Answer:
D. structures that have lost all or most of their function over evolutionary time
Explanation:
the question states that the leg bones are almost entirely unused because of evolution
The study of change over a period of time is called evolution.
The correct answer of the following is D.
The change in the species over the period of time is called evolution. It is necessary to adapt itself in order to survive in nature.
According to the lamark, it is said that the organs which are no longer used in the body will become vestigial and will be removed from the body over a period of time.
According to the question, the small bones in the whale is might have functioned in the ancestor period but not in the current time due to the course of the evolution.
Hence, the correct answer is D that structures that have lost all or most of their function over evolutionary time.
For more information, refer to the link:-
https://brainly.com/question/14698383
1.what is considered as the building block of nature? ____________
2.are all cells multicellular? support your answer.___________
3.give an example of unicellular organism._____________
4.differentiate a unicellular organism from a multicellular organism._________________
5.can there be tissues,organs and systems without cells? support your answer._____________
CO2 + H2O à H2O3
Is the above chemical equation balanced? Why or why not?
Which of the following statement is not true?
a. Exposure to electromagnetic fields is known to cause leukemia.
b. Excessive exposure to asbestos can lead to asbestosis.
c.Excessive exposure to radiations can cause health problems including cancer. d. Any sound above 80 dB is potentially dangerous.
What does the prefix trop mean?
Answer:
To turn/ react
Explanation:
A tall pea plant with red flowers has the genotype TtRr. This plant is crossed with another tall pea plant with white flowers, having the genotype Ttrr. What is the probability of getting dwarf plants with red flowers in the F1 progeny
Answer:
1/8 or 12.5%
Explanation:
This question involves two genes coding for height and flower color in pea plant. The alleles for tallness (T) and red flowers (R) are dominant over the alleles of short (t) and white flowers (r).
According to this question, a tall pea plant with red flowers (TtRr) is crossed with another tall pea plant with white flowers (Ttrr). The following gametes is produced by each parent:
TtRr - TR, Tr, tR and tr
Ttrr - Tr, Tr, tr and TR
Using these gametes in a punnet square (see attached image), the following proportion of F1 offsprings will be produced as follows:
Tall, Red (T_R_) = 6
Tall, white (T_rr) = 6
Dwarf, red (ttR_) = 2
Dwarf, white (ttrr) = 2
The probability of getting dwarf plants with red flowers in the F1 progeny is 1/8 or 12.5%.
Answer:
12.5
Explanation:
got it correct on test
Does the sodium-potassium pump move?
Answer:
The pumping method of sodium-potassium pushes sodium and potassium ions against elevated concentration levels. It transfers two potassium ions into the cell where the levels of potassium are high, and pumps three sodium ions into the extracellular fluid and out of the cell.
Explanation:
ATP's hydrolysis is an active transport mechanism by the passage of sodium and potassium ions across the cell membrane to provide the required energy.
what organisms is unicellular? answered already!!!!
Answer:
hope you got the answer
Explanation:
In what part of the cell does fermentation occur?
Answer:
cytoplasm
Explanation:
As with glycolysis, fermentation takes place in the cytoplasm of the cell. There are two different forms of fermentation—lactic acid fermentation and alcoholic fermentation.
When cells want to store up energy will they add or delete a phosphate group
Answer:
they will add.
Explanation:
When a cell has energy available it can store small amounts of energy by adding a phosphate group to ADP molecules producing ATP molecules. The energy stored in ATP is released when ATP is converted to ADP and a phosphate group.
Based on the arrows, what does the image represent? Air masses are barely moving. Air masses are colliding with each other. Jet streams are forming in the upper atmosphere. Weather conditions are remaining steady and unchanged.
Answer:
2-Air masses are colliding with each other.
Explanation:
have a great day <3
From the image given below its clear that the warm is rising upwards and as a result of the collision from the cold winds or front from below, hence the development of clouds that make the thunderstorms appear.And a result of this turbulent the rising air is pushed and the warm front cycle takes a turn and will lead to either development of cyclone or rainfall.Can someone please help with this and explain! I will mark brainliest!!!
Answer:
D Flow of protons across an electrochemical gradient
Explanation:
The chloroplast adenosine triphosphate (ATP) synthase uses the electrochemical proton gradient generated by photosynthesis to produce ATP, the energy currency of all cells. Protons conducted through the membrane-embedded Fo motor drive ATP synthesis in the F1 head by rotary catalysis.
In chloroplasts, photosynthetic electron transport generates a proton gradient across the thylakoid membrane which then drives ATP synthesis via ATP synthase.
The light-induced electron transfer in photosynthesis drives protons into the thylakoid lumen. The excess protons flow out of the lumen through ATP synthase to generate ATP in the stroma.
Majority of ATP is produced by OXIDATION PHOSPHORYLATION. The generation of ATP by oxidation phosphorylation differs from the way ATP is produced during glycolysis.
Electrons are passed from one member of the transport chain to another in a series of redox reactions. Energy released in these reactions is captured as a proton gradient, which is then used to make ATP in a process called chemiosmosis.
D.Flow of protons across an electrochemical gradient
is the correct answer
Which will most likely result from a low-pressure weather system?
B. warm temperatures
D. cloudy conditions
A. clear conditions
C. cool temperatures
Dropdown
Choose the option that best matches the description given.
Selena was racing her quarter-horse against Jolene, who was also her rival for Sean's affections. Jolene was starting to overtake Selena. Trying to slow down the competition, Selena waved her riding crop in the air, intending to just tap Jolene on the shoulder. Instead, the strap lashed across Jolene's face, causing a huge welt.
battery
intentional infliction
assault
Describe the relationship between a tree and a cow. (Use terms like oxygen, carbon dioxide, photosynthesis, and cellular respiration)
Answer:
Without the tree the cow couldn't live.
Explanation
The cow breathes in oxygen and breathes out carbon dioxide. The tree uses cellular respiration and photosynthesis in order to take carbon dioxide (which the cow produces) and make it into oxygen (which the cow needs to breaths).
Should I add more detail to describe the trend?
do heterotrophs perform photosynthesis
Answer:
I think the answer would be No my bad of I'm wrong
Why do you think having many different species is important to humans?
Please write a creative answer! ;v;
Answer:
.
Explanation:
Biodiversity is important to humans for many reasons. ... Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services
What colour does the iodine go when placed on a leaf that does not contain starch
Answer:
It goes blue/black if starch isn't present.
Explanation:
A difference between DNA and RNA is that:
1.DNA has different bases than RNA
2.DNA is in the nucleus and RNA is never in the nucleus
3.DNA is a single strand and RNA is a double strand
4. DNA makes the proteins and RNA is the instructions
Experiments can be carried out only in a science lab.
TRUE OR FALSE.
Answer:
False
Explanation:
i hope i am right
Please I need help with my homework I have to turn it in tomorrow morning
Answer:
Some factors that may cause a decrease in population size:
- a high mortality rate due to an infectious disease
- a low birth rate
- a high mortality rate due to interspecific competence
- a high emigration rate
Explanation:
In biology, population size (N) refers to the total number of individuals in a given population. The four main factors that affect population size are birthrate (natality), death rate, immigration rate (i.e., the number of individuals of a given species that move into a population), and emigration rate (i.e., the number of individuals of a given species that move out of a population). Both birthrate and immigration are known to increase N, while death rate and emigration are rates known to decrease this value.
have you ever heard that a potato is a starchy vegetable? starch is a carbohydrate like the sugars, glucose, sucrose and lactose. how did this plant form the starch that is in the potatoes?
Answer:
co2
Explanation:
The data table shows the percentage of amino acid
similarities found in a protein for several organisms
when compared to the same protein in rabbits.
Based on the data,which organism is most closely related to the rabbit?
a.hamster
b.pig
c.dog
d.cat
Based on the data, the organism that is most closely related to the rabbit is: b. Pig.
Which organism has the most similarity?According to the diagram, the organism that has the most closely related similarity to the rabbit is the pig. The pig bears 95.4% of amino acid similarity to the Rabbit. This is almost 100 percent similarity, so we can say that this animal bears the most resemblance to a rabbit.
Amino acids are base materials that are necessary for the formation of nucleotides and genetic materials so the similarity goes down to genetics.
Learn more about amino acids here:
https://brainly.com/question/14351754
#SPJ1
please answer!! ASAP
1. What is biodiversity?
a) The animals that live only in rain forests.
b) The rich variety of live organisms in every
ecosystem on Earth.
c) The animals and plants species that live
only in your backyard.
2. Why do we need biodiversity?
a) it provides us with the food we need to eat
b)it provides us with virtually all the things we need to stay alive
c)so we have plenty of trees to use for fuels and materials
3.which of the following places has the highest biodiversity?
a)madagascar &indian ocean islands
b)tropical andes
c)caribbean islands
4. how many biodiversity ‘hotspots’ are there in the world?
a)12
b)25
c)34
5. in these ‘hotspots’ how much of the worlds species are found there?
a)10%
b)25%
c)50%
6. what does ‘endemic’ mean?
a) when a lot of people fall ill
b) when something is only found in one place
c) when a disease spreads throughout the world
7. why is biodiversity under threat?
a) habitat destruction
b)introduction of exotic species
c) both of the above and more
8. what can you do to help save biodiversity?
a) reduce, reuse, recycle
b) plant trees, clean local rivers and parks and protect habitats
c) all of the above
1.B
2.B
3.A
4.36
5.B
6.C
7.C
8.C
thanks me
Which atom is involved in giving your heart energy to beat?
carbon
O gold
o oxygen
Tron
Answer:
hello
Explanation:
your answer of this question is oxygen
Answer:
OXYGEN!!
Explanation:
Oxygen is involved in giving your heart energy to beat.
In the deep ocean layer, the temperature and salinity of the water is
options to anwser
the same
continues to decrease rapidly
Answer:
Option 2:- continues to decrease rapidly
Cystic Fibrosis is an autosomal recessive disease. A carrier male is married to a carrier female. What is the chance they will have a child with cystic fibrosis?
0 percent
25 percent
50 percent
75 percent
100 percent
Answer:
25 percent
Explanation:
25 percent 25 percent
what type of selection causes a shift in advantageous traits
Answer:
Natural Selection
Explanation:
In population genetics, directional selection, or positive selection is a mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.
why might it be important to know a person's lung capacity?
Answer:
Explanation:
I would talk about how lung can help dictate someones physical condition, and the shape that their lungs are in. (dictate VO2 max, etc.) it can also tell yo u whether someone is severely out of shape, a smoker, in very good shape, a runner, etc.
examples.
Protein
a. Long term energy storage and
heat insulation (keep warm)
Carbohydrate
b. Make up the cell wall (Cellulose)
and short term energy
Lipid
c. Store genetic information
DNA
d. Speed up the rate of chemical
reactions with enzymes
NOTES Definitions:
Answer:
cellulose is the answer
Explanation:
carryonleanring