Answer:
Weak hydrogen bonds
Explanation: Hydrogen bonds between the bases hold the two strands together.
Which of the following identifies types of plants in which pollination occurs?
Explanation:
For fertilization to occur in angiosperms, pollen has to be transferred to the stigma of a flower: a process known as pollination. Gymnosperm pollination involves the transfer of pollen from a male cone to a female cone.
Answer: The correct answer is flowering plants
Explanation: This answer has been confirmed correct.
Flowering plants reproduce through pollination.
Use the following information to answer the questions below. Skin color in a certain species of fish is inherited via a single gene with four different alleles. One fish of this type has alleles 1 and 3 (S1S3) and its mate has alleles 2 and 4 (S2S4). If each allele confers a unit of color darkness such that S1 has one unit, S2 has two units, and so on, then what proportion of their offspring would be expected to have five units of color
Answer:
1/2 = 50% of the progeny is expected to have 5 units of color → S1S4 + S2S3
Explanation:
Available data:
Single gene with four different alleles → S1, S2, S3, S4Each allele confers a unit of color darknessS1 one unitS2 two unitsS3 three unitsS4 four unitsCross:
Parentals) S1S3 x S2S4
Gametes) S1 S3 S2 S4
F1) 1/4 = 25% of the progeny is expected to be S1S2 → 3 units
1/4 = 25% of the progeny is expected to be S1S4 → 5 units
1/4 = 25% of the progeny is expected to be S2S3 → 5 units
1/4 = 25% of the progeny is expected to be S3S4 → 7 units
1/2 = 50% of the progeny is expected to have 5 units of color → 1/4 = 25% S1S4 + 1/4 = 25% S2S3
Who was Louis Pasteur?
Answer:
Louis Pasteur was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization.
mark me brainliestt :))))
¿Cuáles de las siguientes características permite el intercambio gaseoso entre el Oxígeno (O2) y Dióxido de carbono (CO2) en los alveolos?
Answer:
Difusión y afinidad de la hemoglobina.
Explicación:
La difusión y afinidad de la hemoglobina son las características que permiten el intercambio gaseoso entre el Oxígeno (O2) y el Dióxido de Carbono (CO2) en los alvéolos. Debido a la difusión, las células de hemoglobina descargan o eliminan el gas de dióxido de carbono que es más alto en la hemoglobina en comparación con los alvéolos, por lo que el dióxido de carbono se mueve de la hemoglobina a los alvéolos mientras que, por otro lado, el oxígeno se mueve dentro de la célula de hemoglobina a través de la difusión y la estructura de la hemoglobina atraer y adherir moléculas de oxígeno consigo mismo.
Consider the 4 foods in order of the percent by mass of proteins, from lowest to highest. From food to food, as the percent by mass of proteins increased, the mass of food remaining at 28 hr: 1 point A. increased only. B. decreased only. C. increased and then decreased. D. decreased and then increased.
Answer:
B. decreased only
Explanation:
If you look at the table 1 and order the foods by the percent of protein, and after you take a look at the graph, you'll see that the bigger the percentage of protein, less food remains.
21. In 1960, an invasive species of fish was introduced into the stable ecosystem of a river.
Since then, the population of a native fish species has declined. This situation is an example of
an
1) Ecosystem that has recovered
2) Ecosystem altered through the activities of humans.
3) Environmental impact caused by physical factors
4) Ecological niche without competition
The main adaptation that plants had to develop to live on land instead of
water was the ability to --
1. disperse seeds
2. produce fruit
3. photosynthesize
4. conserve water
(will give brainliest for correct answer. )
Answer:
The main adaptation that plants had to develop to live on land instead of water was the ability to disperse seeds.
Explanation:
1.disperse seeds is the answer.
During a baseball game, a hitter strikes the ball with a bat. When this happens, the ball and the bat exert a
force on each other. Why does the ball accelerate away from the bat more than the bat accelerates away from
the ball?
Answer:
The ball has greater velocity before the collision, so the force affects the ball more than it affects the bat. The ball has less mass, so the equal force on the ball and the bat causes greater acceleration of the ball. The bat exerts more force than the ball because the batter is exerting a force on the bat as it hits the ball
Explanation: can i get branliest???
Which species has the most chromosomes?
A.
cats
B.
dogs
C.
crayfish
D.
humans
Answer:
D. cray fish
Explanation:
humans have46 chromosomes
dogs have78
cats have 39
there are many types of cray fish
theses fishes range from 176 to 200 chromosome
the four most common chemical elements found in living matter are
1,C,H,O,P
2,C,H,O,N
3,C,H,N,P
4,C,H,O,S
5,C,H,O,Ca
Explanation:
In all living system we can always find basic elements carbon, oxygen, nitrogen and hydrogen, carbon is the basic building unit contained in living matter. The percentage of carbon in the mass of living matter is 19.0% oxygen and hydrogen are present in almost all organic compound which creates living organisms.
What is the dry bulb temperature
Answer:
i think it 1 decree
Explanation:1
Answer:
Hey mate........
Explanation:
This is ur answer......
The dry-bulb temperature (DBT) is the temperature of air measured by a thermometer freely exposed to the air, but shielded from radiation and moisture. DBT is the temperature that is usually thought of as air temperature, and it is the true thermodynamic temperature.
Hope it helps!
Brainliest pls!
Follow me! :)
Most of the stars on the HR diagram are classified as which type of star?
Answer:
My answer is MAIN SEQUENCE#CARRYONLEARNING
Which population eats kelp the most?
Answer:
bristle worms
Explanation:
In kelp forests, the most commonly found invertebrates are bristle worms, scud, prawn, snails, and brittle stars. These animals feed on the holdfasts that keep kelp anchored to the bottom of the ocean and algae that are abundant in kelp forests. Sea urchins will often completely remove kelp plants by eating through their holdfasts. Other invertebrates found in kelp forests are sea stars, anemones, crabs, and jellyfish.
Hope this helps!
Can you find out what the oldest evidence of multi-celled life is? Tell me about it.
Answer: the oldest evidence of multi-celled life is about 570 million years old, it was found in the west african state of gabon, thats all i know unfortunately ;/
Explanation:
What function do cones have?
cones help with near nearsightedness
cones help with night vision
cones help with far sightedness
cones help with color distinction
Answer:
CONES HELP WITH COLOR DISTINCTION
Explanation:
Cone cells, or cones, are one of the two types of photoreceptor cells that are in the retina of the eye which are responsible for color vision as well as eye color sensitivity; they function best in relatively bright light, as opposed to rod cells that work better in dim light.
NOT MY WORDS! But I got it from a reliable source! I HOPE THIS HELPS :)
Answer:DDDDDDDDD!! ITS D
Explanation:
PLEASE HELP WILL GIVE BRAINLIEST
After a lake dried up during a severe drought a section of undisturbed rock layers was exposed. The layers are represented below.
Fossils in Undisturbed
Rock Layers
eo
Source: https://www.superlachertools.net
This sequence of rock layers best illustrates the concept that
o A. it is important to preserve the diversity of species and habitats
OB new inheritable characteristics can result from the recombining
of genes
oc the living and nonliving environment both change over time
D. living organisms have the capacity to produce populations of
unlimited size
Answer:C
Explanation:
After a lake dried up during a severe drought a section of undisturbed rock layers was exposed represents that the living and nonliving environment both change over time. So the correct option is C.
What is fossil fuels?Fossil fuels is refers to as which is made from decomposing plants and animals. As the time changes, the living and non-living matter decomposes and deposited in deep layers of soil and converted into fossils after a million ages.
These fuels are present in the earth's crust and comprises carbon and hydrogen, which can be burned for energy. The Coal, oil, and natural gas are examples of fossil fuels.
For more information regarding fossils, visit:
https://brainly.com/question/79954
#SPJ2
Which factor does NOT provide evidence of common ancestry?
a.) DNA
b.) organism size
c.) stages of early development
d.) homologous structures
The size of the organism does not provide any evidence of common ancestry. So, the correct option is B.
What do you mean by Common ancestors?Common ancestors may be defined as those characteristics of different organisms that have two or more descendants in common.
The nature and morphology of the DNA, stages, and properties of the early development of organisms, and homologous structures provide significant evidence of common ancestry between the organisms of different species.
Therefore, the correct option for this question is B.
To learn more about Common ancestors, refer to the link:
https://brainly.com/question/1234951
#SPJ2
Do sex-linked traits that originate from mutated genes found on X chromosome affect one sex more than the other? why/why not
what animal is the descendant of Gilmoreosaurus
please help me
I am confused, could you please help. I’d appreciate it.
Answer:
I needed to use a water plant because it is most easily seen in water plants with the production of oxygen by photosynthesis.
You need to leave the apparatus in a light place because green plants absorb light into their leaves and convert it to energy by photosynthesis.
What do checkpoints do in the cell cycle?
Answer: Checkpoints in the cell cycle A checkpoint is a moment in the eukaryotic cell cycle where the cell considers internal and external inputs before deciding whether or not to divide. There are other checkpoints, but the following are the three most important: At the G/S changeover, there is a G checkpoint.
Explanation:
knowledge!
somebody pls help me
What is the cell Body
Answer:
cell body is the feelings of our heart
Explanation:
need ko na po
9. If you conducted the analysis portion of Experiment 2, you calculated
the rate at which the percentage of fish with a complete pelvis
decreased in that ancient lake. Do you think the same rate of change
would apply to modern fish populations?
A. Probably not, since the environment has changed so much in the 10
million years since that ancient lake existed.
B. Although we did not measure this directly, it is possible that the same
rate of change observed in the fossil record applies to modern
populations.
C. The fossil record analyzed in Experiment 2 only spans 15,000 years,
so we cannot draw any conclusions to modern populations, which
evolved over a much longer period of time, at least 10,000 years.
D. The rate of evolution of a particular phenotype cannot be calculated
from the fossil record because the fossil record is always fragmentary.
Answer: Although we did not measure this directly, it is possible that the same rate of change observed in the fossil record applies to modern populations.
Explanation:
Hi. You didn't give the experiment and I searched online but couldn't find the experiment but through further researches, I got to know that the correct option is B "Although we did not measure this directly, it is possible that the same rate of change observed in the fossil record applies to modern population"
Therefore, the correct option is B.
Choose the BEST EVIDENCE to support the CLAIM: Crater lake was formed when a volcanic cone collapsed and filled with water.
Option A-Sometimes the top of a volcano is blown off or collapses during an eruption, leaving a depression called caldera which filled with rainwater.
why did people disagree with carbon taxing ?
How can topsoll be replaced in an area that has been strip-mined?
O A) Vegetation will quickly form topsoil.
OB) Stockpile topsoil from the area before strip mining.
O C) Use mine waste for topsoil.
O D) Use crushed rock from the mine.
Answer:
I'm sure you meant to type "topsoil" but the answer to the question is B
CRITICAL THINKING 1. Name three things you could do each day to pro- duce less waste. 2. Explain how buying certain products can help reduce solid waste. 5. Analyzing Methods What are the advantages and disadvantages to producing degradable plastics? 6. Demonstrating Reasoned Judgement Read the Case Study in this section and decide which type of bag you would choose the next time you go shop- ping. Explain why you made this choice. What are other uses of the bag you chose? READING SKILLS 3. Describe the steps it takes to recycle a piece of plastic 4. List two benefits of composting.
According to Friedman and Roenman, high levels of stress are linked to __________.
cancer
Alzheimer's disease
emphysema
coronary disease
According to Friedman and Roenman study, high levels of stress are linked to Coronary heart diseases (CHD). Thus, the correct option is D.
What was Friedman and Roenman theory?
Friedman and Rosenman in the year 1976 conduced a research to show that people with type A personality run a higher risk of heart disease and high blood pressure than type Bs. Type A personality is ambitious, competitive, and aggressive while type B personalities may be patient, flexible, and laid-back.
Through their study, they remarked that the primary risk factors of Coronary Heart diseases (CHD), i.e. hypertension, smoking, and elevated serum cholesterol were found at a higher level in the people with personality A than that of personality B.
Therefore, the correct option is D.
Learn more about Stress here:
https://brainly.com/question/25681288
#SPJ6
ANSWER PLEASE !!
When is carbon NOT released back into the atmosphere?
A. when organisms die
B. when sunlight is absorbed in chlorophyll
C. volcanoes erupt
D. fossil fuels are burned
Answer: B. when sunlight is absorbed in chlorophyll
Explanation: