Answer:
A) Old Stone Age
Explanation:
SOMEONE PLS ANSWER THIS IK THERES NO PICTURE WITH IT BUT I NEED THE ANSWER BADLY.
Do you think what you observed is evidence that genes are instructions for proteins? Why or why not?
cant you please send the image
Answer:
no
Explanation:
parents can't pass down through genes you get them for yourself
Which of the following describes an acquired trait? *
1 point
An ant has six legs.
A rose has red petals.
A boy dyed his hair blue.
A dog has brown fur.
HELP ME PLESE ANYONE HELPP
Replacing incandescent lights with compact fluorescent lights
A) would have no effect on the total energy used for lighting.
B) would save energy but not money.
C) is an example of "supply side" energy policy
D) would save both energy and money.
E) would save money but not energy.
Answer:
The answer is D (would save both energy and money)
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
C.
Explanation:
Same groups on the periodic table have similar chemical behaviors because they have the same number of valence electrons
HELP!!!!! PLEASE
Which pair of molecules, when bonded together, would most likely be found in a molecule of DNA?
A) ribose and adenine
B) ribose and thymine
C) deoxyribose and uracil
D) deoxyribose and guanine
Answer:
D
Explanation:
The molecule of DNA contain deoxyribose as the backbones and guanine is one of the four bases that attached to each sugar.
A dichotomous key usually gives us two choices based on the physical characteristics or __________ of the organism.
1. legs
2. traits
Answer:
1
Explanation:
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20
2.
o
QUESTION 2 (ENZYME ACTIVITY]
The investigation was carried out to determine the effect of a detergent containing fat-
digesting enzymes on a fat stain.
The procedure was as follows:
Two identical cloths were used
Cloths A and B had identical fat stains.
Cloth A was washed using a detergent not containing fat-digesting enzymes for five
minutes at 37°C.
Cloth B was washed using a detergent containing fat-digesting enzymes for five minutes
at 37°C.
Answer:
Explanation:
Why are enzymes added to washing powder, and how do they work? Carry out some simple experiments to investigate this further. ... pepsin, a digestive enzyme in the stomach, works best at pH 2. ... People have been experimenting with ways to use the power of enzymes to clean clothing for a long time
please help answer these 3! 50 points
Answer:
it may affect the animals and other tree's.
Explanation:
it may affect animals because since it is a new tree, you might not know that it may be harmful for some animals, like maybe the berries the produce are poisonous or fruits some animals are forbidden to eat. this may be a problem because some animals may accidentally eat that fruit and possibly be injured or die.
trees need sunlight and food, if another tree hopes in suddenly there would be more competition for sunlight and water, there may also be not enough water and sunlight for all the trees to share. this is a problem because if the trees can't get enough sunlight and water, they would die and this leads to a broken home for the animals living in that tree.
Answer:
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list two functional difference between plant and animal
Answer:
A plant cell is larger than an animal cell. The shape of a plant cell is a fixed rectangular shape, whereas an animal cell is mostly round and irregular in shape. Plant cells store energy in the form of scratch while animal cells store energy in the form of complex carbohydrates and glycogen.
a model of a car has a scale 1:20. the volume of the actual car is 12^3 find the volume of the model
Answer:
86.4
Explanation:
Find the actual car volume, then divide it by 20
What items are used to identify the genetic makeup of an unknown organism?
Answer:
Polymerase chain reaction machine
Primers
Petri dishes
Test tubes
Pipettes
DNA Polymerase
Free nucleotides
The organism to be identified
Explanation:
To identify the genetic makeup of an unknown organism, the nucleotide sequences fond in the Deoxyribonucleotide (DNA) of a known organism is matched to the DNA of some known organisms. If there is a certain degree of sameness in most of the matched parts, then the unknown organism can be said to be related to the known organism. This is a comparative study.
To carry out this identification, items used include; primers, the PCR machine, test tubes, DNA polymerase, free nucleotides, etc.
Anthropologist recently discovered skull fragments from a previosly unknown primate. the mandible of the skull is shown below with mandibles of other known primates why would scientist use the fossil revords to help them determine the sprcies of uninown primates
Answer:
I need points but I hope you get the correct answer
Explanation:
:)
Explain why you should never eat mushrooms you find in the woods unless you know for certain which type of mushrooms they are.
Answer:
Because some of them are posinous/venomous and aren't edible
1. Why is it important to conduct a market survey?
As mentioned in the video, Dr. Nachman and his colleagues have collected dark and light colored mice from dark and light colored rocks in other areas of the American Southwest and found similar patterns (i.e., dark colored mice were more likely to be found on dark rocks; light colored mice were more likely to be found on light rocks). However, genetic analysis showed that the dark fur color in other rock pocket mouse populations was caused by mutations in different genes. This means that there is more than one way (genetically speaking) to make a mouse dark. It also means that adaptive mouse coloration has occurred more than once in similar environments across the southwestern US. How does this information support the concept that natural selection is not a random process
Complete question:
In a separate study, 68 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One collecting site was in Sonora, Mexico. The other three were in Chihuahua, Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three Chihuahua locations were slightly darker than the dark-colored mice from the Sonora population. The entire Mc1r gene was sequenced in all 68 of the mice collected. The mutations responsible for the dark fur color in the Sonora mice were absent from the three different populations of Chihuahua mice. No Mc1r mutations were associated with dark fur color in the Chihuahua populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases.
How does this study support the concept that natural selection is not random?
Answer:
The study supports the concept that natural selection is not random because in different areas with the same or very similar environmental characteristics, the same phenotype was produced by different types of mutations.
Explanation:
All of the sampled animals are inhabiting dark substrate. Probably animals needed to camouflage to survive. They can do it by having a similar fur color that the color of the rocks they live on. Natural selection must have driven them to produce dark color, similar to the substrate color. So animals from the different regions suffered different mutations that drove them to have almost the same dark fur color. The environmental condition is favoring the same phenotype.
A female with genotype FF has children with male with genotype Ff. F=Freckles fæno freckles
What % of their offspring would you expect to have freckles?
O 50%
o 25%
0 0%
100%
Answer:
100%
hope this helped you :)
How does natural selection lead to changes in organisms?
Answer:
it is every organisms goal to "survive and repopulate" therefore, with natural selection the weaker organisms die because they did not possess the traits necessary to survive, and the strong survive and repopulate
Explanation:
What is the disadvantage of having an exoskeleton?
Answer:
Disadvantages of having an exoskeleton include heightened vulnerability during the molting process and restrictive in terms of sizes and weights.
Explanation:
____ are coiled structures made of DNA and proteins.
a Chromosomes
b Ribosomes
C Both A and B
d None of the above
Answer:
a. Chromosomes
hope this answer helps you.....
During which moon phase do spring tides occur?
Answer:
full moon and new moon
Explanation:
took the test
What happen when RBC added with distilled water?
Explanation:
In hypotonic environment, the water would enter into the RBC in order to reach the equilibrium or equal concentration both inside and outside of the cell, which would cause the RBC to expand, and even burst
list two functional difference between plant and animal
Plants:-
# They are autotrophs (prepare their own food)
# They won't have locomotion for walk.
Animals:-
# They are heterotrophs (depends upon others for food).
# They have locomotion for walking purpose.
What does a scientific theory include
Answer:
it includes an explanation and a supported theory
Fill out this cell worksheet
Answer:
The correct answer is - 1. F 2. F 3. T 4. T 5. T 6. T 7. F 8. F 9. F 10. F
11. B, rectangular, and cell wall.
Explanation:
1. and 7. Only plant cells contain chloroplast to perform the photosynthesis process not animals. 2. and 6. Animal and plant cells both contain the mitochondria to perform cellular respiration in order to get energy from the food. 3. and 4. Plant cells have a rectangular shape structure and animal cells typically show round or spherical shape. 5. Both cells are eukaryotic cells so they carry the nucleus. 8. both cells have a cell membrane surrounding the other organelles. 9. Cell wall present in plant cells and not in animal cells. 10. A large central vacuole is present in the plant cell that performs various roles including the storage of water and nutrition.
11. In the given diagram The illustration B is a plant cell as it has a rectangular shape with a cell wall around the cell membrane.
Why is genetic variation among individuals beneficial?(1 point)
A) More genetic variation means higher rate of survival versus species that have less genetic variation.
B) Genetic variation staves off extinction because it creates a fit population.
C) Some individuals will have inherited traits that give them a competitive advantage that make them more likely to survive and reproduce.
D) Genetic variation leads to more new traits in the population which means evolution can occur faster.
Answer:
Some individuals will have inherited traits that give them a competitive advantage that make them more likely to survive and reproduce.
Explanation:
it was the correct answer from the test
Genetic variations may lead to the diversity in the phenotypes of surviving individuals. It reduces the chances of extinction.
What do you mean by Genetic variations?Genetic variations may be defined as the presence of differences in sequences of genes between individual organisms of a species.
Genetic variation among individuals is beneficial because some individuals will have inherited traits that give them a competitive advantage that make them more likely to survive and reproduce.
Therefore, it is discussed above that genetic variation among individuals is beneficial.
To learn more about Genetic variations, refer to the link:
https://brainly.com/question/14926046
DNA replication is said to be semiconservative. Which of the following statements correctly explains what this means?
Answer: DNA is a double stranded molecule. When DNA is copied the two strand of DNA (old strands) separate and new nucleotides match up with the two separated strands.
This process creates two identical double stranded DNA molecules are formed. Each DNA molecule contains one strand of the original DNA molecule and one newly synthesized (made) strand.
Explanation: https://youtu.be/Gxoyr8JKc4w
Hope this helps :D
The semi-conservative nature of DNA replication illustrates that each strand in the DNA double helix function as a template for the synthesis of a new or complementary strand.
What is DNA replication?DNA replication may be defined as a type of biological process that deals with the synthesis of two identical replicas of DNA from one original DNA molecule during cell division.
The semi-conservative model of DNA was proposed by Watson and Crick. This model implies that each double helix of DNA is composed of one new and one old strand.
In semi-conservative replication, the parental double helix is half conserved and each parental single strand remains intact.
Therefore, DNA replication is said to be semi-conservative due to the process of each new double strand consisting of one parental strand and one new daughter strand.
To learn more about the Semi-conservative model of DNA replication, refer to the link:
https://brainly.com/question/23278374
#SPJ6
Question 4 (1 point)
Which of the following is NOT an endotherm adaptatioon to changes in seasons?
change of body temperature
layers of fat
hiberntion
shivering muscles
Answer:
3
Explanation:
Can genetic engineering cause harm to humans?
Answer:
There are many risks involved in genetic engineering. The release of genetically altered organisms in the environment can increase human suffering, decrease animal welfare, and lead to ecological disasters. The containment of biotechnological material in laboratories and industrial plants contributes to the risk of accidental release, especially if the handling and storage are inadequate.
Explanation:
I did some research into this subject recently. I hope it has helped you!
How do plantes give off co2
Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration.
Hope this helps
please helppp
The diagram below represents a portion of a
strand of a DNA molecule.
Which diagram represents the strand of DNA that
is complementary to the strand above?
A) B) C) D)