Answer:
Sea urchin gametes are produced by injecting the urchins with 1mL of 0.5M Potassium Chloride solution. The solution is injected near the mouth of the urchin. This process kills the urchins, forcing them to release their sperm, in the case of a male, or eggs, in the case of a female
Explanation:
Elements are _____.
only found on earth
subatomic particles with a positive charge
substances that are made up of only one type of atom
a chemical substance composed of atoms of two or more different types of atoms
Answer:
C
Explanation:
An element is a material that consists of a single type of atom. Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.
If a medical professional is talking to you about the back of your head, where your eyesight is controlled, which region is being referred to?
the facial region
the cranial region
the appendicular region
the occipital region
Does water always follow the same path in the water cycle? Why or why not?
Answer:
Some of it evaporates, returning to the atmosphere, some seeps into the ground as soil moisture or groundwater, and some runs off into river or stream
Snakes sheds their outer most layer of skin regularly which characteristic of life is this action and example of
Answer:
Letting go of regrets and past decision.
Explanation:
Answer:
Growth
Explanation:
100%
write your answers in a different color that is easy to read.
1. What is the molecule used to transfer energy to living things? What is its long name?
2. What is significant about the three phosphates tied together in ATP that makes it ideal for
performing its job?
3. How is ADP different from ATP?
4.
What are the three phases of cellular respiration?
5. What is glycolysis? Include the starting molecule and end product of glycolysis in your answer.
6.
How many ATP molecules are required to start glycolysis?
Which of the following is an example of a ground in a building?
An extra electrical cord.
A pipe to the ground
A plastic rod
A metal rod in the air
Answer: its
A pipe to the ground
Explanation:
Just took the same quiz
Answer:
A pipe to the ground
Explanation:
what type of pathogen causes malaria?
Answer:
Malaria is caused by the Plasmodium parasite. The parasite can be spread to humans through the bites of infected mosquitoes. Plasmodium falciparum is mainly found in Africa.
Hope this helped :)
Answer:
protists
Explanation:
Organisms that cause disease to humans are known as "pathogens." There are many different types of pathogens such as: bacteria, fungi, virus, parasitic worms and protists.
Malaria is caused by the following parasites: Plasmodium ovale, Plasmodium malariae, Plasmodium falcifarum and Plasmodium vivax. These parasites are also known as "protists pathogens." They are transmitted by the female Anopheles mosquito and are being transferred to humans through mosquito bites. The parasites then thrives in the red blood cells of the infected individual.
What is the difference between infection and inflammation?
Answer:
Inflammation is always accompanied by infection.
Infection is not accompanied by inflammation.
Explanation:
Infection refers to the invasion of a virus pathogen within the body that can cause a disease. On the other hand, inflammation is the protective response of the body against the infection.
Inflammation is not always accompanied by infection.
Infection is usually accompanied by inflammation.
True or False; Diversity of life has decreased over Earth's history.
Answer:
true
Explanation:
Just think about extinction and how many species we have lost throughout time.
Which of the following does not describe neuroglia cells?
They support the nervous system.
They are 60% of the nervous system.
They protect the nervous system.
They conduct nerve impulses.
Answer:
Explanation:
Key Points There are two kinds of neuroglia in the peripheral nervous system (PNS): Schwann cells and satellite cells. Schwann cells provide myelination to peripheral neurons. Satellite cells play an important role in modulating the PNS following injury and inflammation.
Which of theses nutrients can be found in all organisms?
Nitrogen
Calcium
Carbon
Phonsphorous
Answer:
Carbon
Explanation:
Carbon is found in all living organisms
For each of the following statements, indicate whether the statement describes the P generation, F1 generation, or F2 generation.
The plants in the
were allowed to self-pollinate.
The plants in the
are true breeding.
After a cross, there are three times as many tall plants as there are short plants in the
.
Answer:
The plants that were allowed to self pollinate were the First filial generation, filial, Latin for family. Or just the F1 generation plants.
The plants that are true breeding are Parental generation or for shorthand, the P generation plants.
The plants where there were three times as many tall plants as short plants are in the second filial generation, or the F2 generation.
This question is based on the Mendel’s Experiment.
Sir Gregor Johann Mendel.
Mendel experimented on pea plants and gave the laws for genetics which are a very important aspect of hereditary. Because of his experiment the terms recessive and dominant came into light and how the genes are passed from generations were also studied.
The statements can be completed as:
Plants that were allowed to self pollinate were F1 or the first filial generation.The true-breeding plants are P (parental) generation.The plants having the phenotypic ratio of 3:1 for tallness and shortness are in F2(second filial) generation.The steps can be explained as:
The cross which is the first step between the given alleles of a trait in a cross is called parental (P) generation.The progenies produced as a result of a cross between the parental traits is called the first filial (F1) generation.When the traits from the F1 is interbred then a second filial generation (F2) is produced.To learn more about parental and filial generations follow the link:
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What is the twisted ladder shape of the DNA called?
3-D model
nucleotides
double helix
single strand
It’s hard will give brainlest
Answer:
i think it's the double helix
Explanation:
Answer: Double helix.
Explanation: It's called a double helix because it looks like a double helix.
1. How is the atomic number of an element calculated?
Answer:By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
Explanation:
whats the difference between ex vivo and in vivo gene therapy
Answer:
Ex vivo gene therapy - this is carried out by removing the intended cell from the patient's body before administration of the gene therapy, after which the cell is returned.
In vivo gene therapy - this is carried out directly on the cell while its still on the patient's body.
Explanation:
Ex vivo, Latin for "out of the living" is a process that takes place outside an organism. Scientifically, ex vivo involves experiments that are conducted outside of a living body; the tissues or organs are taken out of the body, experimented on and returned.
In vivo which is Latin for "within the living" on the other hand is a process that take place outside an organism. Unlike ex vivo, it involves experiments that are conducted with or within a living body.
Gene therapy refers to a process that is carried out to alter the genetic make up of an individual with the intent of treating a disease.
In ex vivo gene therapy, the intended cells are removed from the patient's body and the gene therapy is applied to the cells before they are put back in the patient's body. But with in vivo gene therapy, the gene therapy is applied directly on the intended cells while its on the patient's body.
According to the signal detection theory, the detection of stimuli involves decision and sensory processes.
T or F
Answer:
True!
Explanation:
This work is soo easy for me , It is True my teacher just checked all my answers were correct :) I hope you get a good grade.
Answer:
True is correct just took the topic review
Explanation:
3 C6H1206
How many molecules of Glucose are shown in
the formula above?
Answer:
they are three molecules of glucose
What is the main function of your kidneys? *
a. secrete excess water as sweat
b. protect against pathogens
c. convert waste products into urine
d. facilitate gas exchange
Answer:
i think convert waste products into urine
Answer:
b
Explanation:
covert waste product into urine
Which statement correctly describes the number of chromosomes in body cells and gametes?
Answer:
its A
Explanation:
Body cells and gametes are both diploid correctly describes the number of chromosomes in body cells and gametes.
What are chromosomes?A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones.
Chromosomes are threadlike structures made of protein and a single molecule of DNA that serve to carry the genomic information from cell to cell. In plants and animals (including humans), chromosomes reside in the nucleus of cells.
One molecule of DNA and one protein make up one chromosome. Chromosomes are different sizes, and proteins called histones allow them to pack up small enough to fit in a nucleus.
Learn more about chromosomes:
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Describe how sucrase catalyses the breakdown of sucrose
What is the difference between food chains and food webs? Food webs show the flow of energy from producers to consumers, and food chains show the flow of energy from consumers to producers. Food chains show a single path of energy in an ecosystem, and food webs show overlapping pathways of energy in that ecosystem. About ten percent of the energy is passed on to the next trophic level in food webs, but in food chains, about ninety percent is passed on to the next trophic level. Heat is lost when energy is passed on to the next trophic level in food chains, but in food webs, heat is not lost when energy is passed on to the next trophic level.
Answer:
Food chains show a single path of energy in an ecosystem, and food webs show overlapping pathways of energy in that ecosystem.
Explanation:
Unlike food chains, food webs show more detailed information about the different animals in an ecosystem and show multiple energy transfers to different animals from the same sources.
By looking at these examples, you will notice a dramatic difference in detail:
Food chains show a single path of energy in an ecosystem, and food webs show overlapping pathways of energy in that ecosystem.
What is food chain?Food chain shows the relationship between organisms by the food they eat.
What is food web?A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
Difference between food chain and food webFood webs show interconnection of food chains about the different animals in an ecosystem and different energy transfer processes.
Thus, food chains show a single path of energy in an ecosystem, and food webs show overlapping pathways of energy in that ecosystem.
Learn more about food chains and food web here: https://brainly.com/question/2179
A plant cuticle is made of waxes and covers plant leaves. The wax is a type of lipid that has hydrophobic characteristics. How does the structure of cuticle wax benefit the plant?
A.It forms a waterproof coating to prevent water from entering or existing the leaves
B.It creates a substance that attracts insects to feed on the leaves
C.it release extra proteins from the leaves to the rest of the plant during warm months
D.It stores sugars in the leaves that can be used for photosynthesis
Answer:
A
Explanation:
Which of the following statements is true for all cells?
Answer:
They are all living
Explanation:
No cell is not alive unless it's dead
What is the connection between cancer and cell replication (explained in 1 paragraph)?
In homologous recombination in E. coli, the protein that moves along a double-stranded DNA, unwinding the strands ahead of it and degrading them, is:
Answer:
RecBCD enzyme
Explanation:
RecBCD is an enzyme of the E. coli bacterium that initiates recombinational repair from potentially lethal double strand breaks in DNA which may result from ionizing radiation, replication errors, endonuclease, oxidative damage, and a host of other factors. The RecBCD enzyme is both a helicase that unwinds, or separates the strands of DNA, and a nuclease that makes single-stranded nicks in DNA.
What happens if the moon has too much of an acceleration from the gravitational interaction with the sun
I WILL GIVE A BRAINIEST ANSWER !!
Which phrase describes a metamorphic rock?
- formed from a volcano
-was once buried underground
-formed from evaporating water
-contains minerals
How does a virus keep evolving? Explain.
Answer:it keeps evolving by people hangingout with others or near people that have the virus.
Explanation:
A girl rides her scooter 5m North, 7m East, 5m South, and then 7m west. What is her displacement?
Answer:
She is in the same place as she started. But she did move 28 units in total.
Changes in the number of chromosomes or the structure of a chromosome are called _____ mutations.
Answer:
Chromosomal mutations