Answers
Answer:
A2 B1 C4 D1
Explanation:
Related Questions
are amino acids associated with proteins
Answers
Answer:
Yes
Explanation:
Amino acids create proteins
7. Gene expression may be regulated:
A) only during translation
B) only during transcription
C) during transcription and translation
D) only during replication
E) during replication and transcription
8. During anaphase of meiosis I toward opposing poles of cell are pulled:
A) whole chromosomes
B) sister chromatids
C) bivalents
D) fragments of sister chromatids
E) tetrads
9. One of a series of different versions of gene is called:
A) genome
B) haploid
C) diploid
D) allele
E) allosome
10. Which of the following genotypes would produce the smallest number of different gametes if the alleles are assorted independently?
A) aa BB Dd
B) AA BB DD
C) Aa Bb DD
D) Aa BB DD
E) Aa Bb Dd
11. Which of the following processes can decrease the genetic variation in natural populations?
A) recombination
B) immigration
C) mutagenesis
D) inbreeding
E) hybridization
12. Which of the following structures present in the embryos of higher plants develops into primary leaves of seedlings?
A) epicotyl
B) endosperm
C) radicle
D) hypocotyl
E) cotyledon
13. Which of the following organisms would be classified as primary consumer?
A) lion
B) Escherichia coli
C) barley
D) cow
E) Candida albicans
14. Which of the following characterizes monocotyledonous plants?
A) Their embryos have one cotyledon.
B) In their stems vascular bundles are usually arranged in ring.
C) Their flowers parts are usually in multiples of four or five.
D) They have usually taproot.
E) Their leaves usually have netlike veins.
15. Which of the following types of plants tissue transport water and minerals?
A) phloem
B) xylem
C) meristem
D) vascular cambium
E) epidermis
16. Which of the following require a host cell because they are not able to make proteins on their own?
A) Paramecium caudatum
B) Escherichia coli
C) Influenza virus
D) Saccharomyces cerevisiae E) Euglena viridis
17. Which of the organisms is not correctly labeled?
A) Bacteria – Staphylococcus aureus
B) Plantae – Pine
C) Fungi – Spider
D) Animalia – Lion
E) Viruses – HIV
18. Eutrophication is the process of:
A) vegetation succession in lakes
B) nutrient depletion of lakes
C) increase inflow of minerals in lakes
D) primary succession in lakes
E) biological renewal of aquatic ecosystems
19. Which of the following is a prezygotic isolating mechanism to prevent reproduction between species?
A) geographic isolation
B) zygotic mortality
C) isolation by hybrid sterility
D) isolation by hybrid breakdown
E) isolation by hybrid inviability.
20. Which of the following plant tissue is characteristic only for the leaves, but not for the roots?
A) xylem
B) phloem
C) epidermis
D) cambium
E) mesophyll
21. Rhizobium forms an endosymbiotic nitrogen fixing association with roots of:
A) pine
B) rice
C) rose
D) bean
E) coconut palm
22. Which of the following is found in an unusual high proportion in cells of cardiac muscle?
A) lysosomes
B) mitochondria
C) mRNA
D) Golgi apparatus
E) cell nucleus
23. Which of the following organisms would most likely be found at the top of an energy pyramid?
A) clams
B) sardines
C) sharks
D) kelp
E) mollusca
Meiosis
female gamete
Meiosis
male gamete
X
zygote
embryo
25. Echinococcosis disease is caused by:
A) Echinococcus
B) Diphyllobotrium
C) Trichinella
D) Enterobius
E) Fasciola
26. Which of the following organisms conduct ethanol fermentation?
A) yeasts
B) bears
C) spiders
D) barley
E) mushrooms
27. Steroids are not:
A) sex hormones
B) cholesterol
C) corticosteroids
D) bile acids
E) vitamin C
28. Which of the following is the right order of the four stages of food processing?
A) digestion, ingestion, absorption, elimination
B) ingestion, digestion, elimination, absorption
C) ingestion, digestion, absorption, elimination
D) digestion, ingestion, absorption, elimination
E) absorption, elimination, digestion, ingestion
29. Which of the following statements is true?
I. The pH of urine is close to neutral (7).
II. Urine is a liquid product of the body that is secreted by urinary system. III. Lack of vasopressin in the blood increases diuresis.
A) I
B) II
C) I, II, III
D) III
E) I, III
30. Which hormone is produced by the placenta?
A) progesterone
B) insulin
C) thyroxin
D) melatonin
E) glucagon
31. Which of the following is not characteristic for mammals?
A) mammary glands
B) hair
C) cold-blooded
D) three middle ears bones
E) sweat glands
32. All of the members of a particular species that live in one area are called a(an):
A) biotope
B) community
C) ecosystem
D) biosphere
E) population
Answers
Answer:
Omg questions are sooo long
Our eyes are always the same size from birth
Answers
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✍︎ꕥᴋɪᴍ ᴀʀᴀꕥ
define cell and atom
Answers
Answer:Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. ... Cells have many parts, each with a different function
Explanation: i hope that helps
An example of a consumer gaining chemical energy is:
O A. a baby bird hatching from an egg.
B. a deer drinking water from a stream.
C. a bear eating a salmon.
D. a dog chasing a rabbit.
Answers
Answer: C
Explanation: a bear eating a salmon.
A database speeds up the sharing of scientific knowledge by:
A. assembling large amounts of information in a single location.
B. forming the lowest part of a structure, building, or pedestal.
C. increasing the rate of a chemical reaction when present in
solution
D. reducing a complicated idea to a simple mathematical expression.
SUBMIT
Answers
Answer:B: assembling large amounts of information in a single location.
Explanation:
What is the answer with explaining
Answers
Answer:
EeWw
Explanation:
The allele for the earlobe is depicted as e while that of the hairline is w.
A parent that is homzygous recessive for earlobes (ee) and homzygous dominant for hairline (WW) would have the genotype eeWW.
The other parent that is homzygous dominant for unattached earlobes and homzygous recessive for hairline would have the genotype EEww
eeWW x EEww
During meiosis, each genotype will form gametes.
eeWW: eW, eW, eW, eW
EEww: Ew, Ew, Ew, Ew
These gametes will randomly unite during fertilization to produce offspring. Since the same gametes are formed by each parent:
eW x Ew
offspring
100% EeWw (see the attached image for the Punnet's square)
The genotype of all the children would be EeWw and would phenotypically be with unattached earlobes and dominant hairline.
Compare the outcome of mitosis vs. meiosis.
Answers
Answer:
Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells
Explanation:
- one cell division
- no crossing over
- produces 2 diploid daughter cells
- daughter cells are identical
Meiosis:
- 2 cell divisions occur
- crossing over occurs in prophase
- produces 4 haploid daughter cells
- daughter cells are genetically different
what is the polynomial system of nomenclature as used in the middle ages?
Answers
Explanation:
Polynomial System of nomenclature was the older form of naming organisms before the advent of binomial system. In polynomial system, a generic name and specific name which consisted of many words were used. It was eventually found to be incompatible and hence was replaced by binomial system.
Matching: select the correct answer by indicating that a given phrase describes either (S) the sympathetic component, (P) the parasympathetic component, (B) both the sympathetic and parasympathetic components, or (N) neither the sympathetic or parasympathetic components of the autonomic nervous system.
1. Innervates the kidneys
2. Long cholinergic preganglionic fibers
3. Adrenergic receptors
4. Nicotinic receptors
5. Innervates smooth muscles in arterioles
6. Muscarinic receptors
7. Innervates skeletal muscle
8. Decreased atrial contractility
9. Mydriasis
10. Acetylcholine as a neurotransmitter
Answers
Answer:
Explanation:
1. Innervates the kidneys: sympathetic
2. Long cholinergic preganglionic fibers: Both sympathetic and parasympathetic
3. Adrenergic receptors: both sympathetic and parasympathetic
4. Nicotinic receptors: Both sympathetic and parasympathetic
5. Innervates smooth muscles in arterioles: both sympathetic and parasympathetic
6. Muscarinic receptors: Both sympathetic and parasympathetic
7. Innervates skeletal muscle: sympathetic
8. Decreased atrial contractility: parasympathetic
9. Mydriasis: parasympathetic
10. Acetylcholine as a neurotransmitter: Both sympathetic and parasympathetic
the phenomenon is called a revision why did it happen
Answers
Answer:
help in studying
Explanation:
What is immigration?
A. When animals leave an ecosystem
B. When animals are born in an ecosystem
Ο Ο Ο O
C. When animals move into an ecosystem
D. When animals die in an ecosystem
Answers
Answer:
C. When animals move into an ecosystem
Explanation:
Which critter trait is affected by an environmental factor, such as light, temperature, or
diet? Explain.
Answers
Answer:
Tallness.
Explanation:
Tallness is the critter trait that is affected by an environmental factor, such as light, temperature, or diet because the organism remains short if they are not getting food properly as well as temperature. Food provides essential nutrients that contribute in the growth of organism. Suitable temperature of the body allows the different functions in the body to be done which directly affects the growth of the body and the organism becomes taller.
functions of the nerve attached to the muscle fibre
Answers
Answer:
Stimulation. Inside the muscle, the neuron branches to supply an individual fibre at the neuromuscular junction or motor endplate. An electrical signal travels along the neuron and arrives at the neuromuscular junction.
Discuss two characteristics of the female pelvis. Why are these characteristics significant?
Answers
Answer:
The general structure of the female pelvis is thinner and less dense, in comparison to the thick and heavy male pelvis, which is designed to support a heavier body build. The true pelvis is wide and shallow in the female, and the pelvic inlet, also known as the superior pelvic aperture is wide, oval and rounded.
Identify the molecule that is not a compound
Answers
Answer:
dear, your question seems to be incomplete.......plz ask it again
Porque las enzimas actuan sobre algunas sustancias ñ
Answers
Answer:
SPAM
Explanation:
SPAM
SPAM
List three potential effects of errors occurring during meiosis.
Answers
Errors can occur during meiosis producing gametes with an extra or missing chromosome. The consequences of this following fertilisation depend on which chromosomes are affected. Often the embryo is not viable, but some of these errors can lead to trisomy conditions or sex chromosome disorders.
Explanation:
:)
Which of the following is the best definition of a scientific law? O A. A set of rules for ethical conduct during an experiment B. A statement that describes how natural events happen O C. An explanation of natural events that is well supported by scientific evidence O D. An educated guess that explains the answer to a scientific question
Answers
Scientific law is a statement that describes how natural events happen on the earth.
What is scientific law?
A scientific law is defined as a statement that describes an occurrence of event in nature. This term is used in all of the sciences that is related to nature.
So we can conclude that Scientific law is a statement that describes how natural events happen on the earth.
Learn more about law here: https://brainly.com/question/820417
#SPJ1
Calculate the number of neutrons in atoms of the isotope 3919K
With working out
Answers
Answer:
20 neutrons
Explanation:
In the atom of an element, there exists three subatomic particles namely; proton, neutron and electron etc. The sum of the number of neutrons and number of protons (a.k.a atomic number) in an atom makes up the mass number.
In this question, an element was given as follows: 39- 19 K meaning that the mass number is 39 but the atomic number is 19.
Hence,
no of. neutrons = mass no. - atomic no.
39 - 19 = 20 neutrons.
Which of these statements are true about diffusion
A. It is how gas exchange occurs in the blood cells in the circulatory system
B. It is when particles move from an area of low concentration to high concentration
C. It is how white blood cells travel around in the body to find viruses and bacteria
D. It is how sunlight gets absorbed into chloroplast in plants for photosynthesis
Answers
Answer: c
Explanation:
Which of the following is the best definition of the term nonrenewable
resource?
A. A resource that can be replaced naturally within a reasonable time
period
B. An inexpensive resource
C. An expensive resource
D. A resource that takes many years to replace
Which one A or D help me pls
Answers
Answer
D.
Explanation
Non renewable resources such as coal, if not used sustainably will get over fast and coal is used for many purposes, if this resource gets over it will take hundreds of years to come back
Answer:
D). A resource that takes many years to replace.
Explanation:
Trust me
7. Based on their shape, how would you classify these Fungi? (Which Division do they fit?) I would classify them as sac fungi
Answers
Answer:
To match the features and characteristics.
Explanation:
We can classify these Fungi on the basis of their features and characteristics that resembles to the different divisions of fungi. Fungi are classified in four divisions i.e. the Chytridiomycota (chytrids), Zygomycota (bread molds), Ascomycota (yeasts and sac fungi), and the Basidiomycota (club fungi). There are specific characteristics of every division of fungi so we have to match the physical features of unknown fungi with these divisions and classify them.
Why do you think type 2 diabetes occurs so much more often than other inheritable diseases? Propose a hypothesis for why this allele has not been eliminated by natural selection.
Which type of species best describes a mouse: opportunistic or equilibrium? Explain why a mouse or rat population would continuously grow while other mammals (cheetahs) are nearly extinct.
Answers
Answer:
This allele has not been eliminated by natural selection because it may confer an adaptive advantage for particular environmental conditions
Mice and rats are opportunistic species. These species can rapidly adapt to different environmental conditions, while cheetahs are unable to adapt to changing environments.
Explanation:
An allele is a gene variant that may be beneficial, neutral, or deleterious for a particular environment. Different alleles are not eliminated by natural selection against other alleles (even when a priori seem to be deleterious) because they confer a selective advantage in a given environment. For example, the allele for sickle cell anemia is caused by a point mutation which is lethal in homo-zygous individuals, but heterozygous individuals are less likely to die of malaria, thereby this allele has been positively selected in geographic areas where malaria is an endemic disease. Moreover, mice and rats are opportunistic species, i.e., they are species that rapidly adapt to varied living conditions. These species are characterized to have high growth rates and produce many offspring. On the other hand, the cheetah is a highly specialized species that is unable to adapt to changing environments. In consequence, cheetah populations are more prone to become extinct than rat and mice populations.
HIV & AIDS. Is this condition still relevant? What are the latest statistics on this condition and can the new drugs really prevent new
infections?
Answers
Answer:
They're still VERY relevant.
Explanation:
In 2019, an estimated 34,800 new HIV infections occurred in the United States. HOWEVER new HIV infections declined 8% from 37,800 in 2015 to 34,800 in 2019. In 2012, the US Food and Drug Administration gave the green light to using daily pills of an HIV medication called Truvada (emtricitabine/tenofovir) to prevent infection. It proved more than 85% effective when taken on schedule. New drugs are still being developed, here's a link from the
FDA explaining some different types of new TREATMENT medications:
https://www.fda.gov/news-events/press-announcements/fda-approves-new-hiv-treatment-patients-limited-treatment-options
Here's a link for medications that PREVENT HIV/AIDS:
https://www.nature.com/articles/d41586-021-00618-7#:~:text=In%202012%2C%20the%20US%20Food,effective%20when%20taken%20on%20schedule.
The islets of Langerhans are surrounded by
A-exocrine cells that produce digestive fluid.
B-endocrine cells that produce digestive fluid.
C- exocrine cells that produce glycogen
D-B and C
PLEASE HELP ME ITS REALLY URGENT CAUSE I HAVE EXAMS TOMORROW!!!
Answers
Answer:
A-exocrine cells that produce digestive fluid.
Explanation:
The pancreas is composed of both exocrine cells (capable of producing digestive enzymes) and endocrine cells (involved in the production of hormones that control glucose homeostasis). The islets of Langerhans are clusters or 'islands' of pancreatic endocrine cells, which consist of α-cells that produce glucagon, β-cells that secrete insulin and δ-cells that produce somatostatin. These islets are surrounded by: 1-exocrine cells called 'acini' that produce digestive enzymes such as chymotrypsin, trypsinogen, lipase, and elastase; and 2-bile ductules, which are tubes that carry bile from the liver and the gallbladder through the pancreas.
Provide three ways in which you can tell the difference between a cell in mitosis vs a cell in meiosis. Describe how they are different.
Answers
Answer:
Mitosis consists of one stage whereas meiosis consists of two stages. Mitosis produces diploid cells (46 chromosomes) whereas meiosis produces haploid cells (23 chromosomes). Mitosis produces two identical daughter cells whereas meiosis produces four genetically different daughter cells
What is the most common energy source for cells?
Answers
Answer:
The most common energy source for cells is ATP, or Adenosine Triphosphate
Answer:
Mitochondria stores energy in the form of ATP (Adenosine Tri Phosphate).
Since, mitochondria provide energy to the cells it is also known as the powerhouse of the cell.
A phospholipid . Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a has both polar and nonpolar regions b is made up of a triglyceride bonded to a phosphate group c is a building block of ATP d can donate both cations and anions in solution
Answers
Answer:
A phospholipid
a. has both polar and nonpolar regions.
Explanation:
Phospholipids, as amphipathic molecules, consist of a glycerol molecule, two fatty acids, and a phosphate group that is modified by an alcohol. The phosphate group is the negatively-charged hydrophilic (water-loving) polar head, which face outward and are attracted to the intracellular and extracellular fluid. The fatty acids are the uncharged, hydrophobic (water-fearing) nonpolar tails, which face the inside, away from the water and meet in the inner region of the membrane.
a) explain covalent bond and hydrogen bond with an example of each (4marks)
b)state three(s) importance of surface tension and example( 6marks)
Answers
Answer:
Covalent bond is a primary chemical bond formed by the sharing of electron pairs. Covalent bonds are strong bonds with greater bond energy. Hydrogen bond is a weak electrostatic attraction between the hydrogen and an electronegative atom
