Homework Help: Science: Biology

Recent Homework Questions About Biology

Biology
HELP PLEASE!!!! Explain how sexual reproduction increases genetic diversity in many species of plants and animals, make sure to include the importance and function of gametes.

Biology
A chemical known as a fertex affects external fertilization of sea urchin eggs. An experiment was set up using three tanks to investigate the effect of fertex. Each tank had a different concentration of fertex: 1%, 2%, and 3%. Ten sea urchin eggs and 2mL of sea urchin sperm ...

Biology
A chemical known as a fertex affects external fertilization of sea urchin eggs. An experiment was set up using three tanks to investigate the effect of fertex. Each tank had a different concentration of fertex: 1%, 2%, and 3%. Ten sea urchin eggs and 2mL of sea urchin sperm ...

biology
Answers for Biology A unit one test 26 questions

Biology
How can the genetics of a human be studied?

biology
Why do you think the protocol does not say to dissolve compounds directly in 1 liter of water?

Biology
When dental work is to be done, the gums and nerves in the teeth are anethetized by injection of lidocaine. This drug blocks Na+ channels in the membrane of the sensory cells. This drug is an effective local anesthetic because the A. Sensory cell membrane do not repolarize ...

Biology
How many NADH and FADH2 Molecules are produced in the Krebs cycle for each glucose molecule? My answer: 2 This is correct ?

Biology
The reproductive system of a male mammal is made up of... A. Claspers, prostrate gland, sperm duct and vas deference. B. Festis, prostrate gland, sperm duct and vas deferens. C. Oviduct, urethra, testis, and sperm duct. D. Testis, uterus, prostrate gland and sperm duct.

Science (Biology)
The disease bullous pemphigoid results in the destruction of proteins within the basement membrane that hold the epidermis and dermis together. How would this likely affect the epidermis?

Biology
Why do we need grass for hay infusion?

Biology
Why do scientists observe microorganisms?

Biology
Which of the following best describes the relationship between science and society? A. Science influences society but society does not influence science.** B. Society influences science but science does not influence society. C. Science influences society and society ...

Biology
How is Paramecium related to Protozoa?

Biology
What is a protein that transports ions across the plasma membrane without requiring energy or changing shape?

Biology
What are the roles of hydrogen peroxide, oxygen, hydrogen, and catalase in the following chemical reaction? catalase 2H2O2 > O2 + 2H2O A. Catalase is an enzyme, O2 and H2O are substrates, and H2O2 is a reactant. B. Catalase is a substrate, O2 and H2O are substrates, and ...

Language Arts
1. Which of the following would most likely appear in a feature article, but not in a news article, about Hurricane Katrina? (1 point) A) a map showing meteorological data about the storm, such as total rainfall and top wind speeds B) a sidebar containing a brief interview ...

Biology
Is opportunistic bacteria a bad bacteria?

Biology
What are pathogenic and opportunistic bacteria?

Biology
Can someone check my answers please? 1. Which of the following is not a characteristic of life? A. Maintains homeostasis B. Composed of cells C. Composed of atoms*** D. Carries out metabolism 2. Which of the following represents a correct sequence of levels within the ...

English
I wrote this sentences. Could you check them. Thanks 1. If you were interested, you could take another course. 2. If I were you, I’d study Norse tales. 3. If he really wanted to go into science, he would take biology and chemistry. 4. I wouldn’t have suggested he take ...

Biology
Is a cell wall and nucleus organelles?

Biology
Colour blindness is more likely to occur in males than females because?

Biology
YyRR is crossed with yyRR. The progeny will be?

Biology
The building blocks of protien are called

Biology
1)why dose h20 have such attractive forces? 2) H2o effortless ability to _____ ______ with other matter - what two answers would complete this statement?

Biology
Why is it important for hydrogen bonds to be weak? -i already tried googling it but im still confused

Biology
why does h2o have such attractive forces

Biology
|Question| Living organisms are composed of millions of organic compounds, each having a unique structure. What element is responsible for this huge diversity of molecules? Describe the diversity of structures that can be formed and the properties of this element that allow ...

Biology
Which of the following is NOT a function of a vacuole? a) packaging of materials *** b) transport of materials c) storage of materials d) breakdown of materials

Biology
Why is it important for hydrogen bonds to be weak? -i already tried googling it but im still confused

9th Grade Biology
If you see a word that ends in -ase, it is probably an _________, and if a word ends in -ose it is a __ ____________. There are no answer choices and this is on my homework assignment...

Biology
Which of the following is true of an exergonic chemical reaction? A.Reactants lose mass as products are reformed B.Bonds are broken in reactants and new bonds are formed in products C.No activation energy is required to initiate it D.The energy released is captured by a catalyst

Biology
Which of the following is true of an exergonic chemical reaction? A.Reactants lose mass as products are reformed B.Bonds are broken in reactants and new bonds are formed in products C.No activation energy is required to initiate it D.The energy released is captured by a catalyst

biology
if an ox extracts only 50% of potential energy in grass and out of this if the ox used 40% to build up its body ,then the overall efficiency of grass to become part of ox would be: A)10% C)20% B)15% D)30%

Biology
Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to their functional form...

Biology
Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to their functional form...

Biology
Proteins are manufactured from the "blueprints" found on DNA. After they are translated, they are moved through a system of internal membranes before being distributed throughout the rest of the cell. At some point in this process, they are modified to their functional form...

Biology
Characteristics that biologists use to classify organisms are a. convergent evolution, cladogram, reproductive isolation. b. reproductive isolation, evolutionary history, shared derived characteristics. c. binomial nomenclature, shared derived characteristics, evolutionary ...

Biology
4. Which kingdom of eukaryotes exhibits the broadest range of characteristics? A. Animalia B. Protista C. Plantae D. Eubacteria I'm not sure between A and B I'm leaning more towards A?

Biology
4. Which kingdom of eukaryotes exhibits the broadest range of characteristics? A. Animalia B. Protista C. Plantae D. Eubacteria I'm not sure between A and B I'm leaning more towards A?

Biology
Hello! Which of the following are characteristics of all animals? A.multicellular, haploid cells that divide by mitosis, organisms with organ systems B.multistage zygote development, vertebrates, reproduce sexually C.99 percent invertebrates, heterotrophs, multicellular D.both...

Biology
Hi! I'd love some clarification on this question Which of the following are NOT used to classify kingdoms of organisms? a. complexity of the organism b. invertebrate or vertebrate c. method of obtaining nutrition d. type of cell that makes up the organism I'm thinking B?

Biology
A preventive treatment to help avoid contracting a viral disease that cannot be treated with antibiotics is a A.DNA fingerprint. B.vaccine. C.transfer RNA. D.transgenic human genome.

Biology
Genetic mutations A.Remove the intron from the gene-coding exon. B.change a DNA molecule C.are relatively common D.both A and C

Biology
During translation, the amino acid detaches from the transfer RNA molecule and attaches to the end of a growing protein chain when a. the ribosomal RNA anticodon binds to the messenger RNA codon. b. the transfer RNA anticodon binds to the messenger RNA codon. c. a "stop" codon...

Biology
When errors in nucleotide sequencing occur,? a. DNA polymerase replaces the incorrect nucleotide with the correct nucleotide. b. enzymes dissolve the incorrect nucleotide so DNA polymerase can add the correct one. c. purines replace pyrimidines in the DNA molecule. d. DNA ...

Biology
The structure of DNA is held together by A.purines pairing with pyrimidines B.hydrogen bonds between adenine and thymine C.attraction between cytosine and guanine D.all of the above

Biology
Both sickle -cell anemia and hemophilia A.are cause by genes coded for defective protein. B.are seen in homozygous dominant individuals C.are diseases of the gastrointestinal system D.none of the above

Biology
40. DNA fingerprinting is used in many situations to help identify individuals. Analyze the situation below before answering the questions that follow. A man was attacked and robbed, but remembers nothing of the incident because he fell and hit his head. He has numerous cuts ...

Biology
16. During DNA replication, all of the following steps occur EXCEPT a. enzymes proofread new strands for errors and correct them b. the double helix is unwound by DNA polymerases c. base-pairing rules determine which nucleotide is added to new strands d. each strand of a DNA ...

Biology research paper
I fixed up my research paper and I'd love it if someone could look through it and tell me what they think. Thank you! The majority of people would agree that fossils have been one of the most important parts of our society. They are used to fuel many of our transportation ...

Biology research paper
'We are currently in an energy crisis. After food, fossil fuels are humanity's most important source of energy. These resources take millions of years to make. We are currently using the fuels that were made more than 300 million years ago, before the time of dinosaurs. Fossil...

Maths,physics,biology,english,arabic,chemistry
Calculate the mass of NaOH required to make 500ml of 0.5 M aqueous solution (Molecular mass of NaOH=40)

Biology
Are lysosomes present in a plant cell?

biology
if a rock had a mass of 9.00g, what is the density of the rock?

Biology
What would happen if the gametes forming a zygote is diploid?

Biology
Codominance is a form of inheritance in which two different alleles for a gene are both expressed, and neither allele is dominant over the other. The alleles for type A blood and type B blood are codominant. If a man who is homozygous for type A blood and a woman who is ...

Biology
What would happen during DNA replication if DNA polymerase was not functional

Science (Biology)
I think the answer is (e) but I'm not certain. In Drosophila melanogaster the genes for yellow body colour and white eye colour are linked this means that: a. They can produce only one phenotype b. They cannot separate c. They produce more parental types than recombinant types...

Science , Biology
Are both of osmosis and diffusion movement of high concentration to low concentration? just a deferences of water or molecures?

Biology
I need help finding a scientific journal on either one of these topics and talk about science environment technology and society, how this research contributed. -Genetics -Plants -Evolution -Diversity

college algebra
23. In biology, the function defined by g(x)=5x/2+x gives the growth rate of a population for x units of available food. (Source: Smith, J. Maynard, Models in Ecology, Cambridge University Press.) (a) What amount of food (in appropriate units) would produce a growth rate of 3 ...

biology
The structure of an organism is also called_______ Ventricle Analogy Physiology Morphology

Math
A biology class has 12 boys and 18 girls .what fraction of the class are boys? Solution. 12/30=2/5 Please tell me this correct or not.

biology
Are the DNA template strand and the mRNA sequences similar, or complementary? Are the DNA coding strand and the mRNA sequences similar, or complementary? Are the DNA template and the DNA coding strand sequences similar, or complementary?

Ap Biology
In the case of water, solid water is less dense then liquid water. What is happening at the molecular level? a. Molecules move faster in ice than water. b. Hydrogen bonds break more easily in ice. c. Hydrogen bonds break more easily in water. d. Molecules are stationary in ice...

Biology
what happens to partially digested food after it leaves the stomach, up to the stage where it leaves the small intestine?

English
1. which of the following sentences is grammatically correct? A. The student wrote too slow to finish the exam, but he has always been a slowly writer. B. The student wrote too slow to finish the exam, but he has always been a slow writer. C. The student wrote too slowly to ...

Biology-Genes
red fish-recessive green fish-dominant -Can two red fish mate and have green offspring? Vice Versa?

Biology
1) How can fishing cause expression changes and how can these changes be associated with changes at DNA level? 2) How do changes in gene expression hell fjsh adapt to different selective pressure? (I have a presentation about this, so it would be very useful if you linked some...

Biology
1) How can fishing cause expression changes and how can these changes be associated with changes at DNA level? 2) How do changes in gene expression hell fjsh adapt to different selective pressure? (I have a presentation about this, so it would be very useful if you linked some...

biology
describe the pathway of blood through the prts of the earthworms circulatory system

Biology
The body at higher temperature but having low amount of heat gives more severe pain of hotness than a body at low temperature but having high amount of heat. Give some examples.

Biology
The evolutionary tendency where nerve cells and sense organs are grouped in the front or anterior part of the animal, the head, is called ___________. A. cephalization B. segmentation C. deuterostome D. coelom my best answer is B is that correct

Biology
To survive as an individual, all animals must maintain homeostasis. Which of the following is NOT a part of homeostasis? A.eliminating wastes from their body B. gathering and responding to information in their environment C. reproduction- to produce viable offspring D. ...

Biology
An example organism of the phylum Porifera is a/an _______. * 1 point A.leech B.sponge C.sea cucumber D.amoeba my best answer is B is that correct

biology
What are the general characteristics of all vertebrates? A. Include several animal phyla. B. Have a backbone or spinal column. C. Lack cephalization. D. Include all chordates. my answer is B is that correct

Biology
Explain why oxygen consumption varies with body weight.?

Biology
The rate of oxygen uptake by gills depends on the surface area, the number, and the thickness of the lamellae across which oxygen must diffuse. What are two ways to increase the rate of oxygen uptake?

Biology
what is the direction of blood flow in relation to the direction of water flow over the gills

Biology
only 2 percent of the oxygen intake in humans is used by respiratory muscles. do you think the percent of oxygen used by respiratory muscles in a fish is higher or lower than this

Biology!!
1. what's a huge difference between the chemical equations for Respiration and Alcoholic fermentation &... What determines whether a facultative organism will go through respiration or fermentation *For the first part of the Question, (I looked it up but I wasn't sure if it's ...

English
1)which of the following sentences is grammatically correct? A. The student wrote too slow to finish the exam, but he has always been a slowly writer. B. The student wrote too slow to finish the exam, but he has always been a slow writer. C. The student wrote too slowly to ...

biology
which of the following statements about enzymes is NOT true? A. enzymes work best at a specified pH B. all enzymes have the same shape as their substrates. C. enzymes are proteins D. the shape of an enzyme allows it to do its job. im pretty sure its A. Am i right?

Biology
Which of the following statements about enzymes is not true? A) Enzymes work best at a specified pH B) All enzymes have the same shape as their substrates. C) Enzymes are proteins. D) The shape of an enzyme allows it to do its job.

Biology
How are proteins, lipids, and polysaccharides similar? A) They contain the same atoms are types of bonds between atoms. B) They are natural polymers composed of repeating monomeric units. C) They are formed during exergonic metabolic reactions in a cell. D) They have ...

Biology
what are goals of science? Choose all that apply. A) to investigate the natural world B) to establish unchanging facts C) to explain natural phenomena D) to make useful predictions based on evidence

Biology
What viruses are common in the Arctic tundra?

Biology
A dichotomous key is used to ___________. ? A. identify dicots, only B. identify organisms C. gain entry to homes by burglars D. determine the meaning of life ' my best answer is B is that correct

Biology
A dichotomous key is used to ___________. ? A. identify dicots, only B. identify organisms C. gain entry to homes by burglars D. determine the meaning of life ' my best answer is D is that correct

biology help quick please!
We learned about many different animal phyla. How do scientists classify animals to determinewhich phyla they belong to? a. Adult Body Plan b. Embryological Development c. Animal Body Sized. d. Both a and b are correct

biology
Compare respiratory systems of the earthworm, frog, and squid, explaining how the specimen breathes and what organs are involved.

Biology
Which of the following statements regarding DNA and RNA is true? DNA can melt while RNA cannot. DNA is resistant to alkaline hydrolysis while RNA is not. DNA contains phosphodiester bonds while RNA does not. DNA can form double helices while RNA cannot.

Biology
Which of the following features of the structure of double-stranded DNA is most important in recognition of specific base sequences by most sequence–specific DNA-binding proteins? The greater depth of the minor groove. The arrangement of sequence-specific functional groups ...

Biology
Mrs. Eryth is carrier of the sex-linked hemophilia allele, and Mr. Eryth is normal (as far as blood chemistry goes). A. Draw a Punnet square that shows the theoretical genotypes and phenotypes among their children. B. They actually have 4 male and 4 female children; how many ...

Biology
Heart disorder's that involve tachycardia as a symptom.

Biology
A young woman was at the gym doing great her normal workout. She would spend 45 minutes on the elliptical and then 15 minutes doing weight training. This was the regular routine for her as she did this almost everyday. One day her normal routine turned upside-down. As she ...

Biology
Which of the following is the muscle action that results in exhalation and causes the air pressure inside the lungs to be higher than outside the chest a) Contraction of internal intercostals b) Relaxation of the diaphragm c) Contraction of the diaphragm d) Relaxation of the ...

Biology
Chemicals which control the growth and function of organs are ____ A. chromosomes B. hormones C. glucose D. endocrines

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Homework Help: Science