same size as prokaryotes.
D) chloroplasts and mitochondria are similar in size.
Answer: A) Mitochondria and chloroplasts are found in prokaryotes.
Explanation:
Both mitochondria and chloroplasts contain their own DNA and ribosomes. The first endosymbiotic event occurred: The ancestral eukaryote consumed aerobic bacteria that evolved into mitochondria. In a second endosymbiotic event, the early eukaryote consumed photosynthetic bacteria that evolved into chloroplasts.
I need help with this one too!!!
Answer:
EE is dominant ee is recessive, the probability of the child having ee is 25 percent
1. John and Aubrey are trying to decide where to go for dinner. John says he wants Chinese. He
knows Aubrey doesn't really like Chinese but he is in the mood for it. Aubrey tells him she'd
rather have something else. John gets agitated and starts telling her she is just being selfish.
Aubrey backs down and agrees to eat Chinese just so he will stop yelling at her. John then kisses
her, smiles, and says, “I knew you loved me". This is an example of an abusive relationship.
O true
false
Answer:
true
Explanation:
Just because he told she's being selfish ext.. lol it's not normal
What activities damage our lungs
Smoke: As we all know, cigarettes include toxic substances that trigger inflammation and destroy the lungs’ structure.1.
Mold: If too much moisture is present, mold can grow and become damaging to your airways. 2.
Chemicals: Inhaling chemical-filled air with things like noxious gas, chlorine, cleaning supplies and more can lead to threatening lung diseases.3.
Dust: Lung tissues can collect dust and particles over time which ends up injuring the airways.4.
Pollution: Not only can breathing in air pollutants cause irritation in your airways, but it also could lead to long-term lung damage.5.
Answer:
smoking and doing drugs
Which is a nonrenewable resource? *
cotton
minerals
wool
air
PLEASE HELP!!!!!!!!!
HELP!!!! ASAP!!!
What is an important function of mitochondria?
A. converting energy from sunlight into chemical energy in ATP
B. converting chemical energy from ATP into chemical energy in glucose products
C. converting energy from sunlight into chemical energy in glucose products
D. converting chemical energy from glucose into chemical energy in ATP
My family has an orange and white female cat, which is uncommon. Please describe her possible inheritance. (You may need to research this!)
Answer:
That orange and white cat next door could be an American Bobtail, a Persian, a Munchkin or even a Maine Coon! Their orange color comes from a predominance of a pigment called pheomelanin. This is the same pigment that makes some humans “redheads”.
 please answer quick and correctly
The rest of teh choices for number 3 is blood and carbon dioxide and for 6 the choices are to transport gases to protect internal organs to control movement or to transport fats
Answer:
Yes, you are right for both.
In very dry environments, sand can pile into large dunes.
The wind causes ripples on the surface of the sand.
Fossilized ripples of windblown sand
What do fossilized dunes such as the one shown in the photo tell scientists
about the environment?
A. It was once cold and wet.
B. It used to be a glacier.
C. It used to be an ocean.
OD. It was once dry and windy.
Answer:
D
Explanation:
the picture has ripples and is dry and cracked, hence the envirmoment having to be dry and windy.
Answer:
It was one dry and windy.
Explanation:
Provide an example of a mutation that has a neutral effect on the organism.
___________ provide neither a beneficial nor harmful effect on ____________
Answer: EXAMPLE:Black bears can carry the mutated gene that produces the white bears.
Explanation:
1. Even after you eat a sweet dessert, the level of glucose in your blood stays relatively constant. This is an example of , the maintenance of relatively constant internal conditions despite fluctuations in the external environment. 2. The maintenance of internal water and solute concentrations within a narrow range is called . 3. The maintenance of internal temperature within a narrow range is called . 4. A(n) , such as a pigeon, is an organism that gains body heat primarily from its own metabolism. 5. A(n) , such as a salamander, is an organism that gains body heat primarily by absorbing it from the environment. 6. The disposal of nitrogen-containing wastes, as through urination, is called .
Answer:
1. Homeostasis.
2. Osmoregulation.
3. Thermoregulation.
4. Endotherm.
5. Ectotherm.
6. Excretion.
Explanation:
1. The level of glucose in a person's blood stays relatively constant even after he or she eats a sweet dessert. This is an example of homeostasis, which is the maintenance of relatively constant internal conditions despite fluctuations in the external environment. Homeostasis can be defined as a process through which a living organism maintains a steady or stable physical, internal and chemical environment that is ideal to enhance life and proper functionality.
2. The maintenance of internal water and solute concentrations within a narrow range is called: osmoregulation. Normovolemic describes the situation in which a living organism maintains a normal volume or amount of blood in the body.
3. The maintenance of internal temperature within a narrow range is called: thermoregulation. Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).
4. An endotherm, such as a pigeon, is an organism that gains body heat primarily from its own metabolism. It is also referred to as homotherm and it involves maintaining a constant body temperature.
5. An ectotherm, such as a salamander, is an organism that gains body heat primarily by absorbing it from the environment. Thus, an ectotherm have limited abilities with respect to regulating its body temperature.
6. The disposal of nitrogen-containing wastes, as through urination, is called: excretion. Glomerular capsule is also referred to as Bowman's capsule and it can be defined as a cuplike sac (structure) with a double wall, which makes up the tubular part of a nephron within the kidney of mammals. It is saddled with the responsibility of first filtering blood (ultrafiltration) under pressure to generate urine in the mammalian kidney.
What traits would help a predator be more “fit” to survive in each environment?
The environments it means are a white snowy place and a darker summer place. No links
A predator would likely be more fit if he could blend in with his surroundings, made minimal noise, had good hearing, and could move quickly.
What will make a predator fit in every environment?
Not simply color, but also possibly rough skin, sharp teeth, or claws to ward off predators, could have an impact on an individual's ability to survive.Microevolution (change in allele frequencies) can result via natural selection, with fitness-increasing alleles becoming more prevalent in the population.Reproductive success is measured by physical fitness (how many offspring an organism leaves in the next generation, relative to others in the group).It is the only method of evolution that may continuously lead to populations being more acclimated to, or better suited for, their environments, throughout time.Therefore, natural selection is the phenomenon for survival of the fittest.
Learn more about natural selection here:
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How is Uranus similar to Jupiter?
It has rings.
It has no moons.
It has a rocky surface.
It has methane in its atmosphere
.
Uranus and Jupiter both have rings, both have moons, but they are mostly gas planets, and both have some methane. I think id.k if that helped
Uranus is similar to Jupiter in that it has methane in its atmosphere. Therefore, the correct option is D.
What are Uranus and Jupiter?Both Jupiter and Uranus are planets in our solar system. Jupiter, the largest planet in our solar system, is located five planets from the Sun. Uranus, the third largest planet in our solar system, is located at a distance of seven planets from the Sun.
Both planets are gas giants, with atmospheres composed mostly of hydrogen and helium. Their upper atmospheres also include methane gas, which gives them a blue-green colour. However, there are many differences between Uranus and Jupiter. Although they are much less noticeable than Saturn's rings, Uranus has a system of rings and at least 27 moons. Compared to Jupiter, Uranus is smaller and has less mass.
Therefore, the correct option is D.
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1 pts
Question 36
Which of the following is a phenotype?
red hair
heterozygous
ODNA
0 Аа
Answer: Red hair
Explanation: Phenotypes are the physical characteristics or traits of an organism.
Identify the transformations of energy that take place in the diagram. Assume the girl in the diagram eats the corn to gain the energy to ride the bike.
Answer:
kinetic and solar energy
Explanation:
hope it helps
Answer: This is it!
Hope this helps
I need help in writing an essay about the rise of global temperatures over the past century
Answer:
Essay about the rise of global temperatures over the past century.
Explanation:
The rise of global temperatures over the past century is the major issue which occurs due to human activities. The use of fossil fuels in vehicles releases huge amount of carbondioxide gas in the air while burning. Carbondioxide gas is a green house gas which blocks the reflected solar radiation to go away in the space. These solar radiation remains in the surface which increases the surface temperature of the earth. This rising in the surface temperature is responsible for the melting of glaciers that leads to the rise of sea level which is a threat for coastal regions. This melting of glaciers also causes floods in the regions so that's why the it is a major issue.
Which type of reproduction is shown in the diagram above?
Answer: there’s no diagram…
Explanation:
What part of the excretory system transport urine from the kidneys to the bladder?
Answer:
Ureter
Explanation:
what are chromosomes? how are they different between eukaryotes and prokaryotes?
Answer: A chromosome is a long DNA molecule with part or all of the genetic material of an organism. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.
Explanation:
What’s the difference between a primary source and a secondary source?
A primary source was written by someone who actually experienced the event.
The difference is about where the source appears—online or in print.
Primary sources are shorter than secondary sources. The difference is about how closely the source relates to your topic.
PLEASE HELP ME!!!!!!!
Answer:
"A primary source was written by someone who actually experienced the event."
Answer:
"A primary source was written by someone who actually experienced the event."
Explanation:
How does carbon enter the food chain?
Answer:
Carbon is in almost everything. Carbon can come into the food chain from what animals eat and drink. Carbon can also come into plants from the soil absorbing dead animals.
COLUMN A
1. gametes
2. gonads
3. seminiferous tubules
4. puberty in males
5. testosterone
6. corpus luteum
7. puberty in females
8. atresia
9. human chorionic gonadotropin
10. oxytocin
COLUMN B
a. sperm production
b. endocrine structure
c. produces secondary sex characteristics
d. follicular degeneration
e, reproductive organs
f. indicates pregnancy
8. reproductive cells
h. milk ejection
i. menarche
j. spermatogenesis begins
Answer:
1g
2e
3j
4a
5c
6b
7i
8d
9f
10h
Explanation:
Clownfish and sea anenome: the clownfish is protected and has a home. The sea
anemone gets nothing in return. What type of relationship is this?
parasitism
commensalism
carry capacity
mutualism
Answer:
mutualism
Explanation:
What control mechanisms might prevent cells from producing too much of the amino acid glycine?