Biology Questions

Q:

An irregular mode of reproduction resulting in the development of an embryo without fertilization is called

1.Parthenogenesis 2.Apogamy 3.Sporophytic budding

Select the correct answer using the code given below.

A) 1 only B) 2 only
C) 2 and 3 only D) 1, 2 and 3
 
Answer & Explanation Answer: D) 1, 2 and 3

Explanation:

In animals, parthenogenesis means development of an embryo from an unfertilized egg cell. In plants parthenogenesis is a component process of apomixis.Apogamy is a type of reproduction, occurring in some ferns, in which the sporophytedevelops from the gametophyte without fusion of gametes.Adventitious embryony also called sporophytic budding, is a type of apomixis in which an embryo develops directly from nucellus or integument tissue.So, all three are correct.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: Bank Exams

2 2761
Q:

A protein is being assembled when

A) RNA is being translated B) DNA is being translated
C) RNA is being transcribed D) DNA is being transcribed
 
Answer & Explanation Answer: A) RNA is being translated

Explanation:

A protein is being assembled when RNA is being translated. This process goes as, by the process of transcription first DNA is is converted to mRNA. And then by the process of translation this mRNA is converted to proteins.

=> DNA ----> mRNA ----> Proteins.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

4 2745
Q:

Which of the following is true of enzymes?

A) Enzymes lowers the activation energy for the chemical reaction B) Enzymes speed up the rate of a chemical reaction
C) Both A & B D) Neither A nor B
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Enzymes are macromolecular biological catalysts. Enzymes accelerate chemical reactions. The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

5 2743
Q:

Which among the following hormone can be used as a drug to treat cardiac arrest and some other cardiac problems?

A) Epinephrine B) Insulin
C) Thyroxin D) Calcitonin
 
Answer & Explanation Answer: A) Epinephrine

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk

4 2741
Q:

Most Type 2 diabetics do not produce insulin.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

In Type 1 diabetes, body do not produce any insulin. In type 2 diabetes, body can produce some insulin.


 


Hence, the given statement that most type 2 diabetics do not produce insulin is "FALSE."

Report Error

View Answer Workspace Report Error Discuss

Subject: Biology
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

1 2736
Q:

The HIV retrovirus is particularly deadly because

A) I can become AIDS shortly afte being contracted B) It attacks the body immune system
C) Treatments can be dangerous for patients D) Its hard to diagnose accurately
 
Answer & Explanation Answer: B) It attacks the body immune system

Explanation:

HIV is a virus that damages the immune system. HIV is a lifelong condition, and without treatment, a person with HIV can develop AIDS.

The_HIV_retrovirus_is_particularly_deadly_because1563452540.jpg image

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

9 2736
Q:

Do plant cells have Mitochondria?

A) No B) Yes
C) May be D) Can't be determined
 
Answer & Explanation Answer: B) Yes

Explanation:

While plant cells have chloroplasts to photosynthesize, they also require ATP for cellular functions, and do use oxygen to break down some of the sugar they produce in order to generate that ATP. Cellular respiration takes place in the mitochondria. They need mitochondria for this reason.
Hence with this logic, we can say that Plants cells have mitochondria.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

2 2734
Q:

Cellulose is a major component of the

A) Pythium B) Pseudomonas
C) Xanthomonas D) Saccharomyces
 
Answer & Explanation Answer: A) Pythium

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk

1 2733