Answer:
This means that males only have one copy of most of the genes on the X chromosome, whereas females have 2 copies. Thus, males can have a disease like hemophilia if they inherit an affected X chromosome that has a mutation in either the factor VIII or factor IX gene.
_____ are members of the domain Eukarya.
Archaebacteria
Viruses
Bacteria
Fungi
Answer:
Fungi are members of the domain Eukarya. Cells of fungi contain a nucleus which allows them to be members of this domain
Explanatio
Just after they taste a sweet liquid, mice are injected with a drug that produces an immune response. Later, the taste of the sweet liquid by itself triggers an immune response. This best illustrates
Answer:
This question lacks options, options are:
a) classical conditioning
b) observational learning
c) spontaneous recovery
d) operant conditioning.
The correct answer is a.
Explanation:
The classical conditioning theory derives from the experiments of the Russian physiologist Ivan Pavlov, he hypothesized that when any stimulus predicts the occurrence of another stimulus that triggers an automatic response, that first stimulus would acquire the ability to trigger that response, in other words , is a type of learning according to which an originally neutral stimulus, which does not provoke a response, becomes able to provoke it thanks to the associative connection of this stimulus with the stimulus that normally provokes said response. The conditioning of the immune response is built on the same principles of the classical conditioning paradigm described by Ivan P. Pavlov in which an environmental stimulus that by itself does not produce any immune reaction (conditioned stimulus), is associated with substances that stimulate or they suppress immune function (unconditioned stimulus), and finally, by presenting the conditioned stimulus alone, trigger the appropriate immune response.
lactase and carbonic annhydrase are examples of what type of substances
Answer: They both are enzymes
A meiotic error occurred during gamete formation, resulting in an egg that has 24 chromosomes. If that egg is fertilized by a normal sperm, how many chromosomes will be in the zygote
Answer:
47 chromosomes
Explanation:
Meiosis is a kind of division that reduces the chromosome number of the daughter cells by half i.e. 2n - n. It occurs only in reproductive cells to produce sex cells or gametes. In humans, meiosis occurs to produce gametes (egg and sperm) that have 23 haploid chromosomes.
N.B: Somatic human cells have 46 chromosomes
According to this question, a meiotic error occurred during gamete formation, resulting in an egg that has 24 chromosomes. If that egg is fertilized by a normal sperm i.e. sperm with 23 chromosomes. A zygote that posseses (23 + 24) = 47 chromosomes will be produced.
Explain how fluctuations in abiotic cycles can influence populations.
Answer:
Populations are influenced by fluctuations in any of the abiotic cycles. The fluctuation of seasonal cycles can cause populations to hibernate, migrate, or breed. Organisms hibernate as a result of seasonal fluctuations that cause them to have a limited resource supply.
Which do all cells need in order to function?
oxygen
watercarbon dioxide
offspring?
Answer:
oxygen for animals
plants cells need water and CO2
There are little birds that spend a great deal of time on the back of a rhinoceros and eat the blood-sucking ticks out of the rhino's ears. The rhino greatly benefits from the relationship, since it cannot remove the ticks itself. The tick-rhino relationship is an example of ________.
Answer:sen
Explanation:when both parties mutually benifit from one another
3
Which power does this expression simplify to?
[(7)(79)
1
722
1/ 를
O 74
O 7"
Answer:
c one
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Explain how the discoveries by Rosalind Franklin helped Watson and Crick build an accurate model of DNA.
Answer:
Rosalind's x-ray showed that the ladders of nucleotides were inside a double helix.
Watson and Crick built models with the ladders on the outside.
Which states the sequence of contractions in one heart beat?
A)
left atrium and left ventricle together, pause, right atrium and right ventricle together
B)
left atrium, left ventricle, right atrium, right ventricle, pause
C)
right atrium and left atrium together, right ventricle and left ventricle together, pause
D)
right atrium, right ventricle, left atrium, left ventricle, pause
What is meant by "lowering the
activation energy" ?
A. Less energy is required to start the reaction
B. Less energy is released by the reaction
C. Less energy is absorbed by the reaction
Links and random answers will be reported
Answer:
a
Explanation:
activation is the start
Answer:
a
Explanation:
Which type of cell adhesion is useful for anchoring cells together and defending against shear forces on tissues
Answer:
Desmosomes
Explanation:
Desmosomes are cellular structures that adhere to neighboring cells. Its function is to hold the epithelial cells together, associating the intermediate filament cytoskeletons of neighboring cells, thus forming a transcellular network with high resistance to mechanical traction. It thus allows the cells to maintain their shape and the epithelial sheet to exist in a stable form. Inside cells act as anchoring sites for intermediate rope-shaped filaments, which form a structural network in the cytoplasm providing a certain rigidity. Through these junctions the intermediate filaments of the adjacent cells are indirectly connected forming a continuous network that extends throughout the tissue.
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Select each item in the left column and its match in the right column.
Answer:
Explanation:
Diploid - Having pairs of chromosomes
Chromosome - A strand of DNA wrapped around a protein
Haploid - Having only one set of unique chromosomes
DNA - The molecule that carries genetic information
Sex Chromosome - An X or Y chromosome
Homologous Chromosome - A pair of chromosomes that contain information for the same traits
What will happen if RNA polymerase fails to attach to the promoter?
Translation will begin early.
Transcription will not begin.
RNA polymerase will unwind DNA strands.
An mRNA strand will be made before translation begins.
Answer:
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your answer is transcription will not begin
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Answer: the answer is b. Transcription will not begin.
Explanation:
One of the ways that food can be preserved is by heavily salting it so that bacteria cannot live upon the food. What causes the bacteria to die in an extremely salty environment? Group of answer choices
Answer:
Dehydration
Explanation:
What causes bacteria to die in an extremely salty environment is dehydration due to the loss of osmotic balance in their cells.
Water molecules would normally move from the region of high water potential or low solute concentration to the region of low water potential or high solute concentration through a biologically permeable membrane.
An extremely salty environment would be hypertonic to the cells of bacteria and the cell walls of bacteria act as biologically permeable membranes. Hence, the bacteria cells lose water due to the osmotic movement of water from their cells to the surrounding salty environment.
Scientists base many of their investigations on questions that test accepted theories. Which outcome of an investigation would cause a scientist to ask a different question? A) The observed results are different from the expected results
B) The investigation had many sources of error. C) Another scientist proposed the same theory.
D) The expected results could be explained in different ways.
Answer:
A scientist would ask a different question when he or she founds that the observed results are different from the expected results.
Explanation:
When one expects something and gets something else, then one is having a big enough cause to ask for new questions and initiate a new investigation. Scientific investigation is the process by which the researchers and scientists use a planned approach to answer questions regarding the world around us.A person with curly hair has children with a person who has straight hair. All children in the F1 generation have wavy hair. What kind of inheritance pattern explains this phenomenon? What would the F2 generation look like, i.e., what would the genotype and phenotype ratios be if two wavy haired individuals had children
Answer:
The correct answer is -
a. incomplete dominance
b. f2 = 1:2:1 = straight:wavy:curly
Explanation:
In this question, it is given that a person with curly hair and a person with straight hair has all children with wavy hair. It means that the heterozygous offspring in F1 has blended traits which means this trait shows incomplete dominance. Suppose C is curly hair c is straight hair then f1 offspring will have Cc (wavy hair)
now in F2:
cross: Cc cross with Cc
gametes: C, c
Punnett square:
C c
C CC Cc
c Cc cc
Thus, the genotype and phenotype ration would be :
genotype: 1:2:1 = CC:Cc:cc
phenotype: 1:2:1 = straight:wavy:curly
Autoclaving is the most effective among all moist heat-related antimicrobial methods. (True or False)
Answer:
True.
Explanation:
Autoclaving is the most effective among all moist heat-related antimicrobial methods because this method can kill all the harmful microbes such as bacteria, fungi and viruses. Moist heat causes destruction of microorganisms by denaturation of macromolecules that is present in their body such as proteins. Autoclaving is a very common method for moist sterilization. It is an effective method in killing fungi, bacteria, spores, and viruses but it does not eliminate prions.
Which of the following substances will cross the cell membrane through
osmosis?
O A. Large proteins
O B. Water
O C. Sodium ions
O D. Nonpolar molecules
There are 3 basic structural types of joints: fibrous, cartilaginous, and synovial. If a joint does NOT move, you can assume that it's either ___ or ___. (Choose 2).
Answer:
The correct answer is - fibrous, cartilaginous.
Explanation:
In the body, there are joints named after the type of tissue attached to them and these joints are:
1. fibrous joints - these are connected with dense connected tissues and called immovable or fixed joints.
2.cartilaginous joints - these are joined by cartilage tissue. These joints are also not able to move freely.
3. synovial joints are known as movable joints and can move freely. These are present in a fluid-filled capsule for better movement.
explain with the scientific reason that carbohydrate and protein are composed of several unit of monomers
Answer:
Like starch, cellulose is a complex carbohydrate made up of many molecules of glucose linked together. But unlike starch, plants do not use cellulose to store energy. Instead, plants use cellulose as a structural molecule. It forms the cell wall that gives plant cells shape and support.
Explanation:
True or false? Phototropism only happens after plants move from darkness into the light.
Group of answer choices
False
True
Answer:
phototropism only happens after plants move from darkness into the light (false)
Answer:
The answer is false.
Explanation:
‼️Need answer asap‼️. Which jar contains a mixture? A jar of solid carbon. A jar of carbon dioxide gas. A jar of liquid copper. A jar of copper and water.
Answer:
A jar of copper and water
Explanation:
The rest are compounds.
Identify the error in the following statement: “Photosynthesis is a chemical reaction that takes place in the chloroplasts of green plant cells, where chemical energy is used to convert carbon dioxide and water into glucose and oxygen.”
A. “chloroplasts” should be “mitochondria”
B. “water” and “oxygen” should be switched
C. “chemical” should be “light”
D. No errors
Answer:
C light energy instead of chemical energy
Explanation:
Photosynthesis does take place in the chloroplasts (repirarion takes place in the mitochondria)
The equation for photosynthesis is Carbon dioxide + water --> glucose + oxygen (so that statement is correct)
Answer:
D. No errors
Explanation:
which type of gas or gasses are ressponsible for the start of life on earth
Answer:
Before life began on the planet, Earth's atmosphere was largely made up of nitrogen and carbon dioxide gases. After photosynthesizing organisms multiplied on Earth's surface and in the oceans, much of the carbon dioxide was replaced with oxygen.
Explanation:
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Which structure is represented by the letter C?
Choose 1 answer:
A
Chloroplast
B
Mitochondria
C
Vacuole
D
Nucleus
Answer:
A. Chloroplast
Explanation:
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Answer:
A chloroplast
Explanation:
Which of these is an example of an adaptive (or specific) immune response?
A.
A person's immune system responds to an insect bite by increasing blood flow to the area and causing it to become inflamed.
B.
A person's immune system recognizes that a bacterial infection is present and signals the hypothalamus to increase body temperature.
C.
A person's immune system recognizes viral particles due to a previous vaccine and creates antibodies to fight off the resulting infection.
D.
A person's immune system responds to dirt entering the eye by increasing tear flow and flushing the dirt out of the eye.
Answer:
I'm not quite sure but I believe the answer is C.
Explanation:
What movement of the thumb would be most affected by lesion of the median nerve in the cubital fossa
Answer:
flexion
Explanation:
The flexion is a movement of the body part that is described the bending of an elbow, or the clenching a hand into a fist, etc. where the angle between any segment of the body and its proximal segment decreases.
In simple words, the flexion is a movement which decreases the angle between two body parts when they are moved.
The flexion occurs in the sagittal plane.
Thus, the movement of a thumb that would be mostly affected by the lesion of median nerve in cubital fossa is the flexion movement.
what a meteor is called before it enters Earth’s atmosphere
Answer:
A meteor, before entering earth's atmosphere is known as a meteoroid
The Venn diagram compares aerobic respiration and anaerobic respiration. Which statement could be categorized in the overlapping section of the Venn diagram?
A: uses pyruvic acid
B: has commercial uses
C: regenerates NADH
D: produces 36 ATP
Answer:
C. regenerates NADPHExplanation:
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