What do fossils provide evidence for?
A. the history of life in the geologic past
B. why species became extinct in the past
C. developmental patterns of living organisms
D. the genetic similarities between living and extinct organisms
Answer:
A
Explanation:
it provides insight to what animals existed in the past, ecosystems and adaptations of currently existing species
Different alleles produce different characteristics. True False
Answer:
Explanation:
Los alelos son formas alternas de un gen, que difieren en secuencia o función. Toda característica genéticamente determinada depende de la acción de cuando menos un par de genes homólogos, que se denominan alelos.
The function of the liver in humans is to maintain the [glucose] circulating in the blood stream at reasonably constant levels. This is so organs like the brain that use primarily glucose as their carbon source to produce energy via ATP have a steady supply of glucose. It also ensures that the levels of glucose in the blood stream do not get too high. Using the plots from problem 6, discuss why it makes sense that glucokinase in liver would behave differently than the hexokinase in other cells.
Answer:
Due to difference in function.
Explanation:
Glucokinase in liver behave differently than the hexokinase in other cells because glucokinase performs different function in the body. Glucokinase is an enzyme that is responsible for sensing the glucose level in the blood and also plays a key role in the storing of glucose as glycogen while on the other hand, this storing ability is absent in hexokinase so that's why the glucokinase in liver behave differently than the hexokinase in other cells.
all of the following about gastrin are true except
Answer: Gastrin is released into the lumen of the stomach.
plzz mark brainliest
Explanation:
Cnidaria have no brain, so they Cannot move .a O .Cannot chase their food.
b O Must be solitary
c O .Cannot swim d
O Cannot be predators
.e O :Insects that are primitive have a life cycle that differs from advanced insects in that The adults can only feed on solid food
.a O There is no pupal stage
.b O Its larvae feed on different foods from the adults
.c O They take much longer to become an adult
dO The adult cannot fly .
What does inflammation lead to allow white blood cells to find the
infection and the release of cytokines?
You've been experiencing acid indigestion lately, and you'd like a quick fix for the problem. You do a little research on the Internet and discover that your problem is caused by excess stomach acid. In the pharmacy aisles, however, you're having a little trouble deciding what to purchase to address the problem. At the pharmacy counter, the clerk recommends that you purchase PEPCID AC or Alka-Seltzer tablets. You want to design an experiment to compare the effectiveness of Pepcid AC tablets and Alka-Seltzer tablets. Which of the following facts would be least likely to complicate your experiment and the analysis of your results?
a. PEPCIO AC and Alka-Seitzer tablets contain different ingredients.
b. PEPCID AC and Alka Seltzer tablets contain different concentrations of the antacid drug.
c. The recommended dosage for PEPCID AC and Alka-Seltzer tablets is different.
d. PEPCIO AC and Alka-Seltzer tablets are sold in different countries throughout the world,
Answer:
d. PEPCIO AC and Alka-Seltzer tablets are sold in different countries throughout the world.
Explanation:
When there is excess acid in the stomach then Alka-Seltzer tablet can be used. The Ph level of these tablets is higher than 7 because acidic reaction need to be stopped with an introduction of base.
Why can yeast be considered to be a parasite?
A. Yeasts are helpful towards other organisms.
B. Yeasts are considered to be a food source by some organisms.
C. Yeast can only move by being carried by another organism.
D. Yeasts can harm other organisms.
Answer:
B
Explanation:
Study the image of a plate boundary. The Asthenosphere is being divided by the Lithosphere on the left of the diagram. Oceanic crust is above the Lithosphere and continues until it reaches the Continental crust on the right. The Lithosphere layer on the right is moving left toward the Lithosphere layer on the left that is moving right and down. Two volcanoes are above the area where the lithosphere layers meet. Which feature is forming? mountain rift valley earthquake island chain
Answer:
Sorry about the guy above me lolz, the answer is A :))
Explanation:
Have a great day !! muah
Answer:
It is island chain which on mine is D
Explanation:
Greg performed an experiment in which he measured the reaction rate of two different enzymes at varying pH is his real belts appear in the table below
Answer:
B. Enzymes have particular pH's at which they function best
Explanation:
The table in this question describes the reaction rate of two enzymes (enzyme 1 and 2) measured in mmol/min. According to the question, Greg performed an experiment in which he measured the reaction rate of two different enzymes at varying pH.
At pH 7-9, the reaction rate of enzyme 1 was more than that of enzyme 2 while from pH 9.5-11, the reverse was the case. This portrays that the reactivity of an enzyme is in response to the pH they are placed in. In other words, different enzymes have particular pH's at which they function best.
3. If muscle contraction were an athletic game, calcium would be the most valuable player. Describe,
using some depth, the roles calcium is serving both inside the muscle fiber and outside at the NMJ.
Answer:
Explanation:
At the NMJ, calcium is responsible for "unlocking" the ligand gated channels, allowing AcH to be released into the synaptic cleft. When AcH binds and the AP moves down the sarcolemma and into the t-tubule, calcium is then released from the sarcoplasmic reticulum into the sarcoplasm. It then binds to the calcium subunit of troponin, causing a confirmational change in tropomyosin, exposing the active sites on actin. This allows the myosin heads to bind, causing muscle contraction.
What type of conservation will result in the greatest reduction in the burning of fossil fuels?
Answer:
Conservation of air.
Explanation:
Conservation of air will result due to greatest decrease in the burning of fossil fuels because fossil fuels greatly damage the air. The burning of fossil fuels produces carbondioxide gas in large amount that can be released in the atmosphere. This increase in carbondioxide gas in the air causes pollution that leads to global warming as well as health problems in humans. So we can conclude that decrease the use of fossil fuel leads to conservation of air.
Usually the outermost planet of the solar system is Jupiter.
Please select the best answer from the choices provided
от
OF
Answer:
False
Explanation:
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
(Pluto)
the outermost planet is technically neptune but some still consider pluto a planet. but jupiter is not the outermost planet.
room temperature for phosphorus
Explanation:
0.5digre celcious is our temperature ️ know
What is the first thing to do after putting a weighing boat on the balance?
Answer:
plz follow me
Explanation:
yeititosspoypg9tt88y9y
What is the purpose of cellular respiration?
a
break down sugars to use their energy directly
b
capture energy from the sun and store it in sugars
c
break down sugars to create ATP
d
capture energy from the sun and store it in sugars
The adenine of the start codon is located at the +1 position. Use the DNA Mutations Interactive to determine which statements describe missense mutations. a substitution of G to U at position +13 in the sense strand a transition at position +12 in the antisense strand a transversion of C in the sense strand of the histidine codon a G nucleotide is inserted after position +1 in the antisense strand a deletion of the A at position +7 in the antisense strand an insertion of A between positions +7 and +8 on the sense s
Answer:
A transition at position +12 in the antisense strand
A deletion of the A at position +7 in the antisense strand
Explanation:
Given that Adenine of the start codon is located at the +1 position, The correct statements that describe missense mutations are
A transition at position +12 in the antisense strandA deletion of the A at position +7 in the antisense strandAdenine is a purine nucleobase that is used in the formation of nucleic acids
A series of Hfr strains that have genotype m+ n+ o+ p+ q+ r+ are mixed with an F− strain that has genotype m− n− o− p− q− r−. Conjugation is interrupted at regular intervals and the order of the appearance of genes from the Hfr strain is
determined in the recipient cells.
a. The order of gene transfer for each Hfr strain is:_________
b. What is the order of genes on the circular bacterial chromosome? For each Hfr strain, give the location and direction of the F factor in the chromosome
my brain can't process this lol
How many proton , neutrons , and electrons are there barium ?
Answer:
137.327 atomic mass units
hope this helps
Explanation:
Answer:
56 protons, 81 neutrons and 56 electrons
Explanation:
hope that helps
1.
Which has the greatest impact on the temperature of the Earth's atmosphere?
chemical runoff
sulfur dioxide
carbon dioxide
Ozone
Plants can reproduce both sexually and asexually. What are some examples of sexual reproduction in plants? Select ALL that apply. Responses
Sexual reproduction in plants involves the fusion of male and female gametes to produce offspring with genetic diversity.
Mechanisms that facilitate sexual reproduction in plants are examples:
1)Pollination and Fertilization: Many plants rely on pollinators, such as bees, butterflies, or birds, to transfer pollen from the male reproductive structures (anthers) to the female reproductive structures (stigma) of flowers.
This process enables the fusion of sperm cells within the pollen with egg cells in the ovules, leading to fertilization.
Examples include flowering plants like roses, sunflowers, and apple trees.
2)Seed Production: After fertilization, the ovule develops into a seed. Seeds contain an embryo, formed by the fertilized egg, enclosed within a protective seed coat.
The mature seeds can disperse and germinate to give rise to new plants.
Various plant groups, including angiosperms (flowering plants) and gymnosperms (conifers and cycads), reproduce sexually through seed production.
3)Alternation of Generations: In plants with a complex life cycle, such as ferns, mosses, and liverworts, sexual reproduction involves an alternation between two distinct generations: the gametophyte and the sporophyte.
The gametophyte generation produces gametes (sperm and eggs) through specialized structures, while the fusion of gametes gives rise to the sporophyte generation, which produces spores.
4)Self-fertilization: Some plants have the ability to self-fertilize, where the pollen from the anther of a flower is transferred to the stigma of the same flower or another flower on the same plant.
This allows for sexual reproduction without the need for external pollinators. Self-fertilization can be seen in plants like tomatoes, peas, and certain grass species.
For more questions on reproduction in plants
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Does anyone know how to do Punnet squares?
Use the Punnet square to answer the question
1. Write the phenotypes of the three genotypes shown above.
TT _______
tt _______
YT _______
Answer:
homzygous homzygous heterozygous
Explanation:
A gas has no definite:
a shape
b volume
c
weight
d both A and B
Answer:
a gas has no definite Shape and Volume
Explanation:
hope this helps! have an amazing day lovely!
What is the name of the gland located above each kidney?
o thyroid gland
O
pancreas
pituitary gland
o adrenal gland
Answer:
It's the thyroid
Explanation:
I took the test
How many amino acid differences would you expect to find between the hemoglobin of a human and a wolf?
Answer:
600! IF THIS ISN'T IT IM SO SORRY
Explanation:
which of the following is an example of a complementary base pair in DNA?
a. A-G
b. T-C
c. A-U
d. C-G
Answer: d. C-G
Explanation:
DNA or deoxyribonucleic acid is a structure which is common in every living organism. The two strands of the DNA are held together by base complementarity between the nitrogenous bases these bases are held by hydrogen bonding. Adenine always pairs with thymine by a triple hydrogen bonding and cytosine is always forms a pair with that of guanine by a double hydrogen bonding. So, in this given situation cytosine or C will show complementarity with that of guanine or G in a DNA structure helping in linking the two strands of DNA to form a single integrated double helical structure.
Answer: D.c-g
Explanation:
PLZ HELP ASAP Maria pushes a ball, and the ball rolls across the table. She wants to make the ball roll faster. Maria needs to push the ball A. with more strength. B. on a different table. C. on the other side of the table. D. with less strength.
hello people of brainly
Answer:
a scientist should observe the natural world without changing or destroying it
Which of the following is NOT a function of a cell membrane?
a. the cell membrane protects the cell
b. the cell membrane helps molecules move into or out of the cell
c. the cell membrane assists in the synthesis of proteins
d. the cell membrane has identifying marker molecules on it
Answer:
A. the cell membrane protects the cell
What might happen to the Earth if human increase the amount of greenhouse gasses?
Explain your answer.''
Answer:
Global warming will occur
Explanation:
Greenhouse gases are special gaseous compounds that have this ability to trap HEAT due to their structural composition. They include; carbon dioxide (CO2), chlorofluorocarbons (CFC), methane (CH4) etc.
Anthropogenic activities such as burning of fossil fuels etc. release these gases into the atmosphere where they cause harm to the Earth. Greenhouse gases contribute immensely to the GLOBAL WARMING EFFECT, which is the increase in the temperature of the Earth surface. Therefore, if humans increase the amount of greenhouse gases in the atmosphere via their actions, there will be a GLOBAL WARMING occurrence.