Lewis and Benny have been studying about the rate of photosynthesis in plants
and are planning an investigation. They each conducted research and wrote
down their observations. They made a list of investigative steps: drawn
conclusions, measure, create a hypothesis, and interpret data. Which step should
occur first in Lewis and Benny's investigation?
interpreting data
writing a conclusion
creating a hypothesis
taking measurements
Answer:
creating a hypothesis
Explanation:
The scientific method is a logical and systematic procedure used to understand phenomena from the real world. The scientific method involves several sequential steps: 1-to observe and pose a question on a particular phenomenon from the real world, 2-to raise a hypothesis or 'explanation' to these observations (this explanation allows to obtain a predictive pattern in order to explain further observations), 3-to test the hypothesis by experimental procedures or further empirical observations, 4-to analyze and interpret data (results), and 5- to reach to a conclusion that confirms or rejects the working hypothesis. A good hypothesis must be 1-plausible (i.e., it is scientifically adequate and appropriate), 2-falsifiable (i.e., it may have a negative answer) and 3-testable (i.e., it must be proven by scientific data).
What process is responsible for satisfying the third tenet of the Cell Theory, which states that new cells originate from other living cells?
Answer:
Cell division
Explanation:
Everything starts from the union of a sperm and an egg, which gives rise to a cell, which has to become an adult organism. For this, this cell divides in such a way that in each division exactly the same genetic information is maintained. The cell is the reproductive unit of living beings. Throughout its life the cells are nourished and increase in size. When a cell reaches the appropriate size, it usually gives rise to two cells similar to the original cell. Cell Theory is one of the fundamental bases of biology and it is where the base of the constitution of living beings and the fundamental role of cells in them is summarized. It is formulated in the first place thanks to observations and formulations of Theodor Schwann ( physiologist) and Matthias Schleiden (botanist).The current third principle of cell theory, formulates that a cell comes from another cell, by cell division or by formation from stem cells. The oldest and most primitive cells in the world are prokaryotes (without a cell nucleus).
HELPPP!!!! AG CLASS
Complete the following sentence.
The design element of ____________ evokes the sense of touch, conveying coarseness, smoothness, and complexity through light, shadow, and pattern.
Answer:
I believe the ans is texture.
Complete the following sentence.
The animal (_____) industry provides nearly 2 million American jobs.
Answer:
livestock
Explanation:
Answer:
agriculture
Explanation:
Edge Animal systems
Sketch a replication fork of bacterial DNA in which one strand is being replicated discontinuously and the other is being replicated continuously. List six different enzyme activities associated with the replication process, identify the function of each activity, and show where each would be located on the replication fork. In addition, identify the following features on your sketch: DNA template, RNA primer, Okazaki fragments, and single-stranded DNA binding protein.
Answer:
DNA Helicase is the enzyme that unwinds the double-stranded DNA into two single strands forming a replication fork.
DNA topoisomerase II or Gyrase is the enzyme responsible for relieving or relaxing the topological stress caused by the unwinding of DNA double strands.
DNA polymerase III is the primary replication enzyme. It is responsible for adding deoxyribonucleotides to the RNA primer both in the continuous or leading strand synthesis as well as in the discontinuous or lagging strand synthesis of DNA.
Primase is the enzyme responsible for the synthesis of the RNA primer (a short segment of RNA) to which deoxyribonucleotides are added.
DNA polymerase I is responsible removing and replacing the RNA primers with DNA in the newly DNA strands.
DNA Ligase is the enzyme responsible for sealing the gaps in the DNA due to broken phosphodiester bonds after the removal of the RNA primer.
Explanation:
The sketch of the replication fork of bacterial DNA showing where one strand is being replicated discontinuously and the other is being replicated continuously, as well as the different enzymes involved and their location of activity is found in the attachment below.
DNA replication occurs in the 5' to 3' direction by DNinA polymerases.
Continous DNA replication occurs in same direction as the direction as the replication fork, in the 5' to 3' direction.
The discontinuous replication occurs in fragments of DNA known as Okazaki fragments which are then ligated by DNA ligase.
Which statement best describes ecological succession?
A. It is always caused by human intervention.
B. It occurs after a disturbance.
C. It never occurs in a predictable pattern.
D. It is a series of rapid changes in an ecosystem.
Answer:
The statement which best describes about ecological succession is that the one which states that It is a series of 'rapid changes' in an ecosystem.
Ecological succession is caused by human intervention. Therefore, the correct statement is option B.
What is ecological succession?Ecological succession is a natural process that takes place after an ecosystem is disturbed by something like a fire, flood, or human activity. It is an anticipated example of changes in the species synthesis and local area design of an environment over the long haul.
Ecological succession is a process in which the ecosystem's physical and biological characteristics undergo a series of gradual shifts over many years or even centuries.
From the pioneer stage to the climax stage, where the ecosystem reaches a relatively stable state, ecological succession involves a series of stages. Different species of plants and animals replace one another during ecological succession, resulting in shifts in the ecosystem's physical and biological conditions.
Therefore, ecological succession is caused due to human intervention where the ecosystem is disturbed by a fire, flood, or human activity.
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crossing two genetically different individuals
A.) inbreeding
B.) cloning
C.) selective breeding
D.) hybridization
PLS SOMEONE HELP I HAVE AN HOUR ITS DUE!
Answer:
100%
Explanation:
Use a Punnett square to facilitate calculating the possibility.
y y
Y Yy Yy
Y Yy Yy
Y is the white teeth trait, which is dominant. So, there is a 100% chance, though heterozygous.
Vertebrates include fish, amphibians, reptiles, birds, and mammals. Analyze the common characteristics of reptiles and explain how they differ from mammals.
Answer:
there are some differences though. ...
Explanation:
What percentage of the offspring will be purebred dominant? (Help, if you responded thank you)
Answer:
25%
Explanation:
it is only 25% percent because it said purebred which means two identical alleles and YY was the only purebred dominant trait. It is also 25% because you split it up into fours. Its like splitting up a dollar. One trait means 25% two traits 50% three traits 75% 4 traits 100%. hope this helps
Which trophic level does the stingray belong to?
Answer:
Secondary consumers with a TL <4.00 represented 84% of the species examined, with the remaining 12 species (16%) classified as tertiary consumers (TL ≥4.00). Tertiary consumers included electric rays (Torpedo, 3 spp. and Hypnos, 1 sp.), butterfly rays (Gymnura, 4 spp.), stingrays (2 spp.)
Explanation:
I think but sorry if it was wrong.
4.3.2 Test (CST): Earth's Plates Question 4 of 6 The pale colors on the map show how likely it is that each area will experience a high-magnitude earthquake. The dark red and black dots show which areas have the highest human population densities. USGS B A А Most likely C pls help
Answer: Region C, in the California area
Explanation:
This area is at the highest risk for earthquakes according to the color key on the map (red being the most vunerable, green being the least), and has a high population density. Compared to other regions, citizens in region C should be most prepared for earthquakes.
Region C, in the California area will experience a high-magnitude earthquake.
What is Earthquake?
It's a sudden violent vibrations of high intensity of the ground which causes great destruction, due to movements within the Earth's crust.
Given area is at the highest risk for earthquakes ,according to the color key on the map and has a high population density. When compared with other regions, citizens residing in region C should be most prepared for earthquakes.
Thus, region C is most likely to have Earthquake.
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What do the junctions of a cladogram represent?
Answer:
Answer
A cladogram is a visual chart orrepresentation of cladistics. They consist of horizontal or vertical lines connecting various organisms. These different lines branch off from a common point on the cladogram. These branch points represent a common ancestor shared by the organisms that emanate from the branch point.
The junctions of a cladogram represent the branching points in evolutionary relationships between different groups of organisms, and the cladogram is a type of evolutionary tree.
What is the significance of the junction in the cladogram?The junctions in a cladogram can also be used to infer the evolutionary relationships between different groups of organisms based on the pattern of shared derived characters, and the branching points in a cladogram represent the divergence of lineages. The presence of a derived character in multiple groups at a junction in a cladogram indicates that the character was present in the ancestral group, and this is widely used in evolutionary biology.
Hence, the junctions of a cladogram represent the branching points in evolutionary relationships between different groups of organisms, and the cladogram is a type of evolutionary tree.
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Which of these is true for a fetus by the end of the first trimester of fetal
development?
A. Its weight is half what it will be at birth.
B. Its lungs are fully developed.
O C. Its placenta has served its purpose.
.
D. Its external sex organs have formed.
Answer:
the answer is A :)!!!!!!!!!
TRANSLATE the mRNA into amino acids:
AUG CAC UGU CCU UUC GCU GAC CCC UAA
Answer:
sorry brojjjjhhhfdeewa
PLEASE HELP TO SOLVE IT I HAVE AN EXAM !!!
An organism has 2 chromosomes in its cells (the diploid number is 2). Calculate the number of chromosomes in a cell in the 5th generation if egg and sperm cells were diploid
Answer:
64
Explanation:
Since the cell has two chromosomes and a diploid number of 2, in each generation, the cell doubles. In the first generation, we have two cells, in the second generation, we have 2 × 2 cells ,in the third generation, we have 2 × 2 × 2 cells. It follows that we have 2ⁿ cells in each generation where n represents the generation.
So, in the fifth generation, n = 5, so the number of cells is 2⁵ = 32.
Since we have 2 chromosomes in each cell, the number of chromosomes in the 32 cells in the 5th generation is 2 × 32 = 64 chromosomes.
explain in your words indigenous knowledge
Answer:
is the unique knowledge confined to a particular culture or society. It is also known as local knowledge, folk knowledge, people's knowledge, traditional wisdom or traditional science.
Explanation:
From where does the fern get the carbon dioxide required for photosynthesis?
Answer: From the air.
Explanation: On the surface of the leaves of the plants there are a large number of tiny pores known as stomata or stoma. For photosynthesis, green plants take carbon dioxide from the air. The carbon dioxide enters the leaves of the plant through the stomata present on their surface.
How does the addition of rubber bands affect the range of motion of the joint
The ability of an ecosystem to support life declines sharply after a population crash
among some of the organisms. A population crash among organisms with which
characteristic could have caused the sharpest decline?
A hibernation during the winter
B mobility on land and in the air
C conversion of sunlight into food energy
D different fur coloring in summer and winter
Answer:
c
Explanation: all other traits are irrelevant and could reply to any part o the food chain, c means that the plats have dropped, meaning that the things that eat the plants wot be able to eat the plants, (primary consumers)and the secondary consumers wont be able to eat the primary consumers,then the tertiary consumers wont be able to eat the secondary consumers. In simpler terms it would cause a chain reaction that would detonate the whole foodchain.
AG CLASS
Which of the following distinguishes the horticultural professional consulted regarding the best standard practices for dealing with a fungus outbreak in a greenhouse?
horticultural therapist
floriculturist
viticulturist
phytopathologist
Answer:
phytopathologist me thinks...
if you see this stan ateez <3
n 2000, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found. The fossilized dinosaur was sticking out of the wall of a canyon in Montana. Many scientists were eager to study the fossils.
Dr. Mary Schweitzer got one of the leg bones to analyze. Dr. Schweitzer’s assistant dissolved the bones in acid and discovered that some soft tissue had survived even after 68 million years. The discovery was a shock to the scientific community. No one had ever found such old tissues.
Before laying eggs, female birds store calcium inside their bones that they will need to make eggshells. This layer of bone is called medullary bone. In the T. rex leg bone, Dr. Schweitzer found tissue just like the medullary bone of birds. The dinosaur was a female! If Dr. Schweitzer’s hypothesis is right, she is the first scientist to identify the sex of a T. rex. Which organ system includes the bones?
A. skeletal system
B. muscular system
C. reproductive system
D. integumentary system
Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found and is the first scientist to identify the gender of a T. rex, the organ system is the skeletal system, as it includes the bones that are present in Option A.
What is the significance of the skeletal system?The skeletal system, which provides structural support, is important for animals as it protects vital organs, supports muscles, and helps in movement. Also, the bones synthesize the blood cells, such as the red blood cells, which carry nutrients and oxygen, it also maintains the individual's balance and posture and provides a veil over the fossil records.
Hence, Bob Harmon discovered the best-preserved Tyrannosaurus rex skeleton ever found and is the first scientist to identify the gender of a T. rex, the organ system is the skeletal system, as it includes the bones that are present in Option A.
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I need help to make an acronym with these words
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
like, for example, "please excuse my dear aunt sally"
(parenthesis, exponents, multiplication, division, addition, subtraction.
Answer:
Dear kayla please come obediently for Gary's safety
What aspect of basterica makes recombainat dna technology effective?
A.bacteria have no dna
B Baxter’s have insulin genes
B.bacteria reproduce very quickly
D.bacteria only have mRNA
The EKG is hooked up, and Mr. M's trace looks very abnormal. His heart rate is low. The T wave, which indicates repolarization of the ventricles, is unusually large and pointed and the QRS wave, which indicates the depolarization impulse’s passage through the ventricles, is widened or slowed. "That's a classic EKG for hyperkalemia (high blood potassium)!" The doctor gives Mr. M an injection of calcium gluconate. Calcium ions block the Na+ channels on nerve and muscle cells. How will this help counteract the effects of high blood K+? g
Answer:
This question lacks options, options are: Mr. M's cells are depolarizing too easily. Blocking Nat channels will make it harder for them to depolarize, bringing their sensitivity back to normal O Mr. M has too little K* leaving his cells, so we need to block the Nat channels so the Kt channels can stay open and his cells can repolarize properly. Mr. M has too little K* leaving his cells, so we need to block the Nat channels so the Na /K+ ATPase can move Kt out of the cell effectively O Blocking Na* channels cannot help- it will only make his cells fire less, and he already has a weak heartbeat. Mr. M's cells are not repolarizing properly. Blocking Nat channels will help them repolarize normally, bringing their resting potential back to normal.
The correct answer is ''Mr. M's cells are depolarizing too easily. Blocking Na+ channels will make it harder for them to depolarize, bringing their sensitivity back to normal.''
Explanation:
Calcium administration is an emerging treatment modality aimed at restoring the transmembrane electrical gradient of cardiac myocytes. It probably achieves this goal by reducing the resting membrane potential of cells. Calcium antagonizes the effect of hyperkalemia on cardiac conduction, that is, it antagonizes the effects of K on the heart. Its onset of action is immediate, in a few minutes. Calcium gluconate antagonizes the excitability of the cardiac membrane, that is, it decreases the excitability of the membrane and it does not affect serum levels, it is generally accepted that calcium should be administered when there are ECG changes associated with hyperkalemia.
How does a decrease in abiotic resources impact the population growth in an ecosystem?
A. The population size will increase
B. The population size will decrease
C. The population size will not change
Answer:
B. The population size will decrease
Explanation:
Abiotic factors may include temperature, sunlight and water. If conditions are too cold for the organisms living there, they may perish. If the amount of sunlight decreases, plants will not be able to produce enough glucose through photosynthesis. If the amount of water decreases plants may bot have enough water to photosynthesise and animals will have to compete for water.
Temperature, sunlight, and water are abiotic. Organisms may die in frigid environments. Therefore, option (B) is correct answer.
What are abiotic resources?Abiotic and biotic environmental factors fall into the category of population-influencing factors. The non-living physical and chemical components that make up an ecosystem, such as temperature, pH, sunlight, shelter, and day length, are referred to as abiotic variables.
Cold conditions can cause the death of organisms. If sunlight dwindles, photosynthesis cannot produce enough glucose. Lack of water may make it difficult for plants to photosynthesize, forcing animals to compete for it.
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Which statement best describes the relationship that exists among proteins, DNA, and cells?
O Proteins combine to produce cells, which produce DNA.
O Proteins are made up of DNA, which determines the cells that are produced.
O DNA is made up of lipids, which tell a cell how to function.
O Cells contain DNA, which codes for the production of proteins.
Explanation:
chloroplast has dna cells
Answer:
they help keep cells working and give us different patterns
Explanation:
Which species list includes animals that would most likely be found in a taiga biome?
A. zebra, cheetahs, and grasses
В.
lynxes, moose, and pine trees
C.
camels, rattlesnakes, and cacti
D
parrots, frogs, and bamboo trees
Answer:
B. Lynxes, Moose, and Pine trees
Rain cannot occur until ____?
A. the air becomes saturated with water vapor
B. the water vapor exceeds an absolute humidity of 80 ppm
C. a warm front meets a cold front
D. clouds reach an altitude of 1000 ft
Answer:
A. the air becomes saturated with water vapor
Explanation:
The saturated water vapor air forms clouds ( nimbus clouds ) which hold that vapour at a low pressure
Answer:
A. The air becomes saturated with water vapor
Explanation:
Condensation happens one of two ways: Either the air is cooled to its dew point or it becomes so saturated with water vapor that it cannot hold any more water. Dew point is the temperature at which condensation happens.
If a codon has the nucleotide sequence UGA, what does the corresponding
anticodon have as its sequence?
A) UGT
OB) UGA
C) ACT
D) ACU