Answer:
Homosexuality likely reflects the input of a number of genes and environmental factors
Explanation:
Sexual orientation can be defined as the attraction that experiments an individual self-identified with a particular gender (either male or female) to other persons according to their sex, this orientation may be classified into three categories: heterosexual (attraction for people of opposite sex), homosexual (same-sex) and bisexual (either sex). In the last years, the mechanisms involved in sexual orientation have been subject to intense research. In this regard, the main part of the scientific community agrees that sexual orientation is the result of the complex interaction between genetic and environmental factors. This hypothesis is supported by the fact that genes whose expression is associated with particular human behaviors, including sexual orientation, have been recently identified and mapped. Moreover, it has been shown that environmental factors such as, for example, hormone exposure before birth (i.e., during fetal programming) may also determine sexual orientation.
Collections of lymphoid tissues, called MALT, are strategically placed throughout the respiratory, digestive, and genitourinary systems. Which one of these is located at the end of the small intestine?
a) appendix
b) Peyer's patches
c) tonsils
Sickle cell disease provides an example for which principle of molecular genetics? A. A point mutation always causes a significant change in phenotype. B. A point mutation always causes a change to an amino acid sequence, which may affect phenotype. C. A significant change in phenotype may cause a genetic mutation. D. A change to one amino acid in a protein may cause a significant change in phenotype.
Answer:D. A change to one amino acid in a protein may cause a significant change in phenotype.
In order to convert prairie grass to bioethanol, what is needed after breaking down cellulose to simple sugars?
A. fermentation
B. cellulase
C. amylase
D. protease
Answer:
fermentation
Explanation:
When you ferment there will be chemical break down of the substance
Which of these conclusions is most likely correct about the two pairs of atoms?
Answer:
D. Carbon and oxygen form covalent bonds but sodium and chlorine form ionic bonds
Explanation:
Chemical bonds form between the atoms of elements. The types of chemical bondings that form are: covalent bond, ionic bond and more. Covalent bonds are bonds formed when atoms share valence electrons rather than transfer it. The shared bonding is in such a way that the outermost shell of both atoms are filled. This is the case of carbon and oxygen atoms in the diagram.
On the other hand, ionic bonding involves the transfer of electrons from one atom to another in order to form electrically charged ions that are bound to one another. This is the case of sodium atom, which has one valence electron in its outermost shell and transfers it to chlorine atom, which has seven electrons in its outermost shell. The sodium atom becomes a positively charged ion (+1) while the chlorine atom becomes negatively charged (-1).
The countercurrent multiplier is a system by which the:______.
a. nephron loop multiplies the concentration of salts in the interstitial fluid of the kidney medulla.
b. nephron loop dilutes the concentration of solutes in the tubular fluid at its hairpin turn.
c. vasa recta secretes multiple amounts of metabolic wastes against their concentration gradient.
d. vasa recta becomes more concentrated with nitrogenous wastes than the urine.
Answer: Option A.
nephron loop multiplies the concentration of salts in the interstitial fluid of the kidney medulla.
Explanation:
countercurrent multiplier is a system that utilize energy that create osmotic gradients and enable reabsorption of water thereby increase concentration of urine. The countercurrent multiplier uses electrolyte pumps there by making the nephron loop increase the concentration of salts in the interstitial fluid of the kidney medulla because it allows the nephron to reabsorb alot of water and and increase the concentration of urine for excretion while at the same time using as little energy as possible.
Please Help!!!! Mass extinctions have occurred repeatedly during the course of Earth's history. One of these events occurred at the end of the Cretaceous Period, during which the dinosaurs became extinct. Mammals flourished after the dinosaurs were gone. This led to a variety of genetically diverse species. Why did the mammals suddenly start diverging into different species after the dinosaurs were gone? a. Most of the predators were gone and suddenly niches were available so almost all the offspring were likely to survive and reproduce. b. Once the dinosaurs were gone, the mammals started having larger numbers of offspring in each litter to fill the empty niches. c. The mammals chose to move into the vacant niches the dinosaurs had occupied and change their body shapes to suit these new environments. d. Mammals began mutating rapidly once the dinosaurs died out and were able to create new species based on the mutations.
Answer:
Most of the predators were gone and suddenly niches were available so almost all the offspring were likely to survive and reproduce
Explanation:
Most of the predators were gone and suddenly niches were available so almost all the offspring were likely to survive and reproduce.
What is the maximum likely to take place if predators are brought to an environment without acknowledged predators?With no predators to manipulate the populace and modify feeding behavior, the prey species quickly degrade and over-run their habitat. As food becomes scarce, the population turns unwell and malnourished, and could both flow or crash.
What takes place whilst a keystone species is removed from an ecosystem?Keystone species have low practical redundancy. which means if the species were to vanish from the environment, no other species might be capable of filling its ecological niche. The atmosphere could be pressured to considerably change, permitting new and possibly invasive species to populate the habitat.
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How are the alleles for sex-linked traits inherited? They are passed from the Y chromosome in parents to the X chromosome in offspring. They are passed from the X chromosome in parents to the XY chromosome in offspring. They are passed from parents to offspring on the X and Y chromosomes. They are passed from any chromosome in the parents to the X or Y chromosome in the offspring.
Answer:
they are passed from parent to offspring on the X and Y chromosomes
i just took this test on ed :D
Alleles for sex-linked traits are inherited in such a way that they are passed from parents to offspring on the X and Y chromosomes.
Generally, sex-linked traits are traits or genes that are found on the sex chromosomes only. In humans, females have XX sex chromosomes while males have XY sex chromosomes.
Thus, X-linked traits are passed from parents to offspring via the X chromosomes only. Since both males and females have X chromosomes, it means both genders can have X-linked traits.Y-linked traits are passed from parents to offspring via the Y chromosomes only. Since only males have Y-chromosomes, it means that only the male gender can have Y-linked traits.More on sex-linked traits can be found here: https://brainly.com/question/1381309
Explain Hertzspeung-Russell diagram relationship to stars life cycles
Which activity does a local health department perform when providing health and environmental services?
Answer:
Explanation:
Local health department links up patient with adequate health care needed especially area where good health facilities is reduces and cannot be access, they prevent spread of disease by given immunizations.
They also help in avoiding spread of diseases and infections by working with other health agencies to create awareness.
In the environment, some of them ensure access to to good and clean water, they develop plans when emergency cases arises and during disaster.
Answer:
C
Explanation:
The local health departments make sure that the community's health is thoroughly assessed, thus, it is their role to oversee the day-to-day health issues in a country. For example, if there's an infectious disease, they prevent its spread by mandating some policies or protocols that people should follow. It is also their duty to respond to emergency situations that affect the health of the local people.
_________is severe pain and constriction about the heart, usually radiating to the left shoulder and down the left arm and creating the feeling of pressure in the anterior chest.
Answer:
Heart attack
Explanation:
Heart attack is the death of a part of heart muscles and severe pain that causes heart constriction having pain in the chest which spread to the left shoulder and down the arm thereby causing the feeling of pressure in the chest.
This is caused when a blood clots blocks blood flow to the heart thereby leading makes the tissue to loss oxygen and die.
The symptom of heart attack are;
pain in the chest, neck, back or arms, fatigue, lightheadedness, abnormal heartbeat and anxiety, nausea.
Treatment ranges from surgery, medication , rehabilitation e.t.c.
Every animal has a distinct body plan.
Which of these animals has a radially symmetrical
body plan?
Answer:
phyla Ctenophora (comb jellies) and Cnidaria (corals, sea anemones, and other jellies).
Explanation:
Hope it helps.
Answer:
I didn't mean to comment this
Explanation:
How does an amoeba reproduce?
Answer:An amoeba uses asexual reproduction to reproduce using a process of binary fission.
Answer:
Most amoebas reproduce aesexually through mitosis. However, some are capable of reproducing meiotically (sexual reproduction)
Explanation:
Which enzyme would be needed first to convert most plant biomass to ethanol? A. Protease B. Amylase C. Cellulase D. Lipase
Answer:
b
Explanation:
A critical biotic factor in Yellowstone National Park is
A. high elevation
B. high temperatures in the summer
C.population of wolves
form
D. proximity to water
Answer:
A
Explanation:
In your lab you are studying the genome of venomous rattlesnakes to find the gene which codes for their venom glands. You have two
rattlesnakes, one rattlesnake has a mutation but can still produce venom. You compare his DNA to a normal rattlesnake. What type of
mutation has occurred?
Normal: AATCGCTACGCACGTCAG
Mutated: TATCGCTACGCACGTCAG
A. Deletion Mutation
B. Nonsense mutation
C. Silent Mutation
D. Missense mutation
Which of the following is an example of succession in an ocean ecosystem?
Answer:
hydroseres
Explanation:
and for land xeroseres
Which of the following is NOT a frameshift mutation?
A. Deletion
B. Insertion
C. None of these
D. Inversion
Answer:
Inversion
Explanation:
The frameshift mutations are -Base Substitutions
-Deletions
-Insertions
HOPE IT HELPS :)
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The type of mutation that is not a type of frame-shift mutation is inversion.
FRAME-SHIFT MUTATION:
A frame-shift mutation is a kind of mutation that causes the manner in which a nucleic acid sequence is read in the genetic code. Frame-shift mutation can occur via two major means as follows: deletion and insertion. Deletion mutation occurs when a nucleotide base is removed from the sequence while insertion mutation occurs when a nucleotide base is added to the sequence. Deletion and insertion causes the sequence of nucleotides in DNA to be shifted. Therefore, the type of mutation that is not a type of frame-shift mutation is inversion.Learn more at: https://brainly.com/question/15192321?referrer=searchResults
Four importance of farm record
Explanations.
Farming record is a document that is used
to keep account different activities,event and materials regarding the farming records.
Which bone is found in the arm?
A. Sternum
B. Cranium
C. Patella
D. Ulna
Answer:
Your answer is D : Ulna
it is 100% correct .
The bone ulna is found in the arm. Therefore, option (D) is correct.
What are the functions of ulna?The longer of your forearm's two bones is the ulna. It makes it easier to move your hand, arm, and wrist. Numerous vital muscles, tendons, ligaments, and blood vessels are also supported by your ulna.
The ulna frames the skeleton of the average piece of the lower arm and is a long bone, comprising of an extended proximal end, a shaft and a head at the distal end.
The ulna is the average bone of the lower arm and the more extended of the two equal lower arm bones. The ulna, like the radius, is made up of three main parts: a shaft, distal end, and proximal end. The distal humerus and the head of the radius are articulated at the proximal end.
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How are tropical rain forests and temperate forests different?
A. Rain forests have more biodiversity.
B. Rain forests have more seasonal changes.
C. Rain forests are less productive.
D. Rain forests have fewer species.
Answer:
A
Explanation:
Tropical rain forests and temperate forests different because rain forests have more biodiversity. The correct option is A.
What is the difference?Tropical rain forests have a much greater variety of species, from plants to animals, than temperate forests. Temperate forests have a lower biodiversity because they have fewer species of trees and less variation in temperature and rainfall throughout the year.
Additionally, tropical rain forests have a much higher productivity level than temperate forests due to the constant sunlight and warm temperatures.
Tropical rain forests have a significantly higher number of species and greater overall biodiversity compared to temperate forests. This is due to factors such as a more stable climate, high levels of rainfall, and abundant sunlight, which support a wide variety of plant and animal life.
Therefore, the correct option is A.
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Name the important endocrine glands present in our body
Answer:
The hypothalamus, pituitary gland, and pineal gland are in your brain. The thyroid and parathyroid glands are in your neck. The thymus is between your lungs, the adrenals are on top of your kidneys, and the pancreas is behind your stomach.
Explanation:
Hope this helps.
The endocrine system is made up of the endocrine glands that secrete hormones. Although there are eight major endocrine glands scattered throughout the body, they are still considered to be one system because they have similar functions, similar mechanisms of influence, and many important interrelationships.
These include...
Hypothalamus.
Pineal Gland.
Pituitary Gland.
Thyroid.
Parathyroid.
Thymus.
Adrenal.
Pancreas.
Which statement about this family’s pedigree is correct? Marco carried the gene for color blindness, but Lauren did not. Lauren carried the gene for color blindness, but Marco did not. Marco and Lauren both carried genes for color blindness. Frank and Caleb both carried genes for color blindness.
Answer:
They face vary of things such as asexual reproduction
Explanation:
Answer:
its a
Explanation:
trust
PLEASE HELP! An original dna strand has the following base sequence: taggtaact What base sequence would be produced through dna replication? A B C D
The correct answer is D. ATCCATTGA
Explanation:
In DNA, there are four nucleobases: guanine (G), thymine (T), adenine (A), and cytosine (C). Additionally, these bases form pairs as guanine aligns with cytosine, and adenine aligns with thymine. This base pairing principle is essential in replication because complementary bases are required to create a new strand or replicate DNA.
According to this, if the sequence is TAGGTAACT, the complementary sequence is ATCCATTGA because, in this way, each base matches with the complementary base.
T (Thymine) is paired with A (Adenine)
A (Adenine) is paired with T (Thymine)
G (Guanine) is paired with C (Cytosine)
G (Guanine) is paired with C (Cytosine)
T (Thymine) is paired with A (Adenine)
A (Adenine) is paired with T (Thymine)
A (Adenine) is paired with T (Thymine)
C (Cytosine) is paired with G (Guanine)
T (Thymine) is paired with A (Adenine)
as a body cell grows larger, the ratio of _____ to volume____
as the body cell grows larger , the ratio of the cells gets smaller to volume of the surface area
Which explanation provides support for continental drift theory? O Dinosaurs lived on many continents. Coal fields match up across continents. Tropical plant fossils were found in warm areas. Similar rock types are found across continents.
Answer:
Similar rock types are found across continents
Explanation:
Can I have brainliest?
Similar composition of rocks are present across continents that support the theory of continental drift.
Similar rock types are found across continents is the evidence that support the continental drift theory because at the boundaries of two continent there must be similar type of rock present. Scientist Alfred Wegener presented Continental drift theory in the early 20th century.
Wegener noticed similarities between two continents when he pieced together maps of Africa and South America. He noticed that mountain ranges present on both continents line up to each other which means they are made of similar type of rock so we can conclude that similar types of rock are present across continents.
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A woman consumes 500 grams of carbohydrate, 30 grams of protein, and 75 grams of fat in one day. How many total kcalories has she taken in, and how many and what percentage of kcalories are from carbohydrate, protein, and fat?
A. Total kcalories:
B. Percentage of kcalories from carbohydrate:
C. Percentage of kcalories from protein:
D. Percentage of kcalories from fat:
Answer and Explanation:
The computation is shown below:
A. For Total k. calories
= (Number of grams in carbohydrates × 1 gm of carbohydrates) + (Number of grams in protein × 1 gm of proteins) + (number of grams in fat × 1 gm in fat)
= (500 × 4) + (30 × 4) + (75 × 9)
= 2000 + 120 + 675
= 2795 k. calories
b. As we know that
1 gm of carbohydrates = 4 k. calories
So, for 500 grams it would be
= 500 × 4
= 2000 k. calories
Now the percentage is
= Total grams in carbohydrates ÷ Total kcalories
= 2000 ÷ 2795
= 0.72
= 72%
C. As we know that
1 gm of proteins = 4 k. calories
So, for 40 grams, it would be
30 × 4 = 120 k. calories
Now the percentage is
= Total grams in protein ÷ Total kcalories
= 120 ÷ 2795
= 0.043
= 4.3%
D. As we know that
1 gm of fat = 9 k. calories
So for 75 grams, it would be
75 × 4 = 200 k. calories
So, the percentage is
= Total grams in fat ÷ Total kcalories
= 200 ÷ 2795
= 0.072
= 7.2%
Which of the following is a primary function of carbohydrates?
Choose ONE answer:
A. Acting as a long-term energy source.
B. Speeding up chemical reactions.
C. Storing genetic information.
D. Providing short-term energy storage.
Answer: For me providing short - term energy storage is C so whatever providing short - term energy storage is on yours that's the correct answer. :D have a nice day.
Explanation: Carbohydrates are the main energy source of cells.
They provide a quick energy supply for all types of cellular activities.
The correct answer is
Providing short-term energy storage
The correct answer is option D. Providing short-term energy storage.
What Do Carbohydrates Do to Your Body?Carbohydrates are the main source of energy for your body: they help fuel your brain, kidneys, myocardium, and central nervous system. For example, fiber is a carbohydrate that aids digestion gives you a feeling of fullness, and lowers blood cholesterol levels.
Carbohydrate Function
Energy supply and blood sugar regulation.Gentle use of protein to generate energy.Degradation of fatty acids and prevention of ketosis.Biological recognition process.flavors and sweeteners.fiber.Learn more about carbohydrates here: https://brainly.com/question/336775
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Anaerobic respiration is used in conditions that: A. require nitrogen. B. are depleted of glucose. C. have too much oxygen. D. are depleted of oxygen.
Answer:
D. Are depleted of Oxygen
Explanation:
Anaerobic respiration occurs when the amount of oxygen available is too low to support the process of aerobic respiration
Anaerobic respiration is used in conditions that are depleted of oxygen. The correct option is D.
What is anaerobic respiration?Anaerobic respiration is the one that does not need oxygen to perform respiration. The process includes the breakdown of Glucose into ethyl alcohol, carbon dioxide, and energy in the absence of oxygen. It occurs only in the cytoplasm.
Certain bacteria and Archean perform anaerobic respiration because they are present in the region where oxygen is not present, in extreme conditions.
Many chemical processes are also done in the absence of oxygen. Like lactic acid fermentation, decomposition, and alcoholic fermentation. When the high-intensity workout is done, the body performs anaerobic respiration.
Thus, The correct option is D. are depleted of oxygen.
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PLEASE ANSWER
What roles do polysaccharides play in living things?
storing fat and building proteins
storing sugar and providing structure
storing fat and providing structure
storing sugar and storing fat
Answer:
Option B
Explanation:
Polysaccharides play the role of storing sugar and providing structures in living organisms.
Polysaccharides are carbohydrates that give 10 to thousands of monosaccharide units on hydrolysis.
For Example, Starch and Cellulose
Some individuals can be heterozygous for a particular mutation.This means that one of their chromosomes is normal and the other is mutated in some way. Approximately ___ of the gametes produced by an individual heterozygous for a deletion will be non viable.
Answer:
1/2 (50%)
Explanation:
During meiosis, homologous pairs of chromosomes are separated in order to form haploid cells, and this separation or assortment is known to be a random process. In consequence, the chromosome carrying the mutation will have a 1/2 (50%) chance of being inherited in the gamete that, after fertilization, produces a non-viable organism. In consequence, the non-mutated chromosome also will have a 1/2 chance of occurring in the offspring