life cycles of sexually producing organisms involve the alternation of haploid and diploid stages true/false
Answer:
True
Explanation:
The life cycles of sexually producing organisms generally involve alternation between the haploid and diploid generations.
Sexual reproduction involves the fusion of gametes - fertilization. The gametes are haploid (n) and are usually formed by the reductional division (meiosis) of diploid (2n) sex cells.
Haploid gametes represent the haploid stage of the life cycles of sexually reproducing organisms. During fertilization, the male and female gametes fuse together to form a diploid zygote. The zygote then continues to divide equationally (mitosis) and differentiates to give rise to a baby and eventually to either male or female adult organism.
The words below are monomers of what Carbo Hydrates, Proteins, Lipids, or Nucleic Acids 1- Glucose 2- phosphate 3- Sugar (5 C) 4- Amino Acid 5-Glycerol 6-Nitrogenous Base
Answer:
Explanation:
glucose is the monomer of carbohydrate
phosphate is the monomer of nucleic acid
sugar is the monomer of nucleic acid
amino acid is the monomer of protein
glycerol is the monomer of lipid
nitrogenous base is the monomer of nucleic acid
Trees grow throughout the year. During which season(s) do you think trees grow fastest?
Calculate the density of sulfuric acid if 45 mL of the acid weighs 100g.
Answer:
[tex] \boxed{\sf Density = 2.23 \ g/mL} [/tex]
Given:
Mass = 100 g
Volume = 45 mL
To Find:
Density
Explanation:
Formula:
[tex] \boxed{ \bold{Density = \frac{Mass}{Volume}}}[/tex]
Substituting value of mass & volume in the formula:
[tex] \sf \implies Density = \frac{100}{45} \\ \\ \sf \implies Density = 2.23 \: g/mL [/tex]
Which of the following will increase the gravitational force exerted by one object on another? Increasing the temperature of the objects Decreasing the temperature of the objects Decreasing the distance between the objects Increasing the distance between the objects
The correct answer is C. Decreasing the distance between the objects
Explanation:
Gravitational force and distance between the objects involved are inversely proportional variables; this means gravitation increases when the distance decreases. An example of this is that the Sun's gravitational force strongly attracts objects near it including planets in our Solar system, which causes planets to orbit the Sun. However, the force the Sun exerts on planets in other solar systems or in other galaxies is low due to the distance between this and the sun. In this context, to increase the gravitational force the distance between the objects should be decreased.
Answer: C
Explanation:
what is one disadvantage of insect stridulation
Answer:
Many insects stridulate when they are handled or attacked. It has been suggested that this disturbance stridulation acts to deter predators. This hypothesis was investigated in a series of experiments. Predators were given insects which had been silenced by disruption of their sound-producing mechanism or else had been sham operated but retained their normal ability to stridulate. 2. Three types of insects (mutillid wasps, Dasymutilla spp.; water scavenger beetles, Tropisternus spp.; and round sand beetles, Omophron labiatus) were given to wolf spiders (Lycosa ceratiola and Geolycosa ornatipes) at night in the field under natural conditions. When attacking silenced insects, spiders displayed greater persistence than when attacking phonic insects (Table 1). In addition, mortality was greater among silenced insects. 3. Spiders (L. ceratiola) were also given an artificial 'insect' - a vibrating probe whose vibration mimicked that of the cuticle of a stridulating insect. As with real insects, spiders persisted longer in their attack on the probe when it was silent than when it was 'stridulating.' 4. Female mutillid wasps were given to wild-caught mice (Peromyscus floridanus) in the laboratory. Unsilenced mutillids survived the encounter more often than their silenced counterparts. In another experiment, the stings of mutillid wasps were removed before testing. Mice killed nearly all these 'unprotected' mutillids. However, it took mice significantly longer to attack unsilenced mutillids and longer to kill them after initiating the assault (Table 2). 5. These results support the view that insect disturbance stridulation deters predators. Two modes of action by which these sounds may have their effect are discussed: they may serve to startle the attacker or they may alert it to the potential harmfulness of the insect and as such may qualify as an example of acoustic aposematism.
How many years of cumulative evolution separate chimpanzees from humans? Group of answer choices 7-8 million years 2-3 million years 130-140 million years 130-140 thousand years 14-16 million years
Answer:
7-8 million years
Explanation:
There is many scientific evidences present from which scientists concluded that the humans evolved from chimpanzees about 7-8 million years and the ability to walk on two legs evolved about 4 millions year ago. There are a variety of physical and behavior changes occurred in the human while evolving from apes or chimpanzees. It takes millions of years to change occurs in the DNA of an organism.
1. What pathway is used to make glucose from other metabolites such as oxaloacetate?
Statement best explains why water is essential for all living things
Answer:
Its a necessity for all living things
Explanation:
Classify each statement based on whether it describes prokaryotes only, eukaryotes only, or can describe both prokaryotes and eukaryotes.
1. unicellular
2. contain mitochondria
3. are generally less than 2 pm
4. multicellular
5. lack membrane-bound organelles
Answer:
unicellular - both prokaryotes and eukaryotes
contain mitochondrion - eukaryotes only
are generally less than 2 pm - Prokaryotes only
multicellular - eukaryotes only
lack membrane-bound organelles - prokaryotes only
Explanation:
Prokaryotes are generally unicellular, that is, they are made up of single cells only. However, there are unicellular and multicellular eukaryotes with some eukaryotes like humans and advanced plants having as many as millions of cells.
Prokaryotes generally lack nucleus and other membrane-bound organelles such as chloroplast and mitochondrion. Eukaryotes on the other hand have nucleus and membrane-bound organelles such as mitochondrion and chloroplast.
When it comes to size, prokaryotes are generally small and microscopic while eukaryotes consist of both microscopic and macroscopic cells or organisms. However, prokaryotes are generally smaller than microscopic eukaryotes.
True statement about a container of a gas
Answer:
An ideal gas differs from a real gas in that the molecules of an ideal gas have no attraction for one another
Explanation:
Decide the outcome of the hypothetical situation by dragging the label into the appropriate category Increase Would tissue damage increase or decrease if the epidermis of the skin was composed of nonkeratinized tissue? Would elasticity of the ears increase or decrease f the elastic cartilage was replaced with bone?
Would texibiliny of the intervertebral dises increase or decrease if the ibrocartlage was replaced with elastic cartilage?
Would diffusion rates of oxygen increase or decrease if the alveolar Ining of the lungs was made of stratified epithelum?
Would involuntary control of digestive motity increase or decrease if the intestines contained skeletal muscle? Decrease
Would the rate of infection increase or decrease i the epidermis was composed of pseudostratifed epithelium?
Would the vascularity of ligaments increase or decrease if they were made of bone?
Would protection of the brain increase or decrease the soงเ was made of hyaline cartilage?
Answer:
Would tissue damage increase or decrease if the epidermis of the skin is composed of non-keratinized tissue? Yes, since keratin is considered to be responsible for confining a little more stiffness to the tissue and structure, would the elasticity of the ears increase or decrease if the elastic cartilage were replaced by bone? It would decrease, elastic cartilage has more elasticity than bone tissue.
Would the texibily and intervertebral diseases increase or decrease if the ibrocartlage were replaced by elastic cartilage? It would decrease.
Would oxygen diffusion rates increase or decrease if the alveolar interior of the lungs were made up of stratified epithelium? They would decrease, since the epithelia have different shapes according to their function, the cylindrical epithelia are those specialized in absorption and exchange of molecular or chemical substances, the stratified ones with abundant stratum corneum function as barriers, either for protection or compartmental such as the epidermis. , therefore, the passage of oxygen will be less when facing the corneal barrier.
Would involuntary control of digestive motility increase or decrease if the intestines contained skeletal muscle? They would decrease, since it would become a voluntary function, and not an involuntary automatic physiological one.
Would the infection rate increase or decrease if the epidermis was composed of pseudostratified epithelium? It would increase, because the epidermis must have the corneal barrier in order to protect our organism and thus hinder the passage of pathogens into the organism, the function of the epidermis is to comply with the highly keratinized barrier of the stratum corneum.
Would the vascularity of the ligaments increase or decrease if they were made of bone? It would decrease or increase depending on the type of bone, since the cancellous is highly vascularized and the laminar one is not. But if we consider that elasticity gives more movement and movement improves circulation and vascularization, so in general terms, this would decrease.
Would brain protection increase or decrease the way ง เ was made of hyaline cartilage? It would decrease, since hyaline cartilage is less resistant and less rigid than bone tissue, thus generating possible compressions of the central nervous system.
Explanation:
All questions were answered above, and justified according to medical knowledge.
what kind of psycology is inpart of the study of the impact of natural selection and genetics upon behavior
Answer:
Evolutionary psychology
Explanation:
Evolutionary psychology is the hypothetical perspective of psychology that attempts to describe certain functional mental and psychological traits such as language, perception, memory, and how adaption/ evolution has influenced the behavior of an organism.
I hope this helps you:)
How many objective lenses are there, How many total lenses are there in a microscope, and How many adjustment knobs are used to magnify an object? (compound microscope)
Answer:
3 or 4 objective lenses
2 total lenses
2 adjustment knobs (coarse and fine)
Explanation:
I hope this helps you
Charles Darwin and Alfred Wallace first suggested: A. The idea that evolution might occur. B. A theory to explain how evolution occurs within populations. C. Changes to an individual organism’s body, caused by changes in the environment, might be passed on to the organism's offspring. D. None of the above.
Answer:
You watched the lab demo video and looked over the lab sheet. You saw how the catalyst (MnO2) affected the rate of reaction as hydrogen peroxide (H2O2) broke down in to water (H2O) and oxygen gas (O2).
How did the catalyst affect the rate of reaction?
What was the evidence that the catalyst was having that affect?
Explanation:
What protein involved in coagulation provides the activation for the final step in clotting?
A) fibrin
B) thrombin
C) prothrombin activator
D) fibrinogen
Answer:
b thrombin
Explanation:
thrombin catalyzes the activation of the molecules that are present in plasma
The protein thrombin involved in coagulation provides the activation for the final step in clotting. Thus, the correct option is B.
What is Clotting?Clotting may be defined as the procedure in which blood alters into a solid state to construct a thick mass or lump onto the surface of the injured region.
The protein thrombin catalyzes the final step in clotting which transforms fibrinogen into fibrin. Then such fibrin monomers polymerize and construct a mess of fibrin polymers which results in a fibrin clot.
Therefore, the correct option for this question is B.
To learn more about Blood clotting, refer to the link:
https://brainly.com/question/1501224
#SPJ2
What is measured during a
controlled experiment?
Answer:
In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled. The researcher can operationalize (i.e. define) the variables being studied so they can be objectivity measured. :)
Explain how and where volcanoes form (how the chemical composition of lava affects the type of volcano formed).
Answer:
Magmas differ in composition, which affects viscosity. Magma composition has a large effect on how a volcano erupts. Felsic lavas are more viscous and erupt explosively or do not erupt. Mafic lavas are less viscous and erupt effusively.
Explanation:
What effect do the 4 zones of the tropical rainforest have?
Answer:
Most rainforests are structured in four layers: emergent, canopy, understory, and forest floor. Each layer has unique characteristics based on differing levels of water, sunlight, and air circulation.
Explanation:
The shuttle system for the transfer of aceytl coa generated in the mitochondrial matrix includes:_____.
a. citrate from the citric acid cycle.
b. citrate lyase in the cytosol.
c. ATP hydrolysis.
d. the production of NADPH by malic enzyme.
e. all of the above.
Answer:
e. all of the above.
Explanation:
Acetyl-CoA is a biochemical agent, in which its main function is to transport acetyl group to the citric acid cycle. It works in metabolic reactions of protein, carbohydrate, and lipid
Acetyl-CoA is transported through the mitochondrial membrane, and enters the cytoplasm of the cell, as the molecule citrate.
The shuttle system for transfer of acetyl-CoA generated in the mitochondrial matrix to the cytosol includes:
1. citrate from the citric acid cycle.
2. citrate lyase in the cytosol.
3. ATP hydrolysis.
4. the production of NADPH by malic enzyme.
Hence, the right answer is option E: All of the above.
(i will give brainly)
Since the vast majority of scientific statements have been proven wrong, is there any good reasons to believe in science?
Answer:
No, not really science has been proven wrong many times.
Explanation:
What is one characteristic that you could observe to distinguish diatoms and dinoflagellates
Answer: Diatoms have a cell wall that includes silica, while dinoflagellates have a cell wall that includes cellulose.
Explanation:
Diatoms are unicellular algae. Some of them can live in colonies forming filaments or ribbons, they are surrounded by a cell wall made of silica called a frustula.
They are microscopic animals, almost always single-celled. They have flagella. They can be divided into two large groups differentiated by the presence or absence of cellulosic plaques in the cell wall or amphysm.
How would you determine the volume of a dead cat
Answer:
most cats are about approximately 648 cubic inches in volume
uh
come again?...........
In what ways is eukaryotic replication similar to bacterial replication, and in what ways is it different
Answer:
Ways in which DNA replication is similar in eukaryotes and bacteria:
Replication is semiconservative.
Replication origins serve as starting points for replication.
A short segment of RNA called a primer provides a 3′-OH group for DNA polymerases to begin the synthesis of the new strands.
Synthesis is in the 5′-to-3′ direction.
The template strand is read in the 3′-to-5′ direction.
Deoxyribonucleoside triphosphates are the substrates.
Replication is continuous on the leading strand and discontinuous on the lagging strand.
Ways in which eukaryotic DNA replication differs from bacterial replication:
There are multiple origins of replications per chromosome.
Several different DNA polymerases have different functions.
Immediately after DNA replication, nucleosomes are assembled.
Explanation:
Sorry that is long but i hope it helps!
Which of the following is the most likely to occur if the temperature of seawater decreases?
A. The speed of sound will decrease due to the decreasing salinity of seawater.
B. The speed of sound will increase due to the increasing density of seawater.
C. The speed of sound will decrease due to the increasing density of seawater.
D. The speed of sound will increase due to the decreasing density of seawater.
Answer:
B- The speed of sound will increase due to the increasing density of seawater.
Explanation:
If the temperature of seawater decreases its density increases, but only to a point
Answer:
C. The speed of sound will decrease due to the increasing density of seawater. Most likely to occur if the temperature of seawater decreases.
Explanation:
Most likely to occur if the temperature of seawater decreases.
Chlorpromazine (Thorazine) may cause which of the following side effects? a. Respiratory depression b. Hemorrhage c. Tachycardia d. Gastric ulcers
Answer:
The correct answer is option d. "Gastric ulcers".
Explanation:
Chlorpromazine (Thorazine) is an antipsychotic medication, the widest medicine used to treat schizophrenia, and other psychotic disorders such as bipolar disorder. One of the most common side effects of the use of Chlorpromazine is the formation of gastric ulcers. This happens because Chlorpromazine inhibits histamine and insulin, two compounds that stimulate gastric secretion.
. All living things are made of cells
Answer:
yes all living things[animals and plants ] have their own cells
Explanation:
hav a nice day :}
Glycoconjugates result from the covalent linkage of carbohydrate to proteins or:________.A. Amino acids B. Lipids C. Nucleotides D. Both A and B are correct E. None of the above are correct
Answer:
B. Lipids
Explanation:
Glycoconjugates occurs as a result of a process known as glycosylation.
Glycoconjugates result from the covalent linkage of carbohydrate to proteins or lipids.
It is also used to refer to carbohydrates who are covalently bonded to other chemical compounds such as protein, lipids, peptides etc.
Which is the experimental group?
Answer:
An experimental group is a group that receives a treatment in an experiment.The "group" is made up of test subjects.(people, animals,plants, cells,etc.) and the "treatment" is the variable you are studying.
An experimental group is also known as a treatment group.
How does blood ph change during exercise?
Answer:
The lungs provide a faster way to help control the pH of the blood. In response to exercise, the body increases its breathing rate which helps to counteract the pH-lowering effects of exercise by removing CO2, a component of the principal pH buffer in the blood.