Answer:
The first cells were most likely primitive prokaryotic-like cells, even more simplistic than these E. coli bacteria. The first cells were probably no more than organic compounds, such as a simplistic RNA, surrounded by a membrane.
Answer:
I agree with xXMaryaXx. I'm pretty sure she has the answer you are looking for :)
Explanation:
We run, play, work, study. We need energy to do all of this. In fact, one characteristic of living things is that they need and use energy. Two processes are needed in us humans to break down food to release the energy that is stored in our food. They are ____________ and cellular respiration.
A) circulation
B) digestion
C) excretion
D) photosynthesis
I think digestion would be the answer here. Humans can't do photosynthesis. Excretion is how we expel waste. And circulation is how oxygen gets to our cells.
Does this help?
why are there black holes on the moon
I REALLY NEED HELP ASAP!!!!!!!
*I attached a picture but heres the question just in case!"
"The diagram below shows the structures of an animal cell. What is structure 3, and how does it help sustain life?"
Answer: I think it’s B but I am not sure sorry dude
Explanation:
Use your knowledge of the mechanism of photosynthesis and the data presented in the chart to determine which of the statements is a correct explanation for the students' data.Group of answer choicesCup 2 had the highest rate of photosynthesis because it had the highest ratio of disks floating to wattage of light.Cup 1 had a low rate of photosynthesis because 0.5 grams of baking soda did not provide a sufficient amount of CO2.Cup 3 had the same rate of photosynthesis as Cup 1 because they had the same ratio of disks floating to wattage of light.Cup 4 had the lowest rate of photosynthesis because it had the least CO2.
Answer:
D. Cup 4 had the lowest rate of photosynthesis because it had the least CO2.
Explanation:
Carbondioxide gas is the main reactant for the process of photosynthesis which decides the production of food in the leaves. If plants has high amount of carbondioxide gas and water so in the presence of sunlight it produces more food in the leaves in the form of glucose so we can conclude that the lowest rate of photosynthesis occurs due to presence of least concentration of carbondioxide gas in the cup 4.
what is a turgid cell
Answer:
turgid refers to cells or tissues that are swollen from water uptake. Many cell types in many different organisms can become turgid due to water uptake. Some cells will lyse, or split open if they become too turgid.
Answer:
Explanation: turgid refers to cells or tissues that are swollen from water uptake. Many cell types in many different organisms can become turgid due to water uptake. Some cells will lyse, or split open if they become too turgid.
Which term refers to a significant but short in duration physical change or event within an ecosystem
A. deforestation
B. succession
C. climax
D. disturbance
How does temperature affect rocks?
Temperature can cause rocks to expand or contract.
Temperature can change the texture of a rock.
Temperature can relocate rocks.
Temperature changes rock composition.
Answer:
temperature can cause rocks to expand and contract
A certain mutation in the gene for hemoglobin results in the red blood cells becoming sticky,
rigid, and irregularly shaped. These irregularly shaped red blood cells block the flow of blood
throughout the body. A single base mutation is responsible for these irregularly shaped blood cells.
Which of these mutations most likely results in the mutated hemoglobin gene?
F. Insertion
G. Deletion
H. Duplication
J. Substitution
Answer:J
Explanation:Substitution
Mutation in genes can result in different types of abnormalities. In gene related to hemoglobin makes RBCs sticky, irregular shaped, this is because of substitution.
What is substitution?Mutation is a type of replication error during formation of new DNA.
In substitution mutation, incorrect nucleotide is placed at incorrect position during DNA replication, a point mutation occur in which a single nucleotide is substituted.
It actually does not add or remove any nucleotide from the sequence, just it substitute it.
In gene related to hemoglobin, the amino acid glutamic acid gets replaced with the valine amino acid at position 6 in beta-globin, which results in sticky, irregularly shaped red blood cells.
Thus the correct option is J.
For more details regarding substitution mutation, visit:
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Why are detritivores important to an ecosystem
Answer:
Detritivores are an important part of ecosystems because they contribute to the decomposition and recycling of nutrients.
Explanation:
hope this helps
A land based global community of organisms is called a?
4. why would a photosynthetic bacteria cell be classified as phytoplankton?
Give two examples of pioneer species.
Answer:
Two examples of pioneer species are lichens and bacteria
Explanation:
helps it helps
have a great day
Which one the following is the most stable?
Answer:
plz tell which is your following
Current wind, solar, nuclear and hydroelectric energy technologies
А
emit carbon dioxide
B
are able to deliver all the energy we need
с
don't have the efficiency and scale we need
D
burn a lot of fossil fuels
What would be the best reason for having the lamp on during the experiment
Answer:
I'm not entirely sure what the experiment is BUT if I had to guess it would to help you see.
Explanation:
Sorry, I couldn't help it. In all reality I'm not possitive as to what the experiment is so I can't really give you a true answer besides this one
4. On the basis of what criteria did Linnaeus classify “natural bodies"
into his system?
Answer:
Metamorphism is the answer
The word "mycotoxins" means © food poisons parasitic poisons fungus poisons O bacteria poisons
Answer:
I think the answer is food poison
Answer: poisons fungus poisons
Explanation:
What is the most likely reason the bones of the reptiles were found on more than one continent
Answer: Plate Tectonics
Explanation:
How many copies of each chromosome do you have?
Answer:
2
Explanation:
Answer is 2....znskskskskskndk
Answer:
We all have two copies of every chromosome (except males who have one X and one Y plus 22 other pairs). Mom and dad give us copies of half their DNA -- one of each chromosome. At the end, we all have two copies of each of our chromosomes just like mom and dad
Using information from the cladogram and the data table shown below, which of the following best describes the evolutionary history of gorillas?
They are more closely related to salamanders than they are to lizards.
They evolved into a separate species as a result of bipedal motion.
They have jaws, lungs, hair, an amniotic membrane, and a tail but lack bipedal motion.
They share a more recent common evolutionary ancestor with leopards than they do with lizards.
Answer:
Several differences allow the human to walk erect on two legs with a striding gait rather than move in a knuckle-walking fashion like the gorilla. In the pelvis these differences include ...
Which of the following is an example of microevolution?
A. The formation of four new species of fish in a lake over thousands of years
B. A mass extinction that occurs because of major environmental changes in a habitat
C. A change in the frequency of body color in species of beetle over time
D. The formation of two new species of rodent that have been isolated by a mountain range
What type of organism really spread and diversified during the Cenozoic?
reptiles
fish
amphibians
mammals
Mammals really spread and diversified during the Cenozoic era. So, the correct option is D.
What was Cenozoic era?The Cenozoic Era is defined as the third of the major eras in Earth's history that began about 66 million years ago and extends to the present. This epoch was the interval of time during which the continents assumed their modern configurations and geographic positions during which the Earth's flora and fauna evolved towards the present.
The Cenozoic Era is called the "Age of the Mammals", while the typical landscapes of North America began to develop during the Cenozoic. Birds and mammals rose to prominence after the extinction of giant reptiles.
Thus, Mammals really spread and diversified during the Cenozoic era. So, the correct option is D.
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The phylogenetic tree shown shows the evolutionary relationships among finches
What can be concluded from this diagram?
A. Warbler finches and cactus finches are the most closely related.
B. Tree finches and warbler finches are the least closely related.
C. No finches have a common ancestor.
D. Tree finches and cactus finches have a common ancestor.
The phylogenetic tree shown shows tree finches and cactus finches have a common ancestor. So, the correct option is D.
What is Phylogenetic tree?A branching diagram that depicts the evolutionary relationships between a set of creatures, species, or genes is called a phylogenetic tree, sometimes referred to as an evolutionary tree. On the basis of the similarities and contrasts in their physical or genetic traits, it depicts the evolutionary history of these groups.
We can draw the conclusion that cactus and tree finches are more closely connected to one another than they are to any other finch species on the tree. The diagram does not indicate if tree finches and warbler finches are more or less closely related to one another, or whether cactus finches and warbler finches are.
Therefore, the correct option is D.
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What is the water table?
Answer:
C: The top of a saturated aquifer
Explanation:
The water table is the upper surface of the zone of saturation. This zone of saturation is where pores and fractures of the ground get saturated with water. It can also be simply explained as, the upper level, below which the ground is saturated.
When the person from number one was creating "true breeding" lines of plants for certain traits, what method was used?
Complete question:
When the person from number one was creating true-breeding lines of plants for certain traits, what method was used?
A. Self pollination over and over again while discarding plants with unwanted traits
B. Cross-pollination over and over while discarding plans with unwanted traits
C. Allowing for cross-pollination by bees
D. Not allowing the plants to pollinate at all
Answer:
A. Self pollination over and over again while discarding plants with unwanted traits
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
HELP ASAP!!!!!!! PLEASE !!!!
Which property of water allows water to be resistant to sudden temperature changes?
Choose 1 answer:
A) Surface tension
B) Density
C) Adhesión
D) High specific heat capacity
Answer:
your answer will be (A) surface tension
Answer:
High Specific Heat Capacity
Explanation:
A man with heart disease lives in a family that eats a lot of red meat. Wha
to his environment?
O Analyze the patient's family history regarding heart disease
O Analyze the patient's diet to quantify cholesterol intake
O Determine the exact amount of cholesterol in the patient's blood
O Determine if the cholesterol will lead to high blood pressure
Answer:
Analyze the patient's diet to quantify cholesterol intake
Explanation:
This is because since the patient family consumed more of red meat, it should be analysed. Because researches find out that red meat either processed or unprocessed contain more protein than fish, milk, and it can raise cholesterol levels. Red meat contain high cholesterol and increaee in cholesterol levels can lead to coronary heart diseases.
Answer:
B
Explanation:
10. What is the net force?
5 N
5 N
5N
Answer:
The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude and opposite direction will cancel each other out.
Answer:
Formula of Net Force
FN is the force acting on a body. When the body is at rest, the net force formula is given by, FNet = Fa + Fg.
https://byjus.com/net-force-formula/
will help you out here
Explanation:
Why is hypertension, or high blood pressure, a serious health risk?
Which of the following best describes a process by which metamorphic rock becomes igneous rock
A.weathering into sediments, then eroding
B.compacting under pressure and cementing
C.changing shape under heat and pressure
D.melting completely, then cooling