Answer:
DNA can store genetic information and most likely appeared before RNA.
Explanation:
Answer:
Vesicles that contained self-replicating RNA grew, split, and passed their RNA to daughters.
Explanation:
RNA played role in protein synthesis and also created its own catalyst.
Why do we need to fish on the reef?
If stripped fish become more visible to predators, their fitness for their environment will decrease. Over time ____ will favor solid-colored fish and their numbers will grow.
Answer:
predators
Explanation:
State ONE reason why muscle tissues are likely yo be affected by mitochondrial diseases.
(PLEASE ANSWER ASAP DUE VERY SOON, 15 POINTS!!)
Answer:
Mitochondria give more than 90% of the energy used by the body's tissues; mitochondrial disorders are caused by a lack of energy for cells of the body
Explanation:
Name the mechanism that caused the continents to move apart and summarize how scientists discovered it in 2-3 complete sentences.
Answer: Plate tectonics is now the widely accepted theory that Earth's crust is fractured into rigid, moving plates. In the 1960s, scientists discovered the plate edges through magnetic surveys of the ocean floor and through the seismic listening networks built to monitor nuclear testing, according to Encyclopedia Britannica.
Explanation:
Please help me with this !
Answer:
1. E
2. C
3. A
4. D
5. F
Laboratory Thermometer hermometer, is used for measuring temperatures other than the human body temperature. Could use as tool for experimentation or any other scientific field activities.
Clinical Thermometer is meant for clinical purposes. It is developed for measuring the human body temperature.
Acid is a kind of chemical compound that when dissolved in water gives a solution with H+ ion activity more than purified water. An acid is a proton donor.
Base is an aqueous substance that donates electrons, accept protons or release hydroxide (OH-) ions. A base is a proton acceptor.
The leaves of plants have many specialized structures. Which statement explains the importance of the stomata and guard cells for the plant?
o They protect the plant from pests
o They are involved in plant reproduction
They work together to regulate water loss and gas exchange.
o They regulate the amount of water that enters the plant for cellular respiration
Answer:
They work together to regulate water loss and gas exchange.
They work together to regulate the loss of water and exchange of gases.
Stomata and guard cellsThe tiny pores or openings in plant tissue, which allow for the exchange of gases are known as stomata.
The unique cells, which surround stomata and work to close and open the stomatal pores are known as guard cells.
Both these helps a plant to take in carbon dioxide at the time of photosynthesis and also assist in reducing the loss of water by getting closed when conditions are dry and hot.
Thus, stomata and guard cells work together to regulate the loss of water and gas exchange.
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How many different gametes can be produced by a tall, yellow-seeded, purple-flowered, and wrinkled-seeded pea plant (TtYyPprr)?
A 2
B 4
C. 6
D. 8
Answer:
I think it could be either C or D
Six different gametes can be produced by a tall, yellow-seeded, purple-flowered, and wrinkled-seeded pea plant (TtYyPprr). Thus, option C is correct.
What is genotype?The genotype of the plant with yellow round seeds will be YYRR and produce YR gametes, while the genotype of the plant with green wrinkled seeds will be yyrr and produce yr gametes.
A true breeding plant always has identical alleles of a gene and is homozygous in nature. The genotype of the true-breeding parents with yellow round peas: YYRR. The genotype of the pure breeding parent plant with green wrinkled peas: yyrr.
Gametes are always pure which means that a gamete carries only one allele of a gene. Since both the parent plants are true breeding, there will not be any segregation of alleles during gamete formation. Therefore, the parent plant with yellow round peas "YYRR" would form all the gametes with "YR" alleles while the parent plant with green wrinkled peas "yyrr" would form all the gametes with "yr" alleles.
Therefore, Six different gametes can be produced by a tall, yellow-seeded, purple-flowered, and wrinkled-seeded pea plant (TtYyPprr). Thus, option C is correct.
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Which of the following is not a cause of mutation?
A. Errors during replication
B. UV radiation
C. Oncogenes
D. Harmful chemicals
Oncogenes is not a cause of mutation.
What are Oncogenes?An oncogene is a gene that has the potential to cause cancer. In tumor cells, these genes are often mutated, or expressed at high levels. Most normal cells will undergo a programmed form of rapid cell death when critical functions are altered and malfunctioning. They regulate cell proliferation, growth, and differentiation, as well as control of the cell cycle and apoptosis.
Therefore, (C) option is the correct answer.
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A gene carries the ____
for a trait.
a.) equipment
b.) instructions
c.)materials
d.) protection
brain pop
Answer:
b.) instructions
Explanation:
Genes carry the information that determines your traits
In humans, a sperm cell and an egg cell normally fuse in the upper portion of the what?
Answer:
Womb or Uterus.
Part 1: Which compound does C represent?
Part 2: Name a process that could release this compound into the air.
Part 3: Explain how the elements that form it are conserved during the carbon cycle. Use complete sentences to explain your answer.
Justify how this compound was created from a recycling of carbon in the carbon cycle. Use complete sentences to explain your answer.
Answer:
part 1: Carbon dioxide
part2: combustion, respiration
part3:
- carbon in the atmosphere is removed by green plants and phytoplanktons in water bodies through the process of photosynthesis.
-The CO2 is then incorporated into carbohydrates such as sugar or starch and eventually to lipids and proteins .
-The plants are later on consumed by the animals and the organic matter in the plants are digested b,absorbed and make up the animal tissues.
-The formation of fossil fuels(fossilization) and limestone also removes CO2 from the atm.
-CO2 in the atm also dissolve in water to form acid rain thus removing CO2 from the atm.
- CO2 is added into the atm by respiration. During respiration plants and animals oxidize carbon compounds in their cells breaking them to CO2 and water which are later excreted into the atmosphere.
- When plants and animals die their remains are broken down by saprophytic organisms converting the carbon compounds to CO2 which is released into the atm.
- When eruption occurs gases are released into the atm amongst which is CO2 thus increasing its conc in the atm.
-
Explanation:
From what I could understand the first part of part three talks abt the removal of carbon dioxide from the atm while the second part talks abt its addition. I hope I got it right.
Which one is the true answer
what is the difference between prokaryotic and eukaryotic cells
Answer:
Prokaryotes are organisms that consist of a single prokaryotic cell. Eukaryotic cells are found in plants, animals, fungi, and protists. They range from 10–100 μm in diameter, and their DNA is contained within a membrane-bound nucleus. Eukaryotes are organisms containing eukaryotic cells.
Which biome is characterized by plants that drop their leaves in the winter?
Answer:
Temperate Deciduous Forest Biome
Temperate Deciduous Forest Biome
This biome is named for the dominant trees that drop their leaves during the winter months. These forests may have an overstory of 20–30 m tall trees, an understory of 5–10 m trees and shrubs, a shrub layer around 1–2 m in height, and a ground layer of herbaceous plants.
Explanation:
exposed soil holds more water than cultivated soil. true or false
Hunting reserves also support wildlife conservation.give reason
Answer:
. because wild life is a renewable natural resource
Which type of plant tissue contains open vessels that transport water, ions, minerals, and nutrients throughout a plant?
o dermal
ground
ОО
meristematic
vascular
Vascular tissue contains open vessels that transport water, ions, minerals, and nutrients throughout a plant.
Vascular plant tissues in higher plants can be divided into phloem and xylem.These tissues (vascular) are fundamental to transport water and solutes to all tissues of a plant.Conversely, meristematic tissue is a type of tissue composed of undifferentiated cells.In conclusion, vascular tissue contains open vessels that transport water, ions, minerals, and nutrients throughout a plant.
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What can we learn about the organisms on this chart? *
A. Some of the animals are monkeys
B. They are each Classified under a different Kingdom
C. They have the same scientific name
D. They are closely related
Which of the following pathways produces a new fertilized egg cell
(Please help!!1!!) Name something about spiders that help them survive? what about exoskeletons and whatnot?
Sorry about only 10 points for answering, I only have 13 left. :(
Answer:
They can last long amounts of time without food, which is lethal for hunting food, patience is very important so spiders obtain one of the best skills. Spiders do not have any bones in their body, which makes them very flexible.
Janile got 4 kilograms of candy when she went trick-or-treating at Halloween. Since she didn't want to eat it all, she decided to share it with her 4 friends. If the 5 of them share the 4 kilograms, how much will each of them have?
Answer:
4/5= 0.8 kg per person.......
through which fastest medium would sound travel fastest? iron or water at 25 degree C ?
How does a chemical equation with coefficients relate to the law of conservation of mass?
A.The total mass must remain constant in a chemical reaction with coefficients in order for a physical change to occur
B.The number of atoms of each element must remain the same before and after a reaction in order for mass of the products to be the same as the mass of the reactants
C.The total mass of the reactants cannot equal the total mass of the products
D.The number of atoms in each element must change after the reaction in order for the mass to remain constant
DO NOT GIVE A LINK TO THE ANSWER PLEASE
Answer:
Every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. ... Use coefficients of products and reactants to balance the number of atoms of an element on both sides of a chemical equation.
Explanation:
Help me please!!!! :(
Answer:
You could search the cell and It will tell you the organelles.
Explanation:
I NEED HELP ASAP!!!!!!!
Answer:
3rd Option. Greater no. of different population
How does surface mining impact the lithosphere
A. Increases water pollution
B. Increases soil erosion
C. Increases air pollution
D. Decreases animal habitats
Answer:
b
Explanation:
did the assignment
Which of the following would be most likely to provide nitrogen to enrich the soil in which it is grown?
corn
wheat
soybeans
cabbage
Can you guys help me???
Why does dna polymerase can't synthesize the ends of linear dna?
Answer:
DNA pol uses the energy provided by hydrolysis of the high-energy phosphate bond at the 5' end of the incoming nucleotide to add it to the 3' end of the growing DNA.Without the high-energy phosphate bond, the correct nucleotide can not be added.
Explanation:
what are bacteria found
Answer:
Bacteria are found in every habitat on Earth: soil, rock, oceans and even arctic snow. Some live in or on other organisms including plants and animals including humans. There are approximately 10 times as many bacterial cells as human cells in the human body.
Answer:
Bacteria are found in every habitat on Earth: soil,rock,oceans, and even arctic snow
which of the following is NOT part of the First Line of Defense?
A vomiting
B phagocytes
c) sebum (oil on skin)
D) flow of urine
E cilia
Answer:
c (Sebum )( oil on skin )
Explanation: Cuz it is the best solution for girl's self defense if they don't have any pepper spray.