Answer:
All human beings are 99.9 percent identical in their genetic makeup. Differences in the remaining 0.1 percent hold important clues about the causes of diseases
Explanation:
What is the major cause of air pollution?
Answer: Air pollution occurs when harmful or excessive quantities of substances including gases, particulates, and biological molecules are introduced into Earth's atmosphere.
Explanation: Hope this helps!!!
Which rate of harvest is twice the sustainable rate?
Reflection Question: Explain the relationship between photosynthesis and cellular respiration. Be sure to
include the main purpose of both and where they occur inside the cell.
Name the granular bodies found in the cell body
of the neuron
Answer:
Nissl's Granules found on the cytoplasm.
11.Explain why the newly created bacteria are considered genetically modified
Answer: Genetically modified bacteria are used to produce large amounts of proteins for industrial use. Generally the bacteria are grown to a large volume before the gene encoding the protein is activated. The bacteria are then harvested and the desired protein purified from them.
Explanation:
under what conditions can carrying capacity for a population reach equilibrium
Answer:When food, water, and space used by a population stay stable over time.
Explanation:
Many research studies have shown that different species may possess some of the exact same genes but show vastly different traits. How can that happen?
Answer:
Mutation can occur or the order in which these genes appear are in different order. Genetic variation can also occur.
HELP!!
Question 1 (2 points)
What is the phenotypic ratio of the F2 generation?
Answer:
9:7
Explanation:
We get the dominant phenotype in plants that have at least one dominant allele of EACH of the two genes; otherwise we get the recessive phenotype. So, the observed ratio in the F2 generation is 9:7.
So, this is your answer.
How might a wide variety of plants affect an ecosystem's sustainability?
A. The more types of plants there are, the more nutrients will be in the soil, increasing the ecosystem's likelihood of survival.
B. If disease strikes, only some types of plants will be affected, increasing the ecosystem's likelihood of survival.
C. The more types of plants there are, the more competition for resources will take place, decreasing the ecosystem's likelihood of survival.
D. If disease strikes, the plants will all be affected and likely die, decreasing the ecosystem's likelihood of survival.
Someone please help!! WIll give Brainliest!!! 30 points!!!
List the order of vessels the blood travels after it leaves the heart to the point that it is returning to the heart.
Answer:
Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. Blood leaves the heart through the aortic valve, into the aorta and to the body. This pattern is repeated, causing blood to flow continuously to the heart, lungs and body.
Explanation:
How do biotic and abiotic factors affect the characteristics of an ecosystem
Explanation:
Biotic factors such as the presence of autotrophs or self-nourishing organisms such as plants, and the diversity of consumers also affect an entire ecosystem. Abiotic factors affect the ability of organisms to survive and reproduce. Abiotic limiting factors restrict the growth of populations.
Plant cells use CO2 and H2O to make
A. chlorophyll
B. new cells
C. glucose
D. an ovule
Answer:
c.
Explanation:
Plants use CO2 and H2O to make glucose through photosynthesis
The removal of the predator populations from an ecosystem would most likely result in?
O a decrease in all the prey populations
O an increase in all the producer populations
O an increase in ecosystem biodiversity
O a decrease in ecosystem biodiversity
Answer:
A decrease in all the prey populations.
Answer:
a decrease in all the prey populations
Explanation:
I Watched a video thing
2. The genetic material of a virus can either be_____ or ______
Answer:
RNA or DNA
Explanation:
Answer: RNA or DNA
Explanation:
Plants are organized into cells, tissues, organs and organ systems just like animals.
A. True
B. False
Answer:
A. True
Explanation:
Hope it helps you in your learning process
What does coal do to the environment
Answer:
the burning of fossil fuels releases greenhouse gases into the atmosphere, increasing levels of CO2 and other gasses, trapping heat, and contributing to global climate change. Coal combustion releases the greenhouse gases carbon dioxide (CO2) and nitrous oxide (N2O) during combustion.Explanation:
Answer: Burning fuel releases CO2 into the atmosphere these gasses are called greenhouse gasses. When enough of these gasses accumulate in the sky the earth's natural temperature increases.
Which of the following is the best representation of the limiting factors affecting the elk population in this ecosystem?
O Number of scavengers, number of wolves, number of scientists studying Yellowstone.
Number of scavengers, and harshness of winter
Number of wolves, and harshness of winter.
The elk have no limiting factors
Answer:
Number of wolves, and harshness of winter.
Explanation: I took the test
The combination of factors that is capable of limiting the population of elk in an ecosystem would be the number of wolves and the harshness of winter.
The limiting factors of a population are those factors that hinder the population of an organism from increasing unlimitedly. In other words, limiting factors hinder populations from reaching their biotic potentials.
Limiting factors can be density-dependent if they have correlations with the density of species or density-independent if they have no correlation with an organism's density.
Wolves generally prey on elks, so they limit the growth of elk's population in an ecosystem. A harsh winter will also limit the overall growth of the population of elk in an ecosystem.
Scavengers cannot be a limiting factor to elk's population because they only feed on carcasses.
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Pls help with this question (I will mark brainliest)
Answer:
B. Mental, Protien
Explanation:
I so sorry if I'm wrong
Which of the following is the best example of a point source of water
pollution?
a. Storm water
b. Agricultural Runoff
c. Factory effluent
d. Residential posticide runoff
The BEST example of a point source of water pollution is factory effluent (Option c).
Water pollution refers to the contamination of water with pollutants. These substances (i.e., pollutants) convert water unusable to carry out different activities (e.g., drinking, cleaning, etc).
Water pollutants include, among others, herbicides, food processing waste, volatile compounds, heavy metals, organic pollutant microorganisms (e.g. bacteria, parasites), etc.
Factory effluents are well known to be harmful water pollutants for aquatic ecosystems.
In conclusion, the BEST example of a point source of water pollution is factory effluent (Option c).
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which of the following is NOT a natural resource?
gold
water
oil
fire
Answer:
fire is your answer i hope this helps
Which refers to the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound?
Which letter in the image shows the alluvial fan
Answer:
its z
Explanation:
i got it right
The leg muscles of a sprinter would differ from a marathon runner in that ________. The leg muscles of a sprinter would differ from a marathon runner in that ________. per gram, the sprinter's muscles would have more mitochondria than the marathon runner's muscles the marathon runner's muscles would have a greater rate of contraction than the sprinter's muscles per gram, the marathon runner's muscles would contain more myoglobin than the sprinter's muscles per gram, the sprinter's muscles would use more oxygen than the marathon runner's muscles
Answer:
The correct answer is - per gram, the marathon runner's muscles would contain more myoglobin than the sprinter's muscles.
Explanation:
Marathon runners have smaller leg muscles and thinner quads and calves as marathon runners require slow-twitch muscles while in sprinters the fast-twitch muscle requires. Slow-twitch muscles of marathon runners have more amount of myoglobin, per gram than fast-twitch muscles.
Myoglobin acts as local oxygen storage that provides oxygen to the muscles in case of less oxygen supply than required temporarily and a marathon race is an intense exercise or activity that requires more oxygen.
Think back to Biology class. Using the phenotypes and genotypes above, create a Punnett
square that shows the possible offspring from a blood type "O" parent and a blood type
"AB" parent.
What are the probable ratios of the phenotypes and genotypes of the kids?
Answer: 50% Ao, 50% Bo
(ii)
Which process transfers energy from organisms at one stage in a food chain
to organisms at the next?
Tick the correct box.
reproduction
feeding
movement
photosynthesis
1 mark
Answer:
feeding
Explanation:
when an organism eats another, it gets energy from it. That energy is passed along the food chain
The process by which energy is transferred from organisms at one stage in a food chain to organisms at the next is by feeding, which is present in the second option, as through the eating process and the predator-prey relationship, energies pass.
What is the significance of the food chain and the energy transfer?The food chain in nature is made up of many trophic levels, where one trophic level animal preys on other animals or plants and obtains food from them, so when the animal is eaten by other animals, the energy content passes from one to another, and the energy content from plants continues to decrease to the topmost trophic levels.
Hence, the process by which energy is transferred from organisms at one stage in a food chain to organisms at the next is by feeding, which is present in the second option, as through the eating process and the predator-prey relationship, energies pass.
Learn more about the food chain and energy here.
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(Will give brainly, 50 total points!)
1.Why does menstruation begin?
2.How long does the menstrual cycle usually last?
3.How do you know when the first day of the menstrual cycle is? What happens?
4.What is the function of FSH?
5.What are the small sacs in an ovary that contain a developing egg cell?
6.When does a woman run out of eggs? (No longer able to conceive) What is this point 7.in a woman's life called?
8.What is the name of the lining of the uterus?
9.What does estrogen do to the lining of the uterus?
10.What hormone is released due to the rising level of estrogen in the bloodstream?
11.What is the process by which the egg is released called?
12.When does ovulation occur? (At what point in the cycle?)
13.What is the maximum life of a sperm?
14.What hormone prevents the release of another egg?
15.What happens to hormone levels if a woman becomes pregnant?
16.Why does menstruation begin?
17.How long does the menstrual cycle usually last?
18.How do you know when the first day of the menstrual cycle is? What happens?
19.What is the function of FSH?
20.What are the small sacs in an ovary that contain a developing egg cell?
21.When does a woman run out of eggs? (No longer able to conceive) What is this point in a woman's life called?
22.What is the name of the lining of the uterus?
23.What does estrogen do to the lining of the uterus?
24.What hormone is released due to the rising level of estrogen in the bloodstream?
25.What is the process by which the egg is released called?
26.When does ovulation occur? (At what point in the cycle?)
27.What is the maximum life of a sperm?
28What hormone prevents the release of another egg?
29.What happens to hormone levels if a woman becomes pregnant?
Answer:
1.) Why does menstruation begin?
A.) Period happens because of changes in hormones in the body.
2.) How long does the menstrual cycle usually last?
A.) the menstrual cycle lasts 21 to 35 days while bleeding between 2 to 7 days
3.) How do you know when the first day of the menstrual cycle is? What happens?
A.) first day of menstrual bleeding is considered Day 1 of the cycle.
4.) What is the function of FSH?
A.) FSH helps control the menstrual cycle and stimulates the growth of eggs in the ovaries.
5.) What are the small sacs in an ovary that contain a developing egg cell?
A.) Follicle
6.) When does a woman run out of eggs?
A.) your ovaries cease to make estrogen, and you will go through the menopause. At the age of 45 to 50
7.) In a woman's life called?
A.) Middle adulthood is considered that period of time between ages 40 and 59
8.) What is the name of the lining of the uterus?
A.) Endometrium
9.) What does estrogen do to the lining of the uterus?
A.) Estrogen causes further proliferation of the stromal cells of the epithelial lining of the uterus.
10.) What hormone is released due to the rising level of estrogen in the bloodstream?
A.) When the level of estrogen is sufficiently high, it produces a sudden release of LH, usually around day thirteen of the cycle.
11.) What is the process by which the egg is released called?
A.) Ovulation
12.) When does ovulation occur?
A.) Ovulation typically occurs about 14 days before the start of the next menstrual period.
13.) What is the maximum life of a sperm?
A.) 5 days.
14.) What hormone prevents the release of another egg?
A.) Luteinizing hormone (LH),
15.) What happens to hormone levels if a woman becomes pregnant?
A.) Estrogen and progesterone are the chief pregnancy hormones.
16.) Why does menstruation begin?
A.) Period happens because of changes in hormones in the body.
17.) How long does the menstrual cycle usually last?
A.) the menstrual cycle lasts 21 to 35 days while bleeding between 2 to 7 days
18.) How do you know when the first day of the menstrual cycle is? What happens?
A.) first day of menstrual bleeding is considered Day 1 of the cycle.
19.) What is the function of FSH?
A.) FSH helps control the menstrual cycle and stimulates the growth of eggs in the ovaries.
20.) What are the small sacs in an ovary that contain a developing egg cell?
A.) Follicle
21.) When does a woman run out of eggs?
A.) your ovaries cease to make estrogen, and you will go through the menopause. At the age of 45 to 50
22.) What is the name of the lining of the uterus?
A.) Endometrium
23.) What does estrogen do to the lining of the uterus?
A.) estrogen causes further proliferation of the stromal cells of the epithelial lining of the uterus.
24.) What hormone is released due to the rising level of estrogen in the bloodstream?
A.) When the level of estrogen is sufficiently high, it produces a sudden release of LH, usually around day thirteen of the cycle.
25.) What is the process by which the egg is released called?
A.) Ovulation
26.) When does ovulation occur?
A.) Ovulation typically occurs about 14 days before the start of the next menstrual period.
27.) What is the maximum life of a sperm?
A.) 5 days.
28.) What hormone prevents the release of another egg?
A.) Luteinizing hormone (LH),
29.) What happens to hormone levels if a woman becomes pregnant?
A.) Estrogen and progesterone are the chief pregnancy hormones.
-TheUnknownScientist
Explanation:
I understand but it's so low point.....
.
How does carbon move from the nonliving (abiotic) environment into the living (biotic) environment?
A.) fossil fuels take carbon dioxide out of the air
B.) plants take carbon dioxide from the air
C.) animals take carbon dioxide from the air
D.) carbon dioxide moves from the air into water
Plz help soon i'll mark brainliest
Answer:
b plants take carbon dioxide from the air
How did mammals survive the mass extinction?
A. By living underground
B. By having a less selective diet
C. Both of the above
Answer:
C. Both of the above.........
B) By having a less selective diet if I'm not wrong
The Texas blind salamander (Eurycea rathbunl) lives in the Edwards Aquifer region around San Marcos. Along with other species the salamander lives in total darkness in the underground crevices and caves of the aquifer region. The table lists some of the organisms that live in this environment and their food sources. Edwards Aquifer Cave Inhabitants Food Sources Texas blind salamander Blind shrimp Snails Amphipods Intestinal roundworm Blind shrimp, amphipods Protozoa, fungl, detritus Detritus Detritus. Texas blind salamander In an energy pyramid for these aquifer cave dwellers, which of the following would be placed at the bottom? A Snails C Protozoa B D Texas blind salamanders Blind shrimp
Answer:
The answer is Protozoa
Explanation:
Question 11 (1 point)
A cell containing 28 chromosomes undergoes mitosis and cell division. How many chromosomes will each of the resulting daughter cells
contain?
a
28
b
7
с
56
d
14
Answer:
D
Explanation:
after mitosis II the daughter cell will have half of the chromosomes the father cell has.
A cell containing 28 chromosomes undergoes mitosis and cell division, and then each daughter cell will contain 28 chromosomes too, as the mitosis is the equational division that is in option a.
What is the significance of mitosis?Mitosis is an essential process that plays a crucial role in the growth, repair, and other essential processes that occur in all living organisms, such as growth and repair by producing new cells to replace old or damaged ones, mitosis helps in development as it creates the vast number of cells needed to form the complex structures of the body and takes part in asexual reproduction.
Hence, a cell containing 28 chromosomes undergoes mitosis and cell division, and then each daughter cell will contain 28 chromosomes too, as the mitosis is the equational division that is in option a.
Learn more about the significance of mitosis here.
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