Answer:
A) birds have a large opening where the beak should be.
Explanation:
when scientists turn off the gene that makes beaks in birds, the birds have a mouth where no teeth are present. The birds have mouth because the bird resembles and closely related to the dinosaur. There are some proteins that is responsible for the occurrence of beak but when the genes are turn off these protein stop producing that leads to turn the beak place into mouth.
Which molecule results from the final step of the Calvin cycle
Answer:
RuBP
Explanation:
if im wrong sorry
3. What type of pesticide is used to kill plants?
herbicides
fungicides
insecticides
rodenticides
Answer:
herbicides
Explanation:
herbicide targets weeds and other unwanted plants
Answer:
I believe the answer is Herbicides.
Explanation:
Herbicides: Chemical used to kill unwanted plants
Fungicides: Generally used to control parasitic fungi that can cause economic damage to crops.
Insecticides: Help control insects in the home garden or landscape.
Rodenticides: Pesticides that kill rodents.
what color would a normally green leaf be under a light that only emitted red colored light
yellow, orange, green, blue
Explanation:
all of those are the awnsers and it depends also in how bright so depending on the brightness ( i put it in order ) ( mark as best awnser
I will give brain to correct answer!
When guard cells are full, they bulge. This increases the
size of the gap between them and opens the hole in the
leaf.
Which object is the best model of a guard cell?
A.) Straw
B.) Garden hose
C.) Water Balloon
D.) Strainer
The best model of a guard cell is Water Balloon. Thus, option "C" is the correct answer.
What is Transpiration?Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere.
Transpiration is essentially evaporation of water from plant leaves. Transpiration is important because water is needed for photosynthesis and because water cools a plant off.
Thus, option "C" is the correct answer.
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The study of evolutionary relationships that includes a branching pattern showing lineages diverging is called... *
Answer:
Phylogenetic tree
Explanation:
A phylogenetic tree is a tree that is responsible for showing the different relationships with respect to evolution between species that are considered to have a common offspring. The species of interest are shown at the tips of the branches of the tree in question. The branches are connecting with each other, representing the evolutionary history of the species, being the way in which we think that they evolved starting from a common ancestor through various divergence events (when two branches separate).
How do permeability and slope affect runoff?
Answer: For one thing, with the increase in slope, the soil infiltration rate will decrease, which can increase the runoff amount [15–17]. For the other, the effective rainfall obtained by the soil bin will decrease as the slope increases.
Explanation:
Answer:
Maintenance can be difficult, at best, and establishing plants, though very important for slope stability, often requires implementing costly and laborious solutions for erosion control. Every time it rains, the water that flows down a slope slowly removes soil and can cause gullies to form over time, removing valuable topsoil from the landscape.
PLEASE HELP 50 POINTS BRAINLIST
Answer:
c
Explanation:
Answer:
c is the answer if that your queston
Explanation:
c
Will give brainlest 100 points
Answer:
the answer is B gamma particle
Answer:B
..............................
A hawk eats small rodents such as mice and
chipmunks. It has no natural predators in the
ecosystem shown here. Which empty box in the
food web above represents a hawk?
A. B.
B. A
C. D
O D. C
B represents the hawk
Which statement most accurately describes a relationship between two
animals in the relationship diagram?
Select one:
A. The turtle and salamander have amniotic eggs.
B.The turtle and opossum have amniotic eggs.
C. The turtle and salamander are warm-blooded.
D. The turtle and opossum are warm-blooded.
What role does the Krebs cycle play in the cells
HELP PLEASEEEE
Twin Labrador Retriever puppies were born from a black mother and a golden father. One puppy was born black and the other was born golden. These two puppies have different traits because their DNA has___.
A. different amounts of deoxyribose sugars in their DNA molecules
B. different arrangements of nucleotides
C. different amounts of thymine nitrogen base
D. different numbers of proteins found within their cells
Answer:
l
Explanation:
Answer:
A
Explanation:
I'm pretty sure
The bacteria lactobacillus acidophilus are frequently used in the production of yogurt. there
Explanation:
The bacteria Lactobacillus acidophilus are frequently used in the production of yogurt. These bacteria use lactic acid fermentation when oxygen is not available.
What do you think would happen if producers did not exist ?
What is NOT a prevention method for the milkweed bug?
O Leave grass clippings on lawn
O Mow at least once a week
O Avoid over-fertilization
O Provide proper amounts of water
Describe the role of each of these white blood cells:
• T cells:
• B cells:
Answer:
B cells are at the centre of the adaptive humoral immune system and are responsible for mediating the production of antigen-specific immunoglobulin (Ig) directed against invasive pathogens (typically known as antibodies).
Explanation:
T cells are a part of the immune system that focuses on specific foreign particles. Rather than generically attack any antigens, T cells circulate until they encounter their specific antigen. As such, T cells play a critical part in immunity to foreign substances.
Answer:
T cells are responsible for cell-mediated immunity.
B cells are responsible for humoral immunity or antibody production
Explanation:
i got it right
what are the dominant freshwater flora and fauna?
a) grass and insects
b) mangrove trees and fish
c) plants and amphibians
d) sawgrass and reptiles
Answer:
The correct answer is A I believe :)
Explanation:
3) Earthquake S-waves do not travel through the Earth's
A) crust
B) moho
C) mantle
D) core
Answer:
Earthquake s waves do not travel through the Earth's core
Explain the various phase of menstrual cycle with reference to changes in ovary and uterus and hormonal cycle.
Answer:
In the follicular phase, the follicles grow inside the ovary. The ovulatory phase is the time of greatest fertility for women. In it, estrogen levels peak just before the egg is released. In the luteal phase, after ovulation the follicular structure that remains in the ovary reorganizes and becomes a gland known as the corpus luteum. The self-determined life of the corpus luteum causes it to degenerate after 14 days and end a menstrual cycle. At the end of the luteal phase, progesterone and estrogen levels drop and menstruation occurs.
Explanation:
The follicular phase is where follicles develop (fluid-filled cavities in the ovary that contain an undeveloped egg) that will eventually house the egg. For the development of follicles, the body sends a signal to the brain to start the production of follicle stimulating hormone (FSH), the follicles begin to develop and produce estrogen. In the ovulatory phase, the level of estrogen in the body continues to rise, causing a rapid rise in LH. This increase causes the secretion of proteolytic enzymes that will degrade the follicular tissue allowing the maturation process of the ovum and its release to finish, a fact known as "ovulation". Ovulation usually occurs between 24 and 36 hours after the LH surge, so luteinizing hormone is a good factor for measuring the period of maximum fertility and knowing the fertile days of the woman. In the luteal phase, the corpus luteum develops that will last until a possible pregnancy or menstruation occurs, starting the next cycle. The egg, after being released, travels through the fallopian tube to the womb. It can survive up to 24 hours and sperm up to 5 days inside the uterus, therefore the days before ovulation and the day of ovulation itself, which can be calculated with the ovulation calendar, are those of maximum fertility and higher chances of pregnancy. After ovulation, the follicle begins to contract but continues to produce progesterone and begins to produce estrogen in order to continue preparing the uterus to receive the embryo.
Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is a(n) Group of answer choices post-zygotic barrier to reproduction. sympatric barrier to reproduction. pre-zygotic barrier to reproduction. allopatric barrier to reproduction. good thing.
Answer:
The correct answer is ''post-zygotic barrier to reproduction''
Explanation:
Biological barriers prevent the exchange of genes between two or more populations, a postzygotic reproductive barrier reduces the survival or reproduction of hybrid offspring. In hybrid non-viability there is low survival of the hybrid, especially during embryonic stages. On the other hand, the sterility of the hybrid occurs when the fertilized egg develops into a healthy but sterile adult. Segregation of aneuploid gametes during meiosis, different gene associations occur on the chromosomes of the parents.
What happens during synapsis?
A. gene recombination
B. DNA replicates
C. the cell divides
D. centrioles move to the poles
Answer:
C
Explanation:
The Big Bang is the predominant theory explaining the moment that what began?
Scientific theory
Historical cataloguing
The universe
Greek mythology
Answer:
the universe
Explanation:
the big bang theory is thought to be the creation of the beginning of everything
1. Which kind of evidence did scientists use to determine that some animals moved back to a marine life after first evolving as land mammals?
a. The fossil record
b. Comparison of homologous structures
c. DNA evidence
d. All of the above
Answer:
Instead of gathering evidence from a single field, the pair pulled together research from many disciplines, including paleontology, molecular biology and conservation ecology, to give a far larger picture of what was happening when animals transitioned from the land to the sea across millennia.
Explanation:
it's probably D. all of the above because scientists use all of these examples
but im not 100% sure
Tell me where I should put the boxes in the correct description
Answer:
1st graph/diagram --> 2nd description (between top and bottom)
2nd graph/diagram --> 3rd description (bottom/last one)
3rd graph/diagram --> 1st description (top one)
The layer is above stratosphere and below thermosphere, this is where meteors and rock fragments burn up and is
the coldest layer of the atmosphere. This is
A) troposphere
B) stratosphere
C) mesosphere
D) thermosphere
Fossils of animals the size of goats were dated at 5 million years old. Similarly, fossils of larger animals were dated at 3 million years old. Both animals were similar in body structure to today's horses. Using these data, which inference can scientists make?Immersive Reader
The animals were probably ancestors of today's horses.
The animals had no relationship to one another.
Today's horses and these animals probably lived together at some time in the past.
Today's horses are faster than these animals were.
Answer:
THE ANSWER IS: A it makes the most sence.
Explanation:
The animals were probably ancestors of today's horses. Thus option A is correct.
What are fossils?Fossils are the preserved remains, traces, or traces of living things from a bygone geological epoch. Bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants are some examples of the fossils.
Paleontology is the study of fossils, their ages, how they formed, and their evolutionary importance. Specimens older than 10,000 years are usually considered fossils. The oldest fossils are about 3.48 to 4.1 billion years old.
There are many processes that lead to fossilization, including permineralization, casting and molding, true mineralization, displacement and recrystallization, impression, carbonization, and bioimulation.
Therefore, if both fossils have similar structure then the animals were probably ancestors of today's horses.
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Suggest why having only very few leaves could be both an advantage and a disadvantage to a plant
PLS ANSWER, How do the organ systems function together in the human body?
Answer:
it doesn't say the options so I'm what to pick from sorry
Help please someone please what is the answer
Why are only four amino acids produced by 5 codons? I need this answer ASAP
Answer:
My answer (that the information we have about codon structure is limited to the observations we can make now) is similar to the first part of your answer: that the number of amino acids that can be encoded is a function of codon length, in that both imply the (circular) argument that we must need more than 14 amino acids (plus a start and a stop, making 16) because we observe three nucleotide codons rather than two nucleotide codons. It would be nice to have a noncircular argumentf for why the minimum number of distinct amino acids is more than 14, but that is beyond my ability to construct
A, T, C, and G are the only letters found in DNA, however, a protein may include up to 20 distinct amino acids. Codons assist in translating the DNA code into a protein code at this point.
What are genetic codons?For the body to develop and work effectively, 20 different amino acids are required. All 20 of them are crucial for your health, but only 9 are considered to be absolutely necessary.
This is due to the degeneracy of genetic codes, one of their characteristics, the remaining 3 codons are called "stop" codons since they do not code for any amino acids. The sequences UAA, UAG, and UGA include the stop codon information.
Therefore, only 61 of the 64 possible codon combinations code for amino acids.
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