Answer:
DNA is a molecule composed of two chains in form of a DOUBLE HELIX compose by ORGANIC NITROGEN CONTAINING BASE, PHOSPHATE GROUPS and PENTOSE.
Explanation:
Nucleic acids are found in all living cells. They are composed of strands made up of repeating units called nucleotides. Each nucleotide consists of
--> a five carbon sugar( PENTOSE)
--> a phosphate group
--> an organic nitrogen containing base: adenine, guanine, cytosine or thymine.
The two types of nucleic acids include:
--> Deoxyribonucleic acid ( DNA) and
--> Ribonucleic acid ( RNA)
Deoxyribonucleic acid ( DNA) is found in chromosomes located in the nucleus of cells.
STRUCTURE OF DNA
The DNA molecule consists of two strands that curve spirally to form a double helix structure. The strands are held together by hydrogen bonds between the base side arms. Each base on one strand will only pair with a specific base on the other strand: hence guanine will only pair with cytosine and adenine with thymine.
FUNCTIONS OF DNA
It stores the organism's hereditary traits and directs the day to day metabolic activities of each cell in the organism.
2. Animal Nutrition
Question 1
Give one suitable biological term for each of the following
1. Muscular contractions in the intestine causing the movement of food
2. Food that has a high fibre content.
3. A nutritional disease caused by a person refusing to eat.
4. Physical breaking down of food in the mouth by the teeth
5. Finger-like projections in the small intestine
6. The breaking down of large fat molecules into tiny droplets.
7. Process by which the liver converts excess amino acids into urea.
8. Region of the alimentary canal where most of the water is reabsorbed.
9. Muscular organ connecting the pharynx to the stomach.
10. Valve that controls the entry of food from the stomach into the duodenum,
1. Muscular contractions in the intestine causing the movement of food.
Peristaltic movement.2. Food that has a high fibre content.
Fibrous3. A nutritional disease caused by a person refusing to eat.
Malnutrition4. Physical breaking down of food in the mouth by the teeth
Mastication5. Finger-like projections in the small intestine
Villi6. The breaking down of large fat molecules into tiny droplets.
Emulsification7. Process by which the liver converts excess amino acids into urea.
Excretion8. Region of the alimentary canal where most of the water is reabsorbed.
Large intestine9. Muscular organ connecting the pharynx to the stomach.
Esophagus or Oesophagus10. Valve that controls the entry of food from the stomach into the duodenum,
Pyloric sphincterA mammal's red blood cells produce the protein hemoglobin, which carries oxygen through the bloodstream. Its hair follicle cells do not produce hemoglobin. Which statement is true about these differences? A) The red blood cells contain different genes than the hair follicle cells, causing the cells to differentiate B) The red blood cells contain DNA, but the hair follicle cells do not C) A red blood cell and hair follicle cell have the same genes, but they are expressed differently D) The hemoglobin is produced from recombinant DNA, which is only found in red blood cells
Answer:
C) A red blood cell and hair follicle cell have the same genes, but they are expressed differently
Explanation:
All cells of a living organism contain the same genetic sequence i.e. they contain the same set of genes, however, differences in the expression of these genes may occur. This is responsible for the different specific roles or functions played by organs of the body system.
The expression of a gene refers to the process by which a gene is transcribed and translated into a protein molecule, which is responsible for traits in the body. Genes are expressed differently in order for certain cells to function differently and specifically. For example, difference in expression of genes is responsible for the ability of red blood cells to produce hemoglobin and the inability of hair follicle cells to, even if they contain same genes.
Why does all mammals have seven vertebrae (bones) in their neck?
A) all mammals descended from a common ancestor
B) predators only eat animals with six neck vertebrae
C) all animals can turn their heads the same amount
D) all mammals have to stretch their necks to obtain food
Answer:
C I hope I'm right........
..............
What invertebrates only live in salt water?
sponges
echinoderms
mollusks
cnidaria
Answer:
echinoderms
Explanation:
echinoderms are a group of aquatic invertebrates but they are only found in salt water
Answer:
Sponges
Explanation:
They can only live in salt water
chromosomes_____ select all that apply
-always occur in pairs
-are tight coils of dna
-can be analyzed in a karyotype
-carry thousands of genes
-are carried on genes
Answer:
Are al
Explanation:
todos forman parte de las características de los cromosomas. Recuerde también que los cromosomas se encuentran en las células, específicamente en su núcleo.
Which Ali combination represents a male who has an X-linked recessive disorder
Describe how people get energy from oil nonrenewable
Answer:
Oil can be burned to heat water, using the steam to generate power. Or, oil can be burned under pressure to produce exhaust gasses.
What is Anaerobic Respiration?
a. process of producing energy with oxygen
b. process of producing energy without oxygen.
pls help
Answer:
it is the process of producing energy without oxygen
help with the graph
if you had it in Spanish
Compare how the human body breathes in and out. Describe what happens to the ribcage, the diaphragm and chest volume. use key scientific words. Well detailed please.
I’ll give brainliest
A single-celled organism can be classified as a prokaryote based on the absence of-
Answer:
A nucleus and membrane bound organelles.
Answer:
lack of nucleus.
Explanation:
A prokaryote is a simple, single-celled organism that lacks a nucleus and membrane-bound organelles.
What's the relationship between the angle of isolation and the rate at which the temperature changes?
ARTS :
true. or. false.
Answer:
true false true false true
3. Conversion of ammonia to nitrite and then to nitrates is called. a) Ammonification c) Denitrification
b) Assimilation d) Nitrification
Answer:
Nitrification
Explanation:
Nitrifying bacteria present in the soil convert ammonia into nitrite.
Nitrite is then converted into nitrate. This process is called Nitrification.
Predict the type of relationship between the ant and the ant-lion.
A. Commensalistic
B. Mutualistic
C. Predator-Prey
D. Parasitic
Answer:
C. Predator-Prey
Explanation:
There are predator-prey relationship between ants and antlions.
The type of relationship between the ant and ant lion is Predator-Prey. The correct option is C.
What is predator-prey relationship?Predator-prey relationship implies to the interactions among the two species where one species is the killed food resource for the another one.
The organism that feeds is referred to as the predator while the organism that is fed upon is basically the prey. There are mainly most variety of illustrations of predator-prey relations.
Competition as well as predation are ecological interactions but are not symbiotic.
Predation usually does not take place over a long period of time, along with the competition is an indirect interaction on other resources.
Predation is a symbiotic interaction in which one species sustains life on costuming the another species.
The species that win is the predator, and the species that is lost up is the prey.
Thus, the correct option is C.
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what are the different ways to recycle biodegradable waste?
Answer: Composition maybe?
Explanation:
What nervous system is controlled by the hypothalamus?
Answer:
The hypothalamus is the key brain site for central control of the autonomic nervous system, and the paraventricular nucleus is the key hypothalamic site for this control.
Explanation:
What controls traits and inheritance?
gametes
nucleic acids
proteins
temperature
Answer:
B.
Explanation:
the answer is nucleic acid
Answer: B
Explanation:
True or False: The most fertile agricultural land in North America is used to produce mostly wheat and corn.
How are bone and cartilage similar?
a. they are both rigid.
b. they both act as shock absorbers
c. they both contain living cells
d. they both produce red blood cells
Answer:
c they both contain living cells
imagine a population of squirrels in which the squirrels are a range of sizes.
how can this type of diversity affect the population?
Penecillin is a bacterium.
True
False
Answer: False
Explanation:
Answer:
False
Explanation:
They are antibiotics to fight off bacterial infections.
Meiosis plays a more significant role in reproduction than mitosis in which of the
following ways?
Answer:
A
Explanation:
the first one is the answer
What is the current to the following DNA strand TATTAGATTACA
Answer:
ATAATCTAATGA
Explanation:
Nucleic acid sequence of bases that can form a double- stranded structure by matching base pairs. DNA has four nucleobases: adenine, thymine, guanine, and cytosine. The nucleobases in a DNA strand have preferred partners to form hydrogen bonds with. Cytosine pairs with guanine, and adenine pairs with thymine. These are the base pairing rules that allow DNA replication and protein synthesis to happen.
Name the type of cell division that takes place in the zygote of an organism exhibiting haplontic life cycle
12. Flowers whose reproductive structures consist only
of stamens would be able to produce
A) fruits with seeds
B) fruits without seeds
C) pollen
D) ovules
Answer:
Pollen reproductive structures consist only
of stamens would be able to produce
Explanation:
No C is the answer
Reproductive structures are structures that make up the reproductive organs of a particular organism. These structures could include either female or the male reproductive organs.
Flowers with reproductive structures that comprise of only stamen would produce only pollen (option c).
Stamens are reproductive organs found in plants and they are male reproductive organs. For fruits with seeds to be formed the male and female reproductive organs must come together to produce a fruit.
Flowers with only the stamen will produce only pollen which is a male gamete that needs to be joined to the female gamete, ovary produced from the female reproductive structure (pistil) in a plant to produce a fruit.
Learn more: https://brainly.com/question/23140508
Salad vegetables are cut and placed in plain water. Why?
Answer:
Not only does soaking produce rid it of harmful germs or chemicals, but it can also be used to revitalize produce for a better taste and longer life. If you purchase local, organic fruits and vegetables that contain no chemicals or harmful preservatives, you can use warm water to rinse your produce.
Explanation:
Fun facts:
Through osmosis, water naturally moves from areas of low salt concentrations to areas of high salt concentrations. ... Consequently, the water in a leaf of lettuce that is soaking in salt water will migrate out of the lettuce leaving a mushy leaf behind.
Please Help.
What is the name of the process that plants use to remove carbon dioxide from the atmosphere?
1.) transpiration
2.) photosynthesis
3.) respiration
4.) decomposition
What is the purpose of the heart in the circulatory system?
Select one:
It provides oxygen during the release of hormones.
It is the muscle the pumps blood around the body.
It prevents pathogens from invading the organism.
It controls all of the body's functions.
Answer:
It is the muscle that pumps blood around the body
Explanation:
Which problem-solving technique involves drawing conclusions from a few observations?
A.
drill-down technique
B.
inductive reasoning
C.
constructive controversy
D.
reverse brainstorming
Answer: B.
inductive reasoning
Explanation:
Inductive reasoning, or inductive logic, is a type of reasoning that involves drawing a general conclusion from a set of specific observations. Some people think of inductive reasoning as “bottom-up” logic, because it involves widening specific premises out into broader generalizations.
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