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- Question
Which observation proves that a cell is a eukaryote?
Options- A. It contains DNA
- B. It contains ribosomes
- C. It has a cell membrane
- D. It has DNA inside a nucleus
- Correct Answer
- It has DNA inside a nucleus
ExplanationEukaryotic cells all have a nucleus. Eukaryotes are organisms that are multicellular, although there are some examples of single cellular eukaryotes. So eukaryotic cells can be either cell with a nucleus or a eukaryotic organism's cell.
The most important feature to judge whether it has nucleus membrane.
And for other choices, they are the common features of eukaryote and prokaryote.
- 1. The normal blood pressure in human beings is
Options- A. 80/120
- B. 120/80
- C. 80/110
- D. 110/90 Discuss
- 2. Sort each description by the type of RNA it describes? a) contains an anticodon b) specifies the amino acid squence for a protein c) contains exons d) has amino acids covalently attached e) is a component of ribosomes f) is the most abundant form of RNA
Options- A. a, b, d - tRNA, c - mRNA, e, f - rRNA
- B. a, c - tRNA, b, d - mRNA, e, f - rRNA
- C. a, e, f - rRNA, b - mRNA, c, d - tRNA
- D. None of the above Discuss
- 3. Which of the following is an abnormal constituent of urine?
Options- A. Creatinine
- B. Uric acid
- C. Glucose
- D. Urea Discuss
- 4. Select the correct statement about the Heart Valves.
Options- A. Aortic and pulmonary valves control the flow of blood into the heart.
- B. The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.
- C. The tricuspid valve divides the left atrium from the left ventricle.
- D. The mitral valve separates the right atrium from the right ventricle. Discuss
- 5. Which of the following statements best describes nutrient density?
Options- A. Consume a variety of foods from MyPyramid's ±ve major food groups every day.
- B. Consume foods that have the most nutrition for their kcalories
- C. Choose a number of diFerent foods within any given food group rather than the same old thing.
- D. All the above Discuss
- 6. Organisms that feed on the excreta of other organisms are called
Options- A. autotrophs
- B. heterotrophs
- C. coprophagous
- D. saprotrophs Discuss
- 7. Organisms which synthesise their own food are called
Options- A. autotrophs
- B. heterotrophs
- C. auxotrophs
- D. saprotrophs Discuss
- 8. The grouping of blood is based on substances called
Options- A. antibodies
- B. antigens
- C. antitoxin
- D. enzymes Discuss
- 9. Organisms that live in the deep sea are mainly
Options- A. Herbivores
- B. Carnivores
- C. Detritivores
- D. None of the above Discuss
- 10. Genes are made of
Options- A. Carbohydrates
- B. Proteins
- C. Fats
- D. Nucleotides Discuss
Biology problems
Search Results
Correct Answer: 120/80
Correct Answer: a, b, d - tRNA, c - mRNA, e, f - rRNA
Explanation:
Option A)
a, b, d - tRNA, c - mRNA, e, f - rRNA
Is the given sorted description that describes the RNA type.
Correct Answer: Glucose
Explanation:
Normally, urine contains water and wastes, such as urea, uric acid, creatinine, and some ions. However, some of these substances may be abnormally elevated, which usually indicates that something is wrong with the body.
The following are some of the abnormal constituents of urine::
Albumin
Bilirubin
Glucose
Ketone bodies
Blood
Microbes
White blood cells
Correct Answer: The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.
Explanation:
The correct statement from the given options is
The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.
Correct Answer: Consume foods that have the most nutrition for their kcalories
Explanation:
Consume foods that have the most nutrition for their kcalories describes the Nutrient Density.
Correct Answer: coprophagous
Explanation:
The word coprodaeum refers to the last part of the elimentary canal.The excreta (undigested, matter) comes out of that part. So, the organisms that take in such materials are called coprophagous.
Correct Answer: autotrophs
Explanation:
Autotroph: This term means organisms that synthesise their own food. Troph means feeding. Auto means self. The green plants which synthesise their own food are called autotrophs. All others which depend upon the plants directly or indirectly are called heterotrophs.
Correct Answer: antigens
Explanation:
The red blood corpuscles or erythrocytes usually carry antigens and there are two types of antigens. The A group persons have antigen A in their red corpuscles and the B group have antigen B in their red corpuscles. The AB group person have both antigen A and antigen B in their erythrocytes. The 'O' group persons have no antigens in their red corpuscles.
Correct Answer: Detritivores
Explanation:
Deep sea animals cannot produce food as there is no light. They have to depend upon the fall out of organic debirs raining down on them from surface layers. Hence they are detritivores.
Correct Answer: Nucleotides
Explanation:
Genes : The DNA is the genetic material. The DNA is made of several nucleotides. A nucleotide means, one nitrogenous base one sugar molecule and a phosphate molecule. These nucleotides occur in sequences and several nucleotides form one Gene ( a functional mgene is called a cistron)
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