Answers
Related Questions
Two types of cultivation systems
Answers
Answer:
Today, there are two divisions of agriculture, subsistence and commercial, which roughly correspond to the less developed and more developed regions.
Explanation:
Hope this helps :)
When antibodies cause antigens to agglutinate, it allows them to be disappointed of by phagocytes more easily true or false?
Answers
Answer:
true
Explanation:
if you need explanation tell me :D
clasificatoin of hormones
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Answer and Explanation:
Hormones are substances that administer the human body having several different and essential functions for the proper functioning of the body. There are several different types of hormones and they are classified into four groups called peptides, steroids, amines and eicosanoids.
Peptides are hormones that have 3-20 amino acids. Among these hormones we can mention insulin, glucagon and somatostatin.
Steroids are hormones produced from cholesterol. Among them we can mention Cortisol, Aldosterone and Testosterone.
Amine hormones are those that are released into the thyroid and adrenal glands. These hormones circulate freely in the blood. Among them are epinephrine and norepinephrine.
Eicosanoids are the hormones derived from arachidonate. Among them are the hormones called prostaglandins, thromboxanes and leukotrienes.
A major factor in changing the frequencies of the genes in the gene pool
of a population is
A) domestication
B) migration
C) asexual reproduction
D) random mating
Answers
Answer: b
Explanation:
Genetic drift refers to these fluctuations in relative allele frequency that may occur more frequently or less frequently throughout time. Rarely occurring alleles are more likely to be lost in small populations, where genetic drift typically takes place. Thus, option B is correct.
What frequency of genes in the gene pool affect migration?Migration impacts the genetic makeup of the resident population to a greater or lesser extent, depending on the amount of migration and the difference in allele frequencies between the resident and migrant populations.
Therefore, A major factor in changing the frequencies of the genes in the gene pool of a population is migration. Gene flow is the movement of alleles through human migration from one group to another.
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rnai is used for one of the following purposes
A) to clone a particular gene
B) To disrupt a DNA
C) To verify the function of a gene
D) To produce a New gene
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What is the function of the type of muscle that is pictured below?
-support and movement of the skeleton
-movement of food through the digestive system
-contraction and relaxation of the heart
-generation and conduction of electrical signals
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Answer:
answer is B
Explanation:
A student wants to use western blotting to confirm the presence of human Sonic hedgehog (Shh) in samples run on SDS-PAGE and transfered to a nitrocellulose membrane. The antibody reagent box in their lab contains Mouse anti-Shh MAb and Chicken anti-mouse IgG-HRP. What substrate will they need in order to perform colorimetric detection of Shh on their western blot
Answers
Answer:
BCIP/NBT
Explanation:
BCIP/NBT is a colorogenic substrate used for AP. AP stands for alkaline phosphatase. When they are catalyzed with this alkaline, we would have a product that has a dark blue or probably a purple color. NBT stands for nitro blue tetrazolium. Both of these work as substrate for the reaction. BCIP oxidizes BCIP to form this color.
Describe the role of acetylcholinesterase in stimulation of a muscle fiber.
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Answer:
"It is the enzyme that breaks down acetylcholine in the synaptic cleft, ending stimulation of the muscle fiber. -It is the type of receptor found in the motor end plate that binds acetylcholine, initiating an electrical impulse."
Explanation:
How many kinds of elements are used in carbon dioxide
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Answer:
2
Explanation:
Answer:
2
Explanation: oxygen atoms and one carbon
Passive immunity provides more rapid protection then does active immunity true or false
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Answer:
true
This is the major advantage to passive immunity; protection is immediate, whereas active immunity takes time (usually several weeks) to develop.
hope this helps:))
3 rules that can identify chemical reactions
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Answer:
1)colour change
2) fizzing or bubbling
3)odour change
Explanation:
you can also say temp change, formation of a precipitate or smoke being formed but those are the main 3 i know
what is the source of all energy in an ecosystem?
A) recycling of matter
B) solar energy
C) cellular respiration
D) photosynthesis
Answers
Explanation:
B)SOLAR ENERGY
I HOPE ITS HEALP
Answer:
B. solar energy
Explanation:
dahil SUN po ung na search ko tas baka solar dahil solar mn ung sun dba?
# CARRY ON LEARNING
HOPE IT HELPS
do yall think chevy, ford, or dodge is better & why.
powerstroke, duramax, or a cummins?
Answers
Answer:
huh i like cumin
Explanation:
Answer:
When it comes to pickups, Ford bests Chevrolet in almost every category. Ford trucks ranked higher for safety, performance, reliability, and interior quality. But while Ford took the lead in most categories, Chevrolet didn't trail far behind in performance and fuel efficiency.
Explanation:
PLEASE HELP!!!!!!
The bicarbonate buffer equation suggests that for every CO2 which reacts with water, we form one H+ and one HCO3-.However, after CO2 is added to the blood in systemic capillaries, I observe a lot more HCO3- in the plasma than H+. what happened to the H+ that was produced?
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1. Stomata are found on (1 point)
a flowers.
b leaves.
c stems.
d leaves, stems, and roots.
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the stomata are mostly found on the under surface of plant leaves
The movement of materials in and out of a cell that uses no cell energy is...
A: mitosis
B: diffusion
C: active transport
D: photosynthesis
Answers
Answer:
diffusion
Explanation:
Some diseases are diagnosed by looking for antibodies in the patient’s blood. Explain what a positive finding of antibodies means.
Answers
Answer:
The patient has/had the disease.
Explanation:
A positive finding means that antibodies were found in the patient’s blood. Antibodies are made when you have a disease in order to help fight off the disease. Therefore, if you have antibodies for a disease, you have or had that disease (Or were vaccinated). Hope it helps :)
help me pls or im going to fail
Answers
Answer:
c.
Explanation:
Look closely, for key words. In most questions, they like to sneak hints in there but their quite hard to see! Hope it helps! :) I'm not always accurate.
Answer:
biosphere
Explanation:
please answer!!!! really need to submit this soon!!
Answers
Answer:
To my Knowledge and understanding, the name of fluid A is oxygenated Blood or u could simply submit blood. Fluid A does contain red blood cells, namely Hemoglobin. I am not quite sure what fluid B is, but visually it looks like the cytoplasm surrounding cells. According to my knowledge cytoplasm does not contain red blood cells, but rather it contains glucose,sugars and proteins etc.
Hope this helps!
Kind regards
Farah Syed
Explanation:
/-
How can the rate at which bacteria are evolving to be antibiotic resistant be slowed down by humans?
A.
use a variety of different antibiotics
B.
reduce the usage of antiobiotics
C.
apply fewer pesticides to crops
D.
Both A and B
Answers
Answer: D. Both A and B
Explanation: Bothe A & B would help with B being the most effective method of slowing antibiotic resistance. Not using antibiotics when not absolutely necessary would be best but when necessary using a variety instead of reliance on a popular few would help.
Speckled trout and red drum both prey on mullet along the Texas coastline. Dead zones are caused by excessive nutrient pollution, along with other factors that deplete the oxygen from the water. What likely effect would increasing dead zones have on the populations of speckled trout, red drum, and mullet?
Answers
Answer:
All Three Populations Would Decrease
Explanation:
Dead zones have little to no life in them, and besides the fact that this would mean the popoulations of all of them would just be down because of this, mullet will die out due to nothing to feed on, which will make drums and trout also die out, so all of the populations would go down.
The effect that would be increasing dead zones have on the populations of speckled trout, red drum, and mullet is that the population of all three species would get decrease.
What do you mean by Prey?Prey may be defined as an animal that is hunted and killed by another for food.
Dead zones lead to a decline in biodiversity of that area, due to the excessive nutrient pollution and depletion of oxygen. If the members of mullet species get reduced in an environment, species of speckled trout and red drum feel the shortage of food, and hence they also get eliminated or die from the surrounding.
Therefore, the effect that would be increasing dead zones have on the populations of speckled trout, red drum, and mullet is that the population of all three species would get decrease.
To learn more about Prey-Predation interaction, refer to the link:
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An increase in heart rate will most likely result in
O (1) a decrease in metabolic rate
O (2) an increase in pulse rate
O (3) an increase in cell division
O (4) a decrease in body temperature
Answers
Answer:
O (2) an increase in pulse rate
An increase in heart rate will most likely result in an increase in pulse rate. So, the correct answer is (B).
What is Heart?Heart is a fist shaped organ which pumps blood throughout your body present in the centre of the chest tilted slightly towards the left. It is the primary organ of the circulatory system which pump blood around the body as the heart beats. The blood sends oxygen and nutrients to all parts of the body and carries away unwanted carbon dioxide and waste products from there.
Heart has four chambers (lobes) made up of muscles- two on the left side and two on the right made up of three layers of tissue -epicardium, myocardium and endocardium. These layers are surrounded by the pericardium which a thin outer lining protecting the heart.
It circulates abut 5-8 liters of blood. Heart, blood and blood vessels together make the cardiovascular system. Blood is pumped around your body through a network of blood vessels- Arteries, Capillaries and veins. Heart has four valves which act like gates which keep the blood moving in the right direction.
Thus, an increase in heart rate will most likely result in an increase in pulse rate. So, the correct answer is (B).
Learn more about Heart, here:
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For each of the following terms related to regulation of the cell cycle, briefly describe how that term functions in normal cells. Then, describe how that term may be disrupted in the context of cancer cells. a. density-dependent inhibition i. normal cells – ii. cancer cells – b. anchorage dependence in. normal cells – ii. cancer cells – c. growth factors i. normal cells – ii. cancer cells
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Answer:
- Density-dependent inhibition refers to the mechanism by which cells limit their density due to cell-cell contacts. Cancer cells may not undergo density-dependent inhibition, while normal cells exhibit density-dependent inhibition.
- Anchorage dependence refers to the mechanism by which cell stop their division after they form a single layer on a substrate. Cancer cells may not undergo anchorage dependence and therefore they continue to divide, while normal cells undergo apoptosis (programmed cell death)
- Growth factors are signaling molecules (often proteins and peptides) that promote cell division. Overexpression of these factors may lead to carcinogenesis (i.e., the proliferation of cancer cells), while the expression of these factors is normal in normal cells.
Explanation:
Density-dependent inhibition is the mechanism exhibited by normal cells which stops cell division once a threshold density value is reached. In general, cancer cells lost the density-dependent inhibition of growth and therefore they continue dividing. Anchorage dependence refers to the increase in the proliferation of cells that are attached to a solid surface. Most normal cells display anchorage dependence and therefore they need contact with a solid surface to proliferate, while cancer cells are independent of this attachment, proliferating and invading tissues (metastasis). Finally, growth factors are molecules capable of stimulating cell proliferation and cellular differentiation. In consequence, overexpression of growth factors may lead to cancer due to the uncontrolled division of cancer cells. Some examples of growth factors are Epidermal growth factor (EGF), Fibroblast growth factors (FGF) and Vascular Endothelial Growth Factor (VEGF).
Describe the characteristics and classification of seedless vascular and nonvascular plants
Answers
Answer:
Vascular plants, also known as tracheophytes, are plants found on land that have lignified tissues for conducting water and minerals throughout the body of the plant.
1. These lignified tissues are also called vascular tissue and consist of water-conducting xylem tissue and food-conducting phloem tissue.
2. Vascular tissue forms a central column, also called stele, through the plant axis for the transport of different substances.
3. Vascular plants are said to have a true stem, leaves, and roots due to the presence of vascular tissues.
4. The root is a true root that enables the plant to anchor onto the soil and gets nutrients from it.
5. The leaves are broad and have stomata that work for gas exchange and support transpiration.
6. The stem of vascular plants is multilayered with vascular tissue that helps in the protection and conduction of food and water.
7. The arrangement of these issues might be different in a different group of plants as it depends on the pattern of division of cells.
8. The xylem is composed of non-living matter, tracheids, and vesicles, hardened by lignin that provides a stiff structure to the tissue. 9. The phloem, on the other hand, contains living sieve elements that are not lignified.
10. Vascular plants are capable of surviving on land due to their ability to transport food, water, and mineral to different parts of the plant by creating pressure through the tissues.
11. Besides, they also have several modifications that facilitate their survival on land.
12. Another essential characteristic of vascular plants is that the principal generation phase in these plants is the sporophytic phase where they produce diploid spores.
13. Vascular plants are tall and large in size compared to the non-vascular plants because of their ability to transport necessary substances to all parts of the body via vascular tissue.
14. It is believed that vascular plants are a more evolved version of non-vascular plants and thus came later in the evolutionary history.
15. Vascular plants are divided into two groups; non-seed plants or lower vascular plants or cryptograms and seed plants or higher vascular plants or phanerogams.
16. The lower vascular plants include plants like ferns that although are adapted to survive on land still have some characteristics of their aquatic ancestry. These plants belong to the group Pteridophyta.
17. The higher vascular plants are numerous and extremely diverse and are further divided into different subgroups.
18.Some examples of vascular plants include maize, mustard, rose, cycad, ferns, clubmosses, grasses, etc.
Answer:
Definition of nonvascular plant
: a simple, low-growing, nonflowering plant (such as a moss or liverwort) that lacks specialized conducting channels for transporting water and nutrients
vascular plants have lignified tissues for conducting water and minerals throughout the plant.
Explanation:
The table lists four major groups of vertebrates, which are animals with a backbone. It also shows whether each group has four important traits.
Which pair of animals have the most similair DNA based on their shared traits?
A. A tuna and a sparrow
B. A frog and a salmon
C. A robin and a Salamander
D. A snake and a lizard.
Answers
Answer:
I believe D
Explanation:
Answer:
D
Explanation:
I just did the test
In the Cori cycle, when glucose is degraded by glycolysis to lactate in muscle, the lactate is excreted into the blood and returns to the liver.
a. True
b. False
Answers
Answer:
The correct answer is A. The statement is true.
Explanation:
Muscle obtains ATP from glycolysis. When exercise conditions are anaerobic, glucose is degraded to lactate. Lactate is exported into the circulation and is taken up by the liver. The liver synthesizes glucose again from lactate via the gluconeogenic pathway. These two metabolic pathways that allow the coupling of the function of two tissues is what is known as the Cori cycle. The energy cost is 4 P bonds / each glucose that travels both glycolytic-gluconeogenic pathways.
What was the ecosystem from which the first terrestrial animals emerged?
Answers
However, the anatomy of the first tetrapods reveals that they remained subservient to the aquatic habitats present on the continents (rivers, streams, ponds) in order to integrate literally terrestrial ecosystems only from the Carboniferous (-345 million years).
Roberto is color blind. Both of Roberto's parents are color blind. Roberto also has a brother and a sister, but neither have been tested for the color blindness phenotype. Roberto's wife Linda has full color vision. Both of Linda's parents have full color vision. Linda's maternal grandfather (her mother's father) has full color vision, while her maternal grandmother (her mother's mother) is color blind. Linda's fraternal grandfather (her father's father) is color blind, while her fraternal grandmother (her father's mother) has full color vision.
Required:
Based on the pedigree you constructed and information provided, explain the inheritance pattern for this trait. Be sure to identify (A) whether the trait is autosomal or sex-linked, and (B) dominant or recessive, and then (C) explain how you identified the inheritance pattern.
Answers
Answer: color blindness is an x linked recessive trait
Explanation:
color blindness is an x linked recessive trait as the pedigree shows the following features:
no skipping of generations
affected fathers have carried to daughters
affected mothers have affected sons
WILL MARK BRAINLIEST!
Scarlett Witch has telepathic powers. If telepathic powers are x-linked recessive, is it possible that she have a male child that isn't telepathic? Justify your answer by drawing a punnett square.
Answers
Answer:
I don't think she could have a kid without powers
Explanation:
Is A+ blood a good match for A-? If not why not
Answers
yes it is good match . ftdhudidiwid
Answer:
If your blood is A positive (A+), it means that your blood contains type-A antigens with the presence of a protein called the rhesus (Rh) factor. Antigens are markers on the surface of a blood cell.
Explanation:
Blood types are passed down genetically. If you have type A blood, your parents had one of the following possible combinations of blood types:
AB and AB
AB and B
AB and A
AB and O
A and B
A and A
O and A