Which statement is true concerning light? Frequency and wavelength mean the same thing As frequency goes up, wavelength does down Light has frequency but no wavelength Light has wavelength but no frequency

QUESTION POSTED AT 06/12/2019 - 09:14 AM

Answered by admin AT 06/12/2019 - 09:14 AM

Freq. and wavelength are NOT the same. When one goes up, the other goes down -thats TRUE Light does behave like a wave so it has both freq and wavelength
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Related questions

These plants lack flowers and seeds. Which of the following is described by this statement? Angiosperms Ferns and horsetails Gymnosperms

Angiosperms are literally known as "flowering plants" and include all the flowering plants. Gymnosperms are seed-producing plants, such as trees that don't have flowers. So that leaves you with ferns and horsetails. Ferns have spores on them that they use to reproduce with, and they do not have flowers.

ANSWERED AT 20/01/2020 - 01:19 PM


QUESTION POSTED AT 20/01/2020 - 01:19 PM

#1. Why is DNA called the blueprint for life? A. It has the code to make carbohydrates. B. It stands for Director of New Activities. C. It has directions for making membranes. D. It contains the genetic material for living things on earth. #2. Which of these is a major function of RNA? A.to make ribosomes/ B.to transport genetic information/ C.to make nucleic acids/ D.to direct activities in the cell #3.Why is the sequence of DNA important? A.It is used to create copies of cells./ B.It makes sure there will be no mistakes in the information. C.It determines protein structure./ D.It is needed to build new kinds of organisms.

#1: Why is deoxyribonucleic acid (DNA) called the blueprint of life? the answer is D: it contains the genetic material for living things on earth.
#2: RNA transports genetic information, so I'm 98% sure it would be B
#3: The sequence of DNA is important because if the proteins were lined up incorrectly it would cause a genetic mutation, which can be bad. So I think it would be B.

ANSWERED AT 20/01/2020 - 01:14 PM


QUESTION POSTED AT 20/01/2020 - 01:14 PM

Which of the following holds true for energy coupling? Energy is released in an exergonic reaction./ Energy is transferred from an exergonic process to an endergonic one. / Energy is consumed in an endergonic reaction.

The answer is energy is transferred from an exergonic process to an endergonic one. That is what energy coupling is. The exergonic process will release free energy and this free energy will be absorbed by the endergonic process. It can also drive the endergonic process. 

ANSWERED AT 20/01/2020 - 01:14 PM


QUESTION POSTED AT 20/01/2020 - 01:14 PM

Which statement explains the difference between multiple alleles and polygenic inheritance? A) Multiple allele means more than one gene contributes to the phenotype and polygenic inheritance means more than two forms of the same gene in the population. B) Multiple allele means more than two forms of the same gene in the population and polygenic inheritance means more than one gene contributes to the phenotype of a trait. C)Multiple allele means more than two forms of different genes in the population and polygenic inheritance means one gene contributes to many phenotypic characters.

 The answer is B) Multiple allele means more than two forms of the same gene in the population and polygenic inheritance means more than one gene contributes to the phenotype of a trait.

An allele is one of two or more alternative forms of a gene. So, multiple allele means more than two forms of the same gene in the population. 
Polygenic inheritance is responsible for traits that are controlled by two or more genes. The name itself explains the meaning: poly means many, so literally it means many genes.

ANSWERED AT 20/01/2020 - 01:13 PM


QUESTION POSTED AT 20/01/2020 - 01:13 PM

Which of these statements is true about biogeochemical cycles? A) in biogeochemical cycles, nutrients are not synthesized anew but are recycled in the biosphere B) in biogeochemical cycles, nutrients are not recycled in the biosphere but are synthesized anew C) In biogeochemical cycles, nutrients are not recycled in the biosphere but are depleted.

The statement that is true about biogeochemical cycles is  : A. In biogeochemical cycles, nutrients are not synthesized anew but are recycled in the biosphere.
For example, the excretion that we used after consuming nutrients will be used by soil to fertilize itself

hope this helps

ANSWERED AT 20/01/2020 - 01:06 PM


QUESTION POSTED AT 20/01/2020 - 01:06 PM

Dimpled chin and free earlobes are two dominant characters in humans. Smooth chin and attached earlobes are recessive characters. A person has the genotype Ddff. Which of the following statements is correct with respect to this genotype? The person is heterozygous for the first character and homozygous for the second./ The person is homozygous for the first character and heterozygous for the second. /The person is homozygous for both characters.

The person is heterozygous for the first character and homozygous for the second and this statement among the statements given in the question is correct with respect to this genotype. The correct option among all the options that are given in the question is the first option. I hope the answer helps you.

ANSWERED AT 20/01/2020 - 01:01 PM


QUESTION POSTED AT 20/01/2020 - 01:01 PM

Channel proteins and carrier proteins are both a type of transport protein. true or false

 True Channel Proteins are a type of protein that acts as a tunnel for molecules or ions

ANSWERED AT 20/01/2020 - 12:46 PM


QUESTION POSTED AT 20/01/2020 - 12:46 PM

At the end of meiosis II, four daughter cells are produced. true or false

Meiosis ll, splits the sister chromatids apart. this process results in four daughter cells.

ANSWERED AT 20/01/2020 - 12:33 PM


QUESTION POSTED AT 20/01/2020 - 12:33 PM

Which type of stars is very hot but gives off little light?

Answer:

Dwarf

Explanation:

ANSWERED AT 20/01/2020 - 12:26 PM


QUESTION POSTED AT 20/01/2020 - 12:26 PM

Periosteum is soft connective tissue. True False

True.........................

ANSWERED AT 20/01/2020 - 12:20 PM


QUESTION POSTED AT 20/01/2020 - 12:20 PM

Changes in allele frequency are always driven by natural selection. True or False?

False................

ANSWERED AT 20/01/2020 - 12:20 PM


QUESTION POSTED AT 20/01/2020 - 12:20 PM

Changes in allelic frequency are always driven by natural selection.

The correct answer is false. Allele frequencies can all be changed through other processes such as Genetic Drift or a sudden isolation of a species.

ANSWERED AT 20/01/2020 - 12:19 PM


QUESTION POSTED AT 20/01/2020 - 12:19 PM

The excretory system rids your body of solid waste. True False

False the digestive system does

ANSWERED AT 20/01/2020 - 12:16 PM


QUESTION POSTED AT 20/01/2020 - 12:16 PM

Which activity would be within the field of biology? a. measuring the amount of time it takes light to reach earth from the distant star b. doing research how plastic affect the environment c. study on the manufacture of plastic bags. d. studying the mechanics of how ships release waste

(B) Doing research how plastic affect the environment is the activity that would be within the field of Biology.
Biology is the study of life. Environment includes the surroundings and the lives involved on it. Therefore, plastic affect both the surrounding and the lives of every living creature.

ANSWERED AT 20/01/2020 - 12:15 PM


QUESTION POSTED AT 20/01/2020 - 12:15 PM

Which of the following statements about agricultural societies is true? a. Agricultural societies did not pollute the environment. b. Agricultural societies impacted the environment less than hunter-gatherer societies. c. Agricultural societies had a higher population than hunter-gatherer societies. d. Agricultural societies impacted the environment more than industrial societies.

The one that is true about agricultural societies is : C. Agricultural societies had a higher population than hunter-gatherer societies

Hunter gatherer societies haven't learn to produce their own food, so they tend to keep moving in a significantly smaller group than the agricultural society to get enough foods for their groups

hope this helps

ANSWERED AT 20/01/2020 - 12:08 PM


QUESTION POSTED AT 20/01/2020 - 12:08 PM

Which of these sentences is true about the virus? a. It is unicellular in nature and it reproduces asexually. b. It can reproduce only within other cells. c. Its hereditary material is in the form of a capsid.

The sentence which is true or a fact about the virus is the sentence in letter B. Viruses can reproduce only within other cells. Viruses are intracellular obligate parasites they can not replicate or express the genes with out living host. 
viruses are acellular so they have to rely on host cellular machinery for reproduction. 
viruses doesnot contain any enzymes for reproduction

ANSWERED AT 20/01/2020 - 12:08 PM


QUESTION POSTED AT 20/01/2020 - 12:08 PM

If the voltage applied to a wire increases, then its current is not affected. True False

False (if we assume the resistance of the wire remains the same) Current = Voltage / Resistance. Hope i helped man:D

ANSWERED AT 20/01/2020 - 12:06 PM


QUESTION POSTED AT 20/01/2020 - 12:06 PM

What would be the first thing you would do if your clothes caught fire while working in a laboratory? A - Call out to your teacher B - Drop and roll on the floor to extinguish the fire C - Run towards a source of water to extinguish the fire

Answer: B - Drop and roll on the floor to extinguish the fire

Explanation:

A fire can be a natural hazard which can erupt in a laboratory due to chemical reaction or due to the uncontrolled burning of a fuel. Proper safety precautions should be taken to handle incidences of fire in a laboratory.

Among the options given,  B - Drop and roll on the floor to extinguish the fire is the correct option because if the person drops and rolls over the floor the fire extinguishes with pressure of the body applied on the floor.

Call out to your teacher will consume the time this will lead to more damage cause to the skin or clothes.

Run towards a source of water to extinguish the fire, as we know that water will provide oxygen to fire, because of this the fire will erupt more severly when receives the oxygen.

ANSWERED AT 20/01/2020 - 12:04 PM


QUESTION POSTED AT 20/01/2020 - 12:04 PM

Our heart is made up of three chambers, called the atria and the venucia. [True] or [False]

Answer:

false

Explanation:

ANSWERED AT 20/01/2020 - 12:04 PM


QUESTION POSTED AT 20/01/2020 - 12:04 PM

32P can be used to make any nucleotide (A, C, G, or T) radioactive. Which of the following explains why this is true?

The answer is: All nucleotides have a phosphorus atom that can be replaced with 32P.

DNA building blocks are nucleotides. Nucleotides contain a nitrogenous base, a five-carbon sugar, and, at least, one phosphate group. Exactly that phosphate group in the nucleotide has the phosphorus atom. Therefore, the phosphorus atom in the nucleotide can be replaced with radioactive phosphorus-32 (32P). This replacement has a wide use in labeling nucleic acids and thereby visualizing the target molecule.

ANSWERED AT 20/01/2020 - 12:00 PM


QUESTION POSTED AT 20/01/2020 - 12:00 PM

Some important minerals are stored in the bones. [True] or [False]

True.........................

ANSWERED AT 20/01/2020 - 11:59 AM


QUESTION POSTED AT 20/01/2020 - 11:59 AM

A biologist measures the allele frequencies of pea plants in a very controled environment. the plants can either have a dominant tall allele (T) or a recessive short allele (t). which of the following is a reason that this population is not at hardy weinberg equlibrium

The answer is One pea plant mutates to have a new allele.

Some of the conditions that must be met for a population or an allele to be in Hardy-Weinberg equilibrium are:

1. The population must be very large.

2. There must be no migration and population must be isolated.

3. There must be no mutations.

4. There must be random mating, which means there are no mating preferences.


So, if there are mutations in the population, the population will not be at Hardy-Weinberg equilibrium.

ANSWERED AT 20/01/2020 - 11:54 AM


QUESTION POSTED AT 20/01/2020 - 11:54 AM

People are unique among all creatures. True or False

People are unique among all creatures.
TRUE

ANSWERED AT 20/01/2020 - 11:53 AM


QUESTION POSTED AT 20/01/2020 - 11:53 AM

Too much cholesterol is a bad thing, but your body needs some cholesterol to work. What is the function of cholesterol in your body?

The function of cholesterol in your body is for production of hormones (like estrogen, testosterone, aldosterone, progesterone and cortisone), vitamin D, and bile (acids that aid in digestion and vitamin consumption). It also supports the cell membrane and its maintenance.

ANSWERED AT 20/01/2020 - 11:52 AM


QUESTION POSTED AT 20/01/2020 - 11:52 AM

In genetic drift, the allele frequencies in a gene pool change because of a. mutations b. chance c. natural selection d. genetic equilibrium

In genetic drift,the allele frequencies in a gene pool change because of chance. Genetic drift is the variation of the allele and relative frequencies of different genotypes in a very small community or population, and focusing on the particular genes which did not produce or just happened to be gone. 

ANSWERED AT 20/01/2020 - 11:52 AM


QUESTION POSTED AT 20/01/2020 - 11:52 AM

What would be the best microscope to view living single-celled organisms in a sample of pond water? a. Transmission electron microscope b. Scanning electron microscope c. Compound light microscope d. Dissecting microscope

C) Compound light microscope would be the best microscope to view living single-celled organisms in a sample of pond water.

ANSWERED AT 20/01/2020 - 11:48 AM


QUESTION POSTED AT 20/01/2020 - 11:48 AM

Which statement is a reason that modern human populations never reach Hardy-Weinberg equilibrium? (A)Evolution rarely occurs in human populations. (B)Mating is random in human populations. (C)Humans live in small, isolated groups. (D)Humans regularly travel all over the globe.

The statement that is a reason why modern human populations never reach Hardy-Weinberg equilibrium is because D) humans regularly travel all over the globe. 

ANSWERED AT 20/01/2020 - 11:47 AM


QUESTION POSTED AT 20/01/2020 - 11:47 AM